Umbrella catheter device

1 . A catheter device, comprising:

an inner tube having a proximal end and a distal end;

an outer tube disposed around the inner tube;

a capturing tool connected to the distal end of the inner tube, the capturing tool including a mesh adapted to capture an object within a body passage, the outer tube being configured to cover at least a portion of the capturing tool;

a handle connected to a proximal section of the inner tube and configured to retract the outer tube in a proximal direction relative to the inner tube to expose the capturing tool, the handle including:

a base that houses the proximal end of the inner tube and a proximal end of the outer tube;

a rotatable fixture mounted at a distal end of the base and configured to retract the outer tube in the proximal direction in response to rotation in a first direction and to advance the outer tube in a distal direction in response to rotation in a second direction opposite to the first direction,

a first grip member disposed at or proximate to the distal end of the base, the first grip member comprising finger loops on each side of the base;

a second grip member disposed at a proximal end of the base, the second grip member including a finger loop;

wherein at least one of the first grip member or the second grip member is configured to acuate the capturing tool from the expanded position towards the collapsed position; and

a driver connecting the capturing tool to the handle and configured to transmit a force from the handle to the capturing tool to actuate the capturing tool from an expanded position towards a collapsed position, the driver being disposed between the inner tube and the outer tube;

wherein the capturing tool is biased towards the expanded position such that the capturing tool automatically transitions into the expanded position in response the outer tube being retracted in the proximal direction.

2 . The catheter device of claim 1 , wherein:

the first grip member is configured to slide relative to the base in a proximal direction from a start position to an end position to transmit said force from the first grip member to the capturing tool via the driver to transition the capturing tool from the expanded position to the collapsed position; and

the second grip member is pivotable around a longitudinal axis of the proximal end of the base.

3 . The catheter device of claim 2 , wherein the handle further comprises:

a spring positioned within the base between the first grip member and a buttress, the spring being wrapped around the proximal section of the inner tube;

wherein the spring is configured to compel the first grip member towards the start position such that the spring becomes loaded or more loaded when the first grip member is forced towards the end position.

4 . The catheter device of claim 1 , wherein the capturing tool comprises:

a fitting fixed to the distal end of the inner tube; and

a plurality of ribs mounted around the fitting, each rib having a first end connected to the fitting and a second end connected to the driver;

wherein the mesh connects to at least the second end of each rib and is configured to cover a top-side of each rib.

5 . The catheter device of claim 4 , wherein each rib is configured to extend radially outward away from the inner tube and spread open the mesh when the capturing tool is in the expanded position.

6 . The catheter device of claim 4 , wherein the fitting is detachable from the distal end of the inner tube.

7 . The catheter device of claim 4 , wherein at least one rib of the plurality of ribs forms an arc shape from the respective first end and the respective second end.

8 . The catheter device of claim 4 , wherein the ribs are flexible.

9 . The catheter device of claim 1 , wherein the catheter device comprises multiple drivers that are positioned between the inner tube and the outer tube and extend from the handle to the capturing tool, each driver being configured to transmit said force from the handle to the capturing tool to actuate the capturing tool from the expanded position towards the collapsed position.

10 . The catheter device of claim 1 , wherein the driver comprises a suture.

11 . The catheter device of claim 1 , wherein the mesh comprises a plurality of filaments that are woven together.

12 . The catheter device of claim 1 , wherein the second grip member is configured to pivot around an axis of the proximal end of the handle base for ergonomic support during operation.

13 . A catheter device, comprising:

an inner tube having a proximal end and a distal end;

an outer tube disposed around the inner tube;

a capturing tool connected to the distal end of the inner tube, the outer tube being configured to cover at least a portion of the capturing tool, the capturing tool including:

a fitting that is fixed to the distal end of the inner tube,

a plurality of ribs mounted around the fitting, each rib having a first end connected to the fitting and a second end connected to the driver, and

a mesh that is connected to at least the second end of each rib and configured to cover a top-side of each rib, the mesh being adapted to capture an object within a body passage,

a handle connected to a proximal section of the inner tube and configured to retract the outer tube in a proximal direction relative to the inner tube to expose the capturing tool, the handle including:

a base that houses the proximal end of the inner tube and a proximal end of the outer tube;

a rotatable fixture mounted at a distal end of the base and configured to retract the outer tube in the proximal direction in response to rotation in a first direction and to advance the outer tube in a distal direction in response to rotation in a second direction opposite to the first direction,

a first grip member disposed at or proximate to the distal end of the base; the first grip member comprising finger loops on each side of the base;

a second grip member disposed at a proximal end of the base, the second grip member including a finger loop;

wherein at least one of the first grip member or the second grip member is configured to acuate the capturing tool from the expanded position towards the collapsed position; and

a driver connecting the capturing tool to the handle and configured to transmit a force from the handle to the capturing tool to actuate the capturing tool from an expanded position towards a collapsed position, the driver being disposed between the inner tube and the outer tube;

wherein the capturing tool is biased towards the expanded position such that the capturing tool automatically transitions into the expanded position in response the outer tube being retracted in the proximal direction;

wherein the handle has a tube port connected to the inner tube and the fitting has a distal end with an access port that is connected to the inner tube, such that the tube port, inner tube and access port form a continuous channel.

14 . The catheter device of claim 13 , wherein the fitting is detachably connected to the distal end of the inner tube to allow replacement of the capturing tool.