Tissue compression device with pressure indicator

• US 9,439,827 B2
• Filed: 04/25/2014
• Issued: 09/13/2016
• Est. Priority Date: 10/25/2013
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Saatchi, Sanaz, Berglund, Joseph, Flannery, Conor, Hoff, Mark, Mason, Brian Joseph, Miyashita, Yusuke, Pieron, Remy O'Leary, Williams, Justin
• Primary Examiner(s): Miles, Jonathan
• Assistant Examiner(s): Rwego, Kankindi
• Application Number:
  US14/261,758
• Publication Number:
  US 20150119926A1
• Time in Patent Office: 872 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/12 for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord specially adapted for vas deferens or fallopian tubes A61F6/20; materials for ligaturing blood vessels A61L17/00
• CPC Class Codes: A61B 17/132 Tourniquets sphygmomanometer A61B5/022
• CPC Class Codes: A61B 17/1325 with means for applying local pressure pressure pads A61F5/30
• CPC Class Codes: A61B 17/135 inflatable for measuring blood pressure A61B5/022; inflatable pressure pads A61F5/34
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/12004 for haemostasis, for prevention of bleeding
• CPC Class Codes: A61F 5/32 Adjustable pressure pads
• CPC Class Codes: A61H 1/006 Apparatus for applying pressure or blows for compressive stressing of a part of the skeletal structure, e.g. for preventing or alleviating osteoporosis
• CPC Class Codes: A61H 9/0092 Cuffs therefor

Abstract

Tissue compression devices having pressure indicators and methods of using the same. The tissue compression devices provide feedback to a user with respect to the pressure being applied to selected tissue at a selected location such as a radial artery to assist the user in applying the desired amount of pressure to the tissue (such as the pressure needed to achieve hemostasis at an access site). The pressure indication may be provided by a ring indicator that moves between two configurations (e.g., a concave configuration and a convex configuration), a bellow chamber in a housing, a bladder located below a bladder window, etc.

Claims

1. A tissue compression device comprising:

a base and retention structure attached to the base, wherein the retention structure is configured to retain the base over selected tissue at a selected location, and wherein the base comprises a bottom surface, a top surface, and a bladder orifice formed through the base from the bottom surface to the top surface;

a bladder operably attached to the base, wherein a lower surface of the bladder faces the selected tissue when the retention structure retains the base over the selected location, and wherein an upper surface of the bladder faces away from the lower surface of the bladder; and

a bladder window attached to the base, wherein the bladder window is located above the bladder orifice and the upper surface of the bladder, wherein the upper surface of the bladder and the bladder window are configured such that a portion of the upper surface of the bladder directly contacts the bladder window when pressure in the bladder reaches a selected pressure, wherein a larger portion of the upper surface of the bladder contacts the bladder window when pressure in the bladder is increased, and wherein a smaller portion of the upper surface of the bladder contacts the bladder window when pressure in the bladder is decreased.

2. A device according to claim 1, the device further comprising visible indicia indicative of the size of the portion of the upper surface of the bladder contacting the bladder window.

3. A device according to claim 1, wherein the bladder window is located in a dial orifice of 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, the upper surface of the bladder, and the lower surface of the bladder.

4. A device according to claim 3, the device further comprising:

a plurality of dial posts extending from the top surface of the base, wherein the plurality of dial posts are arranged around a perimeter of the bladder orifice, wherein each post of the plurality of dial posts comprises an inner surface facing the bladder orifice and an outer surface facing away from the bladder orifice;

wherein the dial is mounted on the plurality of dial posts, the dial comprising a dial channel that comprises an opening facing the top surface of the base, an inner wall facing the inner surfaces of the plurality of dial posts, and an outer wall facing the outer surfaces of the plurality of dial posts;

mating features on the inner surface of the plurality of dial posts and the inner wall of the dial channel that are configured to move the dial towards the top surface of the base when the dial is rotated in a first direction about the compression axis and are also configured to move the dial away from the top surface of the base when rotated in a second direction about the compression axis.

5. A device according to claim 4, wherein the mating features comprise raised ribs on the inner surfaces of the plurality of dial posts and recesses formed into the inner wall of the dial channel, wherein the raised ribs are located within the recesses.

6. A device according to claim 1, wherein an upper surface of the bladder window comprises a surface configured to reduce specular reflection from the upper surface.

7. A device according to claim 6, wherein the upper surface of the bladder window comprises a matte finish.

8. A device according to claim 6, wherein the upper surface of the bladder window comprises an anti-reflective coating.

9. A device according to claim 6, wherein the upper surface of the bladder window comprises a curvature configured to reduce specular reflection experienced by a view viewing the upper surface of the bladder window.