Multichannel catheter

• US 7,846,129 B2
• Filed: 05/18/2005
• Issued: 12/07/2010
• Est. Priority Date: 04/10/1996
• Status: Expired due to Fees

• Current Assignee: Sorin Group USA Incorporated (LivaNova Plc)
• Original Assignee: Endoscopic Technologies Incorporated (Atricure, Inc.)
• Inventors: Riebman, Jerome B., Bertolero, Raymond S., Bertolero, Arthur A.
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): Hall; Deanna K
• Application Number:
  US11/132,916
• Publication Number:
  US 20050215949A1
• Time in Patent Office: 2,029 Days
• Field of Search: 604/96.01, 604/101.01, 604/131, 604/102.01, 604/102.03, 606/194
• US Class Current: 604/102.03
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: A61B 1/313 for introducing through surgical openings, e.g. laparoscopes
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0206 with antagonistic arms as supports for retractor elements
• CPC Class Codes: A61B 17/2812 with a single pivotal connection A61B17/29 takes precedence
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61B 2017/2904 curved, but rigid
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/2946 Locking means
• CPC Class Codes: A61B 46/10 specially adapted for instruments, e.g. microscopes
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: A61B 90/50 Supports for surgical instruments, e.g. articulated arms
• 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 2025/1052 : for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/1086 : having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• CPC Class Codes: A61M 2025/1097 : with perfusion means for enabling blood circulation only while the balloon is in an inflated state, e.g. temporary by-pass within balloon
• CPC Class Codes: A61M 2210/127 : Aorta
• CPC Class Codes: A61M 25/0029 : characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports catheter shaft surface irregularities A61M2025/006
• 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 25/0032 : characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
• CPC Class Codes: A61M 25/10 : Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1027 : Making of balloon catheters

Abstract

A single, multichannel catheter for extracorporeal circulation of blood to a patient undergoing cardiac treatments or surgery. The catheter has three independent channels and an expandable balloon. The first channel is the largest and delivers blood to a patient to maintain the patient'"'"'s metabolism and perfusion throughout the treatment or surgery. A second, smaller channel is integrated into the wall of the first channel and delivers a biologically active fluid (e.g., for cardioplegia) to the heart and/or venting the left heart. A third, smaller channel is integrated into the wall of the first channel, and delivers an expansion fluid to the balloon to occlude the flow of blood to the heart. Preferably, the first channel accounts for at least about 70% of the total channel volume. The multichannel catheter is best prepared using an extrusion molding technique.

Claims

1. A single multichannel catheter useful for delivering extracorporeal blood to a mammalian patient in need thereof wherein the catheter has defined length and available channel volume with distal and proximal ends and comprises:

at least three independent channels and a balloon at one end of the catheter,

a first largest channel defined by a surrounding wall and of a size to allow delivery of an amount of blood to the patient that is sufficient to support the patient'"'"'s metabolism and perfusion throughout the delivery of blood to the patient, the first channel including a plurality of openings proximal of the balloon for delivering blood to the patient, the plurality of openings being configured into two groupings, a first grouping including at least one opening and located on a portion of the first channel immediately proximal to the balloon and a second grouping including at least one opening and located on a portion of the first channel proximal to the first grouping of openings and separated from the first grouping of openings by a portion of the first channel without openings, wherein when the balloon is positioned in the patient'"'"'s ascending aorta, the first grouping of openings is proximate to the patient'"'"'s left subclavian artery and the second grouping of openings is in the patient'"'"'s descending aorta,

a second channel, smaller than the first channel and integrated into the wall of the first channel, and

a third channel also smaller than the first channel and integrated into the wall of the first channel, the third channel is suitable for delivery of a fluid to the balloon for its expansion when positioned in the ascending aorta to occlude the flow of blood to the heart from the first channel.

2. The catheter of claim 1, wherein the second grouping of openings is located distal to a midpoint of the catheter.

3. The catheter of claim 1, wherein the first grouping of openings is positioned at one or more selected locations within approximately 2.5 cm of a proximal end of the balloon.

4. The catheter of claim 1, wherein a majority of the plurality of openings are elongate with the length of each elongate opening being parallel to the length of the catheter.

5. The catheter of claim 1, further comprising a removable insertion stylet configured to be received within the first channel.

6. The catheter of claim 1, further comprising a second balloon mounted on the catheter adjacent to the balloon and in fluid communication with the third channel.

7. The catheter of claim 1, wherein the catheter is configured such that, when the balloon is positioned in the patient'"'"'s ascending aorta, the first grouping of openings is in the patient'"'"'s ascending aorta, the second grouping of openings is in the patient'"'"'s descending aorta, and the portion of the first channel without openings between the first grouping of openings and the second grouping of openings is in the patient'"'"'s aortic arch.

8. The catheter of claim 7, wherein a portion of the catheter without openings between the first grouping of openings and the second grouping of openings to the first channel is preformed with a curve configured to conform to the patient'"'"'s aortic arch.

9. The catheter of claim 8, further comprising a removable insertion stylet configured to be received within the first channel and having sufficient stiffness to substantially straighten the preformed curve in the catheter to facilitate introduction of the catheter into the patient'"'"'s aorta in a straightened condition.

10. The catheter of claim 1, wherein the second grouping of openings is positioned at one or more selected locations between approximately 7.5 and 30 cm from a proximal end of the balloon.

11. The catheter of claim 1, wherein the first grouping of openings is positioned at one or more selected locations within approximately 2.5 cm of a proximal end of the balloon, and the second grouping of openings is positioned at one or more selected locations between approximately 7.5 and 30 cm from the proximal end of the balloon.

12. The catheter of claim 1, wherein the plurality of openings comprises from 3 to 20 openings.

13. The catheter of claim 1, wherein the second grouping of openings has a greater number of openings than the first grouping of openings.

14. The catheter of claim 1, wherein the second grouping of openings has a greater total opening area than the first grouping of openings.

15. The catheter of claim 4, wherein each elongate opening is approximately oval with a length of approximately 1 to 4 cm parallel to the length of the catheter and a width of not more than 5 mm.

16. The catheter of claim 4, wherein each elongate opening is approximately oval with a length of approximately 2.5 cm parallel to the length of the catheter and a width of not more than 5 mm.