CS243017B1 - Method of manufacturing a stimulator contact system - Google Patents

Abstract

The solution concerns a method of manufacturing a contact system of a stimulator using a transparent mold, which is placed on the stimulator body, sealed with glue and fixed with a frame. The electronic circuit is stabilized using pins. The mold is filled with medical resin through the filling hole and cured in two stages. First at a temperature of 20 °C for 18 hours and second at a temperature of 45 °C for 24 hours. After curing, the mold is cut and torn off.

Description

The invention relates to the manufacture of a pacemaker contact system.

The prior art process of manufacturing the contact system is carried out in molds made of polymethyl methacrylate (organic glass) or dentacryl. These molds are machined, ground and polished.

After several use, they must be polished and polished. The manufactured forms before use are separated by silicone oil or a mixture of silicone oil and paraffin.

A contact system and a resin with a special resin are placed in the molds thus prepared.

After removal from the mold, the cast is machined, polished and adhered to the stimulator body. The contact system is then welded with the electronic part of the stimulator. The welding process hole is then subsequently grinded with resin and the surface is regrinded and polished.

The disadvantage of this method is the considerable labor and complexity of manufacturing the contact system. In this way, too, the perfect appearance cannot be achieved. The cured resin itself is removed from the molds by impacting the mold (by tapping) on the work table to peel off the casting.

Impacts constitute a major technological drawback of the manufacturing method given the sensitivity of the apparatus.

The disadvantages of this process are eliminated by the process according to the invention, which is characterized in that the mold for the contact system is produced by vacuum forming from clear material and is intended for single use.

The contact cube is connected to the electronic circuit of the pacemaker before encapsulating the resin, allowing for perfect joint control. The attached contact bar is stabilized by means of spines separated by silicone oil onto which the shaped mold is threaded.

The bottom of the mold is placed on the stimulator body, fixed with a frame and sealed with glue. The mold stimulator thus treated is fixed by the inserted mandrel in the work stand, through the pouring hole the mold with the contact cube is wound with a medicinal resin. After curing and demoulding, the surface is polished and cleaned.

The advantage of this method of manufacturing the contact system is that it is possible to embed the resin only after it is connected to the electronic circuit of the stimulator, which allows perfect control of the connection.

The procedure also ensures perfect bonding of the resin to the stimulator body.

The labor demand is substantially reduced and the demanding mold production is eliminated. The transparent mold mass is vacuum molded, allowing continuous control of the molded resin and the possible removal of air bubbles.

An important advantage is that the mold can be easily removed without tapping the pacemaker, thereby eliminating the necessary shocks previously avoided in pacemakers.

Eliminating impacts from the workflow will eliminate the possibility of breaking electronic connections and prevent potential damage to electronic components.

In the manufacture of the pacemaker contact system, a vacuum-formed mold 6 is placed on the degreased edge of the stimulator body A, into which a silicon vaseline-separated mandrel 4 is inserted and inserted into the contact bar 6.

The contact bar is stabilized by screwing on the mandrel. The mold 5 is sealed with MATADOR glue after alignment and is fastened by sliding the clamping frame 8. The contact system was poured with CHS 11OH resin for 5-6 minutes at a temperature of 20 ° C and a relative humidity of 30%. In the first stage, the resin is cured at 20 ° C for 18 hours and in the second stage at 45 ° C for 24 hours. After curing, the mold is cut, removed and the stimulator cleaned.

Claims (1)

SUBJECT OF THE INVENTION Method for manufacturing a stimulator contact system, characterized in that a mold is placed on the body of the stimulator, sealed with glue and fixed by a frame and stabilized by mandrels, and the mold is filled with a molding resin at 20 ° C and a relative humidity of 30%. phase at a temperature of 20 ° C for 18 hours and in a second phase at 45 ° C for 24 hours.