Needle handle with vacuum chamber

Patent metadata

Field	Value
Publication number	US-11992196-B2
Application number	US-202217706716-A
Country	US
Kind code	B2
Filing date	Mar 29, 2022
Priority date	Mar 23, 2017
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

A device having a sheath, a medical device, a stylet, a handle and a plunger device. The handle includes portions connected proximal ends of the sheath, the medical device and the stylet and a chamber portion connected to the actuator. The chamber portion includes a volume of space configured to volumetrically connect to at a lumen of the medical device, the sheath or the stylet and a plunger device configured to be slidably received within the chamber portion. The plunger device is able to pneumatically isolate a proximal portion of the volume of space from a distal portion of the volume of space. Proximal movement of the stylet and the plunger device cause a suction effect (i.e., reduced pressure) at the distal end of the sheath, the medical device and/or the stylet.

First claim

What is claimed is:

1. An apparatus comprising:
a medical device having a distal end and a proximal end,
the medical device comprising a lumen;
a stylet having a distal end and a proximal end,
the stylet includes a lumen, a distal port, and a proximal port;
a handle comprising:
an actuator connected to the proximal end of the medical device;
and a chamber portion connected to the actuator,
the chamber portion comprising a volume of space configured to volumetrically connect to the lumen of the medical device via the actuator;
and a plunger device disposed around the stylet proximal of the proximal port and within the chamber portion,
the plunger device including an outer edge in sealing contact with an inner wall of the chamber portion,
the outer edge of the plunger device operable to pneumatically isolate a proximal portion of a volume of air within the chamber portion from a distal portion of the volume of air within the chamber portion,
wherein proximal motion of the stylet is configured to cause proximal motion of the plunger device resulting in reduced pressure at the distal end of at least one of the medical device or the stylet.

2. The apparatus of claim 1 , wherein the plunger device comprises:
a plunger with a hole having a diameter dimension greater than a diameter dimension of the stylet;
and a tab attached to the stylet, the tab being located on a distal side of the plunger when the stylet is received through the hole within the chamber portion.

3. The apparatus of claim 2 , wherein proximal motion of the stylet is configured to cause the plunger to move as a result of the tab applying a proximal force to the plunger.

4. The apparatus of claim 2 , wherein at least one of pneumatic communication or fluidic communication exists between a proximal portion of the volume of space and a distal portion of the volume of space when the tab is not in contact with the plunger.

5. The apparatus of claim 2 , wherein the plunger device comprises a second tab attached to the stylet, the second tab is located on a proximal side of the plunger when the stylet is received through the hole within the chamber portion.

6. The apparatus of claim 5 , wherein at least one of pneumatic communication or fluidic communication exists between a proximal portion of the volume of space and a distal portion of the volume of space when the first tab and the second tab are not in contact with the plunger.

7. The apparatus of claim 5 , wherein
a distal motion of the stylet is configured to cause increased pressure at the distal end of at least one of the medical device or the stylet due to the plunger moving as a result of the second tab applying a distal force to the plunger.

8. The apparatus of claim 1 , wherein the medical device comprises a needle.

9. A method comprising:
moving a stylet in a proximal direction relative to a handle of a medical device,
wherein the stylet applies a proximal force to a plunger device located within a chamber of the handle,
wherein the moving of the plunger device occurs in a proximal direction relative to the chamber,
wherein the plunger device is disposed around the stylet within the chamber,
the plunger device includes an outer edge in sealing contact with an inner wall of the chamber,
the outer edge of the plunger device provides a separation between a first volume of space within the chamber and a second volume of space within the chamber,
the first volume of space being distal from the plunger device and the second volume the space being proximal from the plunger device;
and moving the plunger device proximally to reduce pressure at a distal end of at least one of the medical device or the stylet,
wherein the plunger device includes a first tab attached to the stylet and a plunger configured to seal with an inner wall of the chamber and wherein moving the plunger device includes:
moving the first tab into contact with the plunger;
and simultaneously moving the first tab and the plunger in the proximal direction.

10. The method of claim 9 , further comprising:
receiving a sample of tissue at the distal end of at least one of the medical device or the stylet based on the reduced pressure.

11. The method of claim 9 , further comprising:
passing a fluid from the second volume of space to the first volume of space when the first tab is not in contact with the plunger.

12. The method of claim 9 , wherein the plunger device further comprises a second tab attached to the stylet proximal from the plunger, the method further comprising:
moving the second tab into contact with the plunger;
and simultaneously moving the second tab and the plunger in the distal direction.

13. A method comprising:
moving a stylet in a proximal direction relative to a handle of a medical device,
wherein the stylet applies a proximal force to a plunger device located within a chamber of the handle,
wherein the moving of the plunger device occurs in a proximal direction relative to the chamber,
wherein the plunger device provides a separation between a first volume of space within the chamber and a second volume of space within the chamber,
the first volume of space being distal from the plunger device and the second volume the space being proximal from the plunger device;
and reducing pressure at a distal end of at least one of the medical device or the stylet based on proximal motion of the plunger device;
wherein the plunger device comprises:
a balloon attached to the stylet at first and second locations;
a first port located on the stylet between the first and second locations;
a second port located at or adjacent to a proximal end of the stylet;
and a lumen configured to connect the first port and the second port,
wherein moving the plunger device further comprises:
inflating the balloon using an air source coupled to the second port;
and moving the balloon in the proximal direction.

14. An apparatus comprising:
a medical device having a distal end and a proximal end, the medical device comprising a lumen;
a stylet having a distal end and a proximal end,
the stylet further comprising a port and a stylet lumen that extends from the proximal end of the stylet to the port;
a handle comprising:
an actuator connected to the proximal end of the medical device;
and a chamber portion connected to the actuator,
the chamber portion comprising a volume of space configured to volumetrically connect to the lumen of the medical device via the actuator;
a plunger device disposed around the stylet within the chamber portion and including an outer edge in sealing contact with an inner wall of the chamber portion,
the outer edge of the plunger device operable to pneumatically isolate a proximal portion of a volume of air within the chamber portion from a distal portion of the volume of air within the chamber portion,
the plunger device further comprising an inflatable balloon attached to the stylet around the port;
and at least one of a gas or a fluid source configured to supply a gas or a fluid into the inflatable balloon via the stylet lumen and the port,
wherein when the inflatable balloon is in an inflated state,
a portion of an outer surface of the balloon makes at least one of a pneumatic or fluidic seal with an inner wall of the chamber portion,
wherein proximal motion of the stylet causes proximal motion of the plunger device resulting in reduced pressure at the distal end of at least one of the medical device or the stylet.

15. The apparatus of claim 14 , wherein the gas or the fluid source comprises a pump device directly connected to the proxim

Assignees

• Gyrus Acmi Inc

Inventors

• Gonzalez Hugo X
• Parthiban Sujeeth
• Fu Chenhao
• Smith Michael S

Classifications

• A61B10/0283 Primary

  with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe (A61B10/025, A61B10/0266 take precedence) · CPC title

• A61B1/2676

  Bronchoscopes · CPC title

• A61B8/12

  in body cavities or body tracts, e.g. by using catheters · CPC title

• A61M25/10181

  Means for forcing inflation fluid into the balloon · CPC title

• A61M25/10186

  One-way valves · CPC title