CONTROLLABLE TIP GUIDE BODY AND CATHETER

• US 3,552,384 A
• Filed: 07/03/1967
• Issued: 01/05/1971
• Est. Priority Date: 07/03/1967
• Status: Expired due to Term

• Current Assignee: Baxter International Inc.
• Original Assignee: David L. Swendson, Donald A. Raible, Will R. Pierie
• Inventors: Pierie, Will R., Raible, Donald A., Swendson, David L.
• Application Number:
  US04/650,863
• Time in Patent Office: 1,282 Days
• US Class Current: 600/434
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61M 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/0136 Handles therefor
• CPC Class Codes: A61M 25/0144 having flexible regions as a result of inner reinforcement means, e.g. struts or rods
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires
• CPC Class Codes: A61M 25/09033 with fixed mandrils, e.g. mandrils fixed to tip; Tensionable wires
• CPC Class Codes: A61M 25/09041 Mechanisms for insertion of guide wires
• CPC Class Codes: A61M 5/00 Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests vaccination appliances for veterinary use A61D1/025 ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M39/00; containers specially adapted for medical or pharmaceutical purposes A61J1/00; combinations of vial and syringe for mixing or transferring their contents A61J1/20; holders for containers for collecting, storing or administering blood or medical fluids A61J1/16

Abstract

A device for general and selective angiography and other purposes having a handle, controllable tip guide body, injection tube unit and catheter outer body wherein the tip of the guide body may be bent, rotated, exposed and sheathed in the catheter by control means on the handle and injection tube unit, and locked in selected position, the several parts being usable as a complete assemblage and in different combinations. The guide body is made torsionally rigid so that the rotation of the tip corresponds to the manipulation of a rotator on the handle, the guide body rotating within the catheter outer body which is nonrotatable. The guide body extends through the injection tube unit which is interposed between the handle and the catheter outer body. The injection tube unit has a sliding telescoping part for extending the catheter outer body to sheath the guide body and for retracting the catheter outer body to unsheath the tip of the guide body. For certain purposes the injection tube unit and catheter outer body may be removed and the guide body and handle used together as an operative unit. Also, the guide body is conveniently removable from the handle.

Claims

1. An instrument comprising an elongated flexible guide body having bending means in its tip portion, a pull wire in said guide body for actuating said bending means, a handle on the proximal end of said guide body, means in said handle connected with said guide body for rotating said guide body relative to said handle, means in said handle for pulling said pull wire relative to said guide body, an injection tube unit fixedly mounted on said handle, a catheter outer body fixedly mounted on a portion of said injection tube unit, said guide body extending through said catheter outer body and said injection tube unit, detachable connections between the proximal end of said injection tube unit and said handle and between the distal end of said injection tube unit and said catheter outer body, a shutoff valve in said injection tube unit arranged to close a passageway for said guide body in said unit, a branch fitting on said injection tube unit between said valve and the distal end of the unit, and a resilient circular seal in said unit on the opposite side of said valve engaging said guide body.

2. A handle for a flexible, elongated controllable tip guide body having a pull wire extending out of said body for bending said tip;

said handle comprising an elongated body member, a rotator on said body member, a slide mounted in said body member for rotation and reciprocation on the axis of said rotator, means on said rotator or rotating said slide, means on said handle for reciprocating said slide, axial passageways through said rotator and slide, an axial thrust seat in said rotator passageway for the proximal end of said guide body, an axial thrust seat on said side at the proximal end of said slide passageway for a button on the proximal end of said pull wire, a hole in the proximal end of said slide at one side of said button thrust seat arranged to convey said button to a position emergent from said slide when said guide body and pull wire are inserted in said passageways, and a slot of less width than said button interconnecting said hole and button seat for lateral transfer of said pull wire from said hole to said button seat for seating said button.

3. A handle as defined in claim 2, said rotator being situated at the distal end of said slide, said rotator having a sliding connection with said slide for rotating the slide.

4. A handle as defined in claim 2, including means for adjusting said button seat lengthwise on said slide.

5. A handle as defined in claim 2, including adjustable stop means on said handle to hold said slide in longitudinally adjusted positions.

6. A handle as defined in claim 2, including a connector on the distal end of the handle for mounting a tubular member over said guide body.

7. A handle as defined in claim 2 including a rotator support having an outer end extending outside of said handle and means on said outer end of said rotator support for mounting a tubular member concentric with said passageways.

8. A handle as defined in claim 2, including a spring urging said slide in a distal direction, said means for reciprocating said slide comprising a lever on said handle arranged to move said slide in a proximal direction.

9. A handle as defined in claim 8, including a lever bracket in said body member having a pivotal support for said lever, a slide bracket mounted on said lever bracket and having a bearing for said slide, said lever having a cam-shaped inner end, a cam washer on said slide engaging said cam-shaped inner end, and a thumb screw securing said lever bracket in said body member, said brackets, slide and lever being removable from said proximal end of said body member as a unit when said thumb screw is removed.

10. An injection tube unit comprising a guide tube, an injection tube slidably mounted in said guide tub, a longitudinal passageway through said injection tube, a shutoff valve for said passageway, a branch fitting communication with said passageway between said valve and one end of said injection tube, and a resilient circular seal in said passageway at the opposite end of said injection tube arranged to engage a body extending through said passageway.

11. An injection tube unit as defined in claim 10, said one end of said injection tube projecting out of one end of said guide tube, connector means in communication with said passageway on said one end of said injection tube, and connector means in communication with said passageway on the opposite end of said guide tube.

12. An inJection tube unit as defined in claim 10, including a longitudinal guide slot in said guide tube, a stop screw in said injection tube slidable in said slot, and stop means for said screw at the opposite ends of said slot.

13. A torsionally rigid controllable tip guide body comprising a plural layer wire coil having adjacent turns in each layer in contact with each other and adjacent layers wound in opposite directions, a pull wire slidable in said coil, a distal end fitting on said guide body abutting the distal ends of said coil and layers of wire, a spring leaf having a proximal end connected with said fitting, said pull wire extending slidably through said fitting and connected with the distal end of said spring leaf, and a continuous plastic covering over said coil, said fitting and said spring leaf and pull wire, said plastic being adherent to said coil, fitting and spring leaf and nonadherent to said pull wire.

14. A guide body as defined in claim 13, including guide means for said pull wire along the length of said spring leaf.

15. A guide body as defined in claim 14, said guide means comprising a coil of wire surrounding said spring leaf and pull wire.

16. A guide body as defined in claim 13, including a fitting on the proximal end of said guide body having an end seating surface and a flat tongue extending therefrom for rotating the guide body.

17. An instrument comprising an elongated flexible and torsionally rigid guide body having bending means in its tip portion, a handle on said guide body having means to operate said bending means and means to rotate said guide body relative to said handle, a catheter outer body surrounding said guide body, and means connected with said handle and said catheter outer body arranged to slide said catheter outer body on said guide body so as to sheath and unsheath the bendable tip portion of said guide body, said last means holding said catheter outer body nonrotatable relative to said handle.