SU1750671A1 - Surgeonъs needle - Google Patents

Abstract

Usage: in medical technology, when suturing the tissues of the edges of wounds, mainly in deep operating cavities. SUMMARY OF THE INVENTION: The lateral surfaces of the plate in the transverse direction are oriented from the center of curvature of the needle rod and are bent toward its convexity in the longitudinal direction. 5 il.

Description

The invention relates to medical technology, namely to surgical needles for suturing tissue of wound edges, mainly in deep operative cavities.

Surgical needles are known to consist of a triangular point, a rod and a shank.

The known needle is a surgical one, the working pointed end of which is provided with plates with cutting edges attached to the apex of the triangle of the needle rod section, taken as a prototype.

However, when operating in deep operating cavities, additional manipulations are necessary associated with an increase in needle pressure on the fabric: the application of additional lateral force by the needle itself through the needle holder, the inversion of the fabric by the needle in order to prevent its clogging. The greatest danger arises in the case of the neurovascular branching in the wound area and the branches of other vital anatomical structures. Stapling with such a needle does not ensure atraumaticity in the Deep Operating Wound.

The purpose of the invention is to reduce trauma during deep cavity operations by correcting the path of movement of the needle to the center of its bend.

The essence of the invention is that the side surfaces of the plate in the transverse direction are oriented outward from the center of curvature of the rod and are bent in the direction of the convexity of the rod, in the longitudinal direction.

A comparative analysis with the prototype shows that the claimed needle is surgically different from the prototype by the orientation of the side surfaces of the plates in the transverse direction outward from the center of curvature of the rod, while in the longitudinal direction they are bent in the direction of the convexity of the rod.

Fig 1, the needle is surgical; in FIG. 2, the pointed part of the needle; in fig. 3 - section A-A of FIG. 2; FIG. 4 is a section along the line BB of FIG. 3: in FIG. 5 - diagram of the force interaction of the pointed part of the needle with stitched tissue

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Mist surgical contains a curved pointed rod 1 with a shank 2 and a curved spear-shaped plate 3 (FIG. 1) The cutting edges 4 of the curved plate 3 in the longitudinal direction are angled to the longitudinal axis of the rod 1. The side surfaces 5 of the plate 3 are transversely oriented outward from the center of curvature the rod and are bent in the direction of the convexity of the rod in the longitudinal direction with the formation of the angle ac by the longitudinal axis {Fig. 2-4)

When the needle moves in the fabric 6 at a speed V, the direction of which coincides with the longitudinal axis of the curvilinear rod 1, the inclined planes of the cutting plates experience the normal component Rn of the reaction R of fabric b directed to the center of curvature of the rod 1 and the axial component Rt ( 5).

The action of the normal component of the Rn reaction R causes the displacement of its trajectory towards the center of curvature of the rod 1

The most effective needle movement correction is performed at a values of 3-15 °. For denser fabrics, lower values are required. For loose fabrics, larger values are required.

Trajectory correction — a change in the shape of the needle movement line toward the center of curvature is carried out as a result of the movement of the needle itself. As a result, working conditions are improved in deep cavities, traumatizing the surrounding edges of the stitched wound of the anatomical structures is eliminated, eliminating the need for additional volumes of tissue to enter the suture space, eliminating the need to invert the needle to achieve the desired trajectory steepness.

Claims (1)

The invention The needle is surgical, containing a curved, pointed rod with a shank and a curved spear-shaped plate, the cutting edges of which in the longitudinal direction are angled to the longitudinal axis of the rod, characterized in that, in order to reduce the morbidity during surgery in deep cavities by correcting the movement trajectory the needles to the center of its bending, the side surfaces of the plate in the transverse direction are oriented outward from the center of curvature of the rod and bent to the side of the convexity of the rod in the longitudinal direction "/./ / Jh FIG. 2 S s A-A