Hemostatic device

• US 8,524,974 B2
• Filed: 12/21/2012
• Issued: 09/03/2013
• Est. Priority Date: 07/15/2002
• Status: Expired due to Term

• Current Assignee: Terumo Kabushiki Kaisha (Terumo Corporation)
• Original Assignee: Terumo Kabushiki Kaisha (Terumo Corporation)
• Inventors: Wada, Satoshi, Numata, Shigeki, Yagi, Hiroshi
• Primary Examiner(s): Bianco, Patricia
• Assistant Examiner(s): JACKSON, BRANDON LEE
• Application Number:
  US13/725,269
• Publication Number:
  US 20130178894A1
• Time in Patent Office: 256 Days
• Field of Search: 128/96.1, 128/98.1, 128/100.1, 128/118.1, 602/13, 602/53, 602 75- 76, 602/5, 606201-203
• US Class Current: 602/53
• 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 2017/00907 for light
• CPC Class Codes: A61B 2017/12004 for haemostasis, for prevention of bleeding
• CPC Class Codes: A61B 2090/3937 Visible markers

Abstract

A hemostatic device includes a flexible band adapted to be wrapped around a patient'"'"'s limb at a site on the limb where bleeding is to be stopped, a portion for securing the band in a wrapped state to the limb, a curved plate which is made of a material more rigid than the band and at least a portion of which is curved toward the inner peripheral side thereof, a main balloon which is provided on the inner peripheral side of the curved plate and which inflates when a fluid is introduced therein, and a pressing member which is provided between the curved plate and the main balloon so that at least a portion thereof overlaps with the balloon and which is adapted for pressing against the balloon. The device provides an excellent hemostatic effect and prevents numbness and poor circulation in areas peripheral to the site of attachment.

Claims

1. A hemostatic device comprising:

a flexible band adapted to be wrapped around a limb of a patient at a site on the limb where bleeding is to be stopped;

means for securing the band in a wrapped state to the patient'"'"'s limb;

a curved plate having an inner peripheral surface, the plate being made of a material more rigid than the band, and the plate having a curved end portion adjacent one end of the curved plate;

a balloon on the inner peripheral surface of the curved plate and configured to be inflated when a fluid is introduced into the balloon;

Wherein the band has a portion including a double layer construction defining a curved plate holder, and the curved plate is positioned in a gap in the double layer construction such that the curved plate is held in the curved plate holder of the band;

wherein the balloon includes a first terminal end, the first terminal end being connected to the band, and the first terminal end being adjacent to the one end of the plate; and

wherein, when the band is wrapped around the limb and inflated, the inflated balloon applies a compressive force to the site in an oblique direction with respect to the surface of the limb.

2. The hemostatic device of claim 1, further comprising a pressing member configured to press against the balloon, the pressing member being positioned between the curved plate and the balloon so that at least a portion of the pressing member overlaps the balloon.

3. The hemostatic device of claim 2, further comprising a marker for positioning the balloon at the site where bleeding is to be stopped.

4. The hemostatic device of claim 3, wherein the marker is on the pressing member.

5. The hemostatic device of claim 2, wherein the pressing member is smaller than the balloon.

6. The hemostatic device of claim 2, wherein the pressing member is positioned near one end of the curved plate in the lengthwise direction of the band.

7. The hemostatic device of claim 2, wherein the pressing member is connected only on one side of the pressing member to the band.

8. The hemostatic device of claim 1, wherein the balloon is a primary balloon and the pressing member comprises a secondary balloon which, when filled with a fluid, presses against the primary balloon under the influence of pressure by the fluid.

9. The hemostatic device of claim 8, wherein the secondary balloon inflates with the introduction of a fluid therein.

10. The hemostatic device of claim 9, wherein both the primary balloon and the secondary balloon possess interiors, and further comprising means for communicating the interior of the primary balloon with the interior of the secondary balloon.

11. The hemostatic device of claim 1, wherein the band and the balloon are made of materials which allow visualization of the site where bleeding is to be stopped.

12. The hemostatic device of claim 1, wherein the band holds the curved plate in such a way that at least of a portion of the curved plate overlaps with the balloon.

13. The hemostatic device of claim 1, wherein the curved plate includes opposing side end portions in a longitudinal direction of the band, the curved plate defining, on the side end portion corresponding to the terminal end of the balloon that is connected to the band, a portion with a smaller radius of curvature than the other side end portion of the curved plate.

14. A hemostatic device comprising:

a flexible substantially transparent band adapted to be wrapped around a limb of a patient at a site on the limb where bleeding is to be stopped;

means for securing the flexible substantially transparent band in a wrapped state to the patient'"'"'s limb;

a substantially transparent curved plate having an inner peripheral surface, the substantially transparent curved plate being made of a material more rigid than the flexible substantially transparent band and at least a portion of which is curved toward the inner peripheral surface;

a balloon provided on the inner peripheral surface of the substantially transparent curved plate, the balloon being inflatable when a fluid is introduced into the balloon;

the substantially transparent curved plate possessing a curved portion offset towards a first end of the substantially transparent curved plate from a center portion of the substantially transparent curved plate in the lengthwise direction of the flexible substantially transparent band; and

a pressing member configured to press against the balloon, the pressing member being positioned between the curved plate and the balloon so that at least a portion of the pressing member overlies the balloon;

a marker for positioning the balloon at the site where bleeding is to be stopped, the marker being provided on the pressing member.

15. The hemostatic device of claim 14, wherein the curved portion of the substantially transparent curved plate overlies the pressing member.

16. The hemostatic device of claim 14, wherein the pressing member is smaller than the balloon.

17. A hemostatic device comprising:

a flexible band adapted to be wrapped around a limb of a patient at a site on the limb where bleeding is to be stopped;

means for securing the band in a wrapped state to the patient'"'"'s limb;

a curved plate having an inner peripheral surface, the plate being made of a material more rigid than the band;

a balloon provided on the inner peripheral surface of the curved plate and configured to be inflated when a fluid is introduced into the balloon;

a pressing member configured to press against the balloon, the pressing member being positioned between the curved plate and the balloon so that at least a portion of the pressing member overlies the balloon;

wherein the balloon includes opposing first and second terminal ends in the lengthwise direction of the flexible band, the balloon being connected to the band at only one of the first and second terminal ends; and

wherein the pressing member includes opposing first and second terminal ends in the lengthwise direction of the flexible band, the pressing member being connected to the band at only one of the first and second terminal ends.

18. The hemostatic device of claim 17, further comprising a colored marker for positioning the balloon at the site where bleeding is to be stopped.

19. The hemostatic device of claim 18, wherein the marker is located on the pressing member.

20. The hemostatic device of claim 17, wherein the pressing member is smaller than the balloon and applies a pressing force to the balloon in an oblique direction with respect to the surface of the limb.

21. The hemostatic device of claim 17, wherein the marker is located on the pressing member.

22. The hemostatic device of claim 17, wherein the flexible band, the curved plate, the balloon and the pressing member are made of substantially transparent material which allows the site where bleeding is to be stopped to be viewed though the flexible band, through the curved plate, through the balloon and through the pressing member.