RU47689U1 - BLOOD VASCULAR PROSTHESIS BIFURCTION POLYMER POLYMER WITH ZERO PORCITY - Google Patents

Abstract

The utility model relates to medicine and can be used in vascular surgery. The model is a structure consisting of a base -woven or knitted bifurcation prosthesis made of synthetic polymers with geometric dimensions: The main part is a length of 100 to 200 mm; inner diameter from 15 to 25 mm; thickness from 0.5 to 3 mm; responses: length from 250 to 350 mm; the inner diameter is from 8 to 14 mm, the thickness is from 0.5 to 2.5 mm, on which there is a tube over the entire surface, from 0.03 to 0.2 mm thick, hermetically connected to the base and made of a copolymer of vinylpyrrolidone with butyl methacrylate.

Description

The utility model relates to medical devices, namely, products used in vascular surgery.

Known use of wicker or knitted prostheses of blood vessels from synthetic polymeric materials - Teflon, polyester (Losev R. 3., Kulikov L.N. et al. Emergency operations for aneurysms of the abdominal aorta. J. Angiology and Vascular Surgery, 2004, No. 2 , annex 15 (XIX). Materials of the 15th International Conference of the Russian Society of Angiologists and Surgeons. Petrozavodsk - Kondapoga, June 2004, p. 161-163). The disadvantage of such prostheses is that they are leaky in the initial state, i.e. do not have zero porosity, which leads to a significant loss of blood in the first hours after surgery;

The technical task of the proposed Utility model is to create a prosthesis with zero porosity ..

The technical result is achieved by the fact that the prosthesis is made of a base - wicker or knitted bifurcation prosthesis of synthetic polymers with geometric dimensions:

Trunk part

length from 100 to 200 mm; inner diameter from 15 to 25 mm thickness from 0.5 to 3 mm,

replies:

length from 250 to 350 mm; inner diameter from 8 to 14 mm thickness from 0.5 to 2.5 mm

on which outside the entire surface there is a tube with a thickness of 30 to 200 μm (0.03 to 0.2 mm) sealed to the base and made of a copolymer of vinylpyrrolidone with butyl methacrylate PPB-1.

The essence of the Utility Model is expressed in the fact that the tube on the outer surface of the base is made of a biodegradable copolymer, which resolves within 1-2 months, allowing tissue to grow inside the prosthesis.

The application of the proposed Utility model provides primary zero porosity, which eliminates the loss of blood through the prosthesis in the first hours after surgery. The proposed Utility Model operates as follows.

After removal of the changed portion of the vessel, a prosthesis of the appropriate diameter is selected and its length is changed in accordance with the length of the removed portion. Then end-to-end ligature form anastomoses prosthesis vessel with both ends of the patient's vessel. The wound is sutured in layers

Examples of manufacturing a utility model.

Example 1

A knitted prosthesis made of polyester with the dimensions of the main part, diameter 15 mm, length 100 mm, thickness 0.5 mm, branch diameter 8 mm, length 250 mm, thickness 0.5 mm is put on a mandrel of the corresponding diameter and on the outer surface by the method of irrigation from an alcohol solution of the PPB copolymer -1 form a tube with a thickness of 0.03 m over the entire surface.

Example 2

A braided prosthesis made of Teflon with dimensions: the main part diameter is 20 mm, length 150 mm, thickness 1.5 mm, responses: diameter um, length 300 mm, thickness 1.5 mm, put on a mandrel of the corresponding diameter and on the outer surface by the method of irrigation from an alcohol solution of the PPB- copolymer 1 form a tube with a thickness of 0.18 mm over the entire surface.

Example 3

A knitted prosthesis made of polypropylene with the dimensions: the main part is 25 mm in diameter, 200 mm long, 3 mm thick, and 14 mm in diameter, length is 350 mm, 2.5 mm thick is put on a mandrel of the corresponding diameter and on the outer surface by the method of irrigation from an alcohol solution of PPB copolymer -1 form a tube with a thickness of 0.3 mm over the entire surface.

Claims (1)

A blood vessel prosthesis made of polymeric materials, characterized in that it consists of a base - a woven or knitted bifurcation prosthesis made of synthetic polymers with geometric dimensions trunk part length from 100 to 200 mm inner diameter from 15 to 25 mm thickness from 0.5 to 3 mm branches length from 250 to 350 mm inner diameter from 8 to 14 mm thickness from 0.5 to 2.5 mm on which on the outside over the entire surface there is a tube from 30 to 200 μm thick (from 0.03 to 0.2 mm) tightly connected to the base and made of a copolymer of vinylpyrrolidone with butyl methacrylate PPB-1 and an antimicrobial substance, in the following ratio of components, wt .%: Vinylpyrrolidone copolymer with butyl methacrylate PPB-1 50 - 90 Antimicrobial substance 10 - 50