MAUDE Adverse Event Report: STIMWAVE TECHNOLOGIES INC. FREEDOM SPINAL CORD STIMULATOR (SCS) SYSTEM

Model Number FR8A-RCV-A0,FR8A-SPR-B0

Device Problems Improper or Incorrect Procedure or Method (2017); Adverse Event Without Identified Device or Use Problem (2993)

Patient Problem Skin Erosion (2075)

Event Date 11/07/2018

Event Type  Injury  

Manufacturer Narrative

Stimwave quality has investigated the details surrounding a complaint resulting from an infection reported to stimwave on november 26, 2018, by stimwave clinical specialist.Following a successful trial with the freedom spinal cord stimulator (scs) system, the patient had a permanent procedure performed on (b)(6) 2018, in which a freedom-8a receiver stimulator (fr8a-rcv-a0), freedom-8a spare lead (fr8a-spr-b0), and sandshark injectable anchor (sia) system (shrk-all-1k) were implanted in the epidural space at the t8 to t9 level to treat the patient's low back and leg pain.There were no complications during the procedure.The patient experienced pain relief after the procedure and was sent home on antibiotics.The clinical specialist followed up with patient on (b)(6) 2018, and the patient reported good pain relief with the device.On (b)(6) 2018, the implanting clinician contacted the clinical representative to report that the proximal end of one of the receiver stimulator was protruding through the patient's skin at the incision site.The patient reported that he continued to receive good pain relief with the device, and a follow-up appointment scheduled to revise the stimulator.On (b)(6) 2018, the implanting clinician revised the stimulator by trimming the exposed portion of the stimulator and secured the proximal end deeper into the fascia.The revised incision was closed with sutures.The implanting clinician did not identify any infection.The patient reported good pain relief with the device and reported no other complications or issues.Immediately following notification, stimwave quality and management reviewed the implanting clinician's procedure compared to the receiver instructions for use with the clinical specialist.The clinical specialist confirmed that the procedure was performed in accordance with the product instructions for use.No complications arose during the implant procedure.The procedure for fixating the receiver in the receiver instruction for use states that the device is to be anchored beneath the subcutaneous layer as deep as possible to prevent erosion through fat and skin layers (05-00629-2, page 23, k170141).It is likely that the implanting clinician technique for this step of the ifu did not secure the stimulator deep enough, which lead to the eventual device erosion through the skin.This is a known risk for the freedom scs system and had been migrated as far as possible by the revision to the ifu, which detail the steps for coiling the receiver and securing the to the fascia at three locations (05-00629-5, page 19, k180981).At the time of the patient's permanent procedure, this revision of the ifu was not available.The source of the issue was not traced back to inadequate documentation of implant procedure, and the device did not fail to meet performance or safety specifications.The patient is continuing use of the device and is receiving good pain relief.Stimwave will continue to trend events.The root cause of the complaint is not attributed to device failure, the inability of the device to meet performance or safety specifications, nor nonconformance to physical or functional device specifications.The root cause is likely that the physician's technique did not anchor the receiver deep enough into the subcutaneous receiver pocket.The stimwave product was not the source of the issue.Corrective action is not required to remedy the root cause of the complaint.The device did not fail to meet performance or safety specifications.Stimwave has confirmed that the issue is a known risk, mitigated as far as possible, and documented in the stimwave's risk management file.Stimwave was in constant contact with the clinical specialist starting november 26, 2018, regarding the complaint and the root cause investigation.Stimwave confirmed that the implant procedure was performed according to the ifu, and the product did not fail to meet performance and safety specifications.The source of the issue has been mitigated by the revision to the ifu, which details the steps for fixating the receiver to the fascia.Stimwave has informed all parties that the product was not the source of the issue.In compliance with medical device reporting requirements and responsibilities, stimwave quality and its chief medical officer have determined that this issue is considered reportable as erosion of the device through the skin can lead to an injury, and medical or surgical intervention was required to preclude permanent impairment or damage.Stimwave has reported this as an adverse event.

Event Description

On (b)(6) 2018, the implanting clinician contacted the clinical representative to report that the proximal end of one of the receiver "stimulator" was protruding through the patient's skin at the incision site.The patient reported that he continued to receive good pain relief with the device, and a follow-up appointment scheduled to revise the stimulator.On (b)(6) 2018, the implanting clinician revised the stimulator by trimming the exposed portion of the stimulator and secured the proximal end deeper into the fascia.The revised incision was closed with sutures.The implanting clinician did not identify any infection.The patient reported good pain relief with the device and reported no other complications or issues.

• Brand Name: FREEDOM SPINAL CORD STIMULATOR (SCS) SYSTEM
• Type of Device: SPINAL CORD STIMULATOR
• Manufacturer (Section D): STIMWAVE TECHNOLOGIES INC.; 1310 park central boulevard s.; pompano beach FL 33064
• Manufacturer (Section G): STIMWAVE TECHNOLOGIES INC.; 1310 park central boulevard s.; pompano beach FL 33064
• Manufacturer Contact: elizabeth greene ; 1310 park central boulevard s.; pompano beach, FL 33064 ; 8009655134
• MDR Report Key: 8116073
• MDR Text Key: 128778283
• Report Number: 3010676138-2018-00014
• Device Sequence Number: 1
• Product Code: GZB
• UDI-Device Identifier: 00859619004875
• UDI-Public: (01)00859619004875(17)191101(01)00818225020648(17)200201(21)207611-67
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: K170141
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative
• Reporter Occupation: Biomedical Engineer
• Type of Report: Initial
• Report Date: 11/29/2018

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 11/29/2018
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Lay User/Patient
• Device Expiration Date: 11/01/2019
• Device Model Number: FR8A-RCV-A0,FR8A-SPR-B0
• Device Catalogue Number: S8R-1A US
• Device Lot Number: SWO171109, SWO180215
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Distributor Facility Aware Date: 11/26/2018
• Device Age: 14 MO
• Event Location: Home
• Date Manufacturer Received: 11/26/2018
• Was Device Evaluated by Manufacturer?: No
• Date Device Manufactured: 09/01/2017
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention