Devices and methods for removing material from a patient

Patent metadata

Field	Value
Publication number	US-12440230-B2
Application number	US-202117928130-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	May 27, 2020
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

A containing element is used to capture material in a blood vessel for removal. The containing element is advanced through the blood vessel or a catheter in a constricted configuration. A control body is coupled to the containing element which assists moving the containing element. In some embodiments, the containing element is used for restricting blood flow within a vessel.

First claim

What is claimed is:

1. A system for removing occlusive material from vessels, the system comprising:
a catheter defining a lumen; and
a material removal device including:
a containing element including a distal opening and an outer wall portion, wherein the outer wall portion defines an expandable interior chamber; and
a distal control body extending through the distal opening,
wherein the distal control body is coupled to a distal portion of the containing element,
wherein the distal control body is configured to apply distally directed forces on the distal opening by translating the distal control body relative to the containing element,
wherein, when the material removal device is disposed within the catheter and a distal force is applied to the containing element by distally translating the distal control body, the containing element deploys from the catheter; and
wherein when the containing element is deployed from the catheter, applying a second distal force by distally translating the distal control body transitions the containing element into a collapsed configuration.

2. The system of claim 1 , wherein the expandable chamber is biased into an expanded configuration such that, when deployed from the catheter, the containing element transitions into the expanded configuration.

3. The system of claim 1 , wherein, when the containing element is in an expanded configuration within a vessel, the outer wall portion contacts a wall of the vessel and the containing element restricts antegrade flow in the vessel.

4. The system of claim 1 , wherein, the expandable interior chamber has an outward expansion pressure from and including about 760 mmHg to and including about 1000 mmHg.

5. The system of claim 1 further comprising a suction source in fluid communication with the lumen of the catheter.

6. The system of claim 5 , wherein, when the containing element is deployed from the catheter, an aspiration path extends from the distal opening of the containing element to the suction source, the aspiration path extending through each of the expandable chamber and the lumen of the catheter.

7. The system of claim 6 , wherein a portion of the aspiration path through the containing element is from and including 1 cm to and including 20 cm.

8. The system of claim 1 , wherein, when the containing element is deployed from the catheter and in an expanded configuration, a proximal portion of the containing element remains within the lumen of the catheter.

9. The system of claim 1 , wherein a proximal portion of the containing element includes a sealing surface that seals against the lumen of the catheter.

Assignees

• Penumbra Inc

Inventors

• Gamba Jorge
• Sauvageau Eric
• Schaller Michael

Classifications

• A61B2217/005

  with suction drainage system · CPC title

• A61B2017/2215

  having an open distal end · CPC title

• A61B2017/22094

  for crossing total occlusions, i.e. piercing · CPC title

• A61B17/221 Primary

  Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)} · CPC title

• A61B17/22 Primary

  Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for · CPC title