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US 11,445,999 B2Granted
Medical device
AssigneeTerumo Kabushiki Kaisha
InventorYasunori Yamashita
Life of this patent
Estimating the term…
Abstract
An imaging medical device includes a shaft main body portion having an image acquiring lumen and a guide wire lumen. The shaft main body portion includes a first shaft proximal portion in which the image acquiring lumen is disposed, and a second shaft proximal portion in which the guide wire lumen is disposed, with the two being bifurcated. First and second hub portions are interlocked with the first and second shaft proximal portions respectively, and a transducer unit is fixed to a drive shaft. Reference line X represents the axis line of the shaft main body portion, θ1 represents the inclination of the central axis of the first hub portion relative to the reference line, θ2 represents the inclination of the central axis of the second hub portion relative to the reference line, and the relationship of |θ1|>|θ2| is satisfied.
Claims19
An image-acquiring medical device insertable into a body lumen to acquire images inside the body lumen, the image-acquiring medical device comprising:
- a shaft main body portion possessing a distal end at one end of the shaft main body portion and a proximal end at an opposite end of the shaft main body portion, the shaft main body portion including two lumens extending throughout a length of the shaft main body portion from the distal end of the shaft main body portion to the proximal end of the shaft main body portion, the two lumens of the shaft main body portion being separated from one another along the length of the shaft main body portion by a wall, the two lumens in the shaft main body portion comprising an image acquiring lumen and a guide wire lumen for receiving a guide wire;
- a proximal portion of the shaft main body portion including a first shaft proximal portion, in which a portion of the image acquiring lumen is disposed, and a second shaft proximal portion, in which a portion of the guide wire lumen is disposed, the first shaft proximal portion and the second shaft proximal portion being bifurcated;
- a drive shaft rotatably positioned in the image acquiring lumen and axially movable in the image acquiring lumen, the drive shaft possessing a distal end;
- a transducer unit configured to acquire images, the transducer unit being fixed to the distal end of the drive shaft so that axial and rotational movement of the drive shaft results in axial and rotational movement respectively of the transducer unit;
- a shaft distal portion connected to the distal end of the shaft main body portion, the shaft distal portion possessing a distal end and a proximal end, the shaft distal portion including only a single lumen, the single lumen in the shaft distal portion extending from the proximal end of the shaft distal portion to the distal end of the shaft distal portion, the single lumen in the shaft distal portion having an open distal end at the distal end of the shaft distal portion and having an open proximal end at the proximal end of the shaft distal portion, the single lumen in the shaft distal portion being open to outside the shaft distal portion only by way of the open distal end of the lumen at the distal end of the shaft distal portion, the single lumen in the shaft distal portion communicating with both the guide wire lumen and the image acquiring lumen so that:
- i) the guide wire is guidable along the guide wire lumen in the shaft main body portion and along the single lumen in the shaft distal portion while extending distally beyond the open distal end of the shaft distal portion and proximally beyond a proximal end of the second shaft proximal portion;
- and
- ii) the drive shaft is positionable in the image acquiring lumen in the shaft main body portion and in the single lumen in the shaft distal portion so that the transducer unit is positioned in the single lumen in the shaft distal portion;
- a hub that includes a first hub portion interlocked with the first shaft proximal portion and a second hub portion interlocked with the second shaft proximal portion, the first hub portion possessing a central axis and the second hub portion possessing a central axis;
- wherein the shaft main body portion possesses an axis line constituting a reference line;
- wherein an inclination of the central axis of the first hub portion with respect to the reference line is represented by an angle θ1;
- wherein an inclination of the central axis of the second hub portion with respect to the reference line is represented by θ2;
- and
- wherein a relationship of |θ1|>|θ2| is satisfied.
11 more elements
An image-acquiring medical device insertable into a body lumen to acquire images inside the body lumen, the image-acquiring medical device comprising:
- a shaft main body portion possessing a distal end at one end of the shaft main body portion and a proximal end at an opposite end of the shaft main body portion, the shaft main body portion including two lumens extending throughout a length of the shaft main body portion from the distal end of the shaft main body portion to the proximal end of the shaft main body portion, the two lumens of the shaft main body portion being separated from one another along the length of the shaft main body portion by a wall, the two lumens in the shaft main body portion comprising an image acquiring lumen and a guide wire lumen for receiving a guide wire, the image acquiring lumen having an open distal end, the guide wire lumen having an open distal end;
- a proximal portion of the shaft main body portion including a first shaft proximal portion, in which a portion of the image acquiring lumen is disposed, and a second shaft proximal portion, in which a portion of the guide wire lumen is disposed, the first shaft proximal portion possessing a central axis and an outer periphery, and the second shaft proximal portion possessing a central axis and an outer periphery, the first shaft proximal portion and the second shaft proximal portion being bifurcated so that the central axis of the first shaft proximal portion and the central axis of the second shaft proximal portion are other than parallel and so that a space exists between the outer periphery of the first shaft proximal portion and the outer periphery of the second shaft proximal portion;
- a drive shaft rotatably positioned in the image acquiring lumen and axially movable in the image acquiring lumen, the drive shaft possessing a distal end;
- a transducer unit configured to acquire images, the transducer unit being fixed to the distal end of the drive shaft so that axial and rotational movement of the drive shaft results in axial and rotational movement respectively of the transducer unit;
- a shaft distal portion connected to the distal end of the shaft main body portion, the shaft distal portion possessing a distal end and a proximal end, the shaft distal portion including a lumen that extends from the proximal end of the shaft distal portion to the distal end of the shaft distal portion, the lumen in the shaft distal portion having an open distal end at the distal end of the shaft distal portion and having an open proximal end at the proximal end of the shaft distal portion, the lumen in the shaft distal portion opening to outside the shaft distal portion only at the open distal end of the lumen in the shaft distal portion, the open distal end of the image acquiring lumen and the open distal end of the guide wire lumen both communicating with and opening into the open proximal end of the lumen in the shaft distal portion so that:
- i) the guide wire positioned in the guide wire lumen in the shaft main body portion is guidable into the lumen in the shaft distal portion and through the open distal end of the lumen in the shaft distal portion while also extending proximally beyond a proximal end of the second shaft proximal portion;
- and ii) the drive shaft positioned in the image acquiring lumen in the shaft main body portion is guidable into the lumen in the shaft distal portion while also extending proximally beyond a proximal end of the first shaft proximal portion;
- a hub that includes a first hub portion interlocked with the first shaft proximal portion and a second hub portion interlocked with the second shaft proximal portion, the first hub portion possessing a central axis and the second hub portion possessing a central axis;
- wherein the shaft main body portion possesses an axis line constituting a reference line;
- wherein an inclination of the central axis of the first hub portion with respect to the reference line is represented by an angle θ1;
- wherein an inclination of the central axis of the second hub portion with respect to the reference line is represented by θ2;
- and
- wherein a relationship of |θ1|>|θ2| is satisfied.
10 more elements
An image-acquiring medical device insertable into a body lumen to acquire images inside the body lumen, the image-acquiring medical device comprising:
- a shaft main body portion possessing a distal end at one end of the shaft main body portion and a proximal end at an opposite end of the shaft main body portion, the shaft main body portion including two lumens extending throughout a length of the shaft main body portion from the distal end of the shaft main body portion to the proximal end of the shaft main body portion, the two lumens of the shaft main body portion being separated from one another along the length of the shaft main body portion by a wall, the two lumens in the shaft main body portion comprising an image acquiring lumen and a guide wire lumen, the image acquiring lumen having an open distal end, the guide wire lumen having an open distal end;
- a proximal portion of the shaft main body portion including a first shaft proximal portion, in which a portion of the image acquiring lumen is disposed, and a second shaft proximal portion, in which a portion of the guide wire lumen is disposed, the first shaft proximal portion possessing a central axis and an outer periphery, and the second shaft proximal portion possessing a central axis and an outer periphery, the first shaft proximal portion and the second shaft proximal portion being bifurcated so that the central axis of the first shaft proximal portion and the central axis of the second shaft proximal portion are other than parallel and so that a space exists between the outer periphery of the first shaft proximal portion and the outer periphery of the second shaft proximal portion;
- a shaft distal portion connected to the distal end of the shaft main body portion, the shaft distal portion possessing a distal end and a proximal end, the shaft distal portion including a lumen that extends from the proximal end of the shaft distal portion to the distal end of the shaft distal portion, the lumen in the shaft distal portion having an open distal end at the distal end of the shaft distal portion and having an open proximal end at the proximal end of the shaft distal portion, the lumen in the shaft distal portion opening to outside the shaft distal portion only at the open distal end of the lumen in the shaft distal portion;
- a drive shaft rotatably positioned in the image acquiring lumen and axially movable in the image acquiring lumen, the drive shaft possessing a distal end;
- a transducer unit configured to acquire images, the transducer unit being fixed to the distal end of the drive shaft so that axial and rotational movement of the drive shaft results in axial and rotational movement respectively of the transducer unit, the transducer unit being positioned in the image acquiring lumen and being movable into the lumen in the shaft distal portion;
- the open distal end of the guide wire lumen communicating with and opening into the open proximal end of the lumen in the shaft distal portion;
- a guide wire positioned in the guide wire lumen in the shaft main body portion and in the lumen in the shaft distal portion, the guide wire passing through the open distal end of the lumen in the shaft distal portion while also extending proximally beyond a proximal end of the second shaft proximal portion;
- the open distal end of the image acquiring lumen communicating with and opening into the open proximal end of the lumen in the shaft distal portion so that the drive shaft positioned in the image acquiring lumen in the shaft main body portion is guidable into the lumen in the shaft distal portion while also extending proximally beyond a proximal end of the first shaft proximal portion;
- a hub that includes a first hub portion interlocked with the first shaft proximal portion and a second hub portion interlocked with the second shaft proximal portion, the first hub portion possessing a central axis and the second hub portion possessing a central axis;
- wherein the shaft main body portion possesses an axis line constituting a reference line;
- wherein an inclination of the central axis of the first hub portion with respect to the reference line is represented by an angle θ1;
- wherein an inclination of the central axis of the second hub portion with respect to the reference line is represented by θ2;
- and
- wherein a relationship of |θ1|>|θ2| is satisfied.
11 more elements
Dependencies are inferred from the claim text.