Elephant trunk bracket capable of blocking blood

A blood-blocking and elephant-trunk technology, applied in the field of elephant-trunk stents, can solve problems such as blood coagulation damage, serious complications, and internal environment disorders, and achieve the effects of reducing postoperative complications, avoiding deep hypothermia, and excellent blocking effect

Pending Publication Date: 2019-06-18
FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, deep hypothermic circulatory arrest can cause a series of unavoidable problems such as internal environment disorder, coagulation damage, acute liver and kidney dysfunction, gastrointestinal dysfunction, spinal cord injury, etc., resulting in poor postoperative recovery, serious complications and even death of patients

Method used

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  • Elephant trunk bracket capable of blocking blood
  • Elephant trunk bracket capable of blocking blood
  • Elephant trunk bracket capable of blocking blood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 and figure 2 As shown: the elephant trunk stent capable of blocking blood in this embodiment includes a stent main body 1, a main body lining 2 and a film-coated tube 3, the stent main body 1 is sleeved on the main body liner 2, and the film-covered tube 3 Covering the stent main body 1; the stent main body 1 is configured to be compressed on the main body lining 2 through the coated tube 3, and the stent main body 1 is positioned and released on the target lesion by releasing the compressive force of the coated tube 3 Location. The elephant trunk stent with the above structure is well known to those skilled in the art. The existing CRONUS intraoperative stent system produced by Minimally Invasive Endovascular Medical Technology (Shanghai) Co., Ltd. has this structure. In addition, please refer to the Chinese patent CN 106618822B and CN 104622600B; therefore, the specific structures, principles and materials of the stent main body 1, the main body li...

Embodiment 2

[0029] Such as image 3 As shown, in this embodiment, different from Embodiment 1, the structure of the main body lining 2 can be further optimized. At this time, the main body lining 2 includes an outer cylinder 2a and an inner core 2b, and the outer cylinder 2a and The shaft sleeve is arranged outside the inner core 2b, and the inner core 2b can move axially along the outer cylinder 2a; the outer cylinder 2a passes through the through hole and is connected with the strut 51; the distal end of the inner core 2b A blood blocking plug 22 is provided, and when the distal end of the inner core 2b moves to the position of the blood blocking device, the top surface of the blood blocking plug 22 blocks the through hole and the inner cavity of the outer cylinder 2a. By pulling the inner core 2b, the movement of the inner core 2b along the outer cylinder 2a can be controlled; the hemostatic plug 22 can adopt a structure similar to that of the fixed head 21, and can also perform simila...

Embodiment 3

[0031] Such as Figure 4As shown, in this embodiment, on the basis of the elephant trunk support structure in Embodiment 1 or Embodiment 2, the elephant trunk support can be further optimized, that is, the end of the support rod 51 close to the support main body 1 passes through the connecting rod 52 Connected to the main body 1 of the bracket, the strut 51 and the connecting rod 52 are elastically connected, and the strut 51 is separated from the inner lining 2 of the main body to drive the hemostatic membrane 4 to fold toward the connecting rod 52 . The connecting rod 52 can be integrally fixed to the stent main body 1, but it cannot affect the shrinkage and deformation of the stent main body 1; the strut 51 and the connecting rod 52 are preferably located under the hemostatic membrane 4 to support and position the hemostatic membrane 4; The membrane 4 is released and drives the strut 51 to expand to achieve hemostasis; the strut 51 and the connecting rod 52 are preferably i...

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PUM

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Abstract

The invention discloses an elephant trunk bracket capable of blocking blood. The elephant trunk bracket comprises a bracket body, a body liner and a film-covered tube, the bracket body sleeves the body liner, and the film-covered tube covers the bracket body; the bracket body is configured to be compressed onto the body liner through the film-covered tube, and the bracket body is positioned and released to the target lesion location by releasing compression force of the film-covered tube; a blood blocking device for being synchronously compressed and released with the bracket body is arrangedin the bracket body, and after the blood blocking device is released, the blood flow in the bracket body is blocked. According to the elephant trunk bracket capable of blocking the blood, the deep hypothermic circulatory arrest time is shortened advantageously, postoperative complications are greatly reduced, and the surgical effect is improved.

Description

technical field [0001] The invention relates to a medical device, in particular to an elephant trunk bracket capable of blocking blood. Background technique [0002] Total aortic arch replacement plus stent elephant trunk surgery (Sun's surgery) is widely used in the treatment of thoracic aortic aneurysm and acute and chronic type A aortic dissection. recognized by more and more experts. The deep hypothermia and circulatory arrest technique must be used for this operation, that is, the whole body needs to be cooled during the operation. When the temperature of the nasopharynx drops to 18-20°C, unilateral selective cerebral perfusion can be performed through the axillary artery or innominate artery. Circulation arrest in the lower body means that there is no blood perfusion in the organs perfused by the descending aorta, including the spinal cord, liver, kidneys, and digestive tract. The proximal end and the distal end of the arch are anastomosed, and then the perfusion of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12
Inventor 彭博孙晓刚郭宏伟史艺魏以桢
Owner FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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