Cardiovascular catheter

• US 3,903,895 A
• Filed: 05/01/1974
• Issued: 09/09/1975
• Est. Priority Date: 01/05/1973
• 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:
  US05/465,926
• Time in Patent Office: 496 Days
• Field of Search: 128/2A,245,246,348,35R,351,DIG.3,DIG.26
• US Class Current: 604/178
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61M 1/3623 Means for actively controlling temperature of blood
• CPC Class Codes: A61M 1/3659 Cannulae pertaining to extracorporeal circulation
• 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 making of catheters A61M25/0009
• 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 natural lumen, e.g. vessels A61M25/04
• 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 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• 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
• CPC Class Codes: Y10S 128/03 Heart-lung
• CPC Class Codes: Y10S 128/26 Cannula supporters

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 surgery and having a distal end portion and a proximal end portion having a larger diameter than said distal end portion and being joined by an intermediate integrally formed partially tapered body portion, said distal portion having an end opening and at least one side opening communicating with the inside of said catheter, said proximal portion being adapted to be connected to an externally operative device, a non-inflatable ring fixedly secured on the outer surface of the distal end of the catheter but proximal to the side opening, said ring tapering from a distal end of said ring to an enlarged diameter portion and having a proximal wall portion lying substantially perpendicular to said catheter, said ring being adapted to penetrate the incision together with the tip and distal end of the catheter, and a second ring slidably mounted on the catheter proximal to said first ring and having a distal wall portion lying substantially perpendicular to said catheter, 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 catheter.

2. A catheter suitable for use during surgery and having a distal end portion and a proximal end portion having a larger diameter than said distal end portion and being joined by an intermediate integrally formed partially tapered body portion, said distal portion having an end opening and at least one side opening communicating with the inside of said catheter, said proximal portion being adapted to be connected to an externally operative device, holding means for stabilizing the position of the catheter against movement at the site of penetration through an incision in a hollow viscus such as a heart or blood vessel, including a non-inflatable ring secured on the outer surface of the catheter adjacent the distal end of the catheter but proximal to the side opening, said ring tapering from a distal end of said ring to an enlarged diameter portion and having a proximal wall portion lying substantially perpendicular to said catheter, said ring being adapted to penetrate the incision together with the tip and distal end of the catheter, and a second ring slidably mounted on the catheter proximal to said first ring and having a distal wall portion lying substantially perpendicular to said catheter, 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 catheter toward the said first ring to clamp the walls of the hollow viscus therebetween.

3. A cannula suitable for use during surgery comprising a catheter having an elongate uniform diameter distal portion with at least one side inlet opening and with an open inlet end, said distal portion being adapted to be inserted through a surgical incision in the wall of a hollow viscus such as a heart or a blood vessel, said catheter having an elongate proximal portion of increased diameter as compared to the distal portion and being joined thereto by a gradually tapering integral portion, said proximal portion having a substantial axis length, said proximal portion being adapted to be connected to a tube leading to an external machine, holding means on said distal portion for stablizing the position of the catheter against movement including a non-inflatable ring secured on the outer surface of the catheter adjacent the distal end thereof but proximal to the inlet opening, said ring having a tapered distal portion and a planar transverse proximal portion, 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 permitting it to be moved with moderate force axially along the catheter toward and away from said first ring, and said second ring having a planar transverse distal portion lying parallel to said planar portIon on said non-inflatable ring for engaging the surface of the wall surrounding said incision for holding said catheter in position.