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Sheath device

A sheath and sleeve technology, applied in the direction of balloon catheters, etc., can solve problems such as shedding, long storage time, and damage

Active Publication Date: 2021-10-19
LIFETECH SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] like Figure 1-b As shown, during packaging, the balloon catheter 12' covered with the protective sheath 11' is usually placed in the spiral coil 20' for preservation, but if the balloon catheter 12' is placed in the spiral coil 20 If the storage time is too long, after the balloon catheter 12' is taken out from the coil 20', the balloon catheter 12' and the protective sheath 11' outside it are prone to irreversible bending. At this time, if the manual Straightening the balloon catheter 12' can easily damage the balloon catheter 12' and its protective sheath 11'
In addition, the protective sheath 11' in the prior art is easy to fall off from the balloon catheter 12' when it is loaded into the coil tube 20' and taken out of the coil tube 20', and the exposed balloon catheter 12' is easily damaged and the phenomenon of pollution
[0005] Therefore, it is necessary to propose a new sheath device for the technical problem that the existing protective sheath cannot provide good protection when the balloon catheter returns to a straight state from a bent state.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0042] Embodiment one: if Figure 2-a with Figure 2-b As shown, the first embodiment of the present invention provides a sheath device 100 sheathed on the outside of the catheter assembly 200 . The sheath device 100 includes an elastic sheath assembly 10, the elastic sheath assembly 10 includes a first sleeve 20 and an elastic member 30 connected to the first sleeve 20, the first sleeve 20 can In the bent state, when the restraining force acting on it disappears, the elastic member 30 makes the first sleeve 20 rebound from the bent state to the straight state.

[0043] When the first sleeve 20 is in a straight state, the elastic member 30 is in a natural state. At this time, the elastic member 30 does not undergo elastic deformation. When stored in the coil and bent, the elastic member 30 bends together with the first sleeve 20 and undergoes elastic deformation. When the first sleeve 20 is taken out of the coil, the binding force acting on the first sleeve 20 disappears. At ...

Embodiment 2

[0055] Embodiment two: if Figure 3-a with Figure 3-b As shown, the second embodiment of the present invention provides a sheath device 100, which is substantially the same as the sheath device in Embodiment 1, except that the elastic member 30 includes at least one elastic piece, and the elastic piece is fixed on the first on casing 20.

[0056] exist Figure 3-a In the shown embodiment, the elastic member 30 includes two elastic pieces, and the two elastic pieces are arranged symmetrically along the radial direction of the first sleeve 20. Each elastic piece is in the shape of a long strip with a flat surface, and the elastic pieces are attached to the first sleeve 20. On the outer wall of the sleeve 20 and extending in a direction parallel to the longitudinal central axis of the first sleeve 20 , the shrapnel can be integrally fixed on the first sleeve 20 by glue bonding, hot-melt welding, laser welding and the like.

[0057] Since the shrapnel is integrally fixed on th...

Embodiment 3

[0060] Example 3: Please refer to Figure 4-a , the third embodiment of the present invention provides a sheath device 100, which is substantially the same as the sheath device in Embodiment 1, the sheath device 100 includes an elastic sheath assembly 10, and the elastic sheath assembly 10 includes a first sleeve 20 and an elastic member 30 connected to the first sleeve 20.

[0061] The difference between the third embodiment and the first embodiment is that the sheath device 100 also includes a second sleeve 50, and the second sleeve 50 is detachably sheathed outside the elastic sheath assembly 10. When the second sleeve 50 is sheathed When outside the elastic sheath assembly 10, the second sleeve 50 radially compresses the elastic sheath assembly 10, so that the elastic sheath assembly 10 and the balloon catheter closely fit to improve the connection between the elastic sheath assembly 10 and the balloon catheter strength, preventing the elastic sheath assembly 10 from fall...

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Abstract

The invention discloses a sheath device, which is sheathed outside a catheter assembly. The sheath device includes an elastic sheath assembly, and the elastic sheath assembly includes a first sleeve and an elastic sleeve connected to the first sleeve. The first sleeve can be in a bent state under the action of the restraining force, and when the restraining force disappears, the elastic member makes the first sleeve rebound from the bent state to a straight state. Beneficial effects of the present invention: under the action of the restraining force, the first sleeve of the sheath device of the present application can be in a bent state, and when the restraining force disappears, the elastic member automatically makes the first sleeve rebound from the bent state to a straight state , to avoid manually straightening the first sleeve.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a sheath device. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] Such as Figure 1-a As shown, the balloon catheter 12' includes a catheter and a balloon connected to the catheter. Since the balloon is easily damaged, when the balloon catheter 12' is assembled, a protective sheath 11' is often placed on the balloon to protect the balloon. The balloon of balloon catheter 12' is not damaged during assembly and retrieval. [0004] Such as Figure 1-b As shown, during packaging, the balloon catheter 12' covered with the protective sheath 11' is usually placed in the spiral coil 20' for preservation, but if the balloon catheter 12' is placed in the spiral coil 20 If the storage time is too long, after the balloon catheter 12' is taken out from the coil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M25/10
CPCA61M25/10
Inventor 张雄龙汉吴星宇房金锋
Owner LIFETECH SCI (SHENZHEN) CO LTD