RU34351U1 - Device for osteopuncture and intraosseous infusion - Google Patents

Description

Device for osteopuncture and intraosseous infusion.

The utility model relates to the field of medical technology, namely, devices for administering drugs into the bone.

Known needle for prolonged intraosseous infusion, made in the form of a hollow needle with a cannula in which the mandrin is installed (see "Orthopedics, traumatology and prosthetics, 1978, No. 8, pp. 69-70.).

A disadvantage of the known device is that the tool does not have a cutting part, therefore, it can be used only for osteopuncture of flat bones and metaphysical part of the tubular bones, where the compact layer is relatively thin, and cannot be used for long intraosseous infusions due to its unreliable fixation in bone and its tightness.

The closest adopted for the prototype is a needle for prolonged intraosseous infusion (see the description for the author's certificate of the USSR N 976972, MNC 3 A61 B 17/06, stated 08.06.81, published on 30.11.82).

The needle for long intraosseous infusions is made in the form of a hollow needle with a cannula in which the mandrel is installed, the working part of the mandrel is provided with cutting edges, a thread is made on the outer surface of the needle, and the needle cannula is connected to the mandrel with a key. The presence of a keyed connection ensures the mutual rotation of the mandrel and the needle. Thanks to screw threading, the needle creates a reliable connection with bone tissue and can remain in the bone marrow canal for up to 2 weeks.

The disadvantage of this needle for prolonged intraosseous infusion is the lack of special devices for removing the needle and for closing the needle cannula between the infusions to maintain tightness in the channel and prevent infection. In practice, the needle cannula must be covered with sterile cotton wool or a tissue between infusions, which does not exclude the risk of infection. Lack of a special team o o 5 1 g o 6 15

MGZH6 A 61 on 17/06

After removal of the needle from the bone marrow canal after a course of treatment, it is necessary to use improvised devices (elements of a standard medical instrument - tweezers, etc.), which can cause painful sensations and traumatic consequences for the patient.

A device for osteopuncture and intraosseous infusion is proposed, consisting of a hollow needle with a cannula and with a thread on the outer surface, placed inside the mandrel with cutting edges, characterized in that it is equipped with a knob and a plug, in the upper part of the cannula there is a through groove perpendicular to the longitudinal axis of the device, and 1agl} the scale and shank of the mandrel are made with protrusions.

The drawings show:

figure 1 - a device for osteopuncture and intraosseous infusion with a mandrin;

in FIG. 2 - a device for osteopuncture and intraosseous infusion with a plug;

in Fig.Z - a device for osteopuncture and intraosseous infusion with a collar.

A device for osteopuncture and intraosseous infusion consists of a hollow needle 1 with a cannula 2, mandrel 3, a plug 4 and a winch 5. A thread 6 is made on the outer surface of the hollow needle 1, mandrel 3 is coaxially mounted inside the hollow needle 1, the head of which is made in the form of a feather drill 7. In the upper part of the cannula 2 there is a through rectangular groove 8, designed to install the shank 9 of the mandrel 3, the plug 4 or the collar 5. The plug 4 and the shank 9 of the mandrel 3 are parts of complex shape, ensuring their tight installation in the cannula 2, and having a rectangular protrusion 10 for installation in the groove 8 of the cannula 2. The collar 5 is made in the form of a cylindrical rod with a figured recess 11 in the Central part for installation in the groove 8 of the cannula 2.

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Mandrin 3 is inserted into the cannula 1 (Fig. 1), it is inserted with a shank 9 on a drill or a rotor and after cutting the skin and soft tissues over the lesion with a 1-1.5 cm long section, the complete assembly is inserted into the bone axis strictly perpendicular to the axis of the bone bone marrow canal. The head part 7 of the mandrel 3 produces osteoperforation, and the hollow needle 1 is screwed through the formed hole tightly connected to the cortical layer of the bone. Mandrin 3 is removed from the cannula 1, and the necessary devices are attached to the cannula 2 (an apparatus for measuring intraosseous pressure, a syringe, a dropper for infusion, etc.). Between infusions, the cannula 2 is closed with a sterile plug 4 (FIG. 2). After performing osteopuncture, a plug 4 is removed to remove the device, and a knob 5 is inserted into the cannula 2 (Fig. 3) and, turning it smoothly, twist the crawl needle 1.

The cap, the collar, as well as the entire device for osteopuncture and intraosseous infusion, can be made of metal, which will allow them to be sterilized and reused. In particular, the device can be made of titanium alloys, possessing their corrosion resistance and not interacting: they are in contact with an organic medium.

Thus, the changes introduced in the design of the device for osteopuncture and intraosseous infusion allows the use of special devices to remove it (the gate) and to close the cannula between the infusions (plug). This will help maintain tightness in the bone marrow canal, prevent the possibility of infection, reduce trauma when removing the needle, which contributes to the rapid healing of the postoperative wound and recovery of the patient.

Claims (1)

A device for osteopuncture and intraosseous infusion, consisting of a hollow needle with a cannula and with a thread on the outer surface, placed inside the mandrel with cutting edges, characterized in that it is equipped with a knob and a plug, in the upper part of the cannula there is a through groove perpendicular to the longitudinal axis of the device, and the cap and shank of the mandrel are made with protrusions.