Device for removing solid objects from body canals, cavities and organs including an invertable basket

• US 6,264,663 B1
• Filed: 01/26/1998
• Issued: 07/24/2001
• Est. Priority Date: 10/06/1995
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated
• Original Assignee: Metamorphic Surgical Devices, LLC
• Inventors: Cano, Gerald G.
• Primary Examiner(s): Yu, Mickey
• Assistant Examiner(s): Koo, Benjamin K.
• Application Number:
  US09/013,178
• Time in Patent Office: 1,275 Days
• Field of Search: 606/110, 606/113, 606/114, 606/127
• US Class Current: 606/114
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 59/00 Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/50 Instruments, other than pincettes or toothpicks, for removing foreign bodies from the human body locating otherwise A61B5/06; locating by radiation A61B6/00; removing calculi A61B17/22; from the eyes A61F9/00709
• CPC Class Codes: A61B 2017/00287 Bags for minimally invasive surgery
• CPC Class Codes: A61B 2090/376 using X-rays, e.g. fluoroscopy
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting

Abstract

The present invention is directed to a surgical instrument used in minimally invasive procedures performed under either direct, endoscopic, fluoroscopic, or other visualization. The surgical instrument includes a frame which can be retracted into and extended from a sheath to form a loop and a sack having a mouth that is attached to the loop. The sack is used to encircle and capture foreign objects in body canals, cavities or organs. The wire frame is formed of a shape-memory-effect alloy wire in a super elastic state and previously trained to form the loop, the loop forming when the said wire frame is extended beyond the sheath. An invertor is connected to a closed end of the sack for urging the closed end of the sack toward the mouth of the sack.

Claims

1. An instrument for manipulating an object in a body canal, cavity or organ, the instrument comprising:

a first linkage having a proximal end and a distal end;

a sheath having the first linkage slidably received in a bore thereof;

a frame having a proximal end attached to the distal end of the first linkage, a distal end extendible from and retractable into the sheath by the first linkage and formed of a shape-memory-effect material trained to form at least a partial loop when extended beyond the sheath, and a pair of control arms that are positioned in the bore of the sheath when the frame is retracted into the sheath and which diverge from the bore to the at least partial loop when the distal end of the frame is extended beyond the sheath, the at least partial loop formed continuous between the pair of control arms;

a sack having a mouth attached to the at least partial loop and a closed end opposite the mouth, the mouth of the sack is opened and closed when the pair of control arms are extended from and retracted into the sheath; and

a second linkage connected to the closed end of the sack and which extends therefrom through the mouth of the sack to an exterior thereof when the sack is opened for urging the closed end of the sack toward the mouth of the sack.

2. The instrument as set forth in claim 1, wherein the second linkage is utilized to urge the closed end of the sack toward the mouth of the sack when the mouth is open.

3. The instrument as set forth in claim 1, wherein the second linkage includes a filament extending through the mouth of the sack.

4. The instrument as set forth in claim 1, wherein:

the second linkage extends to the closed end of the sack through the bore of the sheath; and

pulling the end of the second linkage opposite the closed end of the sack causes the second linkage to pull the closed end of the sack toward the mouth thereof.

5. The instrument as set forth in claim 1, wherein:

the handle is a syringe-type handle;

the actuator includes a plunger slidably received in a cylinder;

the proximal end of the first linkage is attached to the plunger; and

the sheath is attached to the cylinder.

6. The instrument as set forth in claim 1, wherein the at least partial loop defines a plane that is substantially normal to the bore of the sheath.

7. The instrument as set forth in claim 1, wherein the frame is further comprised of a first half frame and a second half frame joined at a junction that is attached to the first linkage.

8. The instrument as set forth in claim 7, wherein the control arms cause the mouth of the sack to open when the distal end of the first linkage is extended from the sheath.

9. The instrument as set forth in claim 1, wherein the sack adjacent the mouth thereof includes a cut-out portion that prevents bunching of the sack when the sack is retracted into the bore.

10. The instrument as set forth in claim 1, wherein the sack is formed from mesh-like material that can capture and retain the object while allowing fluids to pass therethrough.

11. An instrument for removing an object from a body canal, cavity or organ, the instrument comprising:

a sheath having a central bore therethrough;

a frame slidably received in the bore of the sheath and having an end extendable from and retractable into the bore, the end of the frame formed from a shape-memory-effect material trained to form at least a partial loop when extended from the sheath, the at least partial loop extending between a pair of control arms that diverge from the end of the bore to the at least partial loop when the end of the frame is extended from the bore;

a sack having a mouth that is attached to the at least partial loop and a closed end opposite the mouth; and

a linkage connected to the closed end of the sack and which extends therefrom through the mouth of the sack to an exterior thereof when the sack is opened for urging the closed end of the sack toward the mouth of the sack.

12. The instrument as set forth in claim 11, wherein:

the at least partial loop is receivable in the bore when the end of the frame is retracted into the bore;

the mouth of the sack is opened when the end of the frame is extended from the bore; and

the mouth of the sack is closed when the end of the frame is retracted into the bore.

13. The instrument as set forth in claim 12, wherein in the absence of the object therein the sack is retractable into the bore.

14. The instrument as set forth in claim 11, wherein the linkage includes a filament extending through the mouth of the sack.

15. The instrument as set forth in claim 11, wherein the linkage is connected to the sack at a closed end thereof opposite the mouth.

16. A surgical instrument comprising:

a frame that is adjustable between a closed state and an open state;

a sack having attached to the frame a mouth that is closeable and openable with adjustment of the frame between the closed state and the open state; and

a linkage connected to a closed end of the sack and which extends therefrom through the mouth of the sack to an exterior thereof when the sack is opened for urging the closed end of the sack through the mouth thereof attached to the frame.

17. The surgical instrument as set forth in claim 16, wherein the linkage urges the closed end of the sack through the mouth when the frame is in the open state.

18. The surgical instrument as set forth in claim 16, wherein the linkage includes a filament that extends through the mouth and is connected to the sack at the closed end thereof opposite the mouth.

19. The surgical instrument as set forth in claim 16, wherein the linkage is positioned adjacent an inside surface of the sack.