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conveyor

A conveyor and guide rod technology, applied in the field of medical equipment, to achieve safe and effective release and timely locking

Active Publication Date: 2021-08-27
LIFETECH SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a delivery device with the function of releasing the positioning and locking for the problem of positioning and locking of the interventional implant during the release process.

Method used

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  • conveyor
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see figure 1 , figure 1 It is a schematic structural diagram of the conveyor 100 of an embodiment. The conveyor 100 includes a sheath core tube 12, a push rod 13, a sheath tube 14, a guide rod 16, and a tip 11 arranged at the distal end of the sheath core tube 12, which are sheathed coaxially and sequentially from the inside to the outside. A handle 15 connected to the distal end of the rod 16 , a sliding handle 18 sheathed on the guide rod 16 , and a positioning locking device 17 at least partially accommodated inside the sliding handle 18 .

[0054] Both the terminal head 11 and the sheath core tube 12 are parts with a cavity in the center, the terminal head 11 can be a TIP head, and the distal end of the end head 11 and the sheath core tube 12 are solidly integrated as a channel for the guide wire, so as to ensure that there are The guidewire feeder 100 can smoothly enter blood vessels under the guidance of the guidewire. The push rod 13 is a tubular component, th...

Embodiment 2

[0066]The difference between Embodiment 2 and Embodiment 1 is that the positioning locking device 17 in Embodiment 2 also includes a guide rod sleeve 174 (as shown in FIG. There are two opposite sliders 1724 (as shown in FIG. 6( b )). Please also refer to Figure 6(a)-Figure 6(c) , the guide rod sleeve 174 is sleeved on the surface of the guide rod 16, and an opening 1742 is provided on the side wall of the guide rod sleeve 174, and a guide rail is respectively provided at both ends of the opening 1742 along the axial direction of the guide rod sleeve 174 1743; the tooth block 172 is sleeved on the surface of the guide rod sleeve 174, and the second engagement structure 1721 on the baffle plate 1723 corresponds to the opening 1742 of the guide rod sleeve 174, so that the second engagement structure 1721 can pass through the opening 1742 and connect with the guide rod The first engagement formation 162 of the rod 16 engages. The two sliding blocks 1724 on the baffle plate 172...

Embodiment 3

[0072] The difference between embodiment 3 and embodiment 1 is that the tooth block 175 included in the conveyor in embodiment 3 is different from the tooth block 172 in embodiment 1. Correspondingly, the first block on the guide rod 16 in this embodiment The engaging structure 163 is different from the first engaging structure 162 in the first embodiment. Please also refer to Figure 7(a)-Figure 7(b) In this embodiment, the tooth block 175 is approximately a hollow cuboid, including a U-shaped support 1751 and a baffle 1752 connected to the open end of the support 1751 . The supporting member 1751 includes a bottom plate and two side plates respectively connected to two ends of the bottom plate. The second engaging structure 1753 of the tooth block 175 is disposed on the inner sidewalls of the two side panels of the support member 1751 or only on the inner sidewall of one of the side panels. The plurality of first engaging structures 163 of the guide rod 16 surround the out...

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Abstract

The invention relates to a conveyer for conveying implants, comprising a handle, a guide rod and a sliding handle, one end of the guide rod is connected with the handle, the other end runs through the slide handle, and the outer surface of the guide rod is provided with a plurality of shafts along the guide rod. To the first meshing structure spaced apart from each other, the conveyor also includes a positioning locking device arranged in the sliding handle. The positioning locking device includes a tooth block and an elastic member. The tooth block is sleeved on the guide rod and the tooth block is provided with The second engagement structure, the elastic component cooperates with the tooth block so that when the elastic component is not compressed or partially compressed, the first engagement structure and the second engagement structure are engaged, and the implant is in a release lock state; and when the elastic component is compressed The implant is in a releasable state when it is compressed until the first engagement structure and the second engagement structure disengage. The delivery device of the present invention realizes the gradual release and locking of the implant by positioning, locking and unlocking the sliding handle.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a conveyor with a release positioning and locking function. Background technique [0002] In recent years, interventional therapy for cardiovascular diseases has become an important means of curing patients. Interventional implants are classified into stents, occluders and other small medical devices that are implanted into human or animal bodies. Taking stents as an example, with the continuous development of interventional technology in the medical field, the advantages of using covered stents in the treatment of aortic aneurysm and arterial dissection have become increasingly prominent. Covered stent refers to an artificial blood vessel that adapts to the size of the blood vessel. It is mainly composed of a membrane and a stent that supports the membrane. The membrane is generally made of polyester or e-PTFE membrane, and the supporting bracket is mainly made of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/95
CPCA61F2/9517A61F2/95
Inventor 张军强
Owner LIFETECH SCI (SHENZHEN) CO LTD
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