Calculus crushing apparatus and medical procedure using endoscope

• US 20080033467A1
• Filed: 06/08/2006
• Published: 02/07/2008
• Est. Priority Date: 06/08/2006
• Status: Active Grant

• Current Assignee: Olympus Corporation, Terumo Kabushiki Kaisha
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation), Terumo Kabushiki Kaisha
• Inventors: Kinoshita, Yasushi, Kobayashi, Junichi, Nishiie, Takehiro, Miyamoto, Satoshi
• Granted Patent: US 8,092,470 B2
• Time in Patent Office: Days
• US Class Current: 606/180
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2017/00287 Bags for minimally invasive surgery
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/320064 with tissue or sample retaining means
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• CPC Class Codes: A61B 2017/320775 Morcellators, impeller or propeller like means

Abstract

An apparatus includes a crushing part which rotates and crushes the calculus, wherein a radius of rotation of the crushing part with respect to a rotation axis thereof increases or decreases in accordance with a rotation speed of the crushing part.

Claims

1. An apparatus for crushing a calculus, comprising:

a crushing part which rotates and crushes the calculus, wherein a radius of rotation of the crushing part with respect to a rotation axis thereof increases or decreases in accordance with a rotation speed of the crushing part.

6. An apparatus in accordance with any one of claims 1, 2, 3, and 5, further comprising:

a sheath for containing the crushing part in a manner such that the crushing part can protrude from a head of the sheath in accordance with the rotation of the crushing part.

7. An apparatus in accordance with any one of claims 1 to 5, further comprising:

a holding part for surrounding the crushing part and supporting the calculus with respect to the crushing part.

9. An apparatus in accordance with claim 7, wherein the crushing part has a basket shape.

10. An apparatus in accordance with claim 7, further comprising:

a surrounding portion with which the holding part is covered.

11. An apparatus in accordance with claim 10, wherein the surrounding portion has a net shape.

14. An apparatus in accordance with any one of claims 1 to 5, wherein the crushing part has an uneven pattern.

15. An apparatus in accordance with any one of claims 1 and 2, wherein the crushing part is made of metal.

16. An apparatus in accordance with claim 15, wherein the crushing part also includes resin.

2. An apparatus for crushing a calculus, comprising:

a crushing part arranged along a central axis, which has a loop shape and rotates around the central axis so as to crush the calculus, wherein a diameter of the loop shape increases or decreases in accordance with a rotation speed of the crushing part.

8. An apparatus in accordance with any one of claims 2 to 5, wherein a radius of rotation of the crushing part is perpendicular to the central axis.

3. An apparatus for crushing a calculus, comprising:

a crushing part which is formed by combining flexible shaft members and is rotatable around a central axis of the shaft members, wherein head portions of the shaft members freely contact and are away from the central axis in accordance with a rotation speed of the crushing part, and are formed to bend in outward radial direction.

4. An apparatus for crushing a calculus, comprising:

a crushing part having;

a base portion which is arranged along a central axis and rotates around the central axis; and

cutting pieces, each having one end connected to a head portion of the base portion, and the other end extending toward a base end side of the base portion in a manner such that the cutting piece and the base portion form an acute angle, wherein

the acute angle between the base portion and each cutting piece varies in accordance with a rotation speed of the base portion.

12. An apparatus in accordance with claim 4, wherein the one end of each cutting piece is connected to the base portion in a manner such that the shape of the cutting piece is elastically deformable around the one end.

13. An apparatus in accordance with claim 4, wherein the one end of each cutting piece is connected to the base portion in a freely rotatable manner,

5. An apparatus for crushing a calculus, comprising:

a crushing part extending like a shaft and having a head portion which has an eccentric axis away from a central axis of the shaft and rotates around the central axis, wherein an angle between the eccentric axis and the central axis increases or decreases in accordance with a rotation speed of the crushing part.

17. A medical procedure using an endoscope, comprising the steps of:

inserting a sheath from a duodenal papilla into a bile or pancreatic duct, wherein the sheath contains a crushing part which rotates so as to cut a calculus in the bile or pancreatic duct, and in accordance with progress in the cutting of the calculus, the crushing part proceeds while increasing a radius of the cutting;

inserting a head of the sheath up to a position where the calculus can be held in the bile or pancreatic duct;

holding the calculus using a holding part which surrounds the calculus and supports the calculus with respect to the crushing part; and

crushing the calculus using the crushing part.

18. A medical procedure in accordance with claim 17, further comprising the step of:

holding the calculus using a surrounding portion with which the holding part is covered.

19. A medical procedure in accordance with claim 18, further comprising the step of:

removing the calculus held by the surrounding portion from the bile or pancreatic duct.

20. A medical procedure in accordance with claim 17, further comprising the step of:

collecting the calculus using a collecting device.