Hemostatic device

Patent metadata

Field	Value
Publication number	US-10939919-B2
Application number	US-201715642995-A
Country	US
Kind code	B2
Filing date	Jul 6, 2017
Priority date	Jul 6, 2016
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

A hemostatic device has a band for being wrapped around a puncture site P of a wrist W, securing means for securing the band in a state where the band is wrapped around the wrist, an inflation portion that interlocks with the band, and that is inflated by injecting gas, and an injection portion that can inject gas into the inflation portion. The injection portion is disposed in the band, and is foldable so as to decrease a space formed inside the injection portion. The hemostatic device can thus inflate an inflation portion without using a separate dedicated instrument, which can prevent a hemostasis-requiring site from being unintentionally compressed more than necessary.

First claim

What is claimed is:

1. A hemostatic device comprising:
a band for being wrapped around a hemostasis-requiring site of a limb;
securing means for securing the band in a state where the band is wrapped around the limb;
an inflation portion that interlocks with the band, and that is inflated by injecting gas; and
an injection portion that can inject gas into the inflation portion, the injection portion having an accommodation space which can accommodate the gas, an upper surface portion, and a hole portion that communicates with the accommodation space and is disposed below the upper surface portion,
wherein the injection portion is disposed on the band, and is configured to be foldable by moving the upper surface portion of the injection portion toward the inflation portion so as to decrease the accommodation space formed inside the injection portion, and to pressurize the gas and inject the pressurized gas into the inflation portion when the hole portion is closed and the injection portion is pressed and deformed to decrease the accommodation space,
wherein the injection portion has a securing mechanism for securing the injection portion in a state where the injection portion is folded,
wherein the injection portion has a plurality of side surfaces and the securing mechanism includes a first securing portion attached to an inner periphery of one of the plurality of side surfaces and a second securing portion configured to engage the first securing portion when the injection portion is folded, one of the first securing portion and the second securing portion being located below the hole portion in a state where the injection portion is not folded,
wherein the hole portion is disposed in one of said plurality of side surfaces.

2. The hemostatic device according to claim 1 ,
wherein the injection portion has an interlock portion and the plurality of side surfaces include a first side surface and a second side surface, an inner periphery and an outer periphery of the second side surface being larger than an inner periphery and an outer periphery of the first side surface, and the interlock portion configured to interlock the first side surface and the second side surface with each other, and
wherein the second side surface covers at least a portion of the outer periphery of the first side surface, in a state where the injection portion is folded.

3. The hemostatic device according to claim 1 ,
wherein the injection portion has a plurality of interlock portions interlocking adjacent side surfaces with each other, and
wherein one of the plurality of side surfaces disposed at a position closer to the band side has an inner periphery and an outer periphery which are smaller than those of the plurality of side surfaces disposed at a position separated from the band.

4. The hemostatic device according to claim 3 ,
wherein the plurality of interlock portions located between the adjacent side surfaces is angled relative to a plane parallel to the side surface, in a state where the injection portion is unfolded.

5. The hemostatic device according to claim 3 ,
wherein the plurality of interlock portions located between the adjacent side surfaces are orthogonal relative to a plane parallel to the side surface, in a state where the injection portion is unfolded.

6. The hemostatic device according to claim 1 ,
wherein the injection portion has a rigid portion which is less likely to be deformed than other portions of the injection portion when the injection portion is folded.

7. The hemostatic device according to claim 1 , wherein the injection portion is integrated with the band.

8. A hemostatic device comprising:
a band adapted to be wrapped around a limb of a patient at a site on the limb where bleeding is to be stopped;
securing means for securing the band in a wrapped state around the limb;
an inflation portion disposed on an inner peripheral surface of the band, and adapted to be inflated by injecting gas; and
an injection portion adapted to inject gas into the inflation portion, the injection portion having an accommodation space which can accommodate the gas, an upper surface portion, a plurality of side surfaces, and a hole portion that is disposed in one of said plurality of side surfaces below the upper surface portion and is configured to provide communication between the accommodation space and an outside space,
wherein the injection portion is configured to be foldable by moving an upper surface portion of the injection portion toward the inflation portion so as to thereby decrease the accommodation space formed inside the injection portion, and to pressurize the gas and inject the pressurized gas into the inflation portion when the hole portion is closed and the injection portion is pressed and deformed to decrease the accommodation space, and the injection portion includes a securing mechanism adapted to maintain the injection portion in a folded state,
wherein the securing mechanism includes a first securing portion attached to a first portion of an interior surface of the injection portion, and a second securing portion attached to a second portion of the interior surface of the injection portion different from the first portion and configured to engage the first securing portion when the injection portion is folded, one of the first securing portion and the second securing portion being located below the hole portion in a state where the injection portion is not folded.

9. The hemostatic device according to claim 8 , wherein the injection portion further includes a rigid portion, the rigid portion being less deformable than the plurality of side surfaces.

10. The hemostatic device according to claim 8 , further comprising a circulation channel configured to provide communication between the accommodation space of the injection portion and the inflation portion.

11. The hemostatic device according to claim 10 , wherein the circulation channel includes a backflow prevention mechanism.

12. The hemostatic device according to claim 8 , further comprising a discharge portion configured to provide communication between the inflation portion and the outside space.

13. The hemostatic device according to claim 12 , wherein the discharge portion includes a discharge port disposed on the band and a switching member configured to switch on and off communication between the discharge port and the outside space.

Assignees

• Terumo Corp

Inventors

• Hazama Kenichi
• Maeda Ryosuke

Classifications

• A61B2017/00907

  for light · CPC title

• A61B17/1325

  with means for applying local pressure (pressure pads A61F5/30) · CPC title

• A61M39/22

  Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)} · CPC title

• A61B17/135 Primary

  inflatable · CPC title