CN111134783B

CN111134783B - Rubber ring for haemorrhoids ligation

Info

Publication number: CN111134783B
Application number: CN201911281546.8A
Authority: CN
Inventors: 吴红清
Original assignee: Jiangyin Homen Rubber Plastic Product Co ltd
Current assignee: Jiangyin Homen Rubber Plastic Product Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2021-05-25
Anticipated expiration: 2039-12-13
Also published as: CN111134783A

Abstract

The invention discloses a rubber ring for loop ligature of haemorrhoids, which comprises an annular rubber ring body, wherein the annular rubber ring body is provided with an annular groove, one end of the annular groove is sealed, and the other end of the annular groove is opened; and one half of the annular groove is provided with a first semi-ring rubber ring doped with iron powder, and the other half of the annular groove is provided with a second semi-ring rubber ring doped with magnetic powder. The rubber ring for the haemorrhoid ligation has the characteristics of good rebound resilience, automatic tightening, difficulty in falling and bacterial breeding resistance.

Description

Rubber ring for haemorrhoids ligation

Technical Field

The invention relates to a medical ligation rubber ring, in particular to a rubber ring for hemorrhoid ligation.

Background

Hemorrhoid is a common anorectal disease, the treatment means of hemorrhoid is mature with the development of medical technology, and the ligation therapy is a method for treating hemorrhoid by ligating hemorrhoid tissues with rubber rings to make ischemic necrosis and finally automatically fall off.

Natural Rubber (NR) is a natural high molecular compound, the main component of which is polyisoprene, and NR has good flexibility, wear resistance, fatigue resistance and other properties, and is the most widely used general rubber at present. The natural latex is found to have the functions of promoting the regeneration of blood vessels, the adhesion of cells and the secretion of extracellular matrix, which all help to promote the replacement and regeneration functions of tissues. However, the rubber ring for ligation prepared from natural rubber in the prior art still has the advantages of common wet skid resistance, higher permanent deformation and easy falling off; the surface of the material is adhered with protein and cells to breed bacteria, and meanwhile, the tissue is adhered when falling off, secondary injury is caused, and the like, so that the application of the natural rubber in the aspect is limited. The structure and the raw material composition of the natural rubber material in the prior art need to be improved so as to meet the use requirement of the rubber ring for the hemorrhoid ligation.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the rubber ring for the ligation of the haemorrhoids, which has the advantages of good resilience, good wet skid resistance, automatic tightening, difficulty in falling and bacterial breeding resistance.

In order to achieve the purpose, the invention adopts the technical scheme that the rubber ring for the ligation of the haemorrhoids comprises an annular rubber ring body, wherein an annular groove is formed in the annular rubber ring body, one end of the annular groove is sealed, and the other end of the annular groove is open; and one half of the annular groove is provided with a first semi-ring rubber ring doped with iron powder, and the other half of the annular groove is provided with a second semi-ring rubber ring doped with magnetic powder.

In a further preferred scheme, the rubber ring body comprises 2-5% of reinforcing agent and 1.5-5% of accelerator by weight percentage; 1-2% of activating agent, 3-5% of anti-aging agent, 1-1.5% of cross-linking agent and the balance of natural rubber, wherein the sum of the weight percentages of the components is 100%; the raw material of the first semi-ring rubber ring is that nano iron powder is added on the basis of the raw material of the rubber ring body, and the weight percentage is 3-10%; the raw material of the second semi-ring rubber ring is that nano magnetic powder is added on the basis of the raw material of the rubber ring body, and the weight percentage is 3-10%.

In addition, according to a further preferred scheme, the opening end face of the rubber ring body is bonded with the inner wall of the rubber ring body, the first half-ring rubber ring and the second half-ring rubber ring by medical glue.

Further preferably, the reinforcing agent is white carbon black, the activator is zinc stearate, the anti-aging agent is 2-mercaptobenzimidazole zinc salt (ZMBI), the crosslinking agent is sulfur, and the accelerator is a combination of a sulfenamide accelerator and a thiuram accelerator.

Further preferably, the sulfenamide accelerators are N-cyclohexyl-2-benzothiazolesulfenamide (CZ) 0.5-1% and N-t-butyl-2-benzothiazolesulfenamide (NS) 0.5-1%, and the thiuram accelerators are dipentamethylenethiuram tetrasulfide (DPTT) 0.3-0.5% and tetrabenzylthiuram disulfide (TBzTD) 0.2-0.4%.

In a further preferred scheme, the magnetic powder is nano ferroferric oxide particles or nano neodymium iron boron particles.

In order to increase the antibacterial performance of the rubber ring and prevent the rubber ring body and cells from adhering to cause bacteria breeding, a further preferable scheme is that an antibacterial agent is added into the raw material of the rubber ring body, wherein the antibacterial agent is one or more of chitosan, nano silver, graphene or graphene oxide; the weight of the antibacterial agent accounts for 0.5-0.8% of the total mass of the rubber raw materials.

When a single vulcanization accelerator is used, the vulcanization accelerating effect can reach the limit after the dosage of the vulcanization accelerator exceeds a certain addition amount; in addition, when one vulcanization accelerator is excessively added, the vulcanization accelerator is more soluble than the rubber compound, so that the vulcanization agent is likely to migrate to the surface and precipitate out to form blooming. Therefore, the thionamide accelerator with high vulcanization speed and short scorching time is matched with the sulfenamide accelerator with high vulcanization speed, so that the vulcanization speed and the scorching safety of the rubber material can be well improved, and simultaneously, the physical properties of vulcanized rubber can be improved, the tensile strength is increased, and the elongation at break is increased. The anti-aging agent 2-mercaptobenzimidazole zinc salt (ZMBI) has no odor, excellent heat resistance and better protective effect on thermal aging and photoaging. The white carbon black has high hardness, is dispersed in rubber, and can improve the micro hardness and the micro surface roughness of the surface of the rubber by using a small amount of white carbon black, so that the white carbon black has important help for puncturing a water film and improving the wet skid resistance.

The invention has the advantages and beneficial effects that: the first half-ring rubber ring and the second half-ring rubber ring arranged in the rubber ring annular groove for hemorrhoid ligation are mutually attracted, and can keep a compression state when the rubber ring is used, so that the rubber ring is prevented from falling off; the rubber ring raw material adopts a plurality of accelerators to cooperate, so that the tensile strength of the rubber ring can be effectively improved, and the elongation at break can be increased; the antibacterial agent is added into the rubber ring body, so that the antibacterial performance of the rubber ring body can be improved.

Drawings

FIG. 1 is a schematic view of the open end face structure of the rubber ring for hemorrhoid ligation.

FIG. 2 is a schematic sectional view of the rubber ring for hemorrhoid ligation in accordance with the present invention

In the figure: 1. a rubber ring body; 2. a first semi-ring rubber ring; 3. a second semi-ring rubber ring; 4. and (4) glue.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in figure 1, the invention relates to a rubber ring for loop ligature of hemorrhoids, which comprises an annular rubber ring body 1, wherein the annular rubber ring body 1 is provided with an annular groove, one end of the annular groove is sealed, and the other end of the annular groove is opened; and one half of the annular groove is provided with a first semi-ring rubber ring 2 doped with iron powder, and the other half of the annular groove is provided with a second semi-ring rubber ring 3 doped with magnetic powder. The opening end face of the rubber body is bonded with the inner wall of the rubber body 1, the first semi-ring rubber ring 2 and the second semi-ring rubber ring 3 through medical glue 4.

Example 1

The raw materials of the rubber ring body comprise, by weight, 2% of a reinforcing agent, 0.5% of N-cyclohexyl-2-benzothiazole sulfonamide (CZ), 0.5% of N-tert-butyl-2-benzothiazole sulfonamide (NS), 0.3% of dipentamethylene tetrasulfide (DPTT) and 0.2% of tetrabenzylthiuram disulfide (TBzTD); 1% of activator zinc stearate, 3% of anti-aging agent 2-mercaptobenzimidazole zinc salt (ZMBI) and 1.5% of cross-linking agent sulfur; the balance is added with natural rubber, and the sum of the weight percentages of the components is 100 percent; the raw material of the first semi-ring rubber ring is that nano iron powder is added on the basis of the raw material of the rubber ring body, and the weight percentage is 5%; the raw material of the second semi-ring rubber ring is that nano ferroferric oxide magnetic powder is added on the basis of the raw material of the rubber ring body, and the weight percentage is 5%.

Example 2

The raw material of the rubber ring body differs from that of example 1 in that the accelerators N-cyclohexyl-2-benzothiazolesulfenamide (CZ) 1%, N-tert-butyl-2-benzothiazolesulfenamide (NS) 1%, dipentamethylenethiuram tetrasulfide (DPTT) 0.5%, tetrabenzylthiuram disulfide (TBzTD) 0.4%.

Example 3

The difference from example 2 is that the crosslinker is 1.3% sulphur.

Example 4

The difference from example 2 is that the reinforcing agent is white carbon black 3%.

Example 5

The difference from the embodiment 2 is that the antibacterial agent graphene oxide is added into the rubber body raw material, and the addition amount accounts for 1% of the total mass percentage of the raw material.

Comparison group

The difference from example 1 is that the rubber ring is a solid ring structure, the accelerator is N-cyclohexyl-2-benzothiazolesulfenamide (CZ) 1%, and dipentamethylenethiuram tetrasulfide (DPTT) 0.5%.

Tensile strength, elongation and hardness of the rubber ring were tested:

the tensile strength and the elongation at break of the rubber ring formed by the four accelerators are obviously improved compared with those of the rubber ring formed by the two accelerators under the matching action; the addition amount of the white carbon black is increased, so that the tensile strength is improved, but the hardness of the rubber ring is obviously increased; the addition of the antibacterial agent also contributes to the improvement of tensile strength, but the elongation at break is slightly reduced, and the hardness is not greatly changed; the ligation ring is sleeved at the root of the hemorrhoid, and the ligation ring is kept in a compressed state due to the attraction of the magnetic powder to the iron powder, so that the ligation ring is prevented from falling off.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The rubber ring for the ligation of the haemorrhoids is characterized by comprising an annular rubber ring body, wherein an annular groove is formed in the annular rubber ring body, one end of the annular groove is sealed, and the other end of the annular groove is open; one half of the annular groove is provided with a first half-ring rubber ring doped with iron powder, and the other half of the annular groove is provided with a second half-ring rubber ring doped with magnetic powder; the rubber ring body comprises 2-5% of reinforcing agent and 1.5-5% of accelerator by weight percentage; 1-2% of activating agent, 3-5% of anti-aging agent, 1-1.5% of cross-linking agent, 0.5-0.8% of antibacterial agent, and the balance of natural rubber, wherein the sum of the weight percentages of the components is 100%; the raw material of the first semi-ring rubber ring is that nano iron powder is added on the basis of the raw material of the rubber ring body, and the weight percentage is 3-10%; the raw material of the second semi-ring rubber ring is that nano magnetic powder is added on the basis of the raw material of the rubber ring body, and the weight percentage is 3-10%; the magnetic powder is nano ferroferric oxide particles or nano neodymium iron boron particles; the reinforcing agent is white carbon black, the activating agent is zinc stearate, the anti-aging agent is 2-mercaptobenzimidazole zinc salt (ZMBI), and the crosslinking agent is sulfur; the accelerator is a combination of a sulfenamide accelerator and a thiuram accelerator; the sulfenamide accelerator is 0.5-1% of N-cyclohexyl-2-benzothiazole sulfenamide (CZ) and 0.5-1% of N-tertiary butyl-2-benzothiazole sulfenamide (NS); the thiuram accelerator is 0.3-0.5% of dipentamethylenethiuram tetrasulfide (DPTT) and 0.2-0.4% of tetrabenzylthiuram disulfide (TBzTD); the antibacterial agent is one or more of chitosan, nano-silver, graphene or graphene oxide.

2. The hemorrhoid ligation rubber ring according to claim 1, wherein the open end face of the rubber ring body is bonded to the inner wall of the rubber ring body, the first half-ring rubber ring and the second half-ring rubber ring by medical glue.