Tissue compression device with multi-chamber bladder

Patent metadata

Field	Value
Publication number	US-9955978-B2
Application number	US-201414261771-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Oct 25, 2013
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Tissue compression devices including a multi-chamber bladder that is retained within the tissue compression device, with the multi-chamber bladder being positioned in a bladder orifice in a base of a compression device body. The multi-chamber bladder includes at least one upper chamber located above the base and at least one lower chamber located below the base. The lower chamber is located between the base and a selected location on a patient when the compression device is positioned over selected tissue such as, e.g., a radial artery, as described herein.

First claim

What is claimed is:

1. A tissue compression device comprising:
a compression device body comprising:
a base comprising a bottom surface configured to face selected tissue and a top surface configured to face away from the selected tissue when the compression device body is positioned over the selected tissue;
a bladder orifice formed through the compression device body from the bottom surface to the top surface;
a bladder positioned in the bladder orifice, the bladder comprising a plurality of chambers,
wherein an upper chamber of the plurality of chambers is positioned adjacent a lower chamber of the plurality of chambers, wherein the upper chamber comprises a top layer and a bottom layer connected to each other about an outer perimeter of the upper chamber, and wherein the lower chamber comprises a top layer and a bottom layer connected to each other about an outer perimeter of the lower chamber,
wherein the bottom layer of the upper chamber faces the top layer of the lower chamber, wherein the bottom layer of the upper chamber is connected to the top layer of the lower chamber about an opening formed between the upper chamber and the lower chamber, wherein fluid in the upper chamber can pass into or out of the lower chamber through the opening,
wherein the upper chamber is located above the top surface of the base and the lower chamber is located below the bottom surface of the base, wherein the bottom layer of the upper chamber faces the top surface of the base and the top layer of the lower chamber faces the bottom surface of the base; and
a dial attached to the base, wherein the dial is configured to rotate about a compression axis extending though the dial orifice, the bladder orifice, an upper surface of the bladder, and a lower surface of the bladder;
a bladder window attached to the dial such that the upper surface of the bladder is located between the bladder window and the bladder orifice, wherein rotation of the dial about the compression axis in a first direction moves the bladder window towards the top surface of the base and rotation of the dial about the compression axis in a second direction moves the bladder window away from the top surface of the base; and
a retention structure attached to the compression device body, the retention structure configured to retain the compression device body in a selected location over the selected tissue.

2. A device according to claim 1 , wherein the bottom layer of the upper chamber is connected to the top layer of the lower chamber along a seal line that is asymmetric about at least one line when projected onto a plane transverse to a compression axis passing through the upper surface of the bladder, the bladder orifice, and the lower surface of the bladder.

3. A device according to claim 2 , wherein the seal line formed between the bottom layer of the upper chamber and the top layer of the lower chamber forms a keyhole shape when projected onto the plane transverse to the compression axis.

4. A device according to claim 2 , wherein the bladder orifice in the compression device body comprises a shape that is asymmetric about at least one line when projected onto the plane transverse to the compression axis.

5. A device according to claim 1 , wherein the bottom layer of the upper chamber is connected to the top layer of the lower chamber along a seal line that forms a bladder connection shape when projected onto a plane transverse to a compression axis passing through the upper surface of the bladder, the bladder orifice, and the lower surface of the bladder, and wherein the bladder orifice in the compression device body comprises a bladder orifice shape that is asymmetric about at least one line when projected onto the plane transverse to the compression axis, and further wherein the bladder connection shape and the bladder orifice shape are configured to prevent rotation of the bladder about the compression axis.

6. A device according to claim 1 , wherein the upper chamber comprises a first upper chamber and wherein the bladder further comprises a second upper chamber located between the first upper chamber and the top surface of the base, wherein fluid within the first upper chamber passes through the second upper chamber when moving into the lower chamber.

7. A device according to claim 1 , wherein the lower chamber comprises a first lower chamber and wherein the bladder further comprises a second lower chamber located between the first lower chamber and the bottom surface of the base, wherein fluid within the first lower chamber passes through the second lower chamber when moving into the upper chamber.

8. A device according to claim 1 , wherein an outer perimeter of the upper chamber is smaller than an outer perimeter of the lower chamber as measured in a plane transverse to a compression axis passing through the upper surface of the bladder, the bladder orifice, and the lower surface of the bladder.

9. A device according to claim 1 , wherein an outer perimeter of the upper chamber has a different shape than a shape of an outer perimeter of the lower chamber when both outer perimeters are projected onto a plane transverse to a compression axis passing through the upper surface of the bladder, the bladder orifice, and the lower surface of the bladder.

10. A device according to claim 1 , wherein an outer perimeter of the upper chamber has a circular shape when projected onto a plane transverse to a compression axis passing through the upper surface of the bladder, the bladder orifice, and the lower surface of the bladder, and wherein an outer perimeter of the lower chamber has a non-circular shape when projected onto the plane transverse to the compression axis.

11. A device according to claim 1 , wherein the bladder window comprises a bottom surface that faces the bladder, and wherein the bladder window comprises a window protrusion extending away from the bottom surface of the window, wherein the window protrusion is located closer to the top surface of the base than a portion of the bottom surface of the bladder window surrounding the window protrusion.

12. A device according to claim 1 , wherein the device further comprises a dial attached to the base and configured to rotate about an compression axis that extends through the upper surface of the bladder, the bladder orifice in the base, and the lower surface of the bladder, wherein rotation of the dial in a first direction about the axis moves the dial towards the top surface of the base and rotation of the dial about the axis in a second direction moves the dial away from the top surface of the base,
and wherein the upper chamber of the bladder is located between the dial and the top surface of the base.

13. A device according to claim 12 , wherein the dial comprises a dial orifice, and wherein the upper surface of the bladder is visible through the dial orifice and the axis about which the dial rotates passes through the dial orifice.

14. A device according to claim 13 , wherein the upper surface of the bladder forms a curved surface that bulges upward away from the top surface of the base when the dial compresses the upper chamber of the bladder and/or wherein the upper surface of the bladder comprises a matte finish.

15. A device according to claim 12 , wherein the device further comprises a ring indicator attached to the dial and positioned above and in contact with the upper surface of the bladder such that the upper chamber of the bladder is located between the ring indicator and the top surface of the base, wherein the ring indicator is in a concave configuration, wherein increasing pressure within the

Assignees

• Medtronic Vascular Inc

Inventors

• Flannery Conor
• Berglund Joseph
• Hoff Mark
• Mason Brian Joseph
• Miyashita Yusuke
• Pieron Remy O'Leary
• Saatchi Sanaz

Classifications

• A61B2017/00243

  cardiac · CPC title

• A61H9/0092

  Cuffs therefor · CPC title

• A61H1/006

  Apparatus for applying pressure or blows for compressive stressing of a part of the skeletal structure, e.g. for preventing or alleviating osteoporosis · CPC title

• A61F5/32

  Adjustable pressure pads · CPC title

• A61B17/135

  inflatable · CPC title