Endovascular surgery device

• US 20060084927A1
• Filed: 11/18/2003
• Published: 04/20/2006
• Est. Priority Date: 11/28/2002
• Status: Abandoned Application

• Current Assignee: Maxime Formichi
• Original Assignee: Maxime Formichi
• Inventors: Formichi, Maxime
• Application Number:
  US10/536,008
• Publication Number:
  US 20060084927A1
• Time in Patent Office: Days
• US Class Current: 604/272
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24
• CPC Class Codes: A61M 2025/0091 the single injection needle being fixed
• CPC Class Codes: A61M 25/06 Body-piercing guide needles or the like

Abstract

The present invention relates to surgical device enabling a blood vessel to be punctured, in particular an artery, and enabling a radiological guidewire to be inserted in endovascular manner for use in laparoscopic or celioscopic endovascular surgery, in particular of the intra-abdominal blood vessels, the device comprises a first transparent flexible tube co-operating at its distal end with a hollow metal needle to which it is coupled, and in which it is possible to cause a said radiological guidewire to pass, said first tube having, at its proximal end, closure means for closing said first tube, together with insertion means enabling a said radiological guidewire to be inserted in leaktight manner into said first tube.

Claims

1. A surgical device enabling a blood vessel to be punctured, in particular an artery, and a radiological guidewire to be inserted in endovascular manner, for use in laparoscopic or celioscopic endovascular surgery, in particular of the intra-abdominal blood vessels, the device being characterized in that it comprises a first transparent flexible tube (1) co-operating at its distal end with a hollow metal needle (2) to which it is coupled, and in which it is possible to cause said radiological guidewire to pass, said first tube having, at its proximal end, closure means (4) for closing said first tube, together with insertion means (4₁) enabling a said radiological guidewire to be inserted in leaktight manner into said first tube.

2. A device according to claim 1, characterized in that said needle (2) presents a curved longitudinal profile.

3. A device according to claim 2, characterized in that the curvature of said needle (2) corresponds to its distal end being inclined relative to its proximal end secured to said coupling element (2₂) by an angle lying in the range 10°

to 45°

.

4. A device according to claim 1, characterized in that said hollow metal needle (2) comprises:

a distal portion (2₁) with a pointed end and having a first hollow longitudinal internal channel, preferably of circular cross-section, through which a said radiological guidewire can be inserted; and

a proximal portion forming a coupling element (2₂) for coupling said needle (2) to said first transparent tube (1), said coupling element (2₂) having a second hollow internal channel providing communication between the inside of said first transparent tube (1) and said first hollow channel of said needle, and the inside diameter of said second internal channel of the coupling element (2₂) being not less than the diameter of said first hollow internal channel.

5. A device according to claim 4, characterized in that said first transparent tube (1) presents an inside diameter that is greater than or equal to the inside diameter of said second hollow internal channel of said coupling element (2₂), which second hollow channel includes a transition zone of circular cross-section in the form of a funnel of diameter that decreases progressively until it joins said first hollow internal channel of said needle (2₁).

6. A device according to claim 5, characterized in that said coupling element (2₂) comprises at its proximal end a first tubular sleeve (3₁) having an outside surface onto which the distal end of said first transparent tube (1) is fitted, said first sleeve (3₁) being extended at the distal end by an intermediate portion (3₂) providing the junction between said first tubular sleeve (3₁) and said pointed distal portion (2₁) of the needle, such that said intermediate portion (3₂) presents a circular cross-section of outside diameter greater than or equal to that of the outside diameter of said first tubular sleeve, and decreases progressively from its largest diameter cross-section to its cross-section at the junction with said distal portion at the pointed end (2₁) of the needle, said second hollow internal channel of said coupling element (2₂) including inside said intermediate portion (3₂) said funnel-shaped transition zone of cross-section that decreases progressively.

7. A device according to claim 1, characterized in that said first transparent tube (1) includes a leaktight capsule (4) at its proximal end for closing said first tube (1), said capsule (4) including a flexible membrane (4₁) of elastic material, the membrane being incised so as to be suitable for having a said radiological guidewire pass therethrough in leaktight manner.

8. A device according to claim 1, characterized in that said first tube (1) includes injection means (5) enabling a liquid to be injected into said first tube (1), the injection means preferably being constituted by a lateral orifice (5) in the proximal zone of said first tube that is to remain outside said patient, said lateral orifice (5) preferably being integrated in a said leaktight capsule (4), when present.

9. A device according to claim 8, characterized in that said injection means (5) comprises a second flexible tube (6) suitable for fitting to said lateral orifice (5) and having at its free end a cock (61), preferably a multi-port cock.

10. A kit of elements suitable for being assembled together to provide a device according to claim 1, the kit being characterized in that said elements comprise:

said first transparent flexible tube (1);

said hollow metal needle (2);

where appropriate, said closure means, preferably said leaktight capsule (4); and

where appropriate, said injection means, preferably said second flexible tube (6) and more preferably including said cock (6₁);

said elements being preassembled or dissembled, at least in part, and preferably in the same packaging.