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US 12,734,332 B2Granted
Telescoping catheter system having clutch mechanism
AssigneeMarvao Medical Devices, Ltd.
InventorsChris Davey, John Culloty, Sean Hehir
Life of this patent
Estimating the term…
Abstract
A telescoping catheter system equipped with a clutch mechanism that enables an Interventionalist to selectively lock inner and outer catheters together after adjusting their relative positions for optimal performance at the beginning of an interventional procedure, and to also unlock and reposition the catheters as needed to reestablish optimal performance at any subsequent point in the procedure.
Claims14
A telescoping catheter system comprising:
- an inner catheter having a lumen configured to receive a guidewire;
- an outer catheter having a lumen configured to receive the inner catheter, wherein the outer catheter has a proximal, rear end having a hub, wherein a portion of the inner catheter protrudes proximally from the outer catheter;
- and
- a clutch apparatus configured to selectively couple and decouple the inner and outer catheters, wherein the clutch apparatus comprises:
- a body fixedly secured to the hub of the outer catheter;
- and
- a collar slidably coupled to and positioned over the body, wherein the collar is configured for axial movement relative to the body in order to selectively engage or disengage the portion of the inner catheter that protrudes proximally from the outer catheter, wherein the collar comprises an inner surface that faces the body of the clutch apparatus, wherein the body of the clutch apparatus comprises a wall that defines a lumen, the wall of the body of the clutch apparatus defining an opening in communication with the lumen:
- a projection extending radially inwardly from the inner surface of the collar;
- and
- an insert positioned within the opening of the wall of the body of the clutch apparatus,
- wherein the slidable collar is movable between:
- a first, rearward position along a length of the body of the clutch apparatus in which the projection is axially spaced from the insert;
- and
- a second, forward position along the length of the body of the clutch apparatus in which the projection engages the insert to effect radial movement of the insert into the lumen to engage the inner catheter and axially fix the inner catheter with respect to the outer catheter,
- wherein when the clutch apparatus couples the inner and outer catheters together, the inner and outer catheters are configured for axial movement as a unitary structure, and wherein when the inner and outer catheters are decoupled, the inner and outer catheters are configured for independent telescoping axial movement.
12 more elements
A telescoping catheter system comprising:
- an inner catheter having a lumen configured to receive a guidewire;
- an outer catheter having a lumen configured to receive the inner catheter, wherein the outer catheter has a proximal, rear end having a hub, wherein a portion of the inner catheter protrudes proximally from the outer catheter;
- and
- a clutch apparatus configured to selectively couple and decouple the inner and outer catheters, wherein the clutch apparatus comprises:
- a body fixedly secured to the hub of the outer catheter;
- and
- a collar slidably coupled to and positioned over the body, wherein the collar is configured for axial movement relative to the body in order to selectively engage or disengage the portion of the inner catheter that protrudes proximally from the outer catheter,
- wherein when the clutch apparatus couples the inner and outer catheters together, the inner and outer catheters are configured for axial movement as a unitary structure, and wherein when the inner and outer catheters are decoupled, the inner and outer catheters are configured for independent telescoping axial movement,
- wherein the collar comprises an inner surface that faces the body of the clutch apparatus, wherein the body of the clutch apparatus comprises a wall that defines a lumen, the telescoping catheter system further comprising a compressible insert positioned within the lumen defined by the wall of the body of the clutch apparatus, the compressible insert defining a central bore configured to receive a portion of the inner catheter, and
- wherein the collar comprises at least one projection that extends radially inwardly from the inner surface of the collar, wherein the wall of the body of the clutch apparatus has an outer surface that defines at least one groove, wherein the collar is slidably movable relative to the body of the clutch apparatus between:
- a first, forward position in which the at least one projection of the collar is received within the at least one groove of the wall of the body of the clutch apparatus and does not cause radial compression of the compressible insert;
- and
- a second, rearward position in which the at least one projection of the collar engages the outer surface of the wall of the body of the clutch apparatus to cause radial compression of the compressible insert to grip a portion of the inner catheter.
10 more elements
Dependencies are inferred from the claim text.