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Dilation tube and vascular sheath

A technique for dilating tubes and blood vessels, applied in the direction of dilators, catheters, surgery, etc., can solve the problems of poor overall adaptability and inability to dilate blood vessels, and achieve the effect of providing adaptability and reducing vascular complications

Active Publication Date: 2021-04-13
SHANGHAI HEALING MEDICAL DEVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention lies in an existing vascular sheath, the diameter of the vascular sheath is relatively fixed, it cannot effectively expand blood vessels of different diameters, and it can pass through surgical instruments of different sizes, and the overall adaptability is poor.

Method used

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  • Dilation tube and vascular sheath
  • Dilation tube and vascular sheath
  • Dilation tube and vascular sheath

Examples

Experimental program
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Effect test

Embodiment 1

[0059] The present invention provides an expansion tube, which includes at least one deformation portion 11 distributed along its circumferential direction, and the first end 111 of any deformation portion 11 along the circumferential direction of the expansion tube is bent in an S direction toward the second end 112, The deformation part 11 can be stretched apart along the radial direction of the expansion tube under the radial expansion force of the expansion tube to be in an expanded state.

[0060] In the expansion tube of this structure, since the first end 111 of the deformation part 11 along the circumferential direction of the expansion tube is bent in an S direction toward the second end 112 thereof, the deformation part 11 will The deformation part 11 is in the initial state of bending in the direction of S, and the diameter of the inner hole of the expansion tube is the smallest; The wall exerts a radial expansion force on the inner wall of the deformation part 11, ...

Embodiment 2

[0075] An embodiment of the present invention provides an expansion tube, which differs from the expansion tube provided in Example 1 in that:

[0076] The expansion tube does not include the installation part 12, but only includes the deformation part 11, and the number of the deformation part 11 may be one, two, or more. When the deformation part 11 is one, the first end 111 and the second end 112 of the deformation part 11 form a closed loop. is stretched to change its bore diameter. When there are multiple deformed parts 11, the first end 111 of any two adjacent deformed parts 11 is connected to the second end 112 of another deformed part to form an annular pipe, and the expansion pipe is formed by deformed parts 11 along its circumference. , to further increase the radial deformation of the expansion tube.

Embodiment 3

[0078]This embodiment provides a vascular sheath, which includes an expansion tube, and the expansion tube is the expansion tube provided in Embodiment 1 or Embodiment 2.

[0079] The vascular sheath of this embodiment, because the vascular sheath can effectively expand blood vessels of different diameters, and allow surgical instruments of different sizes to pass through, provides the adaptability of the vascular sheath, not only in valve replacement surgery, but also for the femoral artery, The femoral vein can be effectively dilated for the passage of surgical instruments; blood vessels of other sizes can also be effectively dilated for the passage of corresponding surgical instruments.

[0080] like figure 2 As shown, in order to avoid the expansion of the expansion tube 1, the bending section of the deformation part 11 has a scratching effect on the blood vessel, as shown in figure 1 As shown, the vascular sheath also includes a deformable flexible tube 13 sleeved outsi...

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Abstract

The invention discloses a dilation tube and a vascular sheath. The dilation tube comprises at least one deformation part distributed in the circumferential direction of the dilation tube, and the first end, in the circumferential direction of the dilation tube, of each deformation part is bent towards the second end of the deformation part in the S direction, so that when the deformation parts are not subjected to radial dilation force of the dilation tube, the deformation parts are in an initial state; when a surgical instrument penetrates through an inner hole of the dilation tube, the peripheral wall of the surgical instrument applies radial dilation force to the inner walls of the deformation parts, and under the dilation force, the first ends and the second ends of the deformation parts are continuously spread in the directions away from each other along the peripheral wall of the surgical instrument, so that the inner hole of the dilation tube is expanded in the radial direction, the diameter of the inner hole of the dilation tube is increased, and the dilation tube is suitable for surgical instruments of different sizes to penetrate through the inner hole of the dilation tube; and meanwhile, in the initial state, the dilation tube is small in outer diameter and can be embedded into blood vessels of different sizes, so that the blood vessels of different sizes are effectively dilated, and the use adaptability of the dilation tube is improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a dilation tube and a vascular sheath. Background technique [0002] As an auxiliary guiding device for arteriovenous interventional surgery, vascular sheaths play an important role in interventional therapy. Through the vascular puncture technique, the vascular sheath is guided by the puncture guide wire to expand the skin muscle tissue and enter the lumen of the epidermal blood vessel, and then the puncture guide wire is taken out so that the distal end of the vascular sheath is placed in the blood vessel, thus establishing an in vitro A passage to the lumen of a blood vessel through which surgical instruments can pass. [0003] At present, artificial heart valve replacement surgery generally uses an interventional valve. When the interventional valve enters the human body through the femoral artery and femoral vein, a vascular sheath is required to establi...

Claims

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Application Information

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IPC IPC(8): A61M29/04A61M25/01
CPCA61M29/02A61M25/0194A61M2025/0197A61M2205/273A61M2205/0266A61M2210/12A61M2210/005
Inventor 陈晓黄韬刘冰冰林鹏张铭宇李阳王雪雪王银燕
Owner SHANGHAI HEALING MEDICAL DEVICES CO LTD
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