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EP-4502989-B1 - CONDUCTIVE RESIN COMPOSITION-METAL LAMINATE

EP4502989B1EP 4502989 B1EP4502989 B1EP 4502989B1EP-4502989-B1

Inventors

  • FUKUDA, YUKO

Dates

Publication Date
20260506
Application Date
20230301

Claims (9)

  1. A medical technique practice organ model (5) comprising a conductive resin composition-metal laminate (1) comprising: a substrate layer (2) formed from a conductive resin composition containing a styrene-based thermoplastic elastomer; and a metal layer (4) laminated on one surface of the substrate layer (2) via an adhesive agent layer (3).
  2. The organ model (5) according to claim 1, wherein the conductive resin composition-metal laminate (1) has a volume resistivity of 1.0×10 2 to 1.0×10 7 Ω·cm.
  3. The organ model (5) according to claim 1 or 2, wherein the adhesive agent layer (3) contains one or more adhesive agents selected from the group consisting of epoxy-based adhesive agents, olefin-based adhesive agents, cyanoacrylate-based adhesive agents, urethane-based adhesive agents, and silicone-based adhesive agents.
  4. The organ model (5) according to any one of claims 1 to 3, connected to a counter electrode plate.
  5. The organ model (5) according to claim 1 or 2, wherein the medical technique practice uses an energy device.
  6. The organ model (5) according to claim 5, wherein the energy device is any device selected from the group consisting of a high-frequency hemostatic forceps, an electroscalpel, an ultrasonic scalpel, and a high-frequency radioscalpel.
  7. The organ model (5) according to claim 1 or 2, comprising a simulated blood vessel connected to a device that can supply simulated blood.
  8. The organ model (5) according to claim 1 or 2, wherein the medical technique practice is a practice of endoscopic hemostasis.
  9. The organ model (5) according to claim 8, wherein the practice of endoscopic hemostasis is a practice of hemostasis by thermocoagulation using an energy device.

Description

TECHNICAL FIELD The present invention relates to conductive resin composition-metal laminates and organ models using the same. BACKGROUND Recently, expectations have increased for minimally invasive surgery, for example, surgery using an endoscope or a laparoscope, which has a low burden on the human body and from which early recovery can be expected, and the number of such cases has increased. For example, endoscopic removal of tumors formed in the submucosa inside an organ (endoscopic submucosal dissection) allows surgery to be performed with smaller wounds compared with conventional laparotomy. For example, by stopping hemorrhaging in the digestive tract endoscopically (endoscopic hemostasis), shock due to hemorrhaging is prevented and emergency surgery can be avoided. Therefore, the physical burden for the patient is reduced and early social reintegration due to the short hospitalization period is expected. Due thereto, there is increasing demand from doctors and medical students for technique practice models corresponding to surgery using endoscopes or laparoscopes. Hitherto, medical technique practice models for improving techniques and improving the quality of medical practice have been proposed (Patent Documents 1, 2, and 3). Further, there has been an increasing number of cases where surgical energy devices are used as the instruments utilized. Patent Document 1: JP 2006-116206 APatent Document 2: JP 2008-197483 APatent Document 3: JP 2015-085017 A Further the disclosures of JP 2020 159554 A and JP 2019 065080 A may be helpful for understanding the present invention. JP 2020 159554 A refers to an anti-squeal shim, which includes at least a first metal layer and an elastomer layer that is bonded to the first metal layer. The at least first metal layer is configured as a first electrode for electrical connection to a resistance measuring system, and the elastomer layer is configured with structural spatial features that enable the elastomer layer to obtain a reduced thickness when subjected to a mechanical force in a direction perpendicular to the elastomer layer. JP 2020 159554 A refers to a conductive resin composition and an organ model used by a doctor or a medical student to practice a surgical procedure using an endoscope or a laparoscope. SUMMARY OF THE INVENTION When a counter electrode plate is attached to skin, for example, an adhesive gel in which an electrolyte has been dispersed in polyacrylic acid or the like is used. However, with regard to conventional medical technique practice models, counter electrode plates cannot be connected with sufficient strength and there have been cases of counter electrode plates readily peeling off when instruments such as energy devices or laparoscopes contact a medical technique practice model. Thus, there is a need for organ models onto which a counter electrode plate can be affixed with a certain strength or greater and which can be used in medical technique practice using an energy device. The present invention addresses the problem of providing a conductive resin composition-metal laminate and an organ model onto which a counter electrode plate can be affixed with a certain strength or greater and which can be used in medical technique practice using an energy device. As a result of investigating various means, the present inventor found that, by laminating a metal layer on a substrate layer formed from a conductive resin composition containing a styrene-based thermoplastic elastomer via an adhesive agent layer, it becomes possible to affix a counter electrode plate with a certain strength or greater and to use the laminate in medical technique practice using an energy device, completing the present invention. The present invention relates to a medical technique practice organ model according to claim 1. Advantageous embodiments may include features of depending claims. Thus, the invention refers to the following. (1) A medical technique practice organ model comprising a conductive resin composition-metal laminate comprising: a substrate layer formed from a conductive resin composition containing a styrene-based thermoplastic elastomer; and a metal layer laminated on one surface of the substrate layer via an adhesive agent layer.(2) The medical technique practice organ model described in (1), wherein the conductive resin composition-metal laminate has a volume resistivity of 1.0×102 to 1.0×107 Ω·cm.(3) The medical technique practice organ model described in (1) or (2), wherein the adhesive agent layer contains one or more adhesive agents selected from the group consisting of epoxy-based adhesive agents, olefin-based adhesive agents, cyanoacrylate-based adhesive agents, urethane-based adhesive agents, and silicone-based adhesive agents.(4) The medical technique practice organ model described in any of (1) to (3) connected to a counter electrode plate.(5) The organ model described in (1) or (2), wherein the medical technique practice uses an energy de