TISSUE REMOVAL SYSTEM

• US 20130046316A1
• Filed: 08/17/2012
• Published: 02/21/2013
• Est. Priority Date: 08/18/2011
• Status: Active Grant

• Current Assignee: Hologic Incorporated
• Original Assignee: Hologic Incorporated
• Inventors: Adams, Ronald D., Barnes, Andrew, Radziunas, Jeffrey, DiCesare, Paul, Sullivan, Roy H., Paul, Jo
• Granted Patent: US 9,060,760 B2
• Time in Patent Office: Days
• US Class Current: 606/115
• CPC Class Codes: A61B 10/0266 means for severing sample
• CPC Class Codes: A61B 10/0275 with sample notch, e.g. on the side of inner stylet
• CPC Class Codes: A61B 10/0283 with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe A61B10/025, A61B10/0266 take precedence
• CPC Class Codes: A61B 10/0291 for uterus A61B10/0045 takes precedence
• CPC Class Codes: A61B 10/04 Endoscopic instruments
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/42 Gynaecological or obstetrical instruments or methods ligaturing clamps or clips for the umbilical cord A61B17/122; curettage A61B17/320708; dilators A61M29/00
• CPC Class Codes: A61B 2010/0208 Biopsy devices with actuators, e.g. with triggered spring mechanisms
• CPC Class Codes: A61B 2010/0225 for taking multiple samples
• CPC Class Codes: A61B 2017/00389 Button or wheel for performing multiple functions, e.g. rotation of shaft and end effector
• CPC Class Codes: A61B 2017/00685 Archimedes screw
• CPC Class Codes: A61B 2017/320028 with reciprocating movements
• CPC Class Codes: A61B 2017/32004 having a laterally movable cutting member at its most distal end which remains within the contours of said end
• CPC Class Codes: A61B 2017/320064 with tissue or sample retaining means
• CPC Class Codes: A61B 2017/4216 Operations on uterus, e.g. endometrium
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 90/30 Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
• CPC Class Codes: A61M 1/7411 by changing the size of a vent in combination with changing the cross-section of the line A61M1/7413

Abstract

A tissue removal device includes an outer tubular member coupled to a housing and a having a tissue resection window, an inner tubular member slidably disposed within the outer tubular member, a tissue trap having a sealed interior in fluid communication with a vacuum chamber, an open proximal end of the inner tubular member being disposed within the tissue trap interior, and an actuator moveably coupled to the housing and operatively connected to a movable piston in the vacuum chamber, such that movement of the actuator relative to the housing generates a vacuum in the tissue trap.

Claims

1. A tissue removal device, comprising:

a housing;

an outer tubular member coupled to the housing and having a distal portion including a tissue resection window;

an inner tubular member slidably disposed within the outer tubular member and defining an inner lumen extending from an open distal end to an open proximal end, the open distal end comprising a cutting edge to sever tissue extending through the tissue resection window;

a vacuum generation chamber disposed in the housing including a movable piston disposed in the vacuum generation chamber;

a tissue trap disposed in or coupled to the housing, the tissue trap defining a sealed interior in fluid communication with the vacuum generation chamber via a one-way valve, so that air may be withdrawn from the tissue trap interior into the vacuum generation chamber by movement of the piston in a first direction, while air is prevented from entering the tissue trap interior from the vacuum generation chamber due to movement of the piston in a second direction opposite the first direction, wherein the open proximal end of the inner tubular member is disposed within the tissue trap interior; and

a manual actuator moveably coupled to the housing and operatively connected to the piston, such that movement of the actuator relative to the housing causes movement of the piston within the vacuum generation chamber.

2. The device of claim 1, wherein the actuator is coupled to the housing by a pinned connection, such that rotation of the actuator about the pin moves the piston within the vacuum generation chamber.

3. The device of claim 1, wherein the actuator may be selectively operatively coupled to the inner tubular member such that movement of the actuator relative to the housing causes movement of the inner tubular member relative to the outer tubular member.

4. The device of claim 3, wherein the actuator is selectively operatively coupled to the inner tubular member by a slider having a first position relative to the housing in which the actuator is not operatively coupled to the inner tubular member, and a second position relative to the housing in which the actuator mechanically engages the inner tubular member such that movement of the actuator relative to the housing causes the open distal end of the inner tubular member to move distally across the tissue resection window as the actuator is moved relative to the housing.

5. The device of claim 4, further comprising a spring configured to restore the inner tubular member to a proximally withdrawn position following movement of the inner tubular member caused by the actuator.

6. The device of claim 1, wherein the actuator comprises an actuation member that slides axially relative to the housing, and wherein sliding the actuator along the housing moves the piston within the vacuum generation chamber.

7. The device of claim 6, wherein the actuation member is configured as a ring positioned around tubular portion of the housing.

8. The device of claim 1, further comprising a seal disposed within the tissue trap interior and configured for engaging and sealing the open proximal end of the inner tubular member when the inner tubular member is in a proximally withdrawn position relative to the outer tubular member.

9. The device of claim 1, wherein the distal portion of the outer tubular member is configured for insertion through a working channel of an endoscopic instrument for positioning the tissue resection window in an interior region of a patient'"'"'s body.

10. The device of claim 1, further comprising a spring configured to restore the actuator to a non-actuated position following movement of the actuator.

11. A tissue removal device, comprising:

a housing;

an outer tubular member coupled to the housing and having a distal portion including a tissue resection window;

an inner tubular member slidably disposed within the outer tubular member and defining an inner lumen extending from an open distal end to an open proximal end, the open distal end comprising a cutting edge to sever tissue extending through the tissue resection window;

a vacuum generation chamber disposed in the housing including a movable piston disposed in the vacuum generation chamber;

a tissue trap disposed in or coupled to the housing, the tissue trap defining a sealed interior in fluid communication with the vacuum generation chamber via a one-way valve, so that air may be withdrawn from the tissue trap interior into the vacuum generation chamber by movement of the piston in a first direction, while air is prevented from entering the tissue trap interior from the vacuum generation chamber due to movement of the piston in a second direction opposite the first direction, wherein the open proximal end of the inner tubular member is disposed within the tissue trap interior;

an actuator moveably coupled to the housing by a pinned connection and operatively connected to the piston, such that rotation of the actuator about the pin moves the piston within the vacuum generation chamber; and

a first spring configured to restore the actuator to a non-actuated position following manual rotation of the actuator relative to the housing.

12. The device of claim 11, wherein the actuator may be selectively operatively coupled to the inner tubular member such that movement of the actuator relative to the housing causes movement of the inner tubular member relative to the outer tubular member

13. The device of claim 12, wherein the actuator is selectively operatively coupled to the inner tubular member by a slider having a first position relative to the housing in which the actuator is not operatively coupled to the inner tubular member, and a second position relative to the housing in which the actuator mechanically engages the inner tubular member to cause the open distal end of the inner tubular member to move distally across the tissue resection window as the actuator is rotated relative to the housing.

14. The device of claim 12, further comprising a second spring configured to restore the inner tubular member to a proximally withdrawn position following movement of the inner tubular member caused by the actuator.

15. The device of claim 11, further comprising a seal disposed within the tissue trap interior and configured for engaging and sealing the open proximal end of the inner tubular member when the inner tubular member is in a proximally withdrawn position relative to the outer tubular member.

16. The device of claim 11, wherein the distal portion of the outer tubular member is configured for insertion through a working channel of an endoscopic instrument for positioning the tissue resection window in an interior region of a patient'"'"'s body.

17-30. -30. (canceled)

31. A tissue removal system, comprising:

a tissue cutting device comprising an outer tubular member having a resection window and an inner tubular member disposed within the outer tubular member and movable across the resection window for cutting tissue extending therethrough;

a motor operatively coupled to the inner tubular member for moving the inner tubular member across the resection window;

a user-operable switch operatively coupled to the motor for activating and deactivating the motor; and

a vacuum source fluidly coupled to an open proximal end of the inner tubular member for continuously applying suction thereto, wherein the tissue cutting device further comprises a mechanical arrangement for preventing suction from being applied through the resection window if the inner member is stationary.