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Device for use in an arrangement for monitoring an access to a patient, and method for monitoring a patient access, in particular a vascular access in extracorporeal blood treatment

A vascular access and patient technology, applied in the field of monitoring vascular access, blood processing equipment, and monitoring access to patients, can solve the problems of patient pain, injury, high recirculation rate, etc., and achieve the effect of eliminating pump empty.

Active Publication Date: 2009-06-24
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this double-lumen cannula in combination with the proposed connection are on the one hand the size of the puncture site on the patient and on the other hand the high recirculation rate during blood treatment, since the arterial inlet and the venous outlet are constrained by the design structure. only a few millimeters apart
There is however the risk that one of the sleeves is pressed uncontrollably into the puncture site, causing pain to the patient or even injuring or penetrating the opposite vessel wall

Method used

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  • Device for use in an arrangement for monitoring an access to a patient, and method for monitoring a patient access, in particular a vascular access in extracorporeal blood treatment
  • Device for use in an arrangement for monitoring an access to a patient, and method for monitoring a patient access, in particular a vascular access in extracorporeal blood treatment
  • Device for use in an arrangement for monitoring an access to a patient, and method for monitoring a patient access, in particular a vascular access in extracorporeal blood treatment

Examples

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Embodiment Construction

[0034] figure 1 Main components of a hemodialysis machine with a system for monitoring arterial and venous vascular access are shown. The hemodialysis system has a dialyzer 1 which is divided by a semipermeable membrane 2 into a blood chamber 3 and a dialysis fluid chamber 4 . Connected to one of the patient's arteries via an arterial cannula 5 is an arterial hose line 6 , which leads to the inlet of the blood chamber 3 of the dialyzer. From the outlet of the blood chamber 3 of the dialyzer a venous hose line 7 leads, which is connected via a venipuncture cannula 8 to one of the patient's veins. The arterial hose line 6 is inserted into an occluded blood pump 9 which conveys blood in the extracorporeal blood circuit I.

[0035] The dialysis fluid circuit II of the hemodialysis apparatus comprises a dialysis fluid source 10 which is connected to a dialysis fluid supply line 11 leading to the inlet of the dialysis fluid chamber 4 of the dialyzer. From the outlet of the dialys...

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Abstract

The invention relates to a device for use in an arrangement for monitoring a patient access, in particular a vascular access in extracorporeal blood treatment, which device is used to establish a connection between the arterial and venous tubes (6, 7) or the arterial and venous puncture needles (5, 8; 37, 38), wherein the needles (37, 38) are oriented substantially parallel to each other. If the venous needle (38) slips out of the vascular access, the arterial cannula (37) is forcibly withdrawn. This incident is reliably detected by the known protection systems which, in order to monitor the correct fit of the arterial needle, monitor the pressure in the arterial tube (6) and / or an air intake. In addition, the invention relates to an extracorporeal blood treatment device and to a method for monitoring a patient access, wherein the venous and arterial tubes or the puncture needles are connected to each other.

Description

technical field [0001] The present invention relates to a device for use in a system for monitoring access to a patient, wherein fluid is carried away from the patient with a first hose line having a first patient connection A second hose line at the end returns fluid to the patient, the device being used in particular in systems for monitoring vascular access in extracorporeal blood treatment. Furthermore, the invention relates to a blood treatment device with an extracorporeal blood circuit comprising an arterial hose line with an arterial cannula and a venous hose line with a venous cannula, and has a Access device. Furthermore, the invention relates to a method for monitoring access to a patient, in particular a method for monitoring vascular access in extracorporeal blood treatment. Background technique [0002] In the field of medical technology, various devices are known for carrying fluids away from or into patients via hose lines. Access to the patient is usually...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/36A61M5/14A61M25/02
CPCA61M5/16831A61M25/02A61M2001/3656A61M1/3653A61M2025/024A61M1/3656A61M1/3659
Inventor W·克莱内考夫特J·约纳斯
Owner FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
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