Hemostatic Device

Abstract

A hemostatic device is provided with: a first tubular member; a positioning member having a first engagement section and engageable with an opening of a blood vessel; a hemostatic agent arranged further to a proximal end side than the first engagement section of the first positioning member; a push-out member making it possible to push the hemostatic agent out from a distal end section of the first tubular member when the push-out member is moved; a first operation unit for executing a first distal end operation for causing the first tubular member and the push-out member to move in a relative manner to a distal end side, and a second distal end operation for causing the push-out member to move in a relative manner to the distal end side; and a switching mechanism for restricting the second distal end operation until the first distal end operation is completed.

What is claimed is: 
     
         1 . A hemostatic device that closes a puncture hole extending to skin from an opening formed in a blood vessel, the hemostatic device comprising:
 a positioning member including an extending section extending in an extending direction, and a first engagement section provided at a distal end section of the extending section in the extending direction and engageable with the opening,   a hemostatic agent disposed further to a proximal end side than the first engagement section of the positioning member;   a push-out member including a push-out distal end positioned further to the proximal end side than the hemostatic agent, and able to move the hemostatic agent to   a distal end side, using the push-out distal end, when the push-out member moves relatively to the distal end side with respect to the positioning member;   a restricting member able to restrict relative movement of the push-out member to the distal end side with respect to the positioning member;   a switching member able to switch a state of the restricting member between a restricting state that restricts the relative movement of the push-out member, and an enabling state that does not restrict the relative movement of the push-out member; and   a housing configured to house at least a part of each of the positioning member, the push-out member, the restricting member, and the switching member,   wherein   the switching member switches the restricting member to the enabling state when the positioning member moves relatively to the distal end side with respect to the housing when the restricting member is in the restricting state, and   after being switched from the restricting state to the enabling state, the restricting member is maintained in the enabling state, irrespective of relative movement of the positioning member with respect to the housing.   
     
     
         2 . The hemostatic device according to  claim 1 , further comprising:
 a first moving member configured to move relatively inside a first movement region with respect to the restricting member, in accordance with the relative movement of the push-out member with respect to the positioning member,   wherein   the restricting member includes a limiting section that is disposed in the first movement region when the restricting member is in the restricting state, and is not disposed in the first movement region when the restricting member is in the enabling state, and   the switching member switches the restricting member from the restricting state to the enabling state by switching the limiting section from a state of being disposed in the first movement region to a state of not being disposed in the first movement region.   
     
     
         3 . The hemostatic device according to  claim 2 , wherein
 the first moving member includes a second engagement section that engages with the limiting section when the limiting section is disposed in the first movement region and does not engage with the limiting section when the limiting section is not disposed in the first movement region,
 the limiting section further includes an urging section that urges the limiting section from a state in which the limiting section is engaged with the second engagement section toward a state in which the limiting section is not engaged with the second engagement section, and 
   the switching member switches the restricting member from the restricting state to the enabling state by switching from the state in which the limiting section is engaged with the second engagement section to the state in which the limiting section is not engaged with the second engagement section.   
     
     
         4 . The hemostatic device according to  claim 3 , wherein
 the switching member switches from the state in which the limiting section is engaged with the second engagement section to the state in which the limiting section is not engaged with the second engagement section by moving relatively to the distal end side with respect to the first moving member, in accordance with the positioning member moving relatively to the distal end side with respect to the housing.   
     
     
         5 . The hemostatic device according to  claim 3 , wherein
 the urging section is a spring.   
     
     
         6 . The hemostatic device according to  claim 1 , further comprising:
 a notification section configured to perform notification of a condition according to a relative movement amount, to the distal end side, of the positioning member with respect to the housing.   
     
     
         7 . The hemostatic device according to  claim 6 , further comprising:
 a second moving member configured to move relatively to the distal end side with respect to the housing, in accordance with the relative movement, to the distal end side, of the positioning member with respect to the housing,   wherein   the notification section performs the notification of the condition according to a movement amount of the second moving member.   
     
     
         8 . The hemostatic device according to  claim 1 , further comprising:
 a third moving member configured to move relatively to the distal end side with respect to the housing, in accordance with the relative movement, to the distal end side, of the positioning member with respect to the housing,   wherein   the third moving member includes a first magnet, and   the housing includes a second magnet that faces the first magnet when the switching member causes the restricting member to be in the enabling state.   
     
     
         9 . The hemostatic device according to  claim 8 , wherein
 the housing further includes a third magnet disposed to the distal end side of the second magnet, and   a magnetic force acting between the first magnet and the second magnet when the first magnet and the second magnet are facing each other is greater than a magnetic force acting between the first magnet and the third magnet when the first magnet and the third magnet are facing each other.   
     
     
         10 . The hemostatic device according to  claim 2 , wherein
 the first engagement section is a balloon able to switch between an inflated state and a contracted state, and   the balloon engages with the opening when in the inflated state.