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anchored nerve block catheter

A nerve block and catheter technology, applied in the direction of catheters, spinal nerve electrodes, hollow probes, etc., can solve the problems of delayed recovery of femoral nerve block, increased risk of failure, increased hospitalization costs, etc.

Active Publication Date: 2017-05-10
SRI INTERNATIONAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, prolonged femoral nerve block during total knee replacement (TKR) surgery may increase risk of failure, delay recovery and lengthen hospital stay (LHS)
On the other hand, an ineffective femoral nerve block during TKR may also delay recovery, lengthen hospital stay, reduce patient satisfaction and increase hospital costs

Method used

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  • anchored nerve block catheter
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  • anchored nerve block catheter

Examples

Experimental program
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Embodiment

[0129] Typical usage example: ACL repair. Using the previous method (ie, a single peripheral nerve block), the patient receives a prescribed anesthetic that causes nausea and vomiting and reduces patient satisfaction. Alternatively, intraoperative nerve block (NB) replaces anesthetics. However, these options do not address the needs of physicians, require excessive operating room time, and are costly. In addition, current methods involving continuous peripheral nerve blocks usually require patients to use prescription balloon pumps with high failure rates. In contrast, the catheter system described herein reduces the use of balloon pumps and can improve care procedures.

[0130] A device according to the present disclosure has Malecott extension when the tissue lock is prepared, implanted, and activated. The force required to remove the catheter from the muscle tissue was significantly higher than expected. In in vitro and in vivo experiments, the use of a tensile testing mac...

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PUM

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Abstract

The present invention relates to medical devices and, in particular, to catheter medical devices. In one aspect is a nerve block catheter system comprising: a dual sheath catheter including an inner sheath and an outer sheath, wherein the distal end of the sheath is connected, the inner sheath defining a fluid a delivery lumen, and the outer sheath includes a tissue lock movable between a collapsed position and an extended position, wherein the tissue lock forms a reversible tissue anchor when the tissue lock is in the extended position; and an actuator connected to the proximal end of the catheter and configured to activate the tissue lock by sliding the outer sheath longitudinally relative to the inner sheath.

Description

[0001] Inventors: J. Hoffes, M. Kosari, Qiu Chunyuan, PE Garcia, and K.S. Konig, all from Menlo Park, California. [0002] Applicants: SRI International Consulting and Consulting Company, Stanford University Trustee Board and Qiu Chunyuan. [0003] This invention was made with government support under the Department of Health and Human Services (DHHS) / Food and Drug Administration approval number 1P50FD003782. The government has certain rights in this invention. [0004] Cross references to related applications [0005] This application requires U.S. application serial number 61 / 754,484 filed on January 18, 2013, U.S. application serial number 61 / 845,238 filed on July 11, 2013, and U.S. application filed on July 11, 2013 Priority of serial number 61 / 845,244 and U.S. application serial number 61 / 845,248 filed on July 11, 2013, the disclosure of which is incorporated herein in its entirety. Background technique [0006] Increasing evidence from animal models to clinical studies has prove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M25/02
CPCA61M19/00A61M25/0017A61M25/0074A61M25/0108A61M25/04A61M25/005A61M2025/0056A61M2202/048A61N1/0551A61M25/0053A61M25/02A61M2025/0293A61M25/0026
Inventor 邱春元J·霍菲斯M·科萨里P·E·加西亚K·S·科尼格
Owner SRI INTERNATIONAL