SU1364322A1 - Forceps - Google Patents

Abstract

The invention relates to medical technology. The purpose of the invention is to reduce the trauma during resection of parenchymal organs. The clamp contains two pairs of arched branches 1-2. The ends of each pair are rigidly connected with C-shaped joints 3. Performing branches of titanium nickelide with arcuate ensures uniform clamping of tissues regardless of their cross-sectional profile. Reducing the cross sections of the branches with respect to the cross section of the joints facilitates their deformation by the forces developed in the joints with large sizes of the organ being operated, and increases the reliability of uniform clamping of the tissue. 2 h. the item of f-ly, 4 ill. .4 SS CO OO tsD //g./

Description

The invention relates to medicine, specifically to surgical instruments, and can be used to prevent and stop bleeding in resections and injuries of parenchymal organs.

The purpose of the invention is to reduce trauma during resection of parenchymal organs by preventing tissue crushing.

FIG. 1 shows a clip in a state prepared for operation; in fig. 2 - the same after triggering; in fig. 3 - clamp, isometric; in fig. 4 is the same as the embodiment.

The clamp contains two pairs of arcuate

ten

however, for large sizes of the organ being operated and thereby increases the reliability of uniform clamping of the tissue. The interval ratio of the areas of 1.5 ... 3 is established empirically. When the ratio of the cross-sectional areas of the joints to the areas of the branch sections exceeding 3, the tissue is crushed. At a ratio of less than 1.5, the effect of increasing tissue clamping reliability is not noticeable.

The clamp is applied as follows.

During the operation, the clamp is cooled to a temperature below 10 ° C, the branches are expanded to the shape shown in FIG. 1, and place the section of the body between the branches 1 and 2

branch 1 and 2, oriented V-shaped, 55 pairs. Under the action of body temperature or facing inward towards it, a near-additional heat source (for example

tampon with a warm solution or a reflector) joints 3 are activated, and the branches clamp the tissue with blood vessels. After that, a section of the organ between the pairs of branches 1 and 2 is cut out.

The ends of each pair are rigidly connected with C-shaped joints 3, the pairs are mutually oriented V-shaped and towards the separated ends of the branches, which are also rigidly connected by separate C-shaped 20 joints 4. The joints and branches are made constant with a ratio of their area 1 , 5 ... 3.

The implementation of titanium nickelide branches with arcuate and facing concavity - 25 towards them ensures uniform pressure of tissues regardless of their cross-sectional profile and eliminates crushing of individual sections due to the fact that after warming up titanium nickelide acquires super-elastic properties, in which intermittently reversible deformations 6% of the stresses remain constant and equal to the martensitic shear stress. Therefore, when the clamp is triggered by restoring the shape of the joints 3 first (in the warm solution retractor or reflector), the joints 3 are triggered, and the branches clamp the tissues with blood vessels. After that, a section of the organ between the pairs of branches 1 and 2 is cut out.

In the clamp (Fig. 4), a pair of arcuate branches can be located one parallel to the other, which is determined by the shape and size of the organ being operated.

Claims (3)

Invention Formula . A clamp comprising a spring and branches, characterized in that, in order to reduce the morbidity during resection of parenchymal organs by preventing tissue crushing, it is made in the form of two pairs of arcuate branches oriented V-shaped and facing inwards towards each other, the proximal ends of each pair are rigidly connected with the C-shaped result of the bends of the branches) come into contact with each other, the pairs are mutually located with the tissue of the joint organ 4. When the strain voltage reaches, equal to the voltage of martensitic joint VIG, the deformation of the tissue of the organ is stopped and the deformation occurs by bending the branches before they are in contact with the tissues of the organ and clamped with a constant level of stresses. As a result, all areas of the clamped tissue are transferred with constant force. The C-shape of the joints ensures their uniform deformation during bending and, therefore, eliminates the possibility of the plastic component of the deformation and the associated reduction in the forces exerted by the jaws on the tissue of the organ. Their metrically and proximal ends opposite to the indicated ones are also rigidly connected by separate C-shaped joints, while the entire device is made of titanium nickelide, which in C-shaped joints is selected with the forming molding temperature exceeding the temperature of the mold forming of the other parts of the device at 20-40 ° C. 2. Clamp according to claim 1, characterized in that the 45 pairs of arched branches are located parallel to one another. 3. Clamp on PP. 1 and 2, characterized in that, in order to increase the reliability of uniform clamping of tissues with large dimensions of the operated organ, the articulation and The reduction of branch sections with respect to 50 branches is made with the ratio of areas A reduction in the cross section of the joints facilitates their deformation by the forces developed in the joints of the joint to the area of branches from the interval 1.5 ... 3. sections however, for large sizes of the organ being operated and thereby increases the reliability of uniform clamping of the tissue. The interval ratio of the areas of 1.5 ... 3 is established empirically. When the ratio of the cross-sectional areas of the joints to the areas of the branch sections exceeding 3, the tissue is crushed. At a ratio of less than 1.5, the effect of increasing tissue clamping reliability is not noticeable. The clamp is applied as follows. During the operation, the clamp is cooled to a temperature below 10 ° C, the branches are expanded to the shape shown in FIG. 1, and place the section of the body between the branches 1 and 2 par. Under the action of body temperature or an additional heat source (for example  par. Under the action of body temperature or an additional heat source (for example tampon with a warm solution or a reflector) joints 3 are activated, and the branches clamp the tissue with blood vessels. After that, a section of the organ between the pairs of branches 1 and 2 is cut out. In the clamp (Fig. 4), a pair of arcuate branches can be located one parallel to the other, which is determined by the shape and size of the organ being operated. Invention Formula . A clamp comprising a spring and branches, characterized in that, in order to reduce the morbidity during resection of parenchymal organs by preventing tissue crushing, it is made in the form of two pairs of arcuate branches oriented V-shaped and facing inwards towards each other, the proximal ends of each pair are rigidly are connected by C-links, the pairs are mutually symmetrical and their proximal ends opposite to the indicated ones are also rigidly connected by separate C-joints, while the whole device is made of kelida titanium, which is C-shaped articulation x is selected with audio formovosstanovle- temperature higher than the temperature formovos- Formation remaining parts of the device at 20-40 ° C. 2. Clamp according to claim 1, characterized in that the 45 pairs of arched branches are located parallel to one another. 3. Clamp on PP. 1 and 2, characterized in that, in order to increase the reliability of uniform clamping of tissues with large dimensions of the operated organ, the articulation and articulation sections to areas of branches from the interval 1.5 ... 3. sections FIG. 2 cpuz.J eri2.