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A kind of ultra-high elastic medical PVC pump tube material and its preparation method and application

A PVC resin and pump tube technology, applied in the field of medical equipment, can solve the problems of infusion accuracy attenuation, poor elasticity, poor resilience of PVC hoses that cannot be used as medical pump tubes, etc., achieving high resilience, excellent ultra-high elasticity, The effect of excellent mechanical strength and fatigue resistance

Active Publication Date: 2021-02-26
浙江天原医用材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the poor resilience of general PVC hoses, they cannot be used as medical pump tubes. Currently, the pump tubes used for infusion pumps on the market will suffer from repeated extrusion during use. After a certain period of use, fatigue will occur and the elasticity will change. Poor results in attenuation of infusion accuracy

Method used

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  • A kind of ultra-high elastic medical PVC pump tube material and its preparation method and application
  • A kind of ultra-high elastic medical PVC pump tube material and its preparation method and application
  • A kind of ultra-high elastic medical PVC pump tube material and its preparation method and application

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preparation example Construction

[0066] Second aspect of the present invention also provides the preparation method of medical PVC pump tubing material, at least comprises the following steps:

[0067] a. Under the condition of 30℃~60℃, first add PVC resin, HIPS, PS, main plasticizer, lubricant, heat stabilizer, antioxidant and light stabilizer into the mixer and fully blend for 20~60 minutes. Add modified PVC and auxiliary plasticizer to the mixer, and continue blending at 60°C to 100°C for 1 to 5 hours to obtain a mixture;

[0068] b. Under the condition of 170°C to 190°C, the mixture is melted and extruded to obtain mixed pellets;

[0069] c. Add the mixed pellets to the extruder, melt and extrude, and cool after pulling to form a pump tube;

[0070] d. The pump tube in c above is irradiated with gamma rays for 0.5-12 hours, and the irradiation dose is 25 kGy.

[0071] In some preferred embodiments, the conditions in the above step a of this application are: 40°C to 55°C, PVC resin, HIPS, PS, main plasti...

Embodiment 1

[0081] Embodiment 1 of the present invention provides a super-elastic medical PVC pump tubing material and its preparation method and application. In parts by weight, the components at least include:

[0082]

[0083]

[0084] The above-mentioned main plasticizer is DOP, the auxiliary plasticizer is epoxy soybean oil, the lubricant is zinc stearate, the heat stabilizer is lanthanum stearate, the antioxidant is antioxidant 264, and the light stabilizer is Ciba HALS type 944; when the melt index test condition is 200°C / 5kg, the melt index of the HIPS is 3.6g / 10min, and the melt index of PS is 1.17g / 10min.

[0085] The preparation method of the highly elastic medical PVC pump pipe material comprises the following steps:

[0086] a. At 30°C, first add PVC resin, HIPS, PS, main plasticizer, lubricant, heat stabilizer, antioxidant, and light stabilizer to the mixer and fully blend for 20 minutes, then add modification to the mixer PVC, auxiliary plasticizer, continue blending...

Embodiment 2

[0092] Embodiment 2 of the present invention provides a super-elastic medical PVC pump tube material and its preparation method and application. In parts by weight, the components at least include:

[0093]

[0094] The above-mentioned main plasticizer is DOP, the auxiliary plasticizer is epoxy linseed oil, the lubricant is zinc stearate, the heat stabilizer is lanthanum stearate, the antioxidant is antioxidant 264, and the light stabilizer is Ciba HALS type 944; when the melt index test condition is 200°C / 5kg, the melt index of the HIPS is 6.5g / 10min, and the melt index of PS is 3.8g / 10min.

[0095] The preparation method of the highly elastic medical PVC pump pipe material comprises the following steps:

[0096] a. At 40°C, first add PVC resin, HIPS, PS, main plasticizer, lubricant, heat stabilizer, antioxidant, and light stabilizer to the mixer and fully blend for 30 minutes, then add modification to the mixer PVC, auxiliary plasticizer, continue blending at 70°C for 2 ...

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Abstract

The invention discloses an ultrahigh-elasticity medical PVC (polyvinyl chloride) pump tube material which at least comprises the following ingredients in parts by weight: 80-100 parts of PVC resin, 5-15 parts of HIPS (high impact polystyrene), 1-10 parts of PS (polystyrene), 10-50 parts of primary plasticizer, 5-30 parts of secondary plasticizer, 1-10 parts of lubricant, 1-10 parts of heat stabilizer, 0.1-1.4 parts of antioxidant and 0.01-0.1 parts of light stabilizer.

Description

technical field [0001] The invention is applied in the field of medical devices, and in particular relates to a super-elastic medical PVC pump tube material and a preparation method and application thereof. Background technique [0002] The extracorporeal circulation circuit is mainly used for cardiopulmonary surgery and hemodialysis, etc., and belongs to the third class of medical devices. With the continuous development of medical technology and material science, more and more extracorporeal circulation techniques are applied clinically. The realization of these extracorporeal circulation requires pipelines to provide access, and the pump tube is the main power part that provides blood flow, so its performance has a great influence on the therapeutic effect. The medical infusion pump is an instrument that can accurately control the infusion flow rate to ensure that the drug speed is uniform, the dose is accurate, and the drug enters the patient's body safely. It is mostly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L51/04C08L25/06C08L91/00C08K5/00C08K5/12C08K5/11C08K5/098C08K5/20C08J3/28C08J3/24
CPCC08J3/246C08J3/28C08J2327/06C08J2425/06C08J2451/04C08J2491/00C08K5/00C08K5/098C08K5/11C08K5/12C08K5/20
Inventor 王恩洪路中伟吴维新
Owner 浙江天原医用材料有限公司
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