DE202004019376U1 - Bipolar surgical clamp for coagulating tissues to stop bleeding has scissors pivot and handles on shafts at proximal end and has curved tapered jaws at distal end with flat mating surfaces - Google Patents

Abstract

The tissue coagulating clamp has two proximal shafts (10,11) connected to handles. The shafts cross at a scissors-type pivot (15). The clamping portion (14) at the distal end of the surgical instrument has two curved tapered electrodes (12,13) with rounded ends (16,17). The mating surfaces of the clamps are flat, with two small hemispherical protuberances in one face.

Description

The The invention relates to a bipolar clamp for coagulating tissue according to the preamble of claim 1, as in electrosurgical Procedure applies.

bipolar Terminals for Electrosurgery has the task of tissue, especially vessels for a Preparing section by the tissue coagulated electrosurgically becomes. This z. B. vessels "welded", so that the cut made bloodless.

Usually have bipolar clamps rectilinear terminal parts, which end so blunt that the surgeon when coagulating a Vessel surrounding Tissue can not hurt.

At the The operator therefore has to operate to separate mechanical surgical instruments to grab. Especially in the struma surgery, so the surgery in the thyroid gland, The operations are very complex and require frequent instrument changes.

Of the Invention is based on the object, a bipolar clamp for To show coagulation of tissue, which is a simplified approach in operations especially in the Struma surgery allows.

These The task is to coagulate tissue in a bipolar clamp with industries that over a hinge connection are connected together and proximal gripping means to close and open more distal Clamping parts with electrodes on the clamping parts for coagulating Having detected by the clamping parts tissue, solved in that the clamping parts a rounded with such a small radius Tip, that the clamp is suitable for preparing tissue Instrument forms. It is thus an essential point of the invention in that the tissue is punctured and pulled apart, so for free preparation individual areas is usable. It is thus in the bipolar invention Clamp made exactly the opposite of what is usually bipolar Clamps is provided: the "injury" avoiding rounded Top of a usual Bipolar clamp is modified to be a preparation instrument arises.

Preferably exceed the clamping parts do not have a width of 4 - 5 mm at their proximal ends, so that a "delicate" instrument arises that in particular for the goiter surgery is particularly suitable.

When particularly suitable radius has a range of 0.5 - 1 mm (maximum) exposed.

A further improvement of the device especially for the goiter surgery results when the clamps are orthogonal to a pivot plane defined by the hinge and its pivot axis bent are formed. This will in particular be operating in tight spaces and body cavities and handling " the curve around "relieved. Particularly suitable is a bending of about 20 - 25 ° has been found.

The Electrodes are preferably substantially up to the tip trained, so that even very fine blood vessels can still be detected. on the other hand the electrodes are exclusively on the facing surfaces uninsulated while their backs and preferably also side areas are insulated such that electrical contact to the surrounding tissue even in confined spaces labor relations safely avoided.

preferred embodiments The invention will become apparent from the dependent claims and the following Description of a preferred embodiment based on Illustrations closer explained becomes. Hereby show:

1 a schematic perspective view and

2 a plan view of the terminal.

In the pictures are with the reference numbers 10 and 11 two branches of the terminal called. These are about a joint 15 pivotally connected to each other and terminate in distal clamping parts 14 , The distal clamping parts 14 are in a conventional manner with electrodes 12 . 13 provided, which are opposite to each other, so that a vessel taken and can be coagulated by supplying high-frequency current in a conventional manner. The power supply takes place here usually on the industries that are metallic, in which case the joint 15 is formed electrically insulating.

The clamping parts 14 end in tip 16 . 17 , whose radius R is less than 0.5 - 1 mm, so that tissue for free preparation of certain areas can be easily pierced and pulled apart.

Furthermore, the clamping parts 14 opposite to a through the pivot axis S of the joint 15 Defined plane E bent out and that by a bending angle C, which is preferably 20 - 25 °. The width B of the clamping parts 15 in her proxi paint end, so on the joint 15 directed area, is about 4 - 5 mm.

How out 2 Particularly clearly visible, the terminal in the plan view, ie from the direction of the pivot axis S on an end portion which has a length L a no longer converging, but rather cylindrical cross-section with (half) diameters D, so that for a Dolphin's beak gives typical shape. This results in a particularly good applicability for the Struma surgery.

10

1. business

11

Second business

12

1. electrode

13

Second electrode

14

(Distal) clamping parts

15

joint

16

1. top

17

Second top

B

width

R

radius

e

pivot plane

S

swivel axis

C

bend

D

diameter

L

length

Claims (8)

Bipolar clamp for coagulating tissue with branches ( 10 . 11 ), which are articulated ( 15 ) and proximal gripping means for closing and opening distal clamping parts ( 14 ), and with electrodes ( 12 . 13 ) on the clamping parts ( 14 ) for coagulating by the clamping parts ( 14 ) detected tissue, characterized in that the clamping parts ( 14 ) a tip rounded off with such a small radius (R) ( 16 . 17 ) that the clamp forms an instrument suitable for tissue preparation. Bipolar clamp according to claim 1, characterized in that the clamping parts ( 14 ) do not exceed a width (B) of 4-5 mm at its proximal end. Bipolar clamp according to one of the preceding claims, characterized characterized in that the radius (R) does not exceed 0.5-1 mm. Bipolar clamp according to one of the preceding claims, characterized in that the clamping parts ( 14 ) orthogonal to one through the joint ( 15 ) and its pivot axis (S) defined pivot plane (E) are bent. Bipolar terminal according to claim 4, characterized in that that the bend (C) is 20-25 °. Bipolar terminal according to one of the preceding claims, characterized in that the electrodes ( 12 . 13 ) substantially to the top ( 16 . 17 ) are formed out. Bipolar terminal according to one of the preceding claims, characterized in that the electrodes ( 12 . 13 ) uninsulated exclusively in the opposing areas, otherwise formed electrically insulated from overlying tissue. Bipolar clamp according to one of the preceding claims, characterized in that the clamping parts ( 14 ) in the area of the tip ( 16 . 17 ) having a length (L) extending portion of substantially semi-cylindrical cross-section (D) such that in a plan view of the bipolar terminal results in a delfinschnabel-shaped design.