Implantable medical device for improved placement and adherence in the body

Patent metadata

Field	Value
Publication number	US-11229780-B2
Application number	US-201815864507-A
Country	US
Kind code	B2
Filing date	Jan 8, 2018
Priority date	Oct 21, 2002
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A medical device comprises a flexible member that can be adhesively attached to a housing of the medical device, allowing implantation of the medical device into a body through an incision of reduced size. The flexible member can be attached to the housing either before or after implantation into the body. The flexible member comprises suture locations, including a permeable membrane or a suture hole, for suturing the medical device to tissue of the body. The suture holes can be filled with a substance penetrable by a suture needle, to minimize tissue ingrowth before or after suturing.

First claim

What is claimed is:

1. A device comprising:
a housing comprising a needle entry site and a housing bottom surface;
a needle-penetrable member comprising a first region of thickness and a second region of thickness; wherein the first region of thickness and the second region of thickness are different thicknesses; and wherein at least a portion of the needle-penetrable member is configured to be sutured to a subcutaneous tissue;
wherein both the first region of thickness and the second region of thickness of the needle-penetrable member extend below the housing bottom surface; wherein the housing bottom surface directly contacts the needle-penetrable member; and wherein the needle-penetrable member does not extend over the needle entry site.

2. The device of claim 1 , wherein the needle-penetrable member is a flexible polymer; and wherein the needle entry site is configured for a needle to administer,
withdraw, or exchange a fluid through the needle entry site.

3. The device of claim 2 , wherein the flexible polymer is silicone, the needle-penetrable member is attached to the housing bottom surface, and the needle-penetrable member is devoid of any preformed suture holes.

4. The device of claim 2 , wherein the housing further comprises an outlet, and the needle entry site comprises a septum.

5. The device of claim 4 , wherein the septum is comprised of silicone and is configured to fluidly seal the needle entry site.

6. The device of claim 1 , wherein the first region of thickness is a greater thickness than the second region of thickness, and both the first region of thickness and the second region of thickness of the needle-penetrable member extend away from the housing bottom surface.

7. The device of claim 1 , wherein the device is configured to allow for the administration, withdrawal, or exchange of a fluid.

8. A device comprising:
a housing comprising a bottom surface, and an entry site;
a needle-penetrable member comprising a region of variable thickness extending along the bottom surface of the housing, wherein the needle-penetrable member does not contact the entry site and wherein at least a portion of the needle-penetrable member is configured to be sutured to a subcutaneous tissue.

9. The device of claim 8 , wherein the bottom surface is opposite the entry site.

10. The device of claim 8 , wherein the needle-penetrable member is comprised of silicone and is devoid of any preformed suture holes.

11. The device of claim 8 , further comprising a septum, wherein the needle-penetrable member does not contact the septum, and the septum is further comprised of a flexible polymer.

12. The device of claim 8 , wherein the device is configured to allow for the administration, withdrawal, or exchange of a fluid.

13. A device comprising:
a housing comprising a needle entry site, and a surface opposite the needle entry site; and
a needle-penetrable member configured to be sutured to a subcutaneous tissue; and
wherein the needle-penetrable member varies in thickness along the surface opposite the needle entry site, and the needle-penetrable member traverses the surface opposite the needle entry site.

14. The device of claim 13 , wherein the needle entry site is configured to allow for the administration, withdrawal, or exchange of a fluid.

15. An implantable access device, comprising:
a first housing surface defining an entry site configured to be accessed by a needle, and a bottom housing surface;
a needle-penetrable member defining a needle-penetrable surface configured to be sutured to a subcutaneous tissue and comprising a first region of thickness and a second region of thickness, wherein the thickness of the first region is different than the thickness of the second region; wherein the needle-penetrable member does not extend over the entry site, and both the first region of thickness and the second region of thickness contact and span the bottom housing surface; and
wherein the implantable access device is arranged to be subcutaneously positioned in a body of a patient such that the first housing surface is disposed adjacent to a cutaneous layer of the body and the needle-penetrable surface is disposed adjacent to the subcutaneous tissue in the body.

16. The implantable access device of claim 15 , wherein the subcutaneous layer comprises muscle tissue.

17. The implantable access device of claim 15 , wherein the implantable access device further comprises a housing comprising the first housing surface and the bottom housing surface, a septum and a reservoir.

18. The implantable access device of claim 15 , wherein the needle-penetrable member comprises silicone.

19. The implantable access device of claim 15 , wherein the implantable access device is arranged be placed in a subcutaneous tissue pocket in the body of the patient.

20. The implantable access device of claim 15 , wherein the needle-penetrable member is adapted for increased patient comfort.

21. The implantable access device of claim 15 , wherein the entry site is configured to allow for the administration, withdrawal, or exchange of a fluid using the needle.

Assignees

• Angiodynamics Inc

Inventors

• Bourne George
• Culhane James

Classifications

• A61M2039/0232

  having means for facilitating the insertion into the body · CPC title

• A61M39/04

  having pierceable self-sealing members · CPC title

• A61M39/0208 Primary

  Subcutaneous access sites for injecting or removing fluids (transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276) · CPC title

• A61M2039/0211

  with multiple chambers in a single site · CPC title

• A61M2039/0223

  having means for anchoring the subcutaneous access site · CPC title