Coupling system for a closed fluid transfer system

Patent metadata

Field	Value
Publication number	US-11951273-B2
Application number	US-202117908012-A
Country	US
Kind code	B2
Filing date	Mar 3, 2021
Priority date	Mar 6, 2020
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

A coupling system for a closed fluid transfer system includes a coupling member that features a coupling member housing. The coupling member housing includes a housing portion that at least partially surrounds a sealing member receptacle in an axial direction with respect to the longitudinal axis and which includes a coupling member housing threaded portion on the inner surface facing the sealing member. The coupling system also includes a mating coupling member for coupling with the coupling member. The mating coupling member includes a mating coupling member housing that has a mating coupling member guiding structure. The coupling member housing threaded portion of the coupling member is configured such that the mating coupling member guiding structure and the sealing member receptacle structure are jointly and movably guided, in particular in a predetermined positional relation to each other, by the coupling member housing threaded portion.

First claim

The invention claimed is:

1. A coupling system for a closed fluid transfer system, the coupling system comprising:
A) a coupling member comprising:
a coupling member housing comprising a fluid connection and a coupling side, wherein the coupling member housing provides a longitudinal axis extending from the fluid connection toward the coupling side;
a spike with at least one fluid opening, which is held in a spike receptacle of the housing arranged at the fluid connection and extends into the coupling member housing in the direction of the longitudinal axis, wherein the at least one fluid opening is arranged in an end portion of the spike facing the coupling side;
a sealing member receptacle arranged in the coupling member housing on the coupling side; and
a sealing member arranged in the sealing member receptacle,
wherein the coupling member housing comprises a housing portion, which at least partially surrounds the sealing member receptacle in an axial direction with respect to the longitudinal axis and comprises a coupling member housing threaded portion on the inner surface facing the sealing member;
wherein the sealing member receptacle with the sealing member is moveable in the direction of the longitudinal axis between a sealing member receptacle position with maximum distance to the fluid connection and a sealing member receptacle position with minimum distance to the fluid connection, and
wherein the coupling member housing threaded portion is configured such that a sealing member receptacle guiding structure of the sealing member receptacle is movable in engagement with the coupling member housing threaded portion between the sealing member receptacle position with maximum distance to the fluid connection and the sealing member receptacle position with minimum distance to the fluid connection, wherein the coupling member housing threaded portion provides a height/length of the thread in the direction of the longitudinal axis between the sealing member receptacle position with maximum distance to the fluid connection and the sealing member receptacle position with minimum distance to the fluid connection, which is more than the height/length of the sealing member receptacle guiding structure in this direction; and

B) a mating coupling member for coupling with the coupling member, the mating coupling member comprising:
a mating coupling member housing comprising a mating coupling member fluid connection and a mating coupling side, wherein the mating coupling member housing comprises a mating coupling member longitudinal axis extending from the mating coupling member fluid connection toward the mating coupling side, and
a mating coupling member sealing member, which is arranged in the mating coupling member housing and forms at least a part of a mating coupling side front surface of the mating coupling element together with the mating coupling member housing,

wherein the mating coupling member housing comprises a mating coupling member guiding structure, which is configured such that the mating coupling member is movably guided in the direction of the longitudinal axis relative to the coupling member by the coupling member housing threaded portion of the coupling member,
wherein the coupling system is configured such that the fluid opening of the coupling member in a state connected to the mating coupling member, in which the sealing member receptacle is located in the position with minimum distance to the fluid connection of the coupling member, is at least partially arranged on a side of the mating coupling member sealing member of the mating coupling member facing toward the mating coupling member fluid connection, and
wherein the coupling member housing threaded portion of the coupling member is configured such that the mating coupling member guiding structure and the sealing member receptacle structure are jointly movable guided by the coupling member housing threaded portion.

2. The coupling system according to claim 1 , wherein the at least one fluid opening is arranged within the sealing member, when the sealing member receptacle with the sealing member is located in the position with maximum distance to the fluid connection.

3. The coupling system according to claim 1 , wherein the sealing member receptacle comprises a sealing member receptacle groove, which extends from a front surface facing the coupling side in the direction of the longitudinal axis toward the fluid connection and is configured such that a mating coupling member guiding structure portion comprising a mating coupling member guiding structure is at least partially receivable in the sealing member receptacle groove.

4. The coupling system according to claim 1 , wherein the coupling member housing threaded portion is formed as female thread, in which the sealing member receptacle guiding structure is receivable.

5. The coupling system according to claim 1 , wherein the coupling member housing threaded portion comprises at least two separate threads.

6. The coupling system according to claim 5 , wherein the at least two separate threads are opposed to each other.

7. The coupling system according to claim 1 , wherein at least one thread of the coupling member housing thread portion extends over an angle of less than 360° with respect to the longitudinal axis.

8. The coupling system according to claim 7 , wherein at least one thread of the coupling member housing thread portion extends over an angle of substantially 180° with respect to the longitudinal axis.

9. The coupling system according to claim 1 , wherein at least one thread of the coupling member housing thread portion comprises an orthogonal portion with respect to the longitudinal axis at its end facing the fluid connection.

10. The coupling system according to claim 1 , wherein at least one thread of the coupling member housing thread portion comprises a recessed portion relative to the longitudinal axis at its end facing the fluid connection, which is recessed in the direction of the coupling side with respect to the thread.

11. The coupling system according to claim 1 , wherein the housing portion is rotatable relative to the longitudinal axis.

12. The coupling system according to claim 1 , wherein the sealing member receptacle is rotatable relative to the longitudinal axis and/or the coupling member housing.

13. The coupling system according to claim 1 , wherein the sealing member receptacle supported in the coupling member housing by an elastic member.

14. The coupling system according to claim 13 , wherein the elastic member is a compression spring member, which acts in the direction of the longitudinal axis and which is arranged between the fluid connection and the sealing member receptacle.

15. The coupling system according to claim 1 , wherein the mating coupling member housing comprises at least one mating coupling member guiding structure portion, which comprises the mating coupling member guiding structure and which is configured such that it is insertable in a sealing member receptacle groove comprised by the sealing member receptacle, which extends from a front surface facing the coupling side in the direction of the longitudinal axis toward the fluid connection and is configured such that a mating coupling member guiding structure portion comprising the mating coupling member guiding structure is at least partially receivable in the sealing member receptacle groove.

16. The coupling system according to claim 1 , wherein the coupling member housing threaded portion of the coupling member is configured such that the mating coupling member guidi

Assignees

• Braun Melsungen Ag

Inventors

• Kopp Florin
• Berg Karl Martin
• Krug-Sauer Konstantin
• Bolz Johannes

Classifications

• A61M39/10 Primary

  Tube connectors; Tube couplings {(A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014)} · CPC title

• F16L37/46

  with a gate valve or sliding valve · CPC title

• F16L2201/44

  sterile · CPC title

• A61M2039/0063

  Means for alignment of the septum, e.g. septum rim with alignment holes · CPC title