An Insertion Tube Endoscope
An insertion tube endoscope is an endoscopic tool used in gastroenterology. It has a proximal end and a distal end.
The insertion tube is critical for the ease with which an endoscopist inserts the instrument into the body cavity. Therefore, the tube must have the ideal balance of flexibility, elasticity, column strength, and torquing ability.
The proximal end of the insertion tube is made of hard resin
The proximal end of the insertion tube is one of the major differences among endoscopes, and is an essential feature for an endoscope that is intended for use in gastrointestinal (GI) surgery. The insertion tube’s properties are what determine the ease with which it can be inserted and the speed at which it can be maneuvered around a body cavity during the examination process.
The length of the insertion tube is relatively long, and the tube’s structure is designed to be flexible over the entire length. This flexibility allows the tube to bend inside the body cavity and aim at a desired direction.
In order to achieve this flexibility, the proximal end of the insertion section is made of hard resin. This material is harder than soft resin, which helps to ensure that the proximal end of the inserted tube will not deform when it is used for a prolonged period of time in a body cavity.
To make sure that the proximal end of the tube is not affected by wear and tear, it is necessary to replace it periodically with a new one. Replacement parts are available online and in some local stores. All repair parts undergo quality control testing as per ENDOCORP ISO 9001:2015 Inspection Instructions before being shipped.
Some insertion tubes come with a sensor that detects the onset of damage to the proximal end. If the sensor detects a damaged area on the insertion tube, the instrument will stop working and display an error message on its monitor. This can be frustrating for the endoscope user.
When the endoscope is damaged, it may be difficult to find an appropriate replacement. It is a good idea to consult with a health care provider before purchasing a replacement part.
Another way to confirm that the insertion tube is intact is to have it checked by an aspirate pH test. This can be done by your doctor or a healthcare provider by suctioning a insertion tube endoscope small amount of fluid from the body cavity and measuring its acid content. If the inserted tube’s acid level is low, it is likely that it is properly installed and should not be replaced.
The distal end of the insertion tube is made of soft resin
The distal end of the insertion tube of an endoscope has a lower stiffness than the proximal end side, so that it is easier to insert the insertion portion into a subject/object. The endoscope is made of a polymer base layer that contains a mixture of hard and soft resins. In addition, the base layer has a stiffness control ring that can be rotated to increase the stiffness of the insertion tube.
The bending section of the insertion tube is made of a co-extruded sheath member that is formed of a sheathing resin material containing closed cells. This sheathing resin material has a relatively large number of pores that make it suitable for guiding the insertion tube during insertion.
According to this embodiment, the bending section is also provided with a sleeve that abuts on the bending section or covers the outer peripheral side of the bending section. This sleeve, which can be made from soft resin, helps to prevent water penetration and increases the resiliency of the insertion tube.
In addition, the sleeve can reduce the size of the bending section and reduce the cost associated with the insertion tube. This is because the bending section can be produced from a single piece and the sleeve can be made from a very thin and lightweight plastic material that is easy to mold.
Moreover, the sleeve can help to enhance the flexibility of the bending section by allowing the bending section to bend as needed. This can enable the bending section to bend upward or downward, leftward or rightward, and in any direction of insertion.
The sleeve may also be used to improve the flexibility of the insertion tube by making the insertion tube more elongated, which makes it easier to insert. This also helps to reduce pain during the procedure.
The insertion tube is usually placed on a flexible pipe. The flexible pipe is then inserted into the body cavity and bent until it contacts the desired tissue. This method of insertion is called a curved path of insertion. This technique is highly effective in reducing the pain of the insertion. It is especially useful for the insertion of an endoscope into the abdominal cavity or the chest cavity.
The bending section of the insertion tube is made of a co-extruded sheath member
The insertion tube endoscope is a device that is used to inspect the gastrointestinal tract (GI) and other parts of a living body. This device is made of a flexible, elongated tube that is covered with a protective sheath.
The sheath is made from a combination of thermoplastic materials, such as polystyrene and acrylonitrile. This sheath helps prevent the insertion tube from cracking insertion tube endoscope during insertion and prevents the endoscope from becoming infected by bacteria.
This sheath is also lubricated to reduce friction between the endoscope and the patient, so that there is no chance of the device causing any injury or infection. This lubricant also protects the sheath from damage due to heat from the patient’s body.
To make the bending section, the polymer material is heated until it is melted and softened. After this, it is mixed with a polyurethane elastomer. This mixture is then extruded to produce the bending section of the insertion tube.
In a typical co-extruded sheath, the polymer material is a low-viscosity core material that has a glassy texture and can be crystallized in the die. In addition, this sheath layer has a high crystalline aspect ratio that is low enough to be able to encapsulate the core. This sheath material is primarily used as an inhibitor of cracking, but it may also be used to improve the extrusion rate and to provide a lubricating layer inside the die in which the core is being crystallized.
Another advantage of this sheath layer is that it can be produced in a high-speed, high-pressure system without the need for expensive dies. This type of sheath can be made of several different materials, including polystyrene, acrylonitrile, butadiene stryene terpolymer, and polycarbonate.
The bending section of the insertion tube is then extruded from the sheath to produce an elongated tubular body having an outer cover that covers the outer periphery of the bending section of the insertion tube. This outer cover is formed by the components described above in a uniformly mixed state in the mixing section 20 of the extruder 10.
The mixing section is equipped with a cylinder 21, an extrusion screw 22 and a hopper 23. The hopper 23 is connected to the cylinder 21 and contains an opening 25 through which the molten or softened material is fed.
The bending section of the insertion tube contains wires that control the curvature of the tip
The bending section of an insertion tube endoscope can be bent in an upward and downward direction or left and right by rotating two sets of knobs. This allows an endoscopist to sweep the tip of the insertion tube in any direction. The angulation of the bending section is determined by a maximum bending angle and cable slackness. This is measured by a hysteresis plot, which shows the amount of slackness in the bending section.
Unlike the other portions of the insertion tube, the bending section is constructed differently from the rest of the insertion tube. It is made of a series of oddly shaped metal rings, each one connected to the ring on either side of it via a freely moving joint. Each ring is displaced by 90 degrees from its neighbors.
Furthermore, the bending section is provided with a pair of sleeve rings and a control portion configured to control the bending section to be bent. The sleeve rings have an internal ring, and the control portion has an outer ring. When the sleeve rings are swung in the same direction, the bending section will bend downward and the inner ring will be pulled.
In the bending section, the bending section is fixed to a distalmost bending piece 23 that is the second from the distal end side and a plurality of bending pieces 24 that are the second from the proximal end side. In addition, a braid 28 that is a net-like tube is fixed to the bending pieces 24. The braid 28 is disposed so as to cover an outer periphery of the aforementioned distalmost bending piece 23 and a proximalmost bending piece 25 via pivotal support portions 41 such as rivets.
According to the present modification, in a bending tube 40 provided inside the aforementioned bending portion 12, the maximum diameter d1 of the distalmost end bending piece 23 and a maximum diameter d3 of the proximalmost end bending piece 25 are set to be substantially equal to each other (C1C32t1C3+2w2). This is because the thickness w2 of the braid 28 covers a thickness w2 of the parts covering the distalmost bending piece 23 and the aforementioned bending piece 24 a from the distal end side, as well as the aforementioned proximalmost bending piece 25 and the aforementioned bending piece 24b from the proximal end side.
