Apparatus for actuating a variety of interchangeable surgical instruments for hollow organ anastomosis

• US 6,269,997 B1
• Filed: 08/17/1999
• Issued: 08/07/2001
• Est. Priority Date: 08/17/1998
• Status: Expired due to Fees

• Current Assignee: Deutsches Zentrum Fã¼R Luft- Und Raumfahrt E.V.
• Original Assignee: Deutsches Zentrum Fã¼R Luft- Und Raumfahrt E.V.
• Inventors: Hagn, Ulrich, Balázs, Matthias
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US09/375,516
• Time in Patent Office: 721 Days
• Field of Search: 227/175.1, 227/19, 227/176.1, 227/179.1
• US Class Current: 227/175.1
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/2922 toggle linkages
• CPC Class Codes: A61B 2017/2931 with releasable head

Abstract

For actuating a variety of interchangeable surgical instruments, more particularly for hollow organ anastomosis, an apparatus comprises at the proximal end of a shank part a handle part (2) secured releasably and correctly positioned thereto. A pivotable toggle mechanism is fitted to the handle part, the pivotable toggle mechanism cooperating releasably with the proximal end of a flexible, force-transmitting reciprocating part guidingly accommodated in the shank part. The proximal end of the reciprocating part is connected to an adjusting mechanism in the handle part. At the distal end of the reciprocating part a connector for connecting a surgical instrument is provided. At the distal end of the shank part a connector is provided for connecting a housing of the surgical instrument. Fitted to the distal end of the flexible reciprocating part is a pusher transmitting an axial compression force to the body of the surgical instrument.

Claims

1. An apparatus for actuating a variety of interchangeable surgical instruments, more particularly for hollow organ anastomosis wherein

at the proximal end of a shank part (1) a handle part (2) is secured releasably and correctly positioned,

a pivotable toggle mechanism (21, 22) is fitted to said handle part (2), said pivotable toggle mechanism (21, 22) cooperating releasably with the proximal end of a flexible, force-transmitting reciprocating part (32,45) guidingly accommodated in said shank part (1), the proximal end of said reciprocating part (32, 45) being connected to an adjusting mechanism (4) in said handle part (2),

at the distal end of said reciprocating part (32, 45) a connector (46) for connecting a surgical instrument is provided,

at the distal end of said shank part (1) a connector (14) is provided for connecting a housing of said surgical instrument,

fitted to the distal end of said flexible reciprocating part (32) is a pusher (34) transmitting an axial compression force to the body of said surgical instrument,

said force-transmitting reciprocating part comprises first and second components, said first component being coupled to said adjusting mechanism for operating said adjusting mechanism and said second component being coupled to the body of the surgical instrument and being operable for transmitting the axial compression force to the body of the surgical instrument,

said first component and second component are movable independently of one another,

said toggle mechanism comprises a lever (21) pivotably mounted between mounting pads (28) and a leg (22) movably connected to said lever (21), said leg (22) cooperating releasably for transmitting an axial force produced by means of said lever (21) to the proximal end of said flexible reciprocating part (32), and

for releasably mounting said leg (22) in said flexible reciprocating part (32), an intersecting groove (315, 316) comprising a transverse and longitudinal groove is provided in said connector (31) applied to the proximal end of said flexible reciprocating part (32), correspondingly configured tee-shaped windows (261 or 1111) being assigned to said intersecting groove (315, 316) in said handle housing (26) and in a connector (11) provided at the proximal end of said shank part (1).

2. The apparatus as set forth in claim 1 wherein to safeguard against accidental actuation of said toggle mechanism a lock (211) is integrated in said lever (21) thereof.

3. The apparatus as set forth in claim 1 wherein for securing said shank part (1) to said handle part (2) a fastener nut (13) is accommodated freely rotatable on said connector (11) fixedly connected to the proximal end of said shank part (1) and said connector (11) comprising a stop (111) common to both said fastener nut (13) and to said handle housing (26).

4. The apparatus as set forth in claim 1 wherein an indicator (222) for indicating the position of said adjusting mechanism (4) in the free adjustment range, an-indicator (251) for checking that said adjusting mechanism (4) is arrested and a scale (253) for indicating the adjustment width of a gap are provided on said tubular handle housing (26).

5. The apparatus as set forth in claim 1 wherein the middle part (41) of said adjusting mechanism (4) is guided in said shank part (1) locked in place rotatively.

6. The apparatus as set forth in claim 5 wherein said middle part (41) is guided locking in place rotatively by a pin (413) protruding therefrom in a longitudinal groove (115) of said shank part (1) and is coaxially guided in said handle housing (26) by a circular-cylindrical raised face (412).

7. The apparatus as set forth in claim 1 wherein for transmitting an axially oriented force along said shank tube (12;

12′

) said connector (31) coaxially guided in said handle part (2) is fixedly connected to said flexible reciprocating part (32) by two stiff bodies embedded therein (32).

8. The apparatus as set forth in claim 7 wherein said stiff bodies are metal bodies (33).

9. The apparatus as set forth in claim 1 wherein said first component of said force-transmitting reciprocal part comprises a core (45) connected to said adjusting mechanism (4) and accommodated in a preferably centrally arranged working passage (312, 3223) of said flexible reciprocating part (32).

10. The apparatus as set forth in claim 1 wherein for limiting the travel of said axial shiftable reciprocating part (32) a stop (3191) is configured on said connector (31) as well as a stop (112) on said connector (111).

11. The apparatus as set forth in claim 1 wherein said flexible reciprocating part (32) comprises alternating recesses (321) and circular-cylindrical sections (322) for guiding in a straight or bent shank tube (12 or 12′

).

12. The apparatus as set forth in claim 1 wherein said first component of said force-transmitting reciprocal component comprises a core(45), and for shifting said core (45), said middle part (41) of said adjusting mechanism (4) is secured to the proximal end of said core, said adjusting mechanism (4) being shiftable by means of a spindle (42) rotatively movable in a limited range and axially guided in said handle part.

13. The apparatus as set forth in claim 1 wherein for transmitting an adjustment movement a handwheel (43) is provided as an operating control element in said adjusting mechanism (4) cooperating with said spindle (42).

14. The apparatus as set forth in claim 13 wherein for transmitting an operating control moment from said handwheel (43) to said spindle (42) a pin (436) engaging a groove (425) is provided.

15. The apparatus as set forth in claim 1 wherein said adjusting mechanism (4) for adjusting said required gap width is arrested by an inner serration (431) of said handwheel (43) being springingly maintained mated with the outer serration (471) of a latch (47) connected to said middle part (41).

16. The apparatus as set forth in claim 1 wherein said connector for connecting a surgical instrument to the distal end of said shank part (1) is configured as a push button fastener (14) with push buttons (51) provided on flexible tabs.

17. The apparatus as set forth in claim 1 wherein for deflecting a flexible shank tube (12″

) tractive driver means (191″

, 192″

) are secured to the proximal end thereof diametrally opposed, the opposite ends of which are secured to connectors (181″

, 182″

) guided in a rotary hollow ring (15″

) so that rotation of said hollow ring (15″

) shifts said connectors (181″

, 182″

) by the same amount in the opposite direction.

18. The apparatus as set forth in claim 17 wherein guide links (151″

) having a constant or variable ramp are configured in said hollow ring (15″

), protruding noses (17″

) being received by semi-circular connectors (181″

, 182″

) in said guide links.