Flexible biopsy jaw assembly

• US 6,309,404 B1
• Filed: 10/19/1999
• Issued: 10/30/2001
• Est. Priority Date: 10/19/1999
• Status: Expired due to Term

• Current Assignee: Jacek Krzyzanowski
• Original Assignee: Jacek Krzyzanowski
• Inventors: Krzyzanowski, Jacek
• Primary Examiner(s): Schaetzle, Kennedy
• Assistant Examiner(s): DROESCH, KRISTEN L
• Application Number:
  US09/420,773
• Time in Patent Office: 742 Days
• Field of Search: 606/167, 606/170, 606/171, 606/205, 606/206, 606/207, 606/209, 600/562, 600/564, 600/566, 600/567
• US Class Current: 606/208
• CPC Class Codes: A61B 10/06 Biopsy forceps , e.g. with cup-shaped jaws
• CPC Class Codes: A61B 2010/0225 for taking multiple samples
• CPC Class Codes: A61B 2017/2939 Details of linkages or pivot points
• CPC Class Codes: A61B 2017/294 Connection of actuating rod to jaw, e.g. releasable

Abstract

A biopsy forceps device encompassing integrally designed parts for opening and closing the cutting jaws of the device and reducing the number of individual parts in the entire device and having features which specifically reduce the number of parts involved in the pivot mechanism, and having features which eliminate projections which may damage equipment used in conjunction with the device, and having features which specifically permit the device to obtain and store more than one tissue sample.

Claims

1. A flexible biopsy jaw assembly for a biopsy forceps device which may be inserted through an endoscope for the removal of body tissue from a body cavity, comprising:

(a) a flexible tubular member;

(b) a single flat support having a single aperture and a proximal end and a distal end wherein said proximal end is mounted directly to said flexible tubular member and said distal end is pointed;

(c) an integrally connected jaw assembly having a cutting plane and mounted pivotally about a common axis within said single aperture for rotation of said integrally connected jaw assembly within said cutting plane of said integrally connected assembly;

(d) a pair of actuating wires attached to said integrally connected jaw assembly and slidable relative to said flexible tubular member and said single flat support for moving said integrally connected jaw assembly from a first closed position to a second open position when activated.

2. A flexible biopsy jaw assembly as claimed in claim 1 wherein said enclosing means is further defined as a closed coil spring having a defined cavity with a rim wherein said flat member is inserted into said defined cavity and is attached to said rim.

3. A flexible biopsy jaw assembly as claimed in claim 2 wherein said integrally connected jaw assembly is defined as a lower jaw having a single tapered pivot hole and a upper jaw having a pin wherein said pin of said upper jaw passes through said aperture of said single support member and is secured to said tapered pivot hole of said lower jaw thereby hiding said pin within said tapered pivot hole.

4. A flexible biopsy jaw assembly as claimed in claim 3 wherein the securement of said pin in said tapered pivot hole is a lateral stabilizer for said upper and lower jaws.

5. A flexible biopsy jaw assembly as claimed in claim 3 wherein said lower and upper jaws each have a tapered aperture whereby one diameter of said aperture is greater in size than the second diameter of the aperture.

6. A flexible biopsy jaw assembly as claimed in claim 5 wherein said actuating wires further comprise a distal end that passes through said cavity of said closed coil spring, and a proximal end having a lug whereby said lug passes through one side of said tapered aperture and rests against the opposing side of said tapered aperature hiding said lug within said tapered aperature.

7. A flexible biopsy jaw assembly for a biopsy forceps device which may be inserted through an endoscope for the removal of multiple samples of body tissue from a body cavity, comprising:

(a) an enclosing means;

(b) a flat member having a slot and a proximal end and a distal end wherein said proximal end is attached to said enclosing means and said distal end is pointed;

(c) an integrally connected jaw assembly pivotally and slidably mounted about said flat member at said slot allowing said integrally connected jaw assembly to move along said flat member and store multiple samples of body tissue;

(d) a pair of actuating wires attached to said integrally connected jaw assembly and slidable relative said enclosing means and said flat member for moving said integrally connected jaw assembly from a first closed position to a second open position when activated.

8. A flexible biopsy jaw assembly as claimed in claim 7 wherein said flexible tubular member is further defined a closed coil spring having a defined cavity with a rim wherein said flat member is inserted into said defined cavity and is attached to said rim.

9. A flexible biopsy jaw assembly as claimed in claim 7 wherein said slot is defined as a graduated slot, and further comprising a flexion means associating with said integrally connected jaw assembly, said flexion means activating when said integrally connected jaw assembly moves between said proximal end and said distal end of said flat member.

10. A flexible biopsy jaw assembly as claimed in claim 9 wherein said integrally connected jaw assembly is defined as a lower jaw having a tapered pivot hole and a serrated edge, and a upper jaw having a pin and a serrated edge, wherein said pin of said upper jaw passes through said slot of said flat member and is secured to said tapered pivot hole of said lower jaw and said serrated edge of said lower jaw meshes with said serrated edge of said upper jaw.

11. A flexible biopsy jaw assembly as claimed in claim 10 wherein said lower and upper jaws each have a tapered aperture whereby one diameter of said aperture is greater in size than the second diameter of said aperture.

12. A flexible biopsy jaw assembly as claimed in claim 11 wherein said actuating wires further comprise a distal end that passes through said cavity of said closed coil spring, and a proximal end having a lug whereby said lug passes through one side of said tapered aperture and rests against the opposing side of said aperture.

13. A flexible biopsy jaw assembly as claimed in claim 12 wherein said actuating wires are shaped to lie adjacent to said flat member at said proximal end of said actuating wires.

14. A flexible biopsy jaw assembly for a biopsy forceps device which may be inserted through an endoscope for the removal of body tissue from a body cavity, comprising:

(a) a closed coil spring having a defined cavity with a rim;

(b) a flat member having a pointed distal end, a proximal end and a slot wherein said proximal end is welded to said rim of said flat member;

(c) an integrally connected jaw assembly pivotally and slidably mounted about said flat member at said slot;

(d) actuating wires attached to said integrally connected jaw assembly and slidable relative said closed coil spring for moving said integrally connected jaw assembly from a first closed position to a second open position when activated.

15. A flexible biopsy jaw assembly as claimed in claim 14 wherein said integrally connected jaw assembly is defined as a lower jaw having a tapered pivot hole and a serrated edge, and a upper jaw having a pin and a serrated edge, wherein said pin of said upper jaw passes through said slot means of said flat member and is secured to said tapered pivot hole of said lower jaw and said serrated edge of said lower jaw meshes with said serrated edge of said upper jaw.

16. A flexible biopsy jaw assembly as claimed in claim 15 wherein the securement of said pin in said tapered pivot hole is a lateral stabilizer for said upper and lower jaws.

17. A flexible biopsy jaw assembly as claimed in claim 15 wherein said lower and upper jaws each have a tapered aperture whereby one diameter of said aperture is greater in size than the second diameter of said aperture.

18. A flexible biopsy jaw assembly as claimed in claim 17 wherein said actuating wires further comprise a distal end that passes through said cavity of said closed coil spring, and a proximal end having a lug whereby said lug passes through one side of said tapered aperture and rests against the opposing side of said aperture.

19. A flexible biopsy jaw assembly as claimed in claim 18 wherein said actuating wires are shaped to lie adjacent to said flat member at said proximal end of said actuating wires.

20. A flexible biospy jaw assembly for a biopsy forceps device which may be inserted through an endoscope for the removal of body tissue from a body cavity, comprising:

(a) a rigid tubular member;

(b) a single flat support having a single aperture and a proximal end and a distal end wherein said proximal end is mounted directly to said flexible tubular member and said distal end is pointed;

(c) an integrally connected jaw assembly having a cutting plane and mounted pivotally about a common axis within said single aperture for rotation of said integrally connected jaw assembly within said cutting plane of said integrally connected assembly;

(d) a pair of actuating wires attached to said integrally connected jaw assembly and slidable relative to said flexible tubular member and said single flat support for moving said integrally connected jaw assembly from a first closed position to a second open position when activated.

21. A flexible biopsy jaw assembly for a biopsy forceps device which may be inserted through an endoscope for the removal of body tissue from a body cavity, comprising:

(a) a flexible tubular member;

(b) a single flat support having a single aperture and a proximal end and a distal end wherein said proximal end is mounted directly to said flexible tubular member;

(c) an integrally connected jaw assembly having a cutting plane and mounted pivotally about a common axis within said single aperture for rotation of said integrally connected jaw assembly within said cutting plane of said integrally connected assembly;

(d) a pair of actuating wires attached to said integrally connected jaw assembly and slidable relative to said flexible tubular member and said single flat support for moving said integrally connected jaw assembly from a first closed position to a second open position when activated.