Biodegradable blood vessel anastomosis ring/wheel and specialized surgical instrument thereof

A technology of anastomotic rings and blood vessels, which is applied in the field of medical surgical instrument implants and special surgical instruments, can solve the problems of long operation time anastomotic rings/anastomotic needles, etc., to avoid the risk of foreign body residue, high tensile strength, improve The effect of surgical efficiency

Pending Publication Date: 2017-08-25
SHANGHAI CHANGHAI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcoming of long operating time in the traditional suture anastomosis method and the shortcoming of the leftover non-absorbable anastomotic ring / anastomotic needle in the existing mechanical vascular anastomosis device, and provide a fast and safe vascular anastomosis and biodegradable vascular anastomosis device

Method used

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  • Biodegradable blood vessel anastomosis ring/wheel and specialized surgical instrument thereof
  • Biodegradable blood vessel anastomosis ring/wheel and specialized surgical instrument thereof
  • Biodegradable blood vessel anastomosis ring/wheel and specialized surgical instrument thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079]Taking standard rats (SD rats) as the experimental subjects, the experimental group uses the anastomosis device of the present invention for blood vessel anastomosis, and the control group uses traditional sutures for anastomosis. Cut off the abdominal aorta and perform end-to-end anastomosis. The anastomosis effect is evaluated by various detection methods, mainly as follows:

[0080] ①Biomechanical detection of anastomotic stoma: 8h, 24h, 14d and 30d after operation, cut blood vessel specimens about 1.0 cm in length including the anastomotic stoma, and measure the burst pressure of the anastomotic stoma with the burst pressure detection device of the anastomotic stoma. Tension tester was used to detect the breaking tension, and the comparison between the two groups was carried out to evaluate the safety and feasibility of the sutureless anastomosis method.

[0081] ②Evaluation of anastomotic stoma patency: color Doppler ultrasound and angiography were used to evaluate...

Embodiment 2

[0116] Taking New Zealand white rabbits as the experimental subjects, the experimental group uses the anastomosis device of the present invention for blood vessel anastomosis, and the control group uses traditional suture for anastomosis. The common carotid artery was cut off, and end-to-end anastomosis was performed. The matching effect of each detection means is the same as that of Example 1.

[0117] take as figure 1 , Figure 4 As shown, a biodegradable vascular anastomosis device includes a pair of coaxial anastomotic rings / wheels and special surgical instruments that cooperate with each other.

[0118] Such as figure 2 As shown, the small-diameter end of the truncated-conical support 11 is connected to the cylindrical support 12, and its angle α is 45°; the small-diameter end of the truncated-conical support 21 is connected to the cylindrical support 22, which The included angle β is 135°, and the included angles α and β are supplementary angles to each other.

[0...

Embodiment 3

[0135] Taking small experimental pigs as the experimental subjects, the experimental group uses the anastomosis device of the present invention for blood vessel anastomosis, and the control group uses traditional sutures for anastomosis. The femoral artery was cut off and end-to-end anastomosis was performed. The evaluation of the anastomosis effect by various detection means is the same as that in Example 1.

[0136] take as figure 1 , Figure 4 As shown, a biodegradable vascular anastomosis device includes a pair of vascular anastomotic rings / wheels and special surgical instruments that cooperate with each other and are automatically centered.

[0137] Such as figure 2 As shown, the small-diameter end of the truncated-conical support 11 is connected to the cylindrical support 12, and its angle α is 75°; the small-diameter end of the truncated-conical support 21 is connected to the cylindrical support 22, which The angle β is 105°, and the angles α and β are supplementar...

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Abstract

The invention discloses a biodegradable vascular anastomotic device, a special surgical instrument and a method of use thereof, which are used for anastomosis between human blood vessels, between artificial blood vessels, or between human blood vessels and artificial blood vessels. The vascular anastomosis device consists of a The first anastomotic ring/wheel and the second anastomotic ring/wheel are coaxial with each other, and the anastomotic ring/wheel includes a blood vessel support stent, a clamping stent, and anastomotic needles distributed circumferentially at the free end of the vascular support stent. The anastomosis surface of the blood vessel anastomosis device of the present invention has a coaxial geometric structure, the anastomosis is efficient, the anastomosis area is large, the success rate of the operation is improved and the collapse of the anastomotic stoma is reduced. The present invention is made of biodegradable materials. Through reasonable structural design, the vascular anastomotic ring/wheel can be degraded by the human body after operation, and maintain a relatively complete structure during the degradation process. Maintain the corresponding effective support time to maintain the function of the vascular anastomosis ring/wheel, and avoid the risk of foreign body residue caused by traditional mechanical anastomosis methods. The special instrument provided by the invention integrates the functions of clamping and anastomosis, which simplifies the operation process and improves the operation efficiency.

Description

technical field [0001] The invention relates to a medical surgical instrument implant and its special surgical instrument, in particular to a blood vessel anastomosis device, a special surgical instrument and its use method. Background technique [0002] Vascular anastomosis technique is considered as the cornerstone of microsurgery, which involves a wide range of disciplines, and the quality of anastomosis is related to the success or failure of the operation. Vascular anastomosis methods can be divided into needle and thread suture method and sutureless anastomosis method. The traditional method of small blood vessel anastomosis is end-to-end intermittent suture method, but this method has many shortcomings: cumbersome operation, time-consuming , restenosis after small vessel anastomosis, etc. Sutureless anastomosis can be summarized as: set-in anastomosis, thermocoagulation anastomosis, adhesive anastomosis and mechanical anastomosis. Vascular invaginal anastomosis incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/115
CPCA61B17/115A61B2017/00004A61B2017/1103A61B2017/1107A61B2017/1132
Inventor 许硕贵
Owner SHANGHAI CHANGHAI HOSPITAL
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