HEMOSTATIC DEVICE

• US 20180000493A1
• Filed: 09/15/2017
• Published: 01/04/2018
• Est. Priority Date: 07/15/2002
• Status: Active Grant

• Current Assignee: Terumo Kabushiki Kaisha
• Original Assignee: Terumo Kabushiki Kaisha
• Inventors: WADA, Satoshi, NUMATA, Shigeki, YAGI, Hiroshi
• Granted Patent: US 9,936,959 B2
• Time in Patent Office: Days
• 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 configured to be applied to a limb of a patient, the hemostatic device comprising:

a flexible band to be applied to the limb of the patient in a wrapped state in which the flexible band is wrapped around at least a portion of the limb of the patient to apply the hemostatic device to the limb of the patient at a site where bleeding is to be stopped;

an elongated member made of a material more rigid than the flexible band, the elongated member and the flexible band being connected to each other so that when the flexible band is in the wrapped state the elongated member is positioned on the limb of the patient at the site on the limb where bleeding is to be stopped, the elongated member possessing an inner peripheral side which faces toward the limb of the patient when the flexible band is in the wrapped state, a portion of the inner peripheral side of the elongated member being a curved portion that is curved toward the inner peripheral side;

means for securing the flexible band in the wrapped state to the patient'"'"'s limb,

an inflatable balloon that is inflatable upon introducing fluid into the balloon, the balloon being located on the inner peripheral side of the elongated member at a position deviated to a first end of the elongated member from a center portion of the elongated member in the lengthwise direction of the flexible band; and

the portion of the inner peripheral side of the elongated member that is curved being between the center portion of the elongated member and the first end of the elongated member.

2. The hemostatic device according to claim 1, wherein the elongated member is a plate.

3. The hemostatic device according to claim 1, wherein the portion of the inner peripheral side of the elongated member that is curved is a first part of the elongated member, the elongated member also possessing an outer peripheral side, the outer peripheral side of the first part of the elongated member being curved.

4. The hemostatic device according to claim 1, wherein the portion of the inner peripheral side of the elongated member that is curved is a first portion, a second portion of the inner peripheral side of the elongated member being flat.

5. The hemostatic device according to claim 1, wherein the portion of the inner peripheral side of the elongated member that is curved is a first portion, a second portion of the inner peripheral side of the elongated member also being curved, the first and second portions of the inner peripheral side of the elongated member being spaced apart with a flat portion of the inner peripheral side of the elongated member located between the first and second portions of the inner peripheral side of the elongated member.

6. The hemostatic device according to claim 1, wherein the elongated member possesses a longitudinal extent, the flexible band overlapping at least a part of the longitudinal extent of the elongated member.

7. The hemostatic device according to claim 1, wherein the elongated member includes a second end opposite the first end, the flexible band including a first part that extends beyond the first end of the elongated member and a second part that extends beyond the second end of the elongated member.

8. The hemostatic device according to claim 1, wherein the elongated member and the flexible band are connected to one another by virtue of a gap formed between two layers of the flexible band, and the elongated member being positioned in the gap.

9. The hemostatic device according to claim 1, wherein the elongated member is configured to permit the site on the limb where bleeding is to be stopped to be viewed through the elongated member.

10. The hemostatic device according to claim 9, wherein the balloon is substantially transparent to permit the site on the limb where bleeding is to be stopped to be viewed through the balloon.

11. The hemostatic device according to claim 9, wherein the elongated member is substantially transparent.

12. A hemostatic device comprising:

a flexible band configured to be wrapped around at least a portion of a limb of a patient to apply the hemostatic device to the limb of the patient at a site on a surface of the patient'"'"'s limb at which bleeding is to be stopped;

means for securing the flexible band in a wrapped state on the patient'"'"'s limb in which the flexible band is wrapped around at least a portion of the limb of the patient;

a curved portion possessing an inner side that faces towards the limb of the patient when the hemostatic device is applied to the limb of the patient, the curved portion being curved by virtue of the inner side of the curved portion being a curved inner side;

the curved portion being made of a material more rigid than the flexible band and maintaining a substantially fixed shape;

the curved portion being provided on the flexible band so that when the hemostatic device is applied to the limb of the patient the curved inner side of the curved portion faces the limb of the patient;

an inflatable balloon that inflates when a fluid is introduced into the balloon, the inflatable balloon being located at the curved inner side of the curved portion, the balloon applying a compressive force to the site on the surface of the patient'"'"'s limb in an oblique direction with respect to the surface of the limb when the hemostatic device is applied to the limb of the patient and the balloon is inflated.

13. The hemostatic device according to claim 12, wherein the curved portion that is more rigid than the flexible band possesses an outside surface that is curved.

14. The hemostatic device according to claim 12, wherein the curved portion is a part of a plate, the plate also including a flat portion possessing an inner side that faces towards the limb of the patient when the hemostatic device is applied to the limb of the patient, the flat portion being flat by virtue of the inner side of the flat portion being a flat inner side.

15. The hemostatic device according to claim 12, wherein the curved portion possesses an outer side that is also curved.

16. The hemostatic device according to claim 12, wherein the curved portion is a part of a plate that possesses a longitudinal extent, the flexible band portion overlapping at least a part of the longitudinal extent of the plate.

17. The hemostatic device according to claim 12, wherein the curved portion and the balloon are substantially transparent to permit the site on the limb where bleeding is to be stopped to be viewed through both the curved portion and the balloon.

18. The hemostatic device according to claim 12, wherein the curved portion is a part of a plate, the plate also including a flat portion possessing an inner side that faces towards the limb of the patient when the hemostatic device is applied to the limb of the patient, the plat portion being flat by virtue of the inner side of the flat portion being a flat inner side, the balloon being located at a position deviated to a first end of the plate from a center portion of the plate in a lengthwise direction of the flat portion.