Retractor instruments

• US 20070032704A1
• Filed: 08/01/2006
• Published: 02/08/2007
• Est. Priority Date: 08/02/2005
• Status: Abandoned Application

• Current Assignee: Marco Gandini
• Original Assignee: Marco Gandini
• Inventors: Gandini, Marco
• Application Number:
  US11/496,717
• Publication Number:
  US 20070032704A1
• Time in Patent Office: Days
• US Class Current: 600/219
• 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 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0281 Abdominal wall lifters
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 2017/2902 characterized by features of the actuating rod
• CPC Class Codes: A61B 2017/2904 curved, but rigid
• CPC Class Codes: A61B 2017/2908 Multiple segments connected by articulations
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft

Abstract

The present invention relates to a retraction instrument (1, 100) comprising an elongated tubular body (3, 103) to which are associated a rod (2, 102, 122) and at least one deployable/orientable formation (5, 105, 155) in the distal position with regard to the principal body (3, 103) and to the rod (2, 102, 122) where the formation (5, 105, 155) can move from a retracted position of alignment with the principal body (3, 103) towards at least one deployed position in which the formation (5, 105, 155) extends inclined with regard to the principal body (3, 103).

Claims

1. Retraction instrument (100) comprising:

a tubular body (103) elongated in the direction of its longitudinal axis (Z) presenting in the distal position a first skew surface (131) inclined with respect to said axis (Z);

at least one rod (102, 122); and

at least one orientable formation (105, 155) elongated in the direction of its longitudinal axis (Z1, Z2) in the distal position with regard to said body (103) and to said rod (102, 122) and each presenting at least one skew surface (106, 138, 159) inclined with respect to said axis (Z), where said formation (105, 155) can move from a retracted position of alignment with said axis (Z) towards at least one deployed position in which said formation (105, 155) is inclined with respect to said axis (Z), and where said at least one formation (105, 155) is coupled to said body (103) in such a way that the rotary movement in one direction of said body (103) produces a deployment movement of said at least one formation (105, 155) and movement in the opposite direction of said body (103) produces a recall movement of said at least one formation (105, 155), where said rotary movement involves the movement in sliding bearing interaction of at least two skew surfaces (131, 106, 158, 159).

2. Retraction instrument according to claim 1, characterised in that said first orientable formation (105) presents a cylindrical structure, optionally hollow, having similar dimensions to those of said body (103) and bears in the proximal position a second skew surface (106) co-operating with said first skew surface (131) of said body (103).

3. Retraction instrument according to claim 1, characterised in that said intermediate orientable formation (155) presents a hollow cylindrical structure having dimensions similar to those of said body (103) and bears a third skew surface (158) in the proximal position (200) co-operating with said first skew surface (131) of said body (103) and a fourth skew surface (159) in the distal position (300) co-operating with said second skew surface (106) of said first formation (105).

4. Retraction instrument according to claim 1, characterised in that said rod (102, 122) is mounted in such a fashion that it can rotate around said axis (Z) within said body (103) or within said intermediate orientable formation (155).

5. Retraction instrument according to claim 1, characterised in that said rod (102) is connected at its distal extremity to said at least one deployable formation (105, 155) by means of a first joint (104).

6. Retraction instrument according to claim 5, characterised in that said intermediate rod (122) is connected at its proximal extremity to said rod (102) via a joint (104) and at its proximal extremity it is connected to said first formation (105) via a second joint (157).

7. Retraction instrument according to claim 1, characterised in that said rod (102, 122) is hollow.

8. Retraction instrument according to claim 1, characterised in that said body (103) is integrally connected to a wheel (149) that controls the mechanism of rotation around said axis (Z) of said body (103).

9. Retraction instrument according to claim 1, characterised in that said instrument is provided with a blocking system (700) of the movement of said body (103).

10. Retraction instrument according to claim 1, characterised in that said instrument is provided with a handgrip (130) at its proximal extremity.

11. Retraction instrument according to claim 1, characterised in that said intermediate formation (155) presents at its proximal extremity (200) first locking devices (653) engaging with second locking devices (654) present on said body (103).

12. Retraction instrument according to claim 11, characterised in that there are two each of said first and second locking devices (653, 654) and in diametrically opposed positions.

13. Retraction instrument according to claim 11, characterised in that said intermediate formation (155) presents in the central section, on the inner surface a first tooth (651) that can co-operate with her second tooth (652) present on the external surface, in the central section of said intermediate rod (122).

14. Retraction instrument according to claim 1, characterised in that said first formation (105) is comprised of three portions (115, 125, 135) where said central portion (125) is connected to said rod (102) by means of a joint (104) and is provided, in the proximal position, with a second skew surface (106) co-operating with said first skew surface (131) of said body (103).

15. Retraction instrument according to claim 14, characterised in that said three portions (115, 125, 135) of said deployable formation (105) are formed in a single monolithic body.

16. Retraction instrument according to claim 1, characterised in that said first formation (105) is coupled to instruments useful for retraction or to surgical staplers.

17. Retraction instrument (1) comprising:

a tubular body (3) elongated in the direction of its longitudinal axis (Z);

at least one operating rod (2); and

at least one deployable formation (5) in the distal position with respect to said body (3) and to said rod (2);

at least one bar (71) associated to each of said at least one deployable formation (5), said at least one bar (71) connected at its proximal extremity to said at least one operating rod (2);

in which said formation (5) can move from a retracted position of alignment with said axis (Z) towards at least one deployed position in which said formation (5) is inclined with respect to said axis (Z), and where said at least one formation (5) is coupled to said operating rod (2) in such a fashion that translation movement along said axis (Z) of said at least one operating rod (2) determines—

thanks to co-operation in the movement of said at least one bar (71)—

a deployment movement of said at least one formation (5) and movement in the opposite direction of said at least one operating rod (2) determines a recall movement of said at least one formation (5).

18. Retraction instrument according to claim 17, characterised in that said operating rod (2) is mounted such that it can slide along the axis (Z) inside said body (3).

19. Retraction instrument according to claim 17, characterised in that said body (3) is connected at its distal extremity to said at least one deployable formation (5) by means of a first joint (4).

20. Retraction instrument according to claim 17, characterised in that said at least one bar (71) is connected at its proximal extremity through third joints (73) to said operating rod (2).

21. Retraction instrument according to claim 17, characterised in that said at least one bar (71) is connected at its distal extremity through second joints (72) to each of said at least one deployable formation (5).

22. Retraction instrument according to claim 17, characterised in that said at least one deployable formation (5) is constituted of at least one arm (6).

23. Retraction instrument according to claim 17, characterised in that said body (3) is provided at its proximal extremity with two hemi-valves (31, 32) that embrace said rod (2).

24. Retraction instrument according to claim 17, characterised in that said body (3) is provided with a blocking element (8) of the axial movement of said rod (2).

25. Retraction instrument according to claim 24, characterised in that said blocking element (8) comprises a ring-nut (81) whose rotation around said axis (Z) determines the constriction of said two hemi-valves (31, 32) on said rod (2), blocking its movement.

26. Retraction instrument according to claim 17, characterised in that said operating rod (2) is externally coupled to said body (3) via suitable coupling systems.

27. Retraction instrument according to claim 17, characterised in that said rod (2) is hollow.