RU2195212C2 - Device for marrow puncture - Google Patents

Abstract

FIELD: medicine, particularly, traumatology; applicable in introduction of needle into bone marrow canal for prolonged therapeutic intraosseous infusions of medicinal fluids and for bone marrow anesthesia. SUBSTANCE: device has needle with thickened cannula, mandrin and fixing member for it, fixing member with thread and hollow handle with limiter installed on thread for regulation of length of needle introduction into bone marrow canal. Handle has longitudinal side recess for L-shaped bent of mandrin blunt end and side hole for unscrewing of fixing member with thread. Fixing member serves for holding the needle by its thickened part. Handle has made thread for limiter with female thread. EFFECT: higher efficiency. 2 cl, 8 dwg

Description

 The invention relates to medicine, in particular to traumatology, and can be used to insert a needle into the bone marrow canal for the purpose of long-term therapeutic intraosseous infusion of medicinal fluids, as well as for bone marrow anesthesia.

 A device is known comprising a needle with a cannula, a mandrin and a hollow handle having a clamp for a mandrel and a socket for a needle cannula, characterized in that in order to enable the use of needles with various cannulas, the device is equipped with a sleeve located in the handle and mounted with the possibility of longitudinal movement by threaded connection [1]. The disadvantage of this device is the need to leave the device handle limiter adjacent to the skin after the production of bone marrow puncture, which is unacceptable during prolonged intraosseous infusions, as it leads to pressure sores and purulent complications.

 The purpose of the invention is the ability to use needles with various cannulas for the production of long intraosseous infusions.

 In FIG. 1 shows a device for marrow puncture, general view; figure 2 - the handle of the device, front view; figure 3 is the same side view; in FIG. 4 - limiter device handle, front view; figure 5 - latch for mandrel, front view; figure 6 - clamp for the needle, front view; figure 7 - needle; in Fig.8 - mandren.

 The device consists of a hollow handle 1, in which a through channel 2 is made. The hollow handle 1 has a longitudinal side groove 3 in the upper part, and a side hole 4 with thread 5 on the opposite side. An external thread 6 is made in the lower part of the handle 1, and in the upper part of the through channel 2 is an internal thread 7. The handle stop of the device 8 is equipped with a support pad 9 and has a through channel 10 with an internal thread 11. The clamp for the mandrel 12 has an external thread 13. The clamp for the needle 14 is also provided with a thread 15. The device contains a needle 16 with ka Julia 17 having a thickening 18 and stylet 19 with a sharp tip 20 and the L-shaped curved blunt end 21.

 The proposed device operates as follows.

 A needle 16 is inserted into the upper part of the through channel 2 of the handle 1 and is fixed by thickening the cannula 18 with a needle retainer 14 screwed into the side hole 4 with the thread 5 of the handle 1 by thread 15. Mandrel 19 is inserted into the cannula 17 of the needle 16 with the sharp end 20 so that its L-shaped curved blunt end 21 penetrated into the longitudinal side groove 3 of the handle 1, and is fixed with a clamp for the mandrel 12, which is screwed by thread 13 into the upper part of the through channel 2 with the internal thread 7 of the handle 1. On the lower part of the handle 1 with the external thread 6 screwed I limit the handle of the device 8 through the internal thread 11 of the through channel 10. The device is ready for use.

 For insertion into the bone, the device is taken by the handle 1 and pressure, in combination with rotational movements, immerse the sharp end 20 of the mandrel 19 and the needle 16 in the bone marrow canal. Then, the needle clamp 14, holding the needle 16 for the thickening 18 of the cannula 17 in the lumen of the through channel 2 of the handle 1, is unscrewed, and the last together with the handle limiter 8, the clamp for the mandrel 12 and the mandrel 19 are removed through the cannula 17 injected medicinal fluids or display the contents. If necessary, by rotating the limiter of the handle 8 relative to the handle 1, the length of the needle 16 inserted into the marrow canal can be adjusted.

 The use of the proposed device expands the possibility of bone marrow punctures with needles of various designs for long intraosseous infusions of drugs.

Sources of information
1. Aut. St. 1175449, A 61 B 17/34, BI 32-85. Device for marrow puncture.

Claims (2)

 1. A device for marrow puncture, containing a needle with a cannula having a thickening, a mandrel, a retainer for mandrin, a retainer with thread and a hollow handle with a stopper mounted on the thread to control the length of the needle inserted into the marrow canal, characterized in that the hollow the handle has a longitudinal lateral groove under the L-shaped bend of the blunt end of the mandrel and a lateral hole for screwing in a threaded lock made to hold the needle for thickening, while the handle has an external thread for the stopper provided female thread.  2. The device according to p. 1, characterized in that the latch for holding the needle and the latch for the mandrel made in the form of bolts.

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