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Anti-injury medical vessel dilator and simulation method of hemangiectasis

A technique for vasodilation and simulating blood vessels, which is applied in dilators, other medical devices, and drug devices. Blood coagulation thrombosis, use fast effect

Pending Publication Date: 2018-06-22
THE FIRST AFFILIATED HOSPITAL OF MEDICAL COLLEGE OF XIAN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems that the existing vasodilator used in the operation of autologous arteriovenous fistula has poor expansion effect, easily causes blood vessel damage, and leads to low success rate of operation, the present invention provides an anti-injury medical vasodilation Device and simulated blood vessel dilation method, which can rapidly expand the surgical blood vessel and not damage the blood vessel during the operation

Method used

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  • Anti-injury medical vessel dilator and simulation method of hemangiectasis
  • Anti-injury medical vessel dilator and simulation method of hemangiectasis

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: as figure 1 As shown, an anti-trauma medical blood vessel dilator device includes a flexible catheter 3, a syringe connector 2 provided with an inlet end of the flexible catheter and a cone 1 arranged at the outlet end of the flexible catheter, the syringe connector, the flexible catheter and the cone sequentially connected. The cone part 1 is a hollow tapered tube, and a plurality of diversion holes 4 are arranged on the side wall. Wherein, the flexible conduit and the syringe connector are connected in one piece, and the flexible conduit and the taper are connected in one piece. The syringe connector is used to connect the syringe. When the dilator is used, a syringe containing heparin saline is first connected to the syringe connector, and then the lumen and cone of the flexible catheter are filled with heparin saline for heparinization, and then inserted using the cone connected to the flexible catheter containing heparin saline Into the blood vesse...

Embodiment 2

[0031] Embodiment 2: In order to ensure that blood vessels can fully expand without damage during the operation, the length of the flexible catheter is generally designed to be 4-12 cm, and the length of the tapered part is designed to be 5-8 cm.

Embodiment 3

[0032] Embodiment 3: as figure 2 As shown, in order to inject heparin saline evenly, the diversion holes are distributed in layers, the diversion holes between adjacent layers are separated by 0.8-1 cm, and each layer has three diversion holes.

[0033] Both the flexible catheter 3 and the syringe connector 2 are made of non-toxic, sterile, and human-friendly polymer materials (such as polyvinyl chloride), with good light transmission and high elastic modulus. Good resilience, not easy to deform, not easy to break.

[0034] The flexible conduit and the cone are integrated, the cone has an anti-scratch obtuse angle design, and the outer wall of the tube is smooth without burrs. The syringe connector 2 has a fixed size and can be connected with syringes of different capacities, and the connector is tightly connected to the syringe, and the connector and the syringe will not fall off when the syringe is pushed by different pressures.

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Abstract

The invention relates to an anti-injury medical vessel dilator and simulation method of hemangiectasis. The anti-injury medical vessel dilator comprises a flexible catheter, an injector connector arranged at the inlet end of the flexible catheter and a conical part at the outlet end of the flexible catheter; the injector connector, the flexible catheter and the conical part are connected orderly,the conical part is a hollow conical pipe; diameter of the conical part is gradually enlarged from the free end of the conical part to the joint of the flexible catheter; multiple guide flow holes arearranged on the side wall of the conical part. The invention solves the technical problems that the hemangiectasis section applied to the operation process of autologous internal arteriovenous fistula plasty at present is poor in dilating effect, easy to cause blood vessel injury, and low in operation success rate. The vessel dilator provided by the invention can rapidly dilate operation vessel and not damage blood vessels during the operation process.

Description

technical field [0001] The invention relates to an anti-injury medical blood vessel dilator and a simulated blood vessel expansion method, which is a device used for dilating surgical blood vessels during autogenous arteriovenous fistula formation in the field of nephrology. Background technique [0002] With the gradual improvement of medical diagnosis and treatment technology, the number of patients diagnosed with uremia is increasing year by year, and patients often face follow-up long-term renal replacement therapy. In the choice of the three renal replacement therapies (hemodialysis, peritoneal dialysis and kidney transplantation), most patients tend to prefer hemodialysis instead. An urgent problem facing patients undergoing long-term hemodialysis is the need to establish long-term hemodialysis access. At present, there are three kinds of long-term hemodialysis access, first: autogenous arteriovenous fistula, which is characterized by small trauma, low cost, long-term...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/00A61M31/00
CPCA61M29/00A61M31/00
Inventor 张文静孙吉平张亚莉吕佳李燕
Owner THE FIRST AFFILIATED HOSPITAL OF MEDICAL COLLEGE OF XIAN JIAOTONG UNIV
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