Reprocessing of Single-Use Medical Devices: Clinical and Financial Results

Reprocessamento de Dispositivos Médicos de Uso Único: Resultados Clínicos e Financeiros

Bruno de Sousa Martins ^a   João Queiroz e Melo ^b João Logarinho Monteiro  ^c Graça Rente ^d Pedro Teixeira Bastos  ^d

^a Escola de Saúde do Porto, Associação de Politécnicos do Norte, Porto, Portugal

^b Ecotlon – Economia na Saúde, Lisboa, Portugal

^c Associação Portuguesa de Administradores Hospitalares, Lisboa, Portugal

^d Hospital de São João, Centro Hospitalar de São João, Porto, Portugal 

ABSTRACT

Introduction: Excellent results regarding clinical efficacy and cost reduction are achieved by using certified reprocessed Single-Use medical devices (SUMDs). This explains why this practice is common in most hospitals across the USA and Germany. However, this is not a common practice at a national level and there are no reports regarding its use in Portugal. We present our experience using these methods at Centro Hospitalar de São João (CHSJ) in Porto. Objective: The aim of this study was to compare the clinical results and the financial impact of the use of 2 SUMDs, original and reprocessed, namely the linear suture machine GIA Covidien^TM and Harmonic ACE® scissors. Method: A group of 733 patients operated in 2014 was evaluated. Of these patients, 316 were operated on with reprocessed SUMDs and 417 with original SUMDs. Variables referring to the clinical and financial results were analyzed through clinical and management information provided by Unidade de Gestão Autónoma de Cirurgia. A comparison between groups was performed using the χ² test and the MannWhitney test. Results: Indicators related to clinical efficacy show that the use of these SUMDs, professionally reprocessed, did not represent any added risk in comparison to the use of original devices. Regarding costs, there is a very significant difference between the use of a new medical device and that of a reprocessed one. In the case of the Harmonic ACE® scissors and of the linear suture machine GIA Covidien^TM, savings were up to 50% per device. Conclusion: This study, the first in Portugal, confirms the economic advantages of reprocessing these 2 devices. The financial benefit was obtained with maintenance of the same clinical results as the ones achieved using original devices. These results are in line with the published literature, proving the validity of using SUMDs after professionally certified reprocessing.

RESUMO

Introdução: Os excelentes resultados da eficácia clínica e da redução de custos, obtidos com o reprocessamento certificado dos Dispositivos Médicos de Uso Único (DMUU) justificam que seja prática corrente na maior parte dos hospitais, nos Estados Unidos da América e na Alemanha. No entanto, a nível Nacional ainda não é prática comum, não existindo bibliografia sobre a experiência nacional. Apresentamos os resultados obtidos com esta prática no Centro Hospitalar de São João (CHSJ), Porto. Objetivo: Comparar os resultados clínicos e o impacto financeiro da reutilização de dispositivos médicos de uso único, reprocessados profissionalmente. Foram utilizados dois dispositivos de “uso único,” a máquina de sutura linear GIA CovidienTM e a tesoura Harmonic ACE®. Método: Analisamos um grupo de 733 doentes operados em 2014 que inclui todos os doentes operados no referido período e em que foram utilizados estes dispositivos. Destes doentes 316 foram operados com DMUU reprocessados, e 417 com DMUU originais. As variáveis referentes aos resultados clínicos e financeiros foram analisadas através dos respetivos registos clínicos e da informação de gestão fornecida pela Unidade de Gestão Autónoma de Cirurgia. A comparação entre grupos foi realizada pela aplicação dos testes de Quiquadrado e MannWhitney. Resultados: Os indicadores relativos à eficácia clínica, comprovaram que o uso destes DMUU reprocessados profissionalmente utilizados nas intervenções cirúrgicas não representou qualquer risco acrescido em comparação com os dispositivos originais. Em termos financeiros, há uma diferença muito significativa entre a aquisição de um dispositivo médico novo ou reprocessado. A diferença no caso da tesoura Harmonic ACE® e na máquina de sutura linear GIA CovidienTM acarretou poupanças cerca de 50%. Conclusão: Este primeiro estudo, realizado em Portugal, confirma as vantagens económicas do reprocessamento destes dois dispositivos. O benefício financeiro foi obtido com manutenção da mesma qualidade clínica que se obteve com os dispositivos originais. Os resultados obtidos estão em conformidade com os publicados na literatura, o que confirma que a utilização de alguns dispositivos médicos de uso único após reprocessamento profissional é um método eficiente.

Palavras-chave: Reprocessamento certificado · Reutilização · Dispositivo médico de uso único · Eficiência clínica · Redução de custos

Introduction

For many years, healthcare units have been facing significant challenges regarding the ideal management of financial resources. New sustainability solutions cannot put at risk the safety of the patients, allowing professionals the use of appropriate resources to provide proper care. Within these boundaries, the use of certified professionally reprocessed Single-Use medical devices (SUMDs) is considered (¹ , ² ).

In Portugal, SUMDs are defined according to the law decree number 145/2009 from the 17th of June (article 3, item r) as “(...) a device used for a single time on a single patient” ³. Reprocessing is a certified procedure that allows that some SUMDs can be used again after their first usage. European and national legislation (⁴, ⁵, ⁶ ) support this approach. This approach implies rigorous cleaning procedures, disinfection, and sterilization, as well as tests and the restoration of technical and functional safety of the used device (⁷ , ⁸ ).

This practice was initiated in the USA around 20 years ago and in the last 15 years in Germany ¹. The excellent results regarding cost reduction and clinical efficiency promote it as an example of good clinical practice and reinforce that some SUMDs, after adequate professional handling, may be used again, especially in the areas of cardiology and electrophysiology, ophthalmology, endoscopy, and laparoscopy ⁸.

Since 2012, Centro Hospitalar de São João (CHSJ) has been using 2 reprocessed SUMDs (linear suture machine GIA Covidien ^TM and the Harmonic ACE® scissors), reprocessed by a certified reprocessor duly accredited ⁹. Two studies evaluated the safety and performance of reprocessed Harmonic ACE® scissors as compared to new ones. In the first study, scenarios were developed in which the reprocessed device was subject to contamination (storage, transportation, and cleaning) followed by a 2year accelerated aging process. No signs of visible contamination were detected, with insignificant levels of protein and hemoglobin ¹⁰. In the second study, performance was compared assessing in vivo dissection characteristics and postcut shaft temperatures in Harmonic ACE® scissors and its counterpart ¹¹. In both studies, it was verified that the performance and safety of reprocessed Harmonic ACE® scissors are equivalent to the original (¹⁰ , ¹¹ ).

The objective of our study was to evaluate the clinical and financial consequences of the use of certified reprocessed SUMDs.

Materials and Methods

Information was provided by the Unidade Autónoma de Gestão de Cirurgia do CHSJ. Data collection was done using the management reports from the CHSJ in 2014 and the grouping of encrypted diagnosisrelated groups (DRGs).

The populations under study are described using their demographic characteristics. Clinical efficacy is described by data on duration of surgical intervention, postoperative infection incidence, antibiotic consumption (using the daily dose defined (DDD)), reoperations, length of hospital stay, inhospital mortality, and rehospitalization rate (complications 30 days after surgical intervention). Cost analysis was based on the cost difference between the acquisition of unique SUMDs as compared to the costs of these SUMDs professionally reprocessed.

Statistical Analysis

A comparison between the groups regarding clinical effectiveness was performed using the χ ² test to verify if there were significant differences between categorical variables. The MannWhitney test was used to analyze the significant differences between numerical variables. A p value of < 0.05 was considered statistically significant. For the cost analysis, the comparison between groups was based on the cost of purchasing SUMDs from the manufacturer compared to the costs of the reprocessing of the same SUMDs. Acquisition of refills for the linear suture machine GIA Covidien ^TM was also considered in the analysis.

Sample

Surgical interventions were identified for each DRG in which SUMDs were used, regardless of those devices being original or reprocessed. Two groups were defined. Patients either operated on with original medical devices (nonreprocessed (NR) group) or with reprocessed medical devices (R group). A total of 733 surgical interventions were analyzed, during which 316 patients were treated with reprocessed SUMDs and 417 with nonreprocessed SUMDs.

The DRGs, referring to the surgical interventions analyzed, are shown in Table 1.

Results

The mean age in the R group was 56.7 ± 17.3 years and in the NR group 56.6 ± 16.7 years. In both groups, females were predominant (Table 2).

The postoperative infection rate was on average 12.9%, being 12.3% for the R group and 13.4% for the NR group. There was a wide range of differences in the rate of postoperative infections in each DRG group, depending on the type of surgery and the severity of the preoperative condition. Still, there were no differences between the 2 groups (p = 0.664).

Table 3 describes the consumption of antibiotics (as DDD), length of hospital stay, time of surgery, readmission rate, and inhospital mortality. A comparison of the consumption of antibiotics (DDD) between the R and NR groups and for all DRG subgroups showed no significant differences (p = 0.319).

The duration of the surgical intervention was on average 2 h and 23 min (p = 0.161), and length of hospital stay was approximately 10 days in both groups (p = 0.881). Rehospitalization was required for 28 patients in the R group and for 33 patients in the NR group (p = 0.678).

Hospital mortality in the R group was 1.90%, resulting in 6 deaths, and it was 2.88% (12 deaths) in interventions in which new devices were used (NR group). Mortality was different in patients in DRGs 148 and 585. These interventions were mostly lifesaving procedures in extremely sick patients, with 11–36 patients having a secondary diagnosis, including cardiogenic shock and renal failure. The reasons for death were not related to the use of either reprocessed or nonreprocessed devices. There were no reoperations in either groups.

Data in Table 4 show the costs of purchasing new devices as compared to the reprocessing costs of these SUMDs after use. Acquisition costs were obtained by the manufacturer company catalog that supplies the SUMDs to the CHSJ. Values for reprocessing were established between the CHSJ and the reprocessing company by protocol. The reprocessing costs of the devices include the evaluation and validation of the entire 7step reprocessing cycle, from collection to delivery back to the hospital, with no additional costs.

The acquisition costs of the new Harmonic ACE® scissors and those of reprocessed ones differed by 52% per device. In the case of the linear suture machine GIA Covidien ^TM , the difference was less, due to the need to buy additional original staple cartridges.

Table 5 shows the total of devices used as well as the costs with each of the options for the year 2014. Savings in Table 5 were calculated based on the difference between buying all SUMDs new without reprocessing and purchasing/reprocessing the SUMDs by the CHSJ. A total of 193 linear suturing machines GIA Covidien ^TM were reprocessed, saving EUR 14,623.61. These devices use staples that need to be originals and must be purchased separately. In each procedure, an average of 2 new cartridges was used. For this study, the value of EUR 7.5 was used for each recharge, corresponding to an expense of EUR 2,895. Of the Harmonic ACE® scissors, 285 were reprocessed, corresponding to savings of EUR 75,932.55.

Discussion

Several authors have documented a cost reduction of around 50% due to the use of reprocessed SUMDs (¹², ¹³, ¹⁴, ¹⁵ ). Because of the strict requirements for a correct reprocessing, many hospitals use certified thirdparty outside bodies to reprocess their devices (^{16 19} ). In addition to the economic advantages, reprocessing is now considered as one of the most efficient measures for hospitals to immediately reduce some of their negative environmental impact (²⁰ , ²¹ ). Approximately 10 million medical devices have been reprocessed in the German market with strict quality standards for reprocessing approved by the national regulatory boards, and there were no complaints concerning this activity ¹⁶.

There were no significant differences between the use of new and reprocessed devices regarding the incidence of rehospitalization and hospital mortality. The analysis by DRG subgroups showed a difference in mortality in DRGs 148 and 585. Out of the 18 patients who died in these 2 groups, 6 were operated on using reprocessed devices and the other 12 using original devices. It has to be emphasized that these DRGs refer to pathologies of the gastrointestinal system in patients who, at the time of surgery, already suffered from established severe complications, such as sepsis, severe bleeding, pulmonary embolism, and shock. The reason for death was not related to the use of the devices in any case. There was no need for reoperations in either group.

As a result, no increased risk was revealed with regard to the use of reprocessed SUMDs compared to the use of original SUMDs, and, therefore, reprocessed SUMDs do not compromise patient safety. Our experience shows that the concerns pronounced by several entities, which point out eventual risks associated with patient safety as an argument for not using reprocessed SUMDs, are not justified, and it confirms published data about the safety of using properly reprocessed SUMDs (¹⁶ , ¹⁷, ¹⁸ , ²² ).

With regard to the economic analysis indicators, there is a huge difference between the cost of acquiring a new SUMD and a reprocessed device, and this difference in the case of the Harmonic ACE® scissors and the linear suture machine GIA Covidien ^TM comprises a saving around 50% per device, confirming the results obtained in international studies (¹⁵ , ¹⁶ , ²³ , ²⁴ ). This practice allowed for a yearly saving of EUR 90,556.16 just for the 2 devices.

Each medical device analyzed here can be reprocessed up to 2 times, which means that each new medical device purchased can be used 2 more times after professional treatment. To perform a fourth surgery, a new medical device needs to be purchased. A total of 596 new devices were purchased; 478 went through 1 reprocessing cycle, so by the year 2014 the stock of new devices was sufficient.

Our data are consistent with the fact that the certified reprocessing process requires a rigorous inspection, obeying demanding criteria and guidelines specific to each device. These stringent criteria allow the detection of any type of anomaly, which is not the case in original medical devices whose quality control is done by sampling (¹⁹ , ²⁵ , ²⁶ ).

It is important to emphasize that not all SUMDs are reprocessable. Before they are accepted for clinical use, the methods of reprocessing, specific for each device, are validated and approved by the regulatory agencies, as was done with the devices our hospital had chosen to use ¹⁹.

Over the years, CHSJ has increased the use of reprocessed SUMDs. If this growth continues, it is expected that the optimum number of uses of these 2 devices can be reached. This approach allows a better use of resources, leading to an improvement in hospital sustainability.

Conclusion

Financially, the economic benefits of reprocessing are evident, contributing to fostering a culture of economic sustainability of hospitals by reducing costs while maintaining quality of care. We conclude that certified reprocessing of SUMDs has proved to be a safe and effective process, leading to better hospital sustainability.

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Received: January 24, 2018. Accepted: June 5, 2018