US 2026/0157747 A1Published application

Filament cutting devices, systems, and methods

AssigneeBoston Scientific Scimed, Inc.

InventorsJuan P. Ortiz Garcia, John Gamboa, Yeison Calvo, Julian Fuentes Castro, Rosa A. Perez, Anne Sluti, Juan C. Rodriguez Salazar, John F. Howard, Barry Weitzner

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Abstract

A filament cutting device may include an outer sheath. A bushing may be coupled to a distal end of the outer sheath. An inner diameter of the bushing may be a cutting edge at a distal tip of the bushing. An actuation wire may be slidably extendable within the outer sheath and bushing. An engaging body may be coupled to a distal end of the actuation wire. A cavity may be defined along a length of the engaging body configured to capture a portion of the filament within the cavity. Movement of the actuation wire and engaging body with the filament captured within the cavity may cause the cutting edge to sever the filament.

Claims20

Dependent claims

A method of cutting a filament within a patient's body, the method comprising:

advancing a flexible outer sheath within a patient;
advancing a bushing coupled to a distal end of the flexible outer sheath to a filament within the patient, the bushing defining a radial cavity along a length of the bushing and extending radially inwardly through a wall of the bushing, and having an engaging body extendable therein, the engaging body defining a radial cavity along a length of the engaging body and further defining a hook shape with a proximally-extending tip along a distal portion thereof;
capturing a portion of a filament, in a radial direction, within the radial cavity of the bushing and within the radial cavity of the engaging body with the filament extending transversely across the longitudinal axis of the bushing and the engaging body;
and
axially moving the engaging body relative to the bushing to cause the hook shape of the engaging body to move the filament proximally to be severed.

2 more elements

A method of cutting a filament within a patient's body, the method comprising:

advancing a flexible outer sheath within a patient and allowing the flexible outer sheath to bend within tortuous internal anatomies of the patient;
advancing a bushing coupled to a distal end of the flexible outer sheath to a filament within the patient, the bushing defining a radial cavity along a length of the bushing and extending radially inwardly through a wall of the bushing, and having an engaging body extendable therein, the engaging body defining a radial cavity along a length of the engaging body;
capturing a portion of a filament, in a radial direction, within the radial cavity of the bushing and within the radial cavity of the engaging body with the filament extending transversely across the longitudinal axis of the bushing and the engaging body;
and
axially moving the engaging body relative to the bushing to cause the filament to be severed.

2 more elements

A method of cutting a filament within a patient's body, the method comprising:

advancing a flexible outer sheath within a patient and allowing the flexible outer sheath to bend within tortuous internal anatomies of the patient;
advancing a bushing coupled to a distal end of the flexible outer sheath to a filament within the patient, the bushing defining a radial cavity along a length of the bushing and extending radially inwardly through a wall of the bushing and having a distal surface and a proximal surface, the distal surface extending from a distal end radially inwardly and proximally to a proximal end adjacent a distal end of the proximal surface, the bushing further having an engaging body extendable therein;
directing the filament, oriented transverse to the longitudinal axis of the bushing and the engaging body, along the radially-inwardly directed proximally-extending distal surface of the radial cavity of the bushing and into the radial cavity of the bushing and the radial cavity of the engaging body;
and
axially moving the engaging body relative to the bushing to cause the filament to be severed.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/183,120Filed 18 Apr 2025
Priority: 18 Oct 2019
Published: 11 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

A61B 17/0467
For suturing wounds; Holders or packages for needles or suture materials: instruments for cutting sutures
A61B 2017/320012
Abrasive: brushes
A61B 2017/320733
Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions: with a flexible cutting or…
A61B
Medical diagnosis and surgery

Family

Application62/923,042Us provisional application · filed 18 Oct 2019
Application63/011,388Us provisional application · filed 17 Apr 2020
Application17/071,493Continuation · filed 15 Oct 2020
Application19/183,120Continuation
US 2021/0113232 A1Published application
US 2026/0157747 A1This patent

From the US filing history. Foreign family members aren’t listed.