SUCTION EVACUATION DEVICE

• US 20160022289A1
• Filed: 07/28/2014
• Published: 01/28/2016
• Est. Priority Date: 07/28/2014
• Status: Active Grant

• Current Assignee: Well Lead Co., Ltd.
• Original Assignee: Shaw P. Wan
• Inventors: Wan, Shaw P.
• Granted Patent: US 10,828,051 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• 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 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22074 the instrument being only slidable in a channel, e.g. advancing optical fibre through a channel
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2017/3445 used as instrument channel for multiple instruments
• CPC Class Codes: A61B 2217/005 with suction drainage system

Abstract

A method for removing a stone from a patient comprising the steps of: providing a suction evacuation assembly which includes a sheath and one or more side arms; inserting and positioning a distal end of the sheath into a lumen or cavity of a patient'"'"'s body containing a stones; connecting a tube to one of the side arms and to a collection bottle; connecting another tube to the collection bottle and a negative pressure system; visualizing the stone or foreign body using a scope inserted through the assembly; activating the negative pressure system in order to remove the stone from the cavity if the diameter of the stone is narrower than an inside diameter of the sheath and the side arm, or performing a lithotripsy on the stone to create fragments with a decreased diameter which allow the passage through the assembly; and collecting the stone in the collection bottle.

Claims

1. A method for removing a stone, a stone fragment or a foreign body from a patient using a suction evacuation assembly comprising the steps of:

providing a suction evacuation assembly which includes a sheath and one or more side arms;

inserting an obturator into a proximal end of a sheath and securing said obturator to the proximal end of said sheath;

said sheath being comprised of a proximal sheath and a distal sheath, said proximal sheath having a proximal end and a distal end and said distal sheath having a proximal end and a distal end;

wherein the distal end of said proximal sheath is secured to the proximal end of said distal sheath and wherein said proximal sheath has one or more side arms emanating from the outer surface of said proximal sheath; and

wherein the sheath having a lumen which is the same diameter as a lumen of said one or more side arms;

inserting a distal end of said sheath into a lumen or cavity of a patient'"'"'s body containing one or more stones or foreign bodies;

positioning the distal end of said sheath in a position in close proximity to said stones or foreign bodies;

disengaging said obturator from the proximal end of said sheath and removing said obturator from said sheath;

securing a flexible cap to the proximal end of the sheath;

connecting one end of a primary tube to one of the side arms and connecting the other end of said primary tube to a collection bottle;

connecting one end of a secondary tube to said collection bottle and connecting the other end of said secondary tube to a negative pressure system;

inserting a scope into the sheath through the flexible cap and into said patient;

visualizing said stone or foreign body using said scope;

activating said negative pressure system in order to remove said stone or foreign body from said cavity if a diameter of said stone or foreign body is narrower than an inside diameter of said sheath and said side arm, or

performing a lithotripsy on said stone or said foreign body in order to create fragments with a decreased diameter which allow the passage of said fragments within the inside diameter of said sheath and said side arm; and

collecting the stone, foreign body and/or fragments in said collection bottle.

2. The method of claim 1 wherein said one or more side arms emanate from the outer surface of said proximal sheath at an angle of between 20°

and 80°

toward the proximal end of said sheath.

3. The method of claim 1 further comprising the step of:

introducing a guide wire into a lumen or cavity of a patient'"'"'s body containing one or more stones or foreign bodies prior to inserting said sheath into a lumen or cavity of a patient'"'"'s body in order to aid in the positioning the distal end of said sheath in a position in close proximity to said stones or foreign bodies.

4. The method of claim 1 further comprising the step of:

visualizing one or more stones and/or foreign objects which are too large to pass though the space between the scope and the inside surface of the sheath, but small enough to pass through the lumen of the sheath;

retracting the scope from the distal end of the sheath to a point which is just proximal to the location within the proximal sheath where said side arm emanates from said proximal sheath while visualizing the aspiration of said one or more stones and/or foreign objects up the sheath and into said side arm; and

collecting the stone, foreign body and/or fragments in said collection container.

5. The method of claim 1 further comprising the steps of:

providing a sheath that is comprised of a proximal sheath and a distal sheath, said proximal sheath having a proximal end and a distal end and said distal sheath having a proximal end and a distal end;

wherein the distal end of said proximal sheath is secured to the proximal end of said distal sheath and wherein said proximal sheath has a primary side arm emanating from the outer surface of said proximal sheath and a secondary side arm emanating from the outer surface of said proximal sheath;

said second side arm providing an additional access point for irrigation, a catheter, a guide wire, a foreign body basket, a back stop, or other instrument or device to be passed through the sheath anytime during the procedure to improve the efficacy of the procedure; and

said second side arm further comprising one or more sluices to allow the passage of any combination of the above mentioned instruments.

6. The method of claim 1 wherein said one or more side arms further comprises a pressure regulating mechanism which allows a person using the suction evacuation assembly to increase or decrease the negative pressure within the suction evacuation assembly.

7. The method of claim 1 wherein the scope has a diameter which is smaller than an inner diameter of the sheath of the suction evacuation assembly resulting in an open channel within the lumen of the sheath which permits the passage of stones, pieces of stones or other foreign objects through the lumen of the sheath and through said one or more side arms.

8. The method of claim 1 further comprising the steps of:

introducing a guide wire into a lumen or cavity of a patient'"'"'s body containing one or more stones or foreign bodies prior to inserting said sheath into a lumen or cavity of a patient'"'"'s body in order to aid in the positioning the distal end of said sheath in a position in close proximity to said stones or foreign bodies;

providing a secondary sheath secured to the outer surface of the sheath, now a primary sheath;

passing the guide wire through the secondary sheath while positioning the distal end of said primary sheath in a position in close proximity to said stones or foreign bodies.

9. The method of claim 8 wherein said secondary sheath may be used to guide additional irrigation, a catheter, a foreign body basket, a backstop, an instrument or device to the position in close proximity to said stones or foreign bodies simultaneously with the scope and/or irrigation, catheter, foreign body basket, backstop, instrument or device through the primary sheath.

10. The method of claim 9 wherein said secondary sheath has a proximal end which is located near the proximal end of the primary sheath and a distal end which extends beyond the distal end of the primary sheath in order to allow irrigation, a catheter, a foreign body basket, a backstop, an instrument or device to be passed beyond a stone, a stone fragment or other foreign body during a procedure to remove them.

11. The method of claim 1 wherein, the method could also be used for tissue ablation and morcellation

12. A device for removing a stone, a stone fragment or a foreign body from a patient comprising:

a suction evacuation assembly which includes a sheath and one or more side arms;

an obturator which is inserted into a proximal end of the sheath and which extends beyond the distal end of the sheath and releaseably secured to the proximal end of said sheath;

said sheath being comprised of a proximal sheath and a distal sheath, said proximal sheath having a proximal end and a distal end and said distal sheath having a proximal end and a distal end;

wherein the distal end of said proximal sheath is secured to the proximal end of said distal sheath;

a side arm emanating from the outer surface of said proximal sheath;

a accessory side arm emanating from the outer surface of said proximal sheath;

said sheath having a lumen which is the same diameter as a lumen of said side arm and as a lumen of said accessory side arm;

a flexible cap releaseably secured to the proximal end of the sheath;

a proximal end of a primary tube releaseably secured to said accessory side arm and a distal end of said primary tube releaseably secured to a collection container; and

a proximal end of a secondary tube releaseably secured to said collection container and a distal end of said secondary tube releaseably secured to a negative pressure system;

wherein said obturator is withdrawn from said sheath and a scope is inserted into the sheath through the flexible cap and into said patient in order to visualize said stone or foreign body using said scope;

the negative pressure system is activated in order to remove said stone or foreign body from said cavity if a diameter of said stone or foreign body is narrower than an inside diameter of said sheath and said side arm, or

lithotripsy is performed on said stone or said foreign body in order to create fragments with a decreased diameter which allow the passage of said fragments within the inside diameter of said sheath and said side arm; and

the stone, foreign body and/or fragments are collected in said collection container.

13. The device of claim 12 wherein said side arm and said accessory side arm each emanate from the outer sheath of said proximal sheath at an angle of between 20°

and 80°

toward the proximal end of said sheath.

14. The device of claim 12 further comprising:

a guide wire which is introduced into a lumen or cavity of a patient'"'"'s body containing one or more stones or foreign bodies prior to inserting said sheath into a lumen or cavity of a patient'"'"'s body in order to aid in the positioning the distal end of said sheath in a position in close proximity to said stones or foreign bodies.

15. The device of claim 12 wherein said side arm and said accessory side arm each further comprise a pressure regulating mechanism which allows a person using the suction evacuation assembly to increase or decrease the negative pressure within the suction evacuation assembly.

16. The device of claim 12 wherein the scope has a diameter which is smaller than an inner diameter of the sheath of the suction evacuation assembly resulting in an open channel within the lumen of the sheath which permits the passage of stones, pieces of stones or other foreign objects through the lumen of the sheath and through said side arm and/or accessory side arm.

17. The device of claim 12 wherein the suction evacuation assembly further comprising:

a secondary sheath secured to the outer surface of the sheath, now a primary sheath;

said secondary sheath allows the passage of a guide wire through the secondary sheath while positioning the distal end of said primary sheath in a position in close proximity to said stones or foreign bodies.

18. The device of claim 17 wherein said secondary sheath may be used to guide additional irrigation, a catheter, a foreign body basket, a backstop, an instrument or device to the position in close proximity to said stones or foreign bodies simultaneously with the scope and/or irrigation, catheter, foreign body basket, backstop, instrument or device through the primary sheath.

19. The device of claim 18 wherein said secondary sheath has a proximal end which is located near the proximal end of the primary sheath and a distal end which extends beyond the distal end of the primary sheath in order to allow irrigation, a catheter, a foreign body basket, a backstop, an instrument or device to be passed beyond a stone, a stone fragment or other foreign body during a procedure to remove them.

20. The device of claim 12 wherein the device is used for tissue ablation and morcellation.