CARDIOVASCULAR CATHETER

• US 3,788,328 A
• Filed: 04/29/1971
• Issued: 01/29/1974
• Est. Priority Date: 04/29/1971
• Status: Expired due to Term

• Current Assignee: Sherwood Medical Company (Medtronic Plc)
• Original Assignee: David S. Sheridan, Ralph D. Alley
• Inventors: Alley, Ralph D., Sheridan, David S.
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US05/138,770
• Time in Patent Office: 1,006 Days
• Field of Search: 128/2A,2F,2M,2R,2S,245,246,348,35R
• US Class Current: 604/178
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 2025/0293 Catheter, guide wire or the like with means for holding, centering, anchoring or frictionally engaging the device within an artificial lumen, e.g. tube
• CPC Class Codes: A61M 25/003 characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/0069 Tip not integral with tube
• CPC Class Codes: A61M 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence

Abstract

A cardiovascular catheter for use particularly in open heart surgery and related operations requiring varying forms of cardiopulmonary bypass. The catheter has a fixed ring provided on the catheter proximal to drainage inlets and may have a sliding ring snug fit on the catheter proximal to the fixed ring for securing the catheter to a penetrated portion of the anatomy, such as the heart wall, between the two rings to assist in holding the catheter in place. In one form of the invention, the fixed ring is used alone to secure the catheter in place, for instance, during a drainage or perfusion application.

Claims

1. A catheter suitable for use during heart surgery comprising a double lumen catheter including a main Tube having a closed tip for insertion into the heart with one lumen defining a drainage channel and the other lumen being of smaller diameter and defining a vent channel, said two lumens being in communication with each other at their distal ends and terminating at their proximal ends as separate branch tubes, the proximal end of said vent channel branch tube comprising means for removably connecting and sealing the vent channel branch proximal end in flow communication with the drainage channel branch tube proximal end, inlet opening means through the catheter wall into said drainage channel adjacent but spaced from said tip, said vent channel having an open distal end terminating within said tip distal to said inlet opening means, holding means for stabilizing the position of the catheter against movement at the site of penetration of the heart including a noninflatable ring secured on the outer surface of the main tube adjacent the distal end of the catheter but proximal to the inlet opening means and adapted to penetrate the heart wall incision together with the tip and distal end of the catheter, and a second ring slidably mounted on the main tube proximal to said first ring, said second ring being in snug forced slip fit with the catheter outer surface permitting it to be moved with moderate force axially along the main tube toward said first ring to clamp the heart wall therebetween.

2. The catheter of claim 1 wherein said first ring has a beveled leading surface at the end facing the distal end of the catheter.

3. The catheter of claim 1 wherein said second ring is larger axially and diametrically than said first ring.

4. A cannula suitable for use during surgery comprising a catheter having a distal portion with inlet opening means, said distal portion being adapted to be inserted through a surgical incision in the wall of a hollow viscus such as the heart or a blood vessel, a proximal portion of increased diameter as compared to the distal portion and being joined thereto by a gradually tapering integral portion, said proximal portion being adapted to be connected to a tube leading to an external machine, a vent passage within said catheter and extending from within said distal portion to a separate outlet at said proximal portion, and holding means for stabilizing the position of the catheter against movement at the site of penetration by the catheter of the hollow viscus, including a non-inflatable ring secured on the outer surface of the catheter adjacent the distal end of the catheter but proximal to the inlet opening means, said non-inflatable ring having a tapered forward end face adapted to permit the ring to slide through an incision, and a second ring slidably mounted on the catheter proximal to said first ring, said second ring being in snug forced slip fit with the catheter outer surface and adapted to be moved with force axially along the catheter toward said first ring to secure the catheter to said body.