Implantable central venous injection port and external needle guide

• US 7,794,451 B1
• Filed: 01/22/2009
• Issued: 09/14/2010
• Est. Priority Date: 03/05/2004
• Status: Expired due to Fees

• Current Assignee: John Maa, Timothy A.M. Chuter
• Original Assignee: John Maa, Timothy A.M. Chuter
• Inventors: Maa, John, Chuter, Timothy A. M.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): VU, QUYNH-NHU HOANG
• Application Number:
  US12/321,522
• Time in Patent Office: 600 Days
• Field of Search: 604/890.1, 604/891.1, 604/175, 604/178, 604/179, 604/93.01, 604/535, 604/536, 604/288.01, 604/288.02, 604/288.04, 604/523, 600/30
• US Class Current: 604/891.1
• CPC Class Codes: A61M 2039/0238 having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members

Abstract

An assembly for subcutaneous injections comprising an implantable injection port comprising a body with a plenum, an elastomeric self-sealing diaphragm sealed to the body or with a plenum, an outlet connecting the plenum to a conduit, and one or more ferromagnetic compatible elements positioned about the elastomeric self-sealing diaphragm and near the top side; and a needle support platform comprising a body having a top side and bottom side, with a needle guide extending from the top side to the bottom side, a needle secure; and an attachment base with a top side and bottom side, a center hollow open to the top and bottom sides, and one or more ferromagnetic compatible elements positioned about the center hollow and near the bottom side of the attachment base, the bottom side of the body of the needle support platform resting on the top side of the attachment base and slidable thereon, the position of the body on the attachment base adapted to be detachably secured.

Claims

1. An assembly for subcutaneous injections comprising:

an implantable injection port having a body with a plenum;

an elastomeric self-sealing diaphragm sealed to the body over the plenum;

an outlet for connecting the plenum to a central venous catheter;

one or more ferromagnetic compatible elements positioned about the elastomeric self-sealing diaphragm and near the top side of the body of said injection port;

an external needle guide and support platform comprising a body having a top side;

bottom side; and

an attachment base;

wherein said attachment base directly connected to said body of said needle guide;

a needle guide extending from the top side to the bottom side;

a needle securer; and

one or more ferromagnetic compatible elements positioned near the bottom side and within a ring-shaped lip of the attachment base, the ferromagnetic compatible elements of the implantable injection port having opposite polarities to the ferromagnetic compatible elements of the needle support platform.

2. The assembly according to claim 1 wherein the needle support has two or more pins on its body, and the needle securer comprises a line adapted to engage the pins to secure the needle in the needle support.

3. The assembly according to claim 1 wherein the ferromagnetic compatible element of the implantable injection port is a ring of a first diameter.

4. The assembly according to claim 1 wherein the ferromagnetic compatible element of the implantable injection port is a permanent magnet ring of a first diameter.

5. The assembly according to claim 1 wherein the ferromagnetic compatible element of the needle support platform is a ring with a diameter at least equal to the first diameter.

6. The assembly according to claim 5 wherein the diameter of the ferromagnetic compatible element ring of the needle support platform has a diameter greater than the first diameter.

7. The assembly according to claim 1 wherein the ferromagnetic compatible element of the needle support is a permanent magnet ring having a diameter at 15 least equal to the first diameter.

8. The assembly according to claim 7 wherein the diameter of the permanent magnet ring of the needle support platform and the diameter greater than the first diameter.

9. The assembly according to claim 1 wherein the body of the implantable injection port has a ring lip extending outward from the front side and one or more ferromagnetic compatible elements positioned at least partially in the ring lip.

10. The assembly according to claim 1 wherein the body of the needle support platform has a ring lip extending downward from the bottom side and the one or more ferromagnetic compatible elements are positioned at least partially in the ring lip.

11. The assembly according to claim 9 wherein the body of the needle support platform has a ring lip extending downward from the bottom side and the one or more ferromagnetic compatible elements are positioned at least partially in the ring lip.

12. The assembly according to claim 11 wherein the outer diameter of the ring lip of the implantable injection port is less than the inner diameter of the ring lip of the needle support platform.

13. An assembly for subcutaneous injections comprising:

an implantable injection port comprising;

a body with a plenum, an elastomeric self-sealing diaphragm sealed to the body or with a plenum, an outlet connecting the plenum to a conduit, and one or more ferromagnetic compatible elements positioned about the elastomeric self-sealing diaphragm and near the top side; and

an external needle guide and support platform comprising;

a body having a top side and bottom side, with a needle guide extending from the top side to the bottom side, a needle secure; and

an attachment base with a top side and bottom side, a center hollow open to the top and bottom sides, and one or more ferromagnetic compatible elements positioned within a ring-shaped lip of the attachment base and near center hollow, the bottom side of the body of the external needle guide and support platform resting on the top side of the attachment base and slidable thereon, the position of the body on the attachment base adapted to be detachably secured.