Devices and methods for obtaining adenomyosis and other biopsy samples

Patent metadata

Field	Value
Publication number	US-11805998-B2
Application number	US-202016853016-A
Country	US
Kind code	B2
Filing date	Apr 20, 2020
Priority date	Apr 20, 2020
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

A tissue biopsy device includes an input configured to receive a rotational input and to rotate in a first direction in response thereto, an outer tube, and an inner cutting member extending through the outer tube. A mechanism couples the input with at least one of the inner tube or the outer tube and/or one of the inner tube or the outer tube is coupled to the input such that rotation of the input in the first direction drives rotation of the one of the outer tube or the inner cutting member in the first direction and drives rotation of the other of the outer tube or the inner cutting member in a second, opposite direction.

First claim

What is claimed is:

1. A tissue biopsy device, comprising:
an input drive shaft configured to receive a rotational input, where, in response to the rotational input, the input drive shaft is configured to rotate in a first direction and translate longitudinally;
an outer tube;
an inner cutting member extending through the outer tube; and
a gear assembly coupling one of the outer tube or the inner cutting member with the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the one of the outer tube or the inner cutting member in the first direction, and coupling the other of the outer tube or the inner cutting member with the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the other of the outer tube or the inner cutting member in a second, opposite direction,
wherein longitudinal translation of the input drive shaft drives longitudinal translation of at least one of the outer tube or the inner cutting member relative to another of the outer tube or the inner cutting member.

2. The tissue biopsy device according to claim 1 , wherein the inner cutting member includes a proximal support and a spiral-shaped distal portion extending distally from the proximal support.

3. The tissue biopsy device according to claim 1 , further comprising a handle housing supporting an actuator, the actuator configured to connect to the input drive shaft and to provide the rotational input to the input drive shaft.

4. The tissue biopsy device according to claim 3 , wherein the actuator includes a motor configured to provide the rotational input.

5. The tissue biopsy device according to claim 3 , wherein the actuator includes a manual actuator coupled to the drive assembly such that, in response to actuation of the manual actuator, the actuator provides the rotational input.

6. The tissue biopsy device according to claim 1 , wherein the gear assembly includes a sun gear, a plurality of planetary gears disposed about the sun gear in meshed engagement with the sun gear, and a ring gear disposed about the plurality of planetary gears in meshed engagement with the plurality of planetary gears.

7. The tissue biopsy device according to claim 6 , wherein the inner cutting member is coupled to the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the inner cutting member in the first direction, wherein the sun gear is engaged with the inner cutting member, and wherein the outer tube is coupled to the ring gear such that, upon rotation of the inner cutting member in the first direction, the outer tube is rotated in the second, opposite direction.

8. The tissue biopsy device according to claim 6 , wherein the outer tube is coupled to the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the outer tube in the first direction, wherein the ring gear is engaged with the outer tube, and wherein the sun gear is engaged with the inner cutting member such that, upon rotation of the outer tube in the first direction, the inner cutting member is rotated in the second, opposite direction.

9. The tissue biopsy device according to claim 1 , wherein the gear assembly includes a first gear set and a second gear set, the first gear set directly coupled with the input drive shaft and the second gear set coupled with the first gear set, wherein the other of the outer tube or the inner cutting member is coupled with the second gear set, and wherein the first and second gear sets are configured to cooperate to reverse the first direction of rotation such that the other of the outer tube or the inner cutting member is rotated in the second, opposite direction.

10. The tissue biopsy device according to claim 1 , wherein the input drive shaft includes a helical groove along at least a portion of a length thereof, and wherein a drive coupler is at least partially engaged within the helical groove such that the input drive shaft is translated longitudinally in response to rotation of the input.

11. A method of obtaining a tissue biopsy, the method comprising:
driving an input drive shaft of a tissue biopsy device having an outer tube and an inner cutting member extending through the outer tube in a first direction to rotate the inner cutting member and outer tube in opposite directions to engage tissue with the inner cutting member and cut the engaged tissue with the outer tube to obtain a cylindrical-shaped tissue sample; wherein driving the input drive shaft includes a gear assembly coupling one of the outer tube or the inner cutting member with the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the one of the outer tube or the inner cutting member in the first direction, and coupling the other of the outer tube or the inner cutting member with the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the other of the outer tube or the inner cutting member in a second, opposite direction,
wherein rotation of the input drive shaft longitudinally translates at least one of the inner cutting member or the outer tube to capture the cylindrical-shaped tissue sample.

12. The method according to claim 11 , wherein the translation is simultaneous with the rotation.

13. The method according to claim 11 , wherein the inner cutting member includes a spiral-shaped distal end portion and wherein driving the input drive shaft in the first direction to rotate the inner cutting member includes screwing the spiral-shaped distal end portion into tissue to engage tissue.

14. A tissue biopsy device, comprising:
an input drive shaft configured to receive a rotational input, where, in response to the rotational input, the input drive shaft is configured to rotate in a first direction and translate longitudinally;
an outer tube;
an inner cutting member extending through the outer tube;
an actuator configured to connect to the input drive shaft, the actuator providing rotational input to the input drive shaft upon actuation thereof; and
a gear assembly coupling one of the outer tube or the inner cutting member with the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the one of the outer tube or the inner cutting member in the first direction, and coupling the other of the outer tube or the inner cutting member with the input drive shaft such that rotation of the input drive shaft in the first direction drives rotation of the other of the outer tube or the inner cutting member in a second, opposite direction,
wherein longitudinal translation of the input drive shaft drives longitudinal translation of at least one of the outer tube or the inner cutting member relative to another of the outer tube or the inner cutting member.

Assignees

• Covidien Lp

Inventors

• Begg Nikolai D
• Pickering Chad A
• Leibowitz Dalia P
• Wood Timothy J
• Bolognese Andrew P

Classifications

• A61B10/0291 Primary

  for uterus (A61B10/0045 takes precedence) · CPC title

• A61B10/04

  Endoscopic instruments, e.g. catheter-type instruments · CPC title