Device for clamping large blood vessels

• US 20050256454A1
• Filed: 05/29/2003
• Published: 11/17/2005
• Est. Priority Date: 06/05/2002
• Status: Abandoned Application

• Current Assignee: Mariangela Moggi
• Original Assignee: Mariangela Moggi
• Inventors: Moggi, Mariangela
• Application Number:
  US10/515,992
• Publication Number:
  US 20050256454A1
• Time in Patent Office: Days
• US Class Current: 604/102.10
• CPC Class Codes: A61B 17/12045 double occlusion, e.g. during anastomosis
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61M 2025/1015 having two or more independently movable balloons where the distance between the balloons can be adjusted, e.g. two balloon catheters concentric to each other forming an adjustable multiple balloon catheter system
• CPC Class Codes: A61M 2025/1081 having sheaths or the like for covering the balloon but not forming a permanent part of the balloon, e.g. retractable, dissolvable or tearable sheaths
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters
• CPC Class Codes: A61M 39/0613 with means for adjusting the seal opening or pressure A61M39/0693 takes precedence

Abstract

The device includes: a first catheter having dilators, a first inflatable balloon active between an inflated configuration, in which the first inflatable balloon is filled with a pressurised fluid and extends in a radial direction away from the first catheter, and a deflated configuration; elements for sending the fluid to the first inflatable balloon; an external tube, axially slidable on the first catheter, for covering and uncovering the first inflatable balloon in the deflated configuration; a second catheter internally insertable in the first catheter and having an internal passage for a metal guide wire; a second inflatable balloon active between an inflated configuration, in which the second inflatable balloon is filled with a pressurised fluid and extends in a radial direction away from the second catheter, and a deflated configuration; elements for sending fluid to the second inflatable balloon.

Claims

1. ). A device for clamping large blood vessels, comprising:

a first catheter (2);

a first inflatable balloon (3), associated to the first catheter (2) and active between an inflated configuration, in which the first inflatable balloon (3) is filled with a pressurised fluid and extends in a radial direction away from the first catheter (2), and a deflated configuration;

means (4) for sending the fluid to the first inflatable balloon (3);

an external tube (5), axially slidable on the first catheter (2), for covering and uncovering the first inflatable balloon (3) in the deflated configuration thereof;

a second catheter (6), which can be inserted internally of the first catheter (2);

a second inflatable balloon (7), associated to the second catheter (6) and active between an inflated configuration, in which the second inflatable balloon (7) is filled with a pressurised fluid and extends in a radial direction away from the second catheter (6), and a deflated configuration;

means (8) for sending the fluid to the second inflatable balloon (7).

2. ). The device of claim 1, wherein the first catheter (2) comprises a first internal tube (9) having a first end (10) and a second end (11), the second end (11) bearing the first inflatable balloon (3).

3. ). The device of claim 2, wherein the first catheter (2) further comprises a screw-operated haemostatic valve (12), internally engaged to the first end (10) of the first internal tube (9).

4. ). The device of claim 1, wherein the first catheter (2) comprises means (13) for axially blocking the second catheter (6) internally of the first catheter (2).

5. ). The device of claim 2, wherein the first internal tube (9) exhibits, in proximity of the second end (11), an external radial increase in section, defining an annular surface (14) which is perpendicular to the longitudinal development of the first internal tube (9) and which faces towards the first end (10).

6. ). The device of claim 5, wherein the radial increase decreases towards the second end (11) of the first internal tube (9), defining a tapered external surface (15).

7. ). The device of claim 6, wherein the external tube (5) exhibits a first end (16) and a second end (17), the external tube (5) being arranged coaxially to the first internal tube (9) and being externally slidable on the first internal tube (9) between a first position in which the first end (16) of the external tube (5) is in contact with the annular surface (14) and the external tube (5) covers the first inflatable balloon (3), and a second position in which the first end (16) of the external tube (5) is not in contact with the annular surface (14) and the external tube (5) does not cover the first inflatable balloon (3).

8. ). The device of claim 6, wherein the first internal tube (9) can exhibit a plurality of radial through-holes (18) arranged in proximity of the annular surface (14) and on an opposite side of the annular surface (14) to the tapered external surface (15).

9. ). The device of claim 7, wherein the first internal tube (9) comprises a lateral conduit (19) having a free first end (20), and a second end (21) which is connected in proximity of the first end (10) of the first internal tube (9) and which is in fluid communication with an inside of the first internal tube (9).

10. ). The device of claim 6, wherein the first inflatable balloon (3) is arranged in proximity of the annular surface (14) on an opposite side thereof with respect to the tapered external surface (15).

11. ). The device of claim 2, wherein the means (4) for sending fluid to the first inflatable balloon (3) comprise a conduit (22) for introducing fluid internally of the first inflatable balloon (3), which conduit (22) is afforded internally of the first internal tube (9) and which conduit (22) has a first outlet (23) arranged externally and in proximity of the first end (10) of the first internal tube (9) and a second outlet (24) in fluid communication with an inside of the first inflatable balloon (3).

12. ). The device of claim 1, wherein the second catheter (6) comprises a second internal tube (25) having a first end (26) and a second end (27).

13. ). The device of claim 12, wherein the second internal tube (25) exhibits a plurality of radial through-holes (28) arranged in proximity of the second inflatable balloon (7), on a side thereof nearer the first end (26).

14. ). The device of claim 12, wherein the second internal tube (25) comprises a lateral conduit (29), having a free first end (30) and a second end (31) which is connected in proximity of the first end (26) of the second internal tube (25) and which is in fluid communication with the inside of the second internal tube (25).

15. ). The device of claim 1, wherein the second catheter (6) exhibits a plurality of radio-opaque markers (35) arranged to define a measurement scale.

16. ). The device of claim 12, wherein the second inflatable balloon (7) is arranged in proximity of the second end (27) of the second internal tube (25).

17. ). The device of claim 12, wherein the means (8) for inflating the second inflatable balloon (7) comprise a conduit (32) for introduction of fluid internally of the second inflatable balloon (7), which conduit (32) is afforded in the second internal tube (25) and has a first exit (33) which is arranged externally of the second internal tube (25) in proximity of the first end (26) of the second internal tube (25), and a second exit (34) in fluid communication with the inside of the second inflatable balloon (7).

18. ). The device of claim 1, wherein the device comprises a dilator (36) having an internal passage for a metal guide wire, which internal passage has an elongate axial symmetric shape and a first end (37) and a second end (38), the first end (37) being tapered to define a wedge-shaped surface (46), the dilator (36) being slidable internally of the first catheter (2), and being able to assume a position in which the first end (37) of the dilator (36) projects externally of the second end (11) of the first internal tube (9).

19. ). The device of claim 18, wherein the dilator (36) can have at an apex thereof a calibre which is such as to occlude the first catheter (2) at the end (11) and a smaller calibre in other parts thereof in order to enable passage of liquids up to the radial through-holes (18).

20. ). The device of claim 12, wherein the second internal tube (25) is provided with an internal passage for a metal guide wire (43);

a calibre of the internal passage being smaller at the second end (27) than at other parts thereof.