公开(公告)号：US10456570B2

公开(公告)日：2019-10-29

申请号：US15179688

申请日：2016-06-10

Applicant: Proviflo, LLC

Inventor： Charles David Finch, Jr.

IPC: A61M39/02 ,  A61M1/36 ,  A61M5/42 ,  A61M39/22 ,  B29C45/00 ,  A61M1/28 ,  A61M39/00 ,  B29L31/00

Abstract: The present invention relates to subcutaneously implanted graft-port systems, devices and methods for establishing access to the vascular system of a patient requiring multiple blood treatments over an extended period of time. The systems, devices and methods disclosed herein reduce miscannulation, promote intra-session hemostasis, and decrease the incidence of bacteremia and sepsis among other improvements and advantages. The devices include a port with a flattened plateau-like surface for receiving an access tube. The flat surface may include a tactile or visual guide to assist with placement of the access tube into the tapered seat. Optional valve mechanisms reduce the size and form factor of the implantable graft-port device and seals the conduit of the port closed to physiologic pressures until the valve is opened upon percutaneous insertion of the access tube. The access tube does not pass into the conduit. A mismatch fit between the access tube and tapered seat causes a decrease in the cross-sectional sealing area, a reduction in the overall device size, and an increase in blood flow during treatment. Lock solutions to prevent fowling and infection are also disclosed.

公开(公告)号：US11690991B2

公开(公告)日：2023-07-04

申请号：US16586067

申请日：2019-09-27

Applicant: Proviflo, LLC

Inventor： Charles David Finch, Jr.

IPC: A61M39/02 ,  A61M1/28 ,  A61M1/36 ,  A61M5/42 ,  A61M39/22 ,  B29C45/00 ,  A61M39/00 ,  B29L31/00

CPC classification number: A61M39/0247 ,  A61M1/285 ,  A61M1/3653 ,  A61M5/427 ,  A61M39/22 ,  B29C45/0081 ,  A61M2039/0018 ,  A61M2039/027 ,  A61M2039/0258 ,  A61M2039/0273 ,  A61M2039/0285 ,  A61M2039/0291 ,  A61M2205/583 ,  A61M2207/00 ,  B29K2995/006 ,  B29L2031/753

Abstract: The disclosure relates to a subcutaneously implanted port device for establishing access to the vascular system of a patient requiring multiple blood treatments over an extended period of time. The systems, devices and methods disclosed herein may reduce miscannulation, promote intra-session hemostasis, and decrease the incidence of bacteremia and sepsis among other improvements and advantages. The devices include a port with a tapered seat for receiving an access tube, the first tapered seat having a proximal portion, a distal portion, and a conical section extending between the proximal portion and the distal portion; and an interface surface configured to engage a blood vessel or a vascular access catheter. The proximal portion of the tapered seat is configured to receive the access tube therethrough, and the tapered seat creates a mismatch fit with a diameter of the access tube when in use for an increase in flow during treatment.

公开(公告)号：US20240382734A1

公开(公告)日：2024-11-21

申请号：US18666638

申请日：2024-05-16

Applicant: Proviflo, LLC

Inventor： Charles David Finch, Jr.

IPC: A61M39/02 ,  A61M39/12 ,  A61M39/26

Abstract: Implantable graft-port systems, devices, and methods for establishing access to a fluid-filled internal body space of a patient including the patient's vascular system for blood treatments are described herein. A port device includes a substantially flat surface. The surface is oriented proximal to and substantially parallel with the patient's skin when the device is subcutaneously implanted. The port device includes a tapered seat disposed in a center of the surface and configured to receive a tip of an access tube. The tapered seat is configured to receive the tip of the access tube therethrough. A lid is configured to couple to the substantially flat surface of the port device and includes a guide configured to engage the tip of the access tube and to facilitate percutaneous introduction of the access tube toward the tapered seat irrespective of an introduction angle. The guide includes a continuous sequence of fluted features.