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CN-120000381-B - Valve delivery system and method of using the same

CN120000381BCN 120000381 BCN120000381 BCN 120000381BCN-120000381-B

Abstract

The invention provides a valve conveying system and a using method thereof, wherein the valve conveying system comprises a first shell, a sheath tube assembly, a bending control assembly, a second shell, a proximal end assembly, a hanging lug assembly and a distal end assembly, wherein the sheath tube assembly and the bending control assembly are arranged in the first shell, a positioning piece release tube can move along the axial direction of the first shell, the bending control assembly can control the bending of the positioning piece release tube, a distal end release tube of the distal end assembly and a proximal end release tube of the proximal end assembly are arranged in the positioning piece release tube, the distal end release tube is connected with a distal hanging lug seat, the proximal end release tube is connected with the proximal hanging lug seat, a valve stent is loaded on the hanging lug assembly, the second shell is rotated to circumferentially position the valve stent, and the proximal end assembly and the distal end assembly are controlled to axially deliver and release the valve stent. The valve delivery system realizes delivery and release of the valve stent through one-time access, improves the fault tolerance and accuracy of valve stent release, and is convenient to operate.

Inventors

  • HE CAIFAN
  • GUO YULIN
  • WEI YONGQIANG

Assignees

  • 上海臻亿医疗科技有限公司

Dates

Publication Date
20260508
Application Date
20250303

Claims (8)

  1. 1. A valve delivery system comprising a delivery device and a release device interconnected, the release device being movable relative to the delivery device; the delivery device comprises a first shell, a sheath tube assembly and a bending control assembly, wherein the sheath tube assembly and the bending control assembly are arranged in the first shell, a positioning piece release tube of the sheath tube assembly is used for accommodating a valve bracket and can move along the axial direction of the first shell, and the bending control assembly is used for controlling the bending of the positioning piece release tube; The sheath tube assembly comprises a positioning piece knob and a positioning piece tube seat, the positioning piece release tube penetrates through the first shell and the second shell, the distal end of the positioning piece release tube is a variable-diameter large end, the proximal end of the positioning piece release tube is fixedly connected with the positioning piece tube seat, and the positioning piece tube seat is movably arranged in the first shell; The bending control assembly comprises a bending control pipe, a moving part, a bending control knob and a bending control pipe seat, wherein the proximal end of the bending control pipe is fixedly connected with the bending control pipe seat, the distal end of the bending control pipe penetrates through the positioning part pipe seat and is arranged in the positioning part release pipe, the moving part is movably connected with the bending control pipe seat, one end of the bending control part is connected with the moving part, the other end of the bending control part is connected with the distal end of the bending control pipe, and the bending control knob is fixedly connected with the bending control pipe seat; The release device comprises a second shell, a proximal end component, a hanging lug component and a distal end component, wherein the second shell is connected with the first shell, the proximal end component, the hanging lug component and the distal end component are respectively arranged in the second shell, a distal end release tube of the distal end component, a proximal end release tube of the proximal end component and a hanging lug tube of the hanging lug component are respectively arranged in the positioning piece release tube, and the valve bracket is loaded at the distal ends of the proximal end component, the hanging lug component and the distal end of the distal end component; The proximal assembly comprises a proximal socket, the distal end of the proximal release tube is connected with the proximal end of the hanger assembly, the proximal end of the proximal release tube is fixedly connected with the proximal socket, and the proximal socket can move in the second housing along the axial direction of the second housing.
  2. 2. The valve delivery system of claim 1, wherein the distal end of the proximal delivery tube is a tapered large end.
  3. 3. The valve delivery system of claim 1, wherein the proximal assembly further comprises a safety clip, the second housing having a through hole therethrough for gripping the proximal hub, the safety clip for limiting the proximal hub.
  4. 4. The valve delivery system of claim 1, wherein the hanger assembly comprises a hanger tube, a proximal hanger seat, a distal hanger seat, and a hanger tube seat, wherein one end of the hanger tube is fixedly connected to the hanger tube seat, the proximal hanger seat is sleeved outside the hanger tube, and the distal hanger seat is sleeved outside the hanger tube and is fixedly connected to the hanger tube; Or the near-end hanging lug seat is sleeved outside the hanging lug pipe and fixedly connected with the hanging lug pipe, and the far-end hanging lug seat is sleeved outside the hanging lug pipe.
  5. 5. The valve delivery system of claim 4, wherein the retainer tube holder is fixedly connected with a first guide block, the first housing having a first guide slot that mates with the first guide block, the first guide slot being disposed along an axial direction of the first housing; And/or the suspension loop pipe seat is also fixedly connected with a second guide block, the second shell is also provided with a second guide groove which is arranged corresponding to the second guide block, and the second guide block is matched with the second guide groove to enable the suspension loop pipe seat to be radially fixed relative to the second shell; and/or, fixedly connected with third guide block on the moving part, the first casing be equipped with third guide block complex third guide slot, the third guide slot is followed the length direction setting of first casing.
  6. 6. The valve delivery system of claim 4, wherein the distal assembly comprises a distal hub and a distal knob, the proximal end of the distal release tube being fixedly coupled to the distal end of the distal hub, the distal knob being threadably coupled to the distal hub, rotation of the distal knob driving the distal hub to move the distal release tube axially to release the distal end of the valve holder.
  7. 7. The valve delivery system of claim 6, wherein the distal delivery tube comprises a tip portion, a connecting segment, and an inner tube, the inner tube and the connecting segment being fixedly connected to the tip portion, respectively, the connecting segment being circumferentially disposed about the inner tube, a receiving area being formed between the connecting segment and the inner tube, an end of the connecting segment being spliced with the positioner delivery tube.
  8. 8. The valve delivery system of any one of claims 1-7, wherein the distal end of the second housing is nested in the proximal end of the first housing, the valve delivery system further comprising a locking knob for defining the relative position of the first housing and the second housing.

Description

Valve delivery system and method of using the same Technical Field The invention relates to the technical field of medical appliances, in particular to a valve conveying system and a using method thereof. Background The aortic valve opens as the left ventricle contracts to pump blood into the aorta. If the aortic valve is not closed, blood may leak from the aorta back to the left ventricle as the left ventricle relaxes to fill with blood from the left atrium. Reflux and leaking blood is called reflux and can lead to heart failure and intrapulmonary effusion in severe cases. Drug treatment is not very effective in slowing heart failure progression, and most are treated in the form of replacement prosthetic valves. The existing devices for treating main valve reflux are not more in the market, mainly comprise a split structure design of a femoral artery access passage and a catheter, namely an ultra-long valve catheter, an introduction sheath tube, a conveying handle and the like, are scattered and messy as a whole, the implanted prosthetic valve is released far and near at the same time basically, uncontrollable risks exist, and fine adjustment treatment cannot be carried out after the distal end is released preferentially. Disclosure of Invention Accordingly, the present invention is directed to a valve delivery system, which can solve the problems in the prior art, and achieve delivery and release of a valve stent through a single access, so as to improve the fault tolerance and release accuracy of valve stent release, and has a simple structure and convenient operation. The invention provides a valve delivery system, which comprises a delivery device and a release device which are connected with each other, wherein the release device can move relative to the delivery device, the delivery device comprises a first shell, a sheath tube assembly and a bending control assembly, the sheath tube assembly and the bending control assembly are arranged in the first shell, a positioning piece release tube of the sheath tube assembly is used for accommodating a valve bracket and can move along the axial direction of the first shell, the bending control assembly is used for controlling the bending of the positioning piece release tube, the release device comprises a second shell, a proximal end assembly, a hanging ear assembly and a distal end assembly, the second shell is connected with the first shell, the proximal end assembly, the hanging ear assembly and the distal end assembly are respectively arranged in the second shell, a distal end release tube of the distal end assembly, a proximal end release tube of the proximal end assembly and a hanging ear tube of the hanging ear assembly are respectively arranged in the positioning piece release tube, and the valve bracket is respectively loaded on the distal end of the proximal end assembly, the distal end assembly and the distal end assembly of the distal end assembly. In an embodiment, the sheath tube assembly comprises a positioner knob and a positioner tube seat, the positioner release tube penetrates through the first shell and the second shell, the distal end of the positioner release tube is a variable-diameter large end, the proximal end of the positioner release tube is fixedly connected with the positioner tube seat, and the positioner tube seat is movably arranged in the first shell. In an embodiment, the bend control assembly comprises a bend control pipe, a moving part, a bend control knob and a bend control pipe seat, wherein the proximal end of the bend control pipe is fixedly connected with the bend control pipe seat, the distal end of the bend control pipe penetrates through the tube seat of the positioning part and is arranged in the release tube of the positioning part, the moving part is movably connected with the tube seat of the bend control pipe, one end of the bend control part is connected with the moving part, the other end of the bend control part is connected with the distal end of the bend control pipe, and the bend control knob is fixedly connected with the bend control pipe seat. In an embodiment, the proximal assembly comprises a proximal socket, the distal end of the proximal release tube is a tapered large end, the distal end of the proximal release tube is connected to the proximal end of the hanger assembly, the proximal end of the proximal release tube is fixedly connected to the proximal socket, and the proximal socket is movable in the second housing along the axial direction of the second housing. In an embodiment, the proximal assembly further comprises a safety tube clamp, the second housing is provided with a through hole, the safety tube clamp passes through the through hole to clamp the proximal tube seat, and the safety tube clamp is used for limiting the proximal tube seat. In an embodiment, the hanger assembly comprises a hanger tube, a proximal hanger seat, a distal hanger seat and a hanger tube seat, wherein one end o