DEVICE AND METHOD FOR CREATING CHANNEL IN SOFT TISSUE Russian patent published in 2022 - IPC A61F9/00 A61B17/00 A61M1/00 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to medical equipment, namely surgical cutting tools. A medical device for removing soft tissue of a given shape from a target tissue layer of the eye during the eye treatment is made with the possibility of creating a corresponding channel with given geometric characteristics and orientation between two sidewalls of the target tissue layer, the device contains coaxial outer and inner elongated elements passing along the axis X. The outer element contains an open distal side and the first distal part made with the possibility of insertion into the target tissue layer during axial forward movement. The inner element contains the second distal part and a chamber. A method for obtaining a cutting tool used in the eye treatment for cutting and removing soft tissue of a given shape from the eye wall includes providing a tool containing, on its distal side, a hollow cylinder having uniform outer and inner diameters and passing along at least a given length, while the inner diameter is larger than the first diameter, shaping a distal section of the hollow cylinder according to a given sample in such a way that both inner and outer diameters are decreased towards the distal end of the hollow cylinder, and in such a way that the first diameter is larger than the inner diameter and smaller than the outer diameter at the distal end, and removing a hollow cylinder fragment along the distal section in such a way that the inner diameter at the distal end is essentially equal to the first diameter, and the inner diameter at the proximal end of the distal section is essentially equal to the chamber diameter. The cutting tool removes a given shape of soft tissue when rotating and moving forward in the eye treatment, while leaving a matching channel between two walls of soft tissue, while the cutting tool is manufactured according to the above-mentioned method. In the second embodiment, a cutting tool is used to remove a given shape of soft tissue when rotating and moving forward during the eye treatment, while leaving a matching channel between two walls of soft tissue, wherein the cutting tool contains an elongated round body, a cutting section on the distal side of the elongated body and a cavity. In the third embodiment, the cutting tool removes a given shape of soft tissue when rotating and moving forward during the eye treatment, while leaving a matching channel between two walls of soft tissue, wherein the cutting tool contains the above-mentioned elongated round body, cutting section and cavity. The cavity has a cavity diameter that is smaller than the first diameter at the distal end of the cavity, and which continuously increases towards the proximal end of the cavity. In the fourth embodiment, a cutting tool removes a given shape of soft tissue when rotating and moving forward during the eye treatment, while leaving a matching channel between two walls of soft tissue, wherein the cutting tool contains the above-mentioned elongated round body, cutting section and cavity. The cavity has a length corresponding to at least the length of removed tissue. The cavity has a constant cavity diameter, which is equal to the first diameter, while the first diameter is from 0.1 mm to 0.2 mm. A method for creating a channel with the specified geometric characteristics in a target tissue layer of the eye in the eye treatment is described, while the channel is formed in the form of a hole passing between two sidewalls of the tissue layer, while the method includes providing the above-mentioned medical device; placing the specified device on the target tissue layer by moving the device forward along the axis X, while the specified inner element is located inside the specified outer element until the specified target tissue layer is reached, where the first distal part of the outer element is pushed inside target tissue so that at least the distal section of the distal part is inserted inside the target tissue layer; creating the specified channel by rotating and pushing the specified second distal part out of the specified outer element, thus cutting and removing tissue from the specified target tissue layer and preserving removed tissue in the device; pulling the specified second distal part proximally outward from the specified target tissue layer and into the inner space of the outer element, and pulling the first distal part proximally outward from the specified target tissue layer and removing the device outward from the body essentially along the axis X.

EFFECT: use of inventions ensures the creation of a channel with a well-defined shape inside soft tissues, in particular, in the eye wall, respectively removing the clearly defined shape of soft tissues of the body.

43 cl, 10 dwg