Spectranetics ELCA Coronary Laser Atherectomy Catheter Instruction Manual

Spectranetics ELCA Coronary Laser Atherectomy Catheter

Caution : Federal (USA) law restricts this device to sale by or on the order of a physician with appropriate training.

Description

Over-The-Wire (OTW) catheters are constructed of multiple fiber optics arranged concentrically around a guidewire lumen and are intended for use in the coronary vasculature for recanalization of obstructed arteries. A side arm adapter located at the proximal end of the usable length facilitates the use of the laser catheter over a 0.014” guidewire. When connected to the CVX-300® Excimer Laser System or the Philips Laser System, the recommended operating parameters are: fluence 30-80 mJ/mm2 at a pulse rate of 25-80 Hz.
Rapid exchange (RX) catheters consists of optical fibers encased within a polyester shaft. There are two major portions of the laser catheter shaft, the proximal portion which terminates at the laser connector, and the distal portion which terminates at the tip having direct patient contact. The fibers terminate at the distal tip within a polished adhesive end and at the proximal end within the laser connector. A radiopaque marker is located on the distal end of the laser catheter to aid localization within the coronary vasculature in conjunction with fluoroscopy. The guidewire lumen begins at the distal tip and is concentric with the fiber array, and exits the laser catheter 9 cm away from the distal tip which has direct patient contact. A proximal marker is located on the outer jacket of the laser catheter, 104 cm from the distal tip, to assist in the placement of the laser catheter within a femoral guiding catheter without the need for fluoroscopy. When connected to the CVX-300® Excimer Laser System or the Philips Laser System, the operating parameters are: fluence 30-80 mJ/mm2 at a pulse rate of 25-80 Hz.

Mechanism of Action for ELCA Catheters
The multifiber laser catheters transmit ultraviolet energy from the laser system to the obstruction in the artery. The ultraviolet energy is delivered to the tip of the laser catheter to photoablate fibrous, calcific, and atheromatous lesions, thus recanalizing diseased vessels (photo ablation is the process by which energy photons cause molecular bond disruption at the cellular level without thermal damage to surrounding tissue). The Spectranetics laser catheters have a proprietary lubricious coating to ease their trackability through coronary vessels.

Glossary of Special Terms
Antegrade Fashion = In the direction of blood flow. Baseline Angiography = Record of the cardiac muscle and blood vessels prior to a given interventional angioplasty procedure. Retrograde Fashion = In the direction opposite to blood flow.

ELCA X-80 Coronary Laser Atherectomy Catheter Models (OTW)

Device Description| Model Number| Max. Guidewire Compatibility (in.)| Max. Tip Diameter (in.)| Max. Tip Diameter (mm)| Sheath Compatibility (Fr)| Working Length (cm)
---|---|---|---|---|---|---
OTW Catheter Specifications
0.9 mm| 110-002| 0.014| 0.038| 0.97| 4| 135 ± 5

ELCA Coronary Laser Atherectomy Catheter Models (RX)

Device Description| Model Number| Max. Guidewire

Compatibility (in.)

| Max. Tip

Diameter (in.)

| Max. Tip

Diameter (mm)

| Sheath

Compatibility (Fr)

| Working

Length (cm)

---|---|---|---|---|---|---
Rapid Exchange (RX) Catheter Specifications
0.9 mm| 110-004| 0.014| 0.038| 0.97| 4| 135 ± 5

Indications for Use

The X-80 Laser Catheters used in conjunction with the Spectranetics CVX-300® Excimer Laser System or the Philips Laser System are intended for use in patients with single or multivessel coronary artery disease, either as a stand-alone modality or in conjunction with Percutaneous Transluminal Coronary Balloon Angioplasty (PTCA), and who are acceptable candidates for coronary artery bypass graft (CABG) surgery. Adjunctive balloon angioplasty was performed, at the clinical investigator’s discretion, for 85% of the lesions treated. The following Indications for Use, Contraindications and Warnings have been established through multicenter clinical trials. Clinical experience has provided reasonable assurance that the multifiber laser catheter models are safe and effective for the following indications:

• Occluded saphenous vein bypass grafts
• Ostial lesions
• Long lesions – (greater than 20 mm in length)
• Moderately calcified stenoses – (Heavily calcified stenoses are those lesions that demonstrate complete calcification when identified under fluoroscopy by angiography prior to the procedure. Moderately and slightly calcified stenoses are all others.)
• Total occlusions traversable by a guidewire
• Lesions which previously failed balloon angioplasty – (This includes those lesions that were treated unsuccessfully by PTCA. Lesions that have undergone a complicated PTCA procedure are not included in this category.)

These lesions must be traversable by a guidewire and composed of atherosclerotic plaque and/or calcified material. The lesions should be well defined by angiography.

Contraindications

• Patient has acute thrombosis.
• Lesion is in an unprotected left main artery.
• Patient has experienced an acute myocardial infarction.
• Patient has ejection fraction of less than 30%.
• Lesion is beyond acute bends or is in a location within the coronary anatomy where the catheter cannot traverse.
• Guidewire cannot be passed through the lesion.
• Lesion is located within a bifurcation.
• Patient is not an acceptable candidate for bypass graft surgery.

Warnings

Federal (USA) law restricts this device to sale by or on the order of a physician with appropriate training. A clinical investigation did not demonstrate safety and effectiveness in lesions amenable to routine PTCA or those lesions not mentioned in the Indications for Use, above. The effect of adjunctive balloon angioplasty on restenosis, as opposed to laser alone, has not been studied. Physicians should exercise care when treating patients for coronary artery disease with the CVX-300® Excimer Laser System or the Philips Laser System. Spectranetics Coronary Laser Atherectomy Catheter require software version 3.712 or 3.812 or higher when used with the CVX-300® and software version 1.0 (b5.0.3) or higher when used with the Philips Laser System. tics Coronary Laser Atherectomy Catheter require software version 3.712 or 3.812 or higher when used with the CVX-300® and software version 1.0 (b5.0.3) or higher when used with the Philips Laser System.

1. Training of laser safety and physics.
2. Review of patient films of lesions that meet the indications for use.
3. A review of cases demonstrating the ELCA technique in lesions that meet the indications for use.
4. A review of laser operation followed by a demonstration of the laser system.
5. Hands on training with the laser system and appropriate model.
6. A fully trained Spectranetics representative will be present to assist for a minimum of the first two cases.
7. Following the formal training session, Spectranetics will make available additional training if so requested by the physician, support personnel, the institution or Spectranetics.

Precautions

This catheter has been sterilized using Ethylene Oxide and is supplied STERILE. The device is designated and intended for SINGLE USE ONLY and must not be resterilized and/or reused. DO NOT resterilize or reuse this device, as these actions can compromise device performance or increase the risk of cross- contamination due to inappropriate reprocessing. Reuse of this single use device could lead to serious patient injury or death and voids manufacturer warranties. Store in a cool, dry place. Protect from direct sunlight and high temperatures (greater than 60°C or 140°F). The sterility of the product is guaranteed only if the package is unopened and undamaged. Prior to use, visually inspect the sterile package to ensure that the seals have not been broken. Do not use the catheter if the integrity of the package has been compromised. Do not use catheter product if its “Use Before Date,” found on package labeling, has passed. Before use, examine carefully all of the equipment to be used in the procedure for defects. Do not use any equipment if it is damaged. After use, dispose of all equipment in accordance with applicable specific requirements relating to hospital waste, and potentially biohazardous materials.

Read the Operator’s Manual (CVX-300®: 7030-0035 or 7030-0068, Philips Laser System: P018730) thoroughly before operating the laser system. Pay particular attention to the Warnings and Responsibility section of the manual which explains Notes, Cautions, and Warnings to be followed to ensure safe operation of the laser system. During the procedure, appropriate anticoagulant and coronary vasodilator therapy must be provided to the patient. Anticoagulant therapy should be administered per the institution’s PTCA protocol for a period of time to be determined by the physician after the procedure. When performing percutaneous Excimer Laser Coronary Atherectomy (ELCA), on-site surgical backup should be included as a clinical consideration. If on-site surgical backup is not provided, then an agreement with an alternative hospital should be in place, in advance of the procedure, where the patient could be transferred in an emergency situation. The results of clinical investigation indicated that patients with the following conditions are at a higher risk for experiencing acute complications:

• Patients with diabetes
• Patients with a history of smoking
• Lesions within tortuous vessels

Potential Adverse Events
Use of the Spectranetics CVX-300® Excimer Laser System or the Philips Laser system may contribute to the following complications:

• Dissection of the arterial wall
• Acute reclosure
• Aneurysm formation
• Coronary artery bypass graft surgery
• Myocardial infarction
• Filling defects
• Perforation
• Embolization
• Spasm
• Thrombus
• Arrhythmia
• Death

Clinical Studies

The ELCA Coronary Laser Atherectomy Catheters in these studies were used with the CVX-300® Excimer Laser System. The Philips Laser System provides the same output and operates at the same parameters as the CVX-300® Excimer Laser System; therefore, no new clinical data has been collected for ELCA with the Philips Laser System.

COMPARISON OF ELCA+PTCA TO PTCA ALONE IN RESTENOSED STENTS
The Laser Angioplasty of Restenosed Stents (LARS) randomized trial was initiated to compare ELCA+PTCA to PTCA alone in diffuse (10-40mm) in-stent restenosis. First instances of restenosis in a subset of commercially available stainless steel stents were treated, with the primary endpoint being absence of Major Adverse Cardiac Events (MACE) at 6 months. An interim analysis of acute results was undertaken to obtain data to support the indication of ELCA in stents prior to the administration of intravascular brachytherapy.

Following approval of the indication, LARS Trial recruitment was concluded after enrollment of 138 of the planned 320 patient study group. Sixty-six (66) patients were allocated to the excimer laser group and 72 patients were allocated to the balloon only control group. This cohort represents 43% of the planned study group. Due to the abbreviated study group and underpowered nature of the study analysis, statistical inferences cannot be finalized and accidental significance can occur.

Analysis:
Baseline characteristics of 138 LARS patients were similar between the two groups. Trends were observed toward a higher incidence of prior myocardial infarction in the PTCA group and diabetes in the ELCA group. Lesion characteristics and locations were also similar, with approximately 83% of lesions having 11 – 20 mm length. Procedural success was equivalent in both groups. Quantitative coronary angiography (QCA) did not reveal differences between groups in pre- and post-procedural lumen diameters. At 6-month follow- up, in a subgroup of 49 patients who received a 6-month angiographic restudy, prior to removal of the protocol requirement, there was a trend towards improved percent diameter stenosis and fewer late total occlusions in the control group. Similar procedural complications were observed in the two groups. In the PTCA-only group, there was a mild trend towards more balloon- induced dissection and stent damage in the form of stent strut distortion and changes in stent:vessel wall apposition. Adjudicated incidences of MACE were tabulated at hospital discharge, 30-day, 6- and 9-month follow-up intervals. There was a trend towards higher incidences of MACE in the ELCA group at each interval. This incidence was primarily driven by a higher rate of non-Q-wave myocardial infarction. In the ELCA group, two in-hospital deaths were observed, one secondary to renal failure and one secondary to chronic obstructive pulmonary disease (COPD).

Baseline Characteristics

Canadian Classification No angina

Class I Class II Class III

Class IV

| ****

2 (3.0%)

10 (15.2%)

13 (19.7%)

20 (30.3%)

21 (31.8%)

| ****

2 (2.8%)

12 (16.7%)

20 (27.8%)

18 (25.0%)

20 (27.8%)

| ****

0.820

Prior MI| 23 (43.4%)| 31 (55.4%)| 0.212
Prior CABG| 11 (20.8%)| 13 (23.6%)| 0.719

ELCA=excimer laser coronary angioplasty, PTCA=percutaneous transluminal coronary angioplasty, MI=myocardial infarction, CABG=coronary artery bypass grafts
Lesion Characteristics and Procedural Details

LAD=left anterior descending artery, LCX=left circumflex artery, RCA=right coronary artery, SVG=saphenous vein graft
† Procedural success defined as <50% stenosis without major in-hospital complications (death, myocardial infarction, or coronary artery bypass surgery).

Procedural Complications

Procedural Complications – Bail-out stenting

Quantitative Coronary Angiography and Late Total Occlusion

Baseline
No angina| 2 (3.0%)| 2 (2.8%)|
Class I| 10 (15.2%)| 12 (16.7%)|
Class II| 13 (19.7%)| 20 (27.8%)| 0.820
Class III| 20 (30.3%)| 18 (25.0%)|
Class IV| 21 (31.8%)| 20 (27.8%)|
Month 1
No angina| 32 (53.3%)| 42 (60.0%)|
Class I| 19 (31.7%)| 17 (24.3%)|
Class II| 3 (5.0%)| 5 (7.1%)| 0.819
Class III| 3 (5.0%)| 4 (5.7%)|
Class IV| 3 (5.0%)| 2 (2.9%)|
Month 6
No angina| 30 (52.6%)| 35 (58.3%)|
Class I| 11 (19.3%)| 15 (25.0%)|
Class II| 10 (17.5%)| 5 (8.3%)| 0.133
Class III| 5 (8.8%)| 1 (1.7%)|
Class IV| 1 (1.8%)| 4 (6.7%)|
Month 9
No angina| 35 (62.5%)| 34 (58.6%)|
Class I| 10 (17.9%)| 13 (22.4%)|
Class II| 7 (12.5%)| 6 (10.3%)| 0.964
Class III| 3 (5.4%)| 4 (6.9%)|
Class IV| 1 (1.8%)| 1 (1.7%)|

MLD=minimum lumen diameter
Angiographically documented total occlusion at the lesion site >30 days and within 6 months of the index procedure.

Anginal Functional Class

Through 6 Months:
Patients with Data| 60| 66|
CABG| 6 (9.7%)| 4 (5.9%)| 0.406
PCI| 15 (25.3%)| 9 (13.7%)| 0.082
Death| 2 (3.2%)| 1 (1.5%)| 0.491
Myocardial Infarction| 13 (19.7%)| 5 (6.9%)| 0.026
Non-Q-wave MI| 11 (16.6%)| 4 (5.5%)|
Target Vessel Revasc.| 18 (29.8%)| 13 (19.6%)| 0.151
MACE| 24 (38.1%)| 18 (26.5%)| 0.093
Through 9 Months:
Patients with Data:| 59| 65|
CABG| 6 (9.7%)| 5 (7.5%)| 0.615
PCI| 18 (30.7%)| 14 (22.0%)| 0.185
Death| 4 (6.6%)| 1 (1.5%)| 0.142
Myocardial Infarction| 13 (19.7%)| 6 (8.5%)| 0.050
Non-Q-wave MI| 11 (16.6%)| 5 (6.9%)|
Target Vessel Revasc.| 21 (35.2%)| 19 (29.6%)| 0.352
MACE| 28 (45.1%)| 25 (37.6%)| 0.198

CEC Adjudicated Clinical Endpoints through 30 Days

Investigator-Indicated Clinical Endpoints at Discharge

Culprit vessel
LAD| 8 (12%)| 19 (19%)| 0.559
LCX| 21 (31%)| 15 (15%)| 0.086
RCA| 19 (27%)| 26 (26%)| 0.999
SVG| 17 (25%)| 38 (38%)| 0.254
Type B2/C| 36 (52%)| 37 (37%)| 0.198
Lesion length mm| 24 ± 11| 25 ± 11.4| 0.568
Ref Vess Dia mm| 3.3 ± 0.6| 3.4 ± 0.9| 0.387
Dose (Gy)| 14.3 ± 0.7| 14.4 ± 0.5| 0.309
Proc. Success†| 69 (100%)| 100 (100%)| 1.000
Complications| 6 (9%)| 6 (6%)| 0.935
n=| 69| 100|

CEC Adjudicated Clinical Endpoints through 6 and 9 Months

Ref Dia mm
Pre| 2.9 ± 0.6| 2.7 ± 0.6| 0.146
Post| 2.9 ± 0.6| 2.8 ± 0.5| 0.434
F-Up| 2.9 ± 0.6| 3 ± 0.6| 0.466
MLD mm
Pre| 1.2 ± 0.5| 0.9 ± 0.6| 0.018
Post| 2 ± 0.5| 1.9 ± 0.5| 0.382
F-Up| 1.9 ± 0.9| 1.6 ± 0.9| 0.146
DS%
Pre| 57 ± 20| 66 ± 20| 0.051
Post| 30 ± 12| 33 ± 12| 0.275
F-Up| 36 ± 20| 46 ± 25| 0.052
Late Loss mm| 0.2 ± 0.7| 0.3 ± 0.8| 0.556
Loss index| 0.4 ± 1.4| 0.2 ± 0.8| 0.458
Binary Restenosis| 18 (53%)| 29 (64%)| 0.726
n=| 34| 45|

COMPARISON OF ELCA AND PTCA PRIOR TO BRACHYTHERAPY
The following data has been reported by the investigators participating in the Washington Radiation for In-Stent Restenosis Trial (WRIST). Patient data presented in the following tables were compiled from WRIST, Long WRIST (long in-stent restenosis lesions 36-80mm), the γ radiation registries including Long WRIST High Dose (long in-stent restenosis lesions 36-80mm using 18 Gy at 2mm), Plavix WRIST (6 months Clopidogrel therapy post coronary intervention and radiation), Compassionate WRIST (intracoronary localized radiation compassionate protocol for prevention of recurrence of restenosis) and WRIST X-over group (patients who initially failed placebo therapy and were subsequently treated with radiation). All WRIST studies were conducted under an IDE following patient informed consent and were independently monitored.
Analysis: To make a direct comparison of outcomes between PTCA and ELCA prior to Ir192 brachytherapy for in-stent restenosis, the data analysis was restricted to patients treated with PTCA+Ir192 and ELCA+Ir192. Comparisons between continuous variables were made with a 2-sided T-test and between dichotomous variables with a 2-sided continuity-corrected chi-squared test. A value of p<.05 was considered significant.
Baseline characteristics were similar between the two groups, with a trend toward more LCX lesions treated in the PTCA+Ir192 group, but no significant differences in lesion characteristics were evident.

30 days
MACE| 1 (1%)| 2 (2%)| 0.948
6 months
Death| 1 (1%)| 5 (5%)| 0.403
QMI| 0 (0%)| 2 (2%)| 0.514
NQMI| 9 (13%)| 18 (18%)| 0.515
TLR| 13 (19%)| 16 (16%)| 0.784
TVR| 23 (33%)| 25 (25%)| 0.314
PTCA| 21 (30%)| 22 (22%)| 0.290
CABG| 9 (13%)| 8 (8%)| 0.418
LTO| 6 (9%)| 1 (1%)| 0.019
MACE| 24 (35%)| 29 (29%)| 0.530
n=| 69| 100|

*PTCA = percutaneous transluminal coronary angioplasty, Ir = Iridium, ELCA = excimer laser coronary angioplasty, MACE = major adverse cardiac events (death, Q-wave MI or TVR), QMI = Q-wave myocardial infarction, NQMI = non-Q-wave MI, TLR = target lesion revascularization, TVR = target vessel revascularization, CABG = coronary artery bypass grafts, LTO = late total occlusion.
Death defined as all-cause mortality.QMI or NQMI defined as a total creatinine kinase elevation ≥2x normal value and/or elevated creatinine kinase MB fraction ≥20 ng/ml with or without new pathological q waves (>.04 sec) in two or more contiguous leads. TVR and TLR as characterized by repeat percutaneous intervention (PTCA) or CABG involving the treated vessel, driven clinical signs of ischemia in the presence of angiographic restenosis.
Late total occlusion defined as angiographically documented total occlusion at the lesion site>30 days and within 6 months of the index procedure.

Individualization of Treatment

The risks and benefits described above should be carefully considered for each patient before use of ELCA.Patient selection and clinical techniques should be conducted according to instructions provided in Section 2., “Indications for Use,” Section 7, “Clinical Studies,” and Section 12, “Directions for Use.”

References

1. Textbook of Interventional Cardiology. Topol, E.J. Editor, 4th Edition: 2003, Chapter 31 – Laser, Topaz, O., pp 675-703.
2. Excimer Laser Revascularisation: Current Indications, Applications and Techniques. Topaz, O., Lasers in Medical Science: 2001: Vol. 16, pp 72-77.
3. Effectiveness of Excimer Laser Coronary Angioplasty in Acute Myocardial Infarction or in Unstable Angina Pectoris. Topaz,
4. al. American Journal of Cardiology: Apr 1, 2001: Vol. 87, pp 849-855.
5. Application of Excimer Laser Angioplasty in Acute Myocardial Infarction. Topaz, O. et al, Lasers in Surgery and Medicine: 2001: Vol. 29, pp 185-192.
6. Rescue Excimer Laser Angioplasty in Patients with Acute Myocardial Infarction – The CARMEL Study. Topaz, O. et al.(manuscript on file and currently under review for publication)
7. Excimer Laser – Assisted Coronary Angioplasty for Lesions Containing Thrombus. Estella, P. et al. Journal of the American College of Cardiology: June 1993: Vol. 21: No. 7, pp 1550-1556.
8. Laser Angioplasty and Laser-Induced Thrombolysis in Revascularization of Anomalous Coronary Arteries. Shah, R. et al. Journal of Invasive Cardiology: 2002: Vol. 14, pp 180-186.
9. Laser-Facilitated Thrombectomy: A New Therapeutic Option for Treatment of Thrombus-Laden Lesions. Dahm, J. et al. Catheterization and Cardiovascular Interventions: 2002: Vol. 56, pp 365-372.
10. Comparison of Effectiveness of Excimer Laser Angioplasty in Patients with Acute Coronary Syndromes in Those With – versus – Those Without Normal Left Ventricular Function. Topaz, O. et al. American Journal of Cardiology: 2003: Vol. 91, pp 797- 802.

Operator’s Manual

The devices described in this document can be operated within the following energy ranges on the CVX-300® Excimer Laser System or the Philips Laser System:

Device Description| Model No.| Fluence| Repetition Rate| Laser On/Off Time (sec)
---|---|---|---|---
ELCA OTW Catheters
0.9 mm X-80| 110-002| 30 – 80| 25 – 80| 10 / 5
ELCA RX Catheters
0.9 mm X-80| 110-004| 30 – 80| 25 – 80| 10 / 5

Inspection Prior to Use
Before use, visually inspect the sterile package to ensure that seals have not been broken. All equipment to be used for the procedure, including the catheter, should be examined carefully for defects. Examine the laser catheter for bends, kinks or other damage. Do not use if it is damaged.

Compatibility

The Spectranetics excimer laser catheter is designed and intended to be used exclusively with the Spectranetics CVX-300® Excimer Laser System or the Philips Laser System.

Do not use in combination with any other laser system. Guidewire Compatibility See Catheter Specification Table in Section 1.

Directions for Use

Procedure Set-Up
Some or all of the following additional materials, which are not included in the laser catheter package, may be required for the procedure (these are single use items only—do not resterilize or reuse):

• Femoral guiding catheter(s) in the appropriate size and configuration to select the coronary artery
• Hemostatic valve(s)
• Sterile normal saline
• Standard contrast media
• 0.014” guidewires

Turn on the laser unit. For the CVX-300®, verify that the number 38 is displayed on the panel at start up. This ensures the proper software version, 3.8, is installed on the CVX-300®.

CAUTION: If 38 is not displayed at start up for the CVX-300®, do NOT use catheter and contact Spectranetics Field Service immediately. Using sterile technique, open the sterile package. Remove the packaging wedges from the tray and gently lift the laser catheter from the tray while supporting the black laser connector, also known as the proximal end, proximal coupler, or proximal connector. Please note that the proximal end of the laser catheter connects only to the laser system, and is not meant to have any patient contact. Connect the proximal end of the laser catheter to the laser system, and position the laser catheter in the laser system extension pole or catheter retainer. Calibrate the laser catheter following the instructions provided in the CVX-300® Excimer Laser System; Operator’s Manual (7030-0035 or 7030-0068) or the Philips Laser System Operator’s Manual (P018730).

Clinical Technique

1. Use standard Percutaneous Seldinger Technique to insert an appropriate size introducer to accommodate the guiding catheter, into the common femoral artery in a retrograde fashion. Heparinize intravenously using the PTCA protocol for heparinization. Periodic measurement of activated clotting time (ACT greater than 300 seconds) during the procedure will assist in maintaining optimum anticoagulation levels.
2. Introduce an appropriately sized guide catheter using the information provided in Table 1.1 or 1.2 (left or right depending on the target coronary artery) using a standard 0.038” guidewire.
3. Perform baseline angiography by injecting contrast medium through the guiding catheter. Obtain images in multiple projections, delineating anatomical variations and morphology of the lesion(s) to be treated.
4. Introduce a 0.014” (or smaller) guidewire to the coronary arteries via the guiding catheter. Cross the target lesion with the guidewire.
5. Size the laser catheter appropriately:
6. Inject 5-10cc of heparinized saline or Lactated Ringer’s solution through the laser catheter to flush the guidewire lumen. Attach a rotating hemostatic valve to the guidewire port into the guidewire lumen (See Figure 3). Introduce the distal tip of the Spectranetics laser catheter over the selected guidewire. Under fluoroscopic control, guide the laser catheter to the lesion. The laser catheter’s radiopaque band marker indicates its position relative to the lesion.
7. Insertion techniques (Bare Wiring)
8. Monitor the guidewire position within the vasculature under fluoroscopy.
9. Insert the guidewire into the laser catheter by introducing the proximal end of the guidewire into the distal tip of the laser catheter, and carefully advance the laser catheter, in small increments, to avoid kinking the guidewire. Grasp the guidewire as it exits the proximal guidewire port and maintain its position in the patient’s circulatory system while advancing the laser catheter.
10. Loosen the hemostatic valve of the y-adapter being used in conjunction with the introducer inserted during step 1 above.
11. Carefully insert the laser catheter through the hemostatic valve of the y-adapter into the guide catheter and advance the laser catheter to the guide catheter distal tip while maintaining the guidewire position.
12. Reconfirm the guide catheter position in the ostium of the coronary artery with contrast media injection and fluoroscopy prior to advancing the laser catheter.
13. Advance the laser catheter to the lesion site while maintaining the guidewire position in the patient’s circulatory system. Inject contrast medium solution through the guiding catheter to verify the positioning of the laser catheter under fluoroscopy.
14. Following confirmation of the laser catheter’s position in contact with the target lesion and using normal saline or Lactated Ringer’s solution:
15. Flush all residual contrast media from the guide catheter and in-line connectors.
16. Flush all residual contrast media from the lasing site and vascular structures adjacent to the lasing site, prior to activating the laser system.
17. Please refer to the Saline Infusion Protocol and perform saline flush and infusion per the instructions.
18. Depress the footswitch, activating the laser system, and slowly, less than 1 mm per second, advance the laser catheter allowing the laser energy to remove the desired material. Release the footswitch to deactivate the laser system.
19. Following laser atherectomy, perform follow-up angiography and balloon angioplasty, if needed.
20. The Rapid Exchange laser catheter has been specifically designed for compatibility with rapid device exchanges as needed during a single interventional surgery, done by the same surgical team. The Rapid Exchange laser catheter may be quickly removed from the patient’s circulatory system, without removing the guidewire, as outlined below.
21. Loosen the hemostatic valve.
22. Hold the guidewire and hemostatic valve in one hand, while grasping the laser catheter outer surface in the other hand.
23. Maintain the guidewire’s position in the coronary artery by holding the guidewire stationary, and begin pulling the laser catheter out of the guiding catheter.
24. Pull on the laser catheter withdrawing it until the opening in the guidewire lumen just exits the Y-adapter. Carefully and slowly withdraw the last 9 cm of the flexible, distal portion of the laser catheter off the guidewire while maintaining the guidewire’s position across the lesion. Close the hemostatic valve.
25. Prepare the next laser catheter to be used, as previously described.
26. Again, insert the guidewire into the laser catheter by introducing the proximal end of the guidewire into the distal tip of the laser catheter. The proximal portion of the guidewire, that will be handled by the physician, will exit at the opening 9 cm from the distal tip.
27. Open the hemostatic valve and advance the laser catheter while maintaining guidewire position in the coronary artery. Be careful not to twist the laser catheter around the guidewire.
28. Advance the laser catheter to the guiding catheter tip. Continue the laser angioplasty procedure, using the previously described method.
29. Recommended pharmacology follow-up to be prescribed by the physician.
30. Before the laser procedure, warm a 500cc bag of 0.9% normal saline (NaCl) or lactated Ringer’s solution to 37°C. It is not necessary to add heparin or potassium to the saline solution. Connect the bag of warmed saline to a sterile intravenous line and terminate the line at a port on a triple manifold.
31. Cannulate the ostium of the coronary artery or bypass graft with an appropriate “large lumen” guide catheter in the usual fashion. It is recommended that the guide catheter not have side holes.
32.  Under fluoroscopic guidance, advance the laser catheter into contact with the lesion. If necessary, inject contrast to help position the tip of the laser catheter. If contrast appears to have become entrapped between the laser catheter tip and the lesion, the laser catheter may be retracted slightly (1-2 mm) to allow antegrade flow and contrast removal while flushing the system with saline. (However, before lasing, ensure that the laser catheter tip is in contact with the lesion.)
33. Expel any residual contrast from the control syringe back into the contrast bottle. Clear the triple manifold of contrast by drawing up saline through the manifold into the control syringe.
34. Remove the original control syringe from the manifold and replace it with a fresh 20cc luer-lock control syringe. This new 20cc control syringe should be primed with saline prior to connection to reduce the chance for introducing air bubbles. (Merit Medical and other vendors manufacture 20cc control syringes.)
35. Flush all traces of blood and contrast from the manifold, connector tubing, y-connector, and guide catheter, with at least 20-30cc of saline (several syringes of saline). When this initial flushing is completed, refill the 20cc control syringe with saline.
36. Under fluoroscopy, confirm that the tip of the laser catheter is in contact with the lesion (advance the laser catheter if necessary), but do not inject contrast.
37. When the primary operator indicates that he/she is ready to activate the laser system, the scrub assistant should turn the manifold stopcock off to pressure and inject 10cc of saline as rapidly as possible (within 1-2 seconds). This bolus injection is to displace and/or dilute blood in the coronary tree down to the level of the capillaries and limit back-bleeding of blood into the laser ablation field.
38. Before the laser procedure, warm a 500cc bag of 0.9% normal saline (NaCl) or lactated Ringer’s solution to 37°C. It is not necessary to add heparin or potassium to the saline solution. Connect the bag of warmed saline to a sterile intravenous line and terminate the line at a port on a triple manifold.
39. Cannulate the ostium of the coronary artery or bypass graft with an appropriate “large lumen” guide catheter in the usual fashion. It is recommended that the guide catheter not have side holes.
40. Under fluoroscopic guidance, advance the laser catheter into contact with the lesion. If necessary, inject contrast to help position the tip of the laser catheter. If contrast appears to have become entrapped between the laser catheter tip and the lesion, the laser catheter may be retracted slightly (1-2 mm) to allow antegrade flow and contrast removal while flushing the system with saline. (However, before lasing, ensure that the laser catheter tip is in contact with the lesion.)
41. Expel any residual contrast from the control syringe back into the contrast bottle. Clear the triple manifold of contrast by drawing up saline through the manifold into the control syringe.
42. emove the original control syringe from the manifold and replace it with a fresh 20cc luer-lock control syringe. This new 20cc control syringe should be primed with saline prior to connection to reduce the chance for introducing air bubbles. (Merit Medical and other vendors manufacture 20cc control syringes.)
43. Flush all traces of blood and contrast from the manifold, connector tubing, y-connector, and guide catheter, with at least 20-30cc of saline (several syringes of saline). When this initial flushing is completed, refill the 20cc control syringe with saline.
44. nder fluoroscopy, confirm that the tip of the laser catheter is in contact with the lesion (advance the laser catheter if necessary), but do not inject contrast.
45. When the primary operator indicates that he/she is ready to activate the laser system, the scrub assistant should turn the manifold stopcock off to pressure and inject 10cc of saline as rapidly as possible (within 1-2 seconds). This bolus injection is to displace and/or dilute blood in the coronary tree down to the level of the capillaries and limit back-bleeding of blood into the laser ablation field.

Manufacturer’s Information

Manufacturer warrants that the ELCA Coronary Laser Atherectomy Catheter is free from defects in material and workmanship when used by the stated “Use By” date. Manufacturer’s liability under this warranty is limited to replacement or refund of the purchase price of any defective unit of the ELCA Coronary Laser Atherectomy Catheter. Manufacturer will not be liable for any incidental, special, or consequential damages resulting from use of the ELCA Coronary Laser Atherectomy Catheter. Damage to the ELCA Coronary Laser Atherectomy Catheter caused by misuse, alteration, improper storage or handling, or any other failure to follow these Instructions for Use will void this limited warranty. THIS LIMITED WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. No person or entity, including any authorized representative or reseller of Manufacturer, has the authority to extend or expand this limited warranty and any purported attempt to do so will not be enforceable against the Manufacturer. This limited warranty covers only the ELCA Coronary Laser Atherectomy Catheter. Information on Manufacturer’s warranty relating to the CVX-300® Excimer Laser System or Philips Laser System can be found in the documentation relating to that system.

www.spectranetics.com
Manufactured by Spectranetics Corporation 9965 Federal Drive, Colorado Springs CO 80921 USA Tel: 1-800-231-0978 · Fax: 719-447-2022

References

• Spectranetics | Philips

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