DD225618A1 - CUTTING DEVICE FOR PROCESSING ORGANIC MATERIAL - Google Patents

Abstract

The invention relates to a cutting device for processing organic material in medicine. The aim of the invention is to reduce the manual effort in carrying out cutting operations. Based on the object to develop a new device for universal cutting and removal of organic material with any depth of cut and cut length, were used as a cutting instrument one or more acted upon with a liquid pressure in the range of 3 to 20 MPa cutting dowel. When pressure is applied to the cutting nozzle at a pressure of 3 to 8 MPa, soft layers of meat are released from the muscle meat or bones. In the pressure range of 8.5 to 20 MPa bone, cartilage and Muskelstraenge as well as hard meat and muscle layers are severed. The cutting dome is connected to a handpiece, which after a contour scan of the organic material and the definition of the cutting line by a microprocessor is moved three-dimensionally by a controller or by a hand guide. Areas of application of the device are the processing of organic material for the performance of surgical cuts, for the separation of bones and tissue layers as well as for the cutting of individual meat parts in the production of organ transplants and in slices on the living organism in the entire medical field. Fig. 1

Description

Cutting device for processing organic material

Field of application of the invention:

The invention relates to a cutting device for processing of organic material for surgical cuts, for separating bones and tissue layers as well as for cutting individual meat parts in the processing of organ transplants and the living organism in the entire field of medicine.

Characteristic of the known technical solutions:

Known devices for cutting organic material based on the action of mechanical cutting tools such. B. surgical knife.

A disadvantage is the high manual effort for processing large areas and for performing deep cuts, especially for the production of organ and bone transplanates. It is particularly disadvantageous that the risk of injury to non-processed tissue layers, organs and organ parts and individual bone layers can not be excluded.

In particular, in DD-WP No. 10388, international class A 61B17 / 14, entitled "Saw for Bone Operation", a motor-driven cutter with single driven blades is set forth, which avoids damage to the soft tissues by a small stroke of the saw blades.

A disadvantage is the limited working area due to the small depth of cut and the kerf width. <br/> [0002] Laser scalpels of different construction methods are also known for performing cutting operations Nightly, the resulting heat development at the interface, closing of the tissue layers and cores in the cutting area and the low depth of cut. Also devices for cutting organic material with high frequency currents are known, in particular in DD-WP No. 7550, international class A61B17 / 36, entitled "Electro-surgical apparatus" is a device for cutting organic material by means of high-frequency currents of different strength and The disadvantage is the high technical complexity, the low separation effect and the low depth of cut.

Object of the invention:

The aim of the invention is to reduce the manual effort when performing cutting operations.

 Explanation of the essence of the invention:

The invention has for its object to develop a new device that can be used universally for cutting and removal of organic material with any depth of cut, cutting length and cutting position in the entire field of medicine. The insert is preferably intended for surgical incisions, for the treatment of organ transplants, for peeling the meat from the bones, for separating bones and tissue layers, for selective processing of individual meat pieces and for removing damaged skin layers without heat to the tissue and without a closure of the Wound area be possible. According to the invention, the solution of the problem is solved in that as a cutting instrument one or more with a liquid pressure, preferably in the range of 3 to 20 MPa,

applied to surgical jets. At a pressure of 3 to 8 MPa, the peeling of soft layers of meat, such as accumulations of fat and embedded fat streaks from the muscle meat or bones by the liquid jet occurs. In the pressure range of 8 to 15 MPa smooth surgical cuts are made in the meat area and in the area of soft cartilage layers. Bone, cartilage and muscle meat as well as hard meat and / or muscle layers are severed at a pressure of 8.5 to 20 MPa and above. In a further embodiment of the invention, the device has a pressure selection circuit, a controller for moving one or more cutting nozzles and a pressure generating unit. Furthermore, the control is done by a microprocessor or by a hand guide. In a further embodiment of the invention can be used as a cutting fluid disinfectant and / or preservative, in particular formaldehyde in dilution and / or in conjunction with water with additions of coagulation and / or stabilizing agents.

Embodiment:

The invention is explained in more detail by an embodiment. 1 is a side view of FIG. 2 is a plan view

The device according to the invention consists of a distance to be processed, organic material 1 guided, acted upon with a liquid pressure of in the range of 3 to 20 MPa cutting nozzle 2, a pressure selection circuit 3 with fixed, different pressure ranges and a continuous fine adjustment of the pressure, a pressure generating unit 4, a handpiece 5 with inserted cutting nozzle 2, a shut-off valve 6 for the hydraulic fluid, a holder 7 for the organic material 1, a controller 8, in particular a microcomputer with a drive control system

for movement and position control of the cutting nozzle 2, a support 9 for the organic material 1 and as a scanning element for position detection and for cutting the control 8 from an optical sensor 10th

Mode of action:

The organic material 1, an organ transplant from which the outer meat layer is to be partially removed, is fixed with the holder 7 on the support 9. After switching on the pressure generating unit 4, the liquid pressure is built up in the liquid supply and kept constant via the pressure control valves of the pressure selection circuit 3. Before the start of the cut, the cutting nozzle 2 is moved by the controller 8 in the starting position. At the same time, the situation image is recorded with the actual and desired values for processing by the optical sensor 10 and programmed in the microcomputer of the controller 8, according to the intended cutting process, the movements of the cutting nozzle 2. Due to the independence of the depth of cut from the distance of the cutting nozzle 2 to the organic material 1, this distance can be set arbitrarily. In accordance with the preselected work task, the respectively required pressure range is set by the microcomputer in the pressure selection circuit 3. To remove the outer soft meat layer, the liquid is supplied with a pressure of 3 to 8 MPa. The movement of the cutting nozzle 2 can take place three-dimensionally in any plane to the organic material 1. If the layer is not completely removed, repeated repeated cuts over the entire length or immediate correction of the cut by the optical sensor 10 and feedback to the controller are possible.

The cutting means, preferably pure water, can be replaced by known disinfecting and preserving agents, in particular formaldehyde in dilutions and / or in conjunction with water or water with additions of coagulating and / or stabilizing agents according to the intended use.

Claims (5)

Invention claim: 1 # Cutting device for the processing of organic material in the entire field of medicine, preferably for the production of surgical sections for processing organ and bone transplants, for peeling the meat off the bones, for selectively processing tissue and meat parts and for removing damaged Skin and meat parts of scars and burns, characterized in that these one or more, with an outlet opening having a diameter, in particular less than 1 mm, facing the outlet opening in the cutting direction, with a fluid pressure, preferably in the range of 3 to 20 MPa acted upon and moved along the cutting line or the working plane cutting nozzle (2) consists of a liquid cutting jet, in particular water, with a high flow velocity, corresponding to the preferably applicable pressure ranges of 3 to 8 MPa for peeling soft meat layers v on the bones and / or harder meat or muscle parts, from 8 to 15 MPa for cutting within meat layers and for smooth surgical cuts in meat and soft cartilaginous layers and from 8 to 20 MPa for cutting bones, cartilages, muscle strands and hard meat or muscle layers equipped with a pressure selection circuit (3) for adjusting the pressure ranges, a pressure generating unit (4 ·), a handpiece (5) »a shut-off valve (6), a holder (7), a controller (8) and a support (9) equipped is. 2. Device according to item 1, characterized in that the controller (8) consists of a microprocessor. 3. Device according to item 1 and 2, characterized in that as cutting fluid disinfectant and / or preservative, in particular formaldehyde in dilution and / or in conjunction with water or water with additions of coagulation and / or stabilizing agents is provided. 4. Device according to item 1 to 3> characterized in that the controller (8) has a simultaneous contour scanning with subsequent triggering of the individual fluid pressure ranges or the separate triggering of individual pressure ranges independently. 5 device according to item 1 to 4, characterized in that the guide of the cutting nozzle (2) is replaced independently of a controller (8) directly by a hand guide. For this 1 sheet drawings