JPH0613850U - IVH catheter with filter - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To prevent accidental injection of highly viscous enteral nutritional supplements into patients. [Constitution] A catheter 1 configured by connecting a catheter body 2 to a connector-3, and having a filter-4 mounted on a liquid flow path 6 of the connector-3. In addition, a catheter which is constructed by connecting a main body of the catheter to a connector, and a connector having a filter attached to a liquid channel is detachably connected to a rear end portion of the connector.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 For patients who are unable or deficient in oral nutrition intake due to encephalopathy or gastrointestinal disorders, etc., a catheter that is percutaneously inserted into the central vein to provide parenteral nutrition of sugar, amino acids, vitamins, etc. It is about improvement.

An IVH catheter placed in a patient's body has a fitting portion (connector) at a distal (outside of the body) with an infusion set that serves as a channel for an infusion nutrient. This connector (female type) can be connected to most of the infusion set fitting parts (male type), and the nutrient solution can be easily administered without leaking. Depending on the case and patient's condition, enteral nutrition may be used in combination with parenteral nutrition. In enteral nutrition, ED catheter is inserted transdermally or nasally, and enteral nutritional agents are administered through this, but ED catheter is externally equivalent to IVH catheter. There is a connector and an infusion set is connected to this connector in the same way as for parenteral nutrition.

Conventionally, the fitting part of the connector of both IVH and ED catheters can be connected to most infusion sets, but when parenteral nutrition and enteral nutrition are used together, the former May be connected to ED and the latter to IVH, which can be a fatal disorder especially when an enteral nutritional drug is infused intravenously. Therefore, in hospitals, the catheter and the infusion set are separated by color to prevent connection mistakes.However, when continuous nutrition is being administered, drugs may be exchanged at night, and the connection is not clear because the colors are unclear. There was a possibility of making a mistake. The present inventor has made extensive studies in order to solve the above problems, and as a result, arrived at the next inventor.

[Means for Solving the Problems]

The present invention is to provide a catheter 1 in which a catheter body 2 is connected to a connector-3 and a filter 4 is attached to a liquid flow path 6 of the connector-3.

The present invention provides a catheter 11 in which a filter mounting portion 17 is formed in the middle of the above-described connector-3 (13) and a filter 14 is mounted on the mounting portion 17.

The present invention is constructed by connecting the cathether body 22 to the connector 23, and at the rear end of the connector 23, the connector 28 having the filter 24 attached to the liquid flow path 26. It is intended to provide a catheter 21 which is detachably connected.

The present invention provides a catheter 31 in which a filter mounting portion 37 is formed in the middle of the connector 28 (38) described above, and the filter 34 is mounted on the mounting portion 37.

[0008]

[Action]

 For example, even if an infusion set for enteral nutrition is mistakenly connected to the connector, the enteral nutrition will not be injected into the human body through the filter 4 and the catheter body 2.

[0009]

【Example】

 FIG. 1 is a schematic view of a catheter 1 of the present invention. The catheter 1 is composed of a catheter main body 2 and a connector-3 connected thereto. The connector 3 has a connecting part 5 formed at the front with the catheter body 2 and a fitting groove 9 formed at the rear with a male fitting part of an infusion set or the like. A liquid flow path 6 communicating with the main body 2 of the catheter is formed inside the connector-3, and a filter-4 is attached in the middle of the liquid flow path 6. The filter 4 is fixed between the stepped portion 10 provided in the liquid flow path 6 and the locking portion 7.

The filter-4 may be any filter as long as it can prevent a highly viscous nutrient from entering the patient's body from the connector-3 side through the catheter body 2. For example, a cylindrical one or a membrane one can be selected, and the material is ethylene-vinyl acetate copolymer such as polypropylene, polyethylene, nylon, polyurethane, cellulose, or other polymer or ceramic. It can be used by appropriately selecting from. The design of the pore size of the filter 4 can be changed within the range of about 0.2 μm to 1 mm depending on the material and the shape of the filter.

FIG. 2 is a schematic view of a catheter 11 having a connector 13 in which a filter mounting portion 17 is formed in the middle of the connector 3 instead of the connector 3 shown in FIG. 1 and a filter 14 is mounted thereon. Is. The other constituent members are substantially the same as those of the catheter 1 shown in FIG.

FIG. 3 is a schematic view of a catheter 21 showing another embodiment of the present invention. The catheter 21 is configured by connecting the catheter body 22 to the connector 23, and the connector 28 having the filter 24 attached to the liquid flow path 26 is attached to and detached from the rear end of the connector 23. It is possible to connect.

In FIG. 4, instead of the connector 28 shown in FIG. 3, a mounting portion 37 of a filter is formed on the way, and a catheter 31 having a connector 38 in which a filter 34 is mounted is shown. It is a schematic diagram. The other components are substantially the same as those of the catheter 21 shown in FIG. Next, an example of how to use the catheter of the present invention will be described.

Example 1 Commercially available enteral nutrients were prepared at 1.5 kcal / ml (viscosity 6.8 to 18.6 cp, normal temperature), and a polyethylene membrane filter having a pore size of 0.5 μm was prepared. The flow rate was confirmed by passing through the attached catheter 1 (FIG. 1). The enteral nutrients could only obtain a flow rate of about 10% as compared with a normal infusion solution (those having a viscosity almost similar to that of water), and the filter was immediately knotted.

Example 2 The enteral nutrient prepared in the same manner as in Example 1 was introduced into the same catheter 1 as in Example 1 using an infusion pump. The infusion pump stopped immediately due to the difference in inflow pressure.

Based on the above results, by attaching a filter having an appropriate pore size, material and shape to the external end of the catheter, an infusion bag containing a highly viscous enteral nutrient, an infusion solution Even if the set is connected incorrectly, the enteral nutrition will not be injected into the human body through the catheter body 2.

The catheters 21 and 31 shown in FIGS. 3 and 4 are connected to the connector after connecting the infusion set to the connector 28 (38) and confirming that a normal infusion can be introduced. By removing 28 (38), the infusion set can be connected to the connectors 23 and 33. This is because it is possible to smoothly inject the transfusion agent if there are no obstacles such as the filters 24 and 34 in the liquid flow paths 26 and 36.

[0018]

[Effect of device]

 Since it is possible to prevent accidentally injecting a highly viscous enteral nutrient or the like into a patient, it can be used with confidence. Further, the connectors 28 and 38 to which the filters 24 and 34 are attached can be removed for convenience, so that the operability is good.

[Brief description of drawings]

FIG. 1 is a schematic view of an IVH catheter with a filter according to the present invention.

FIG. 2 is a schematic view of an IVH catheter with a filter according to the present invention.

FIG. 3 is a schematic view of an IVH catheter with a filter according to the present invention.

FIG. 4 is a schematic view of an IVH catheter with a filter according to the present invention.

[Explanation of sign]

1, 11, 21, 31 Cathel 2, 2, 22, 32 Cathel body 3, 13, 23, 33, 28, 38 Connector-4, 14, 24, 34 Filter-5, 15, 35, 36 , 25a, 35a Connection part 6, 16, 26, 36 Liquid passage 7, 27 Filter-locking part 17, 37 Filter-
Mounting groove 9, 19, 29, 29a, 39, 39a Fitting groove 10, 20 Step

Claims (4)

[Scope of utility model registration request] 1. A filter-equipped I characterized in that a catheter body 2 is connected to a connector-3, and a filter-4 is attached to a liquid channel 6 of the connector-3.
VH catheter 1 (hereinafter "catel 1"). 2. A catheter 11 characterized in that a filter mounting portion 17 is formed in the middle of the connector-3 (13) according to claim 1, and a filter 14 is mounted on this. 3. A catheter main body 22 is connected to a connector 23, and a connector 28 having a filter 24 attached to a liquid flow path 26 is detachably attached to a rear end portion of the connector 23. Category characterized by being connected
Tell 21. 4. A catheter 31 characterized in that a filter mounting portion 37 is formed in the middle of the connector 28 (38) of claim 3 and a filter 34 is mounted on this.