As a result, even more resistance to insertion is incurred at such sites, and the catheter may eventually become lodged such that it cannot be advanced further into the vein. When sideports are present in a catheter, the cross-sectional area and strength of the catheter at these sites is reduced, due in part to the lack of catheter material at the sideport. One such area is in the vicinity of the catheter sideports. Certain portions of the catheter are particularly prone to bunching up. If the pushability of the catheter isn't sufficient to overcome this resistance, the catheter may "bunch up" or "accordion" at the site of the resistance. When a central venous catheter is pushed into a puncture site, it is not uncommon for the catheter to encounter some resistance. However, since the catheter is soft and flexible, it does not have a great deal of column strength. Since the central venous catheter is left indwelling in the vein, it should be soft and flexible in order to prevent erosion of the vein wall at the tip of the catheter. A61M25/008- Strength or flexibility characteristics of the catheter tip.their profiles or arrangements Provisions to keep side holes unblocked by coating, residing in the polymer matrix or releasing an agent out of a reservoir A61M2025/0056- Catheters Hollow probes characterised by structural features provided with an antibacterial agent, e.g.A61M25/0043- Catheters Hollow probes characterised by structural features.A61M2025/004- Multi-lumen catheters with stationary elements characterized by lumina being arranged circumferentially.A61M25/0026- Multi-lumen catheters with stationary elements.A61M25/0023- Catheters Hollow probes characterised by the form of the tubing by the form of the lumen, e.g.A61M25/0021- Catheters Hollow probes characterised by the form of the tubing.shape, atraumatic tip, curved tip or tip structure A61M25/0068- Static characteristics of the catheter tip, e.g.A61M25/0067- Catheters Hollow probes characterised by the distal end, e.g.A61M- DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR.A61- MEDICAL OR VETERINARY SCIENCE HYGIENE.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Cook Inc filed Critical Cook Inc Publication of EP1638633A1 publication Critical patent/EP1638633A1/en Application granted granted Critical Publication of EP1638633B1 publication Critical patent/EP1638633B1/en Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links Original Assignee Cook Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Osborne Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number EP04777164A Other languages German ( de) Google Patents EP1638633B1 - Central venous catheterÄownload PDF Info Publication number EP1638633B1 EP1638633B1 EP04777164A EP04777164A EP1638633B1 EP 1638633 B1 EP1638633 B1 EP 1638633B1 EP 04777164 A EP04777164 A EP 04777164A EP 04777164 A EP04777164 A EP 04777164A EP 1638633 B1 EP1638633 B1 EP 1638633B1 Authority EP European Patent Office Prior art keywords catheter lumen lumens catheter body central venous Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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