Attachment device for medical fluids bag

• US 4,432,765 A
• Filed: 07/14/1982
• Issued: 02/21/1984
• Est. Priority Date: 07/14/1982
• Status: Expired due to Fees

• Current Assignee: Rolf A. Oscarsson
• Original Assignee: Rolf A. Oscarsson
• Inventors: Oscarsson, Rolf A.
• Primary Examiner(s): Truluck, Dalton
• Assistant Examiner(s): Lester, Michelle N.
• Application Number:
  US06/398,287
• Time in Patent Office: 587 Days
• Field of Search: 604/201, 604/204, 604/244, 604/251-254, 604/411-415, 604/905, 604/272, 604/174, 285/3, 285/4, 285/307, 285/309-312, 222/81, 222/83, 222/83.5, 137/318, 141/19, 141/329, 141/330
• US Class Current: 604/411
• CPC Class Codes: A61J 1/10 Bag-type containers
• CPC Class Codes: A61J 1/1475 Inlet or outlet ports
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 39/14 for connecting tubes having sealed ends needle sets A61M5/162; having valves closing automatically on disconnection of line A61M39/26
• CPC Class Codes: A61M 5/162 Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14

Abstract

An attachment device for inserting and removing the spike for obtaining fluids from a medical fluid bag such as an IV bag or a bag for peritoneal dialysis comprises a base holding the spike positioned to be inserted into the neck of the bag, and opposed toggles pivoting on the base which engage the neck of the bag during insertion and push the neck onto the spike. During removal of the spike the toggles operate an engagement which contacts the end of the neck and pushes the spike out of the neck of the bag. The device has a hand operable slide which affects the motions of the toggles and the toggles have dependent legs ending in the engagement. The attachment device is designed to protect the end of the spike and to prevent contamination.

Claims

1. In combination, a fluid container and a device adapted to insert and remove an access spike from a wall of said container;

said container having an elongated neck said wall being disposed at the end of said neck, said device having an open position and a closed position, said device comprising;

a. a base member;

b. two pivot members on said base member;

c. pinch arm elements mounted on each of said pivot members, and adapted to rotate thereabout, each of said pinch arm elements having an inner end and an outer end, the inner ends of the pinch arm elements when aligned with a line drawn between said pivot members being spaced apart a distance less than the diameter of said neck but lying apart a distance greater than said diameter when the device is in its open position;

d. push arm elements pivotally connected at one end thereof to the outer end of each of said pinch arm elements, said push arm elements being of substantially equal length and movable back and forth on a line generally parallel to the longitudinal axis of said neck;

e. a hand operable slide member bridging the other ends of said push arm elements;

f. pull arm elements pivotedly connected at one end thereof to the inner end of each of said pinch arm elements, each of said pull arm elements being of substantially equal length and moveable in the same direction as said push arm elements and generally parallel thereto;

3. The combination of claim 1 wherein said pull arm elements and said base member form a guide channel for said neck.

5. The combination of claim 1 wherein when said spike member is inserted into said wall and said pinch arm elements are moved from the closed to the open position, said connector member is positioned to engage the end of said neck causing said pivot members and base member to move away from said neck and extract said spike member.

2. g. a connector member pivotedly connected to the other ends of said pull arm elements and spacing them apart a distance greater than the diameter of said neck;

h. a hollow spike member affixed to said base member and generally aligned with said longitudinal axis, one end of said spike member facing and adapted to penetrate said wall, said spike member being disposed within said connector but being free to move relative thereto; and

i. a fluid conduit member affixed to the other end of said spike member;

whereby, when said device is in its open position and said one end of said spike member is adjacent said wall, motion of said slide towards said fluid container causes said pinch arms elements to rotate through a position where the inner ends thereof are in their closest position and into the closed position of the device with the inner ends of said pinch elements engaging said neck during their rotation thereby pulling said base member towards and said spike member into said wall.

4. The combination of claim 2 wherein said base member is planar and said slide includes a cover attached thereto on the side opposite said base member and covering said spike member when said device is in said closed position.

6. An attachment device mating with the neck of a liquid container, said neck being elongated and having a predetermined diameter, said neck terminating in a penetrable end wall, said attachment device having an open operating position and a closed operative position, said device comprising:

a. a base member having two pivot members mounted thereon;

b. a nipper member having two spaced arm elements, each said arm element being disposed for pivotal motion about one of said pivot members, each said arm element having an inner end and an outer end, said inner ends having a most open position and a closest position, said inner ends being spaced apart a distance greater than said diameter when in said most open position and being spaced apart a distance less than said diameter when in said closest position so as to engage and squeeze said neck;

c. an engagement tube mounted to said base member substantially on the center line between said arm elements and having a pointed end facing said arm elements, said tube being positioned so as to penetrate said end wall when said attachment device is in said closed operating position;

d. hand operable means for moving said nipper member, the movement thereof causing said arm elements to pivot from said most open position through said closest position thereby causing said arm elements to draw said neck inserted therebetween towards said pointed end of said engagement tube and effecting penetration of said end wall, said movement thereby effecting the movement of said device from said open operating position to said closed operating position; and

e. leg elements pivotally attached to the inner end of each of said arm elements and dependent therefrom extending inwardly towards and beyond said pointed end, and a connector member connecting the inward ends of said leg elements, said connector member permitting the movement of said engagement tube therethrough and contacting the end of said neck when said hand operable means moves said nipper member from said closest position towards said most open position and effecting thereby motion of said base member away from said neck and said tube away from said end wall.

8. The connector of claim 6, having a pair of said toggle members opposed one to another and with each toggle member having a said leg member dependent therefrom and connected to said engagement means said toggle members and said leg members serving as said guide means, and wherein said base member is planar and said hand operated means is a slide member operating over and against said base member.

9. The connector of claim 6 wherein said part of said guide means is another toggle member.

7. A connector for a fluid container having a neck of predetermined diameter ending in a penetrable end wall, comprising:

a. a base member;

b. a hollow spike member positioned on said base member and adapted to penetrate the end of said neck as said neck is moved toward said hollow spike member;

c. at least one toggle member adjacent the path of travel of said neck and pivotable inwardly on said base member so that the end of said toggle member moves from an open position away from said spike member to a closed position near said spike member, the end of said toggle member pinching said neck at an intermediate point of arcuate travel and said end of said toggle member pushing said neck at said intermediate point of travel and forcing said neck toward said hollow spike member as said toggle member moves to the closed position thereof;

d. guide means on said base member for directing said neck along its longitudinal axis over said base member, part of said guide means being spaced apart a distance less than said diameter at said intermediate point of acruate travel and including means to retain said neck against lateral motion;

e. a leg member articulately attached at one end thereof to said end of said toggle member, dependent therefrom and extending towards said hollow spike member and an engagement means at the end of said leg member adapted to engage the end of said neck when said neck is seated in the connector and said toggle member is moved from said closed position to the open position thereof; and

f. a hand operated means for effecting motion of said toggle member from said closed position to said open position.