IP Library › Granted Patent US 12,257,401
Granted Patent B2
US 12,257,401 · App. 18/164,042 · Granted Mar 25, 2025

Steerable medical device handle

Inventors: Gareth Davies (Toronto, CA); Melanie Thompson Smith (Kingston, CA); Deepthi Gorapalli (Ottawa, CA); Steve Copeland (Barrie, CA); Robert Dickie (King City, CA); Amy Lefler (Mono, CA); Bogdan Beca (Thornhill, CA)
Assignee: Boston Scientific Medical Device Limited
A61M25/0136A61M25/0147
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Quick Facts
Patent No.
US 12,257,401
App. No.
18/164,042
Granted
Mar 25, 2025
Kind
B2
Abstract

A steerable catheter control handle and method are provided for bi-directional control of a steerable catheter, the catheter including at least two control wires, a distal end of each of the control wires being coupled to the catheter at a distal region thereof. The control system comprises a housing. A wire actuation mechanism is disposed within the housing and is operably coupled to at least two control wires for enabling actuation of the at least two control wires. The steerable catheter control handle additionally comprises a proximal control knob that is operably coupled to the wire actuation mechanism to enable actuation of the at least two control wires for causing a distal end deflection of the steerable catheter.

Claims (28)

1. A steerable catheter control system for bi-directional control of a steerable catheter, the catheter comprising at least two control wires, a distal end of each of the control wires being coupled to the catheter at a distal region thereof, the control system comprising:

a housing coupled to the catheter, the housing defining an inner housing and a longitudinal axis;

a slide assembly positioned within the inner housing and operable to translate linearly therein along the longitudinal axis;

a proximal portion of the at least two control wires being positioned through the slide assembly;

wherein one of the at least two control wires is indirectly coupled to the slide assembly via a direction reversing element;

a slack limiting element positioned within the inner housing, coupled to at least one of the at least two control wires;

wherein the slack limiting element allows frictional engagement of the one of the at least two control wires to limit slack to a portion of the one of the at least two control wires, wherein the slack limiting element comprises a biased friction device comprising a friction block, a clip coupled to the friction block, wherein the clip is biased towards the friction block, wherein the clip comprises a perpendicular arm extending towards the friction block, the perpendicular arm being perpendicular to the longitudinal axis, and wherein the at least one of the at least two control wires passes through the biased friction device such that the at least one of the at least two control wires is held between the clip and the friction block; and,

a control knob rotatably coupled to the housing for linearly translating the slide assembly with respect to the control knob and the direction reversing element via rotation of the control knob about the longitudinal axis, thereby enabling the slide assembly to manipulate each of the at least two control wires, effecting a change in deflection of said catheter.

2. The control system of claim 1 , wherein the clip comprises a spring biased mechanism to bias the clip towards the friction block.

3. The control system of claim 1 , wherein the friction block comprises rubber and the clip comprising the perpendicular arm extending towards the friction block comprises a wire band.

4. The control system of claim 1 , further comprising a direction reversing element guide to trap the one of the at least two control wires around the direction reversing element.

5. The control system of claim 4 , wherein the direction reversing element is a pulley and the direction reversing element guide comprises a pulley guide.

6. The control system of claim 5 , wherein the pulley guide comprises a groove around the pulley.

7. The control system of claim 5 , wherein the pulley guide is adjacent to the pulley and at least partially surrounds a circumference of the pulley such that the one of the at least two control wires is positioned between the pulley and the pulley guide.

8. The control system of claim 7 , wherein the pulley guide further comprises projections extending inwardly from the pulley guide towards the pulley to control movement of the one of the at least two control wires positioned around the pulley.

9. A steerable catheter comprising:

a catheter having a housing and a catheter body having at least two control wires, a distal end of each of the control wires coupled to a distal region of the catheter body, the housing defining a longitudinal axis;

a slide assembly positioned within the housing and operable to translate linearly therein along the longitudinal axis;

a proximal portion of the at least two control wires being positioned through the slide assembly, one of the control wires indirectly coupled to the slide assembly via a direction reversing element;

a slack limiting element positioned within the housing, coupled to at least one of the control wires, the slack limiting element allowing frictional engagement of the control wire to limit slack to a portion of the control wire, wherein the slack limiting element comprises a biased friction device comprising a friction block, a clip coupled to the friction block, wherein the clip is biased towards the friction block, wherein the clip comprises a perpendicular arm extending towards the friction block, the perpendicular arm being perpendicular to the longitudinal axis, and wherein the at least one of the at least two control wires passes through the biased friction device such that the at least one of the at least two control wires is held between the clip and the friction block; and

a control knob rotatably coupled to the housing for linearly translating the slide assembly with respect to the control knob and the direction reversing element via rotation of the control knob about the longitudinal axis, thereby effecting a change in deflection of said catheter.

10. The catheter of claim 9 , wherein the clip comprises a spring biased mechanism to bias the clip towards the friction block.

11. The catheter of claim 9 , wherein the friction block comprises rubber and the clip comprising the perpendicular arm extending towards the friction block comprises a wire band.

12. The catheter of claim 9 , further comprising a direction reversing element guide to trap the one of the at least two control wires around the direction reversing element.

13. The catheter of claim 12 , wherein the direction reversing element is a pulley and the direction reversing element guide comprises a pulley guide.

14. The catheter of claim 13 , wherein the pulley guide comprises a groove around the pulley.

15. The catheter of claim 13 , wherein the pulley guide is adjacent to the pulley and at least partially surrounds a circumference of the pulley such that the one of the at least two control wires is positioned between the pulley and the pulley guide.

16. The catheter of claim 15 , wherein the pulley guide further comprises projections extending inwardly from the pulley guide towards the pulley to control movement of the one of the at least two control wires positioned around the pulley.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 17, 2023
From: DAVIES, GARETH; THOMPSON SMITH, MELANIE; GORAPALLI, DEEPTHI; COPELAND, STEVE; DICKIE, ROBERT G.; LEFLER, AMY; BECA, BOGDAN
To: BOSTON SCIENTIFIC MEDICAL DEVICE LIMITED
Reel/Frame 063345/0989 →
Continuity (5)
Continuation 16848926 · Apr 15, 2020
Continuation 15106584
Provisional Application 61918848 · Dec 20, 2013
Provisional Application 61918800 · Dec 20, 2013
Related Publication 20230218862A1 · Jul 13, 2023
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