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CN-118217055-B - Conveyor and conveying system

CN118217055BCN 118217055 BCN118217055 BCN 118217055BCN-118217055-B

Abstract

The invention relates to a conveyor and a conveying system, wherein the conveyor comprises a core tube assembly, an outer sheath assembly sleeved outside the core tube assembly, a first accommodating part is defined between the distal end of the outer sheath assembly and the core tube assembly along the circumferential direction, an inner rod is arranged inside the core tube assembly, the distal end of the inner rod penetrates out of the distal end of the core tube assembly, an accommodating head is connected to the distal end of the inner rod, the accommodating head and the distal end of the outer sheath assembly are axially arranged at intervals, and a second accommodating part is arranged at the proximal end of the accommodating head. The present invention aims to provide a conveyor that operates directly and quickly.

Inventors

  • PENG FENG

Assignees

  • 深圳市健心医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20221221

Claims (12)

  1. 1. A conveyor for conveying medical devices, the conveyor comprising: A handle assembly; a core tube assembly, a proximal end of the core tube assembly being connected to the handle assembly; the sheath assembly is sleeved outside the core tube assembly, and a first accommodating part is defined between the distal end of the sheath assembly and the core tube assembly along the circumferential direction; an inner rod disposed inside the core tube assembly, a distal end of the inner rod passing out of a distal end of the core tube assembly; The accommodating head is connected to the distal end of the inner rod, the accommodating head and the distal end of the outer sheath assembly are axially arranged at intervals, and the proximal end of the accommodating head is provided with a second accommodating part; The handle assembly comprises a first shell and a second shell, wherein the first shell and the second shell are detachably connected, so that the first shell and the second shell form a hollow tubular structure, and a containing cavity is formed between the first shell and the second shell; the conveyor further comprises: a first drive assembly disposed within the receiving chamber and coupled to the sheath assembly, the first drive assembly configured to drive the sheath assembly proximally relative to the core tube assembly to release the proximal end of the medical device; The first drive assembly includes: a first elastic member connected to the outer sheath assembly in a compressed state; a control member movably disposed within the receiving cavity and cooperating with the proximal end stop of the outer sheath assembly such that the control member is switchable between a first position and a second position; in the first position, the proximal end of the sheath assembly abuts against the control member, and the first elastic member is in a compressed state to apply an elastic force to the sheath assembly toward the proximal end side; in the second position, the proximal end of the sheath assembly is separated from the control member, and the first resilient member extends and drives the sheath assembly proximally.
  2. 2. The conveyor according to claim 1, characterized in that the conveyor further comprises: And a second drive assembly coupled to the proximal end of the inner rod for driving the inner rod to move axially relative to the core tube assembly to push the containment head away from the core tube assembly and release the distal end of the medical device.
  3. 3. The conveyor of claim 1, wherein the outer sheath assembly comprises: An outer sheath; the matching piece is sleeved at the proximal end part of the outer sheath tube and comprises a first stop part positioned at the distal end and a second stop part positioned at the proximal end; Wherein the proximal end of the first elastic element in a compressed state abuts against the first stop portion; The control piece is matched with the second stop part in a stop mode.
  4. 4. The conveyor according to claim 3, wherein the fitting comprises a first step structure, a second step structure and a third step structure which are sequentially arranged from a distal end to a proximal end and have decreasing diameters, a distal end surface of the first step structure forms the first stop part, the second stop part is a protruding structure arranged on an outer peripheral surface of a proximal end of the third step structure, and a proximal end of the sheath tube penetrates the fitting from the distal end of the fitting and is fixedly connected with the fitting.
  5. 5. The conveyor of claim 4, wherein the inner wall of the second housing is provided with a first rib extending in a circumferential direction, the first rib being located at a distal end of the control member, the mating member passing through the first rib and being axially movable relative to the first rib, the second stepped structure being capable of abutting the distal end of the first rib when the mating member is moved proximally, and the second stop being capable of abutting the proximal end of the first rib when the mating member is moved distally.
  6. 6. The conveyor of claim 5, wherein one of the first ribs and the third stepped structure is provided with a first guide groove, and the other of the first ribs and the third stepped structure is provided with a first guide rib slidably engaged with the first guide groove, and the first guide rib and the first guide groove each extend in the axial direction.
  7. 7. The conveyor of claim 1, wherein the conveyor comprises a conveyor belt, The control piece is provided with a first guide hole, the proximal end of the outer sheath component can axially penetrate through the first guide hole, the inner wall of the first guide hole is provided with a boss, and the boss is matched with the proximal end stop of the outer sheath component; the control piece is also provided with a second elastic piece, and the second elastic piece is in a compressed state and drives the control piece to move vertically and axially, so that the proximal end of the outer sheath component abuts against the boss.
  8. 8. The conveyor of claim 2, wherein the conveyor comprises a conveyor belt, The second driving assembly includes: the screw rod is fixedly connected with the proximal end of the inner rod; And the knob is rotatably matched with the thread of the screw rod and can drive the screw rod to move along the axial direction.
  9. 9. The conveyor of claim 8, further comprising a guide member comprising an axially extending and sequentially disposed and communicating connection bore and a second guide bore, the connection bore being distally located relative to the second guide bore, the proximal end of the core tube assembly being nested and secured within the connection bore, the distal end of the screw extending into the second guide bore.
  10. 10. The conveyor of claim 9, wherein the conveyor is configured to move, The screw is provided with a second guide groove extending along the axial direction; The inner wall of the second guide hole is provided with a second guide convex rib which is in sliding fit with the second guide groove.
  11. 11. The conveyor of claim 1, wherein the core tube assembly comprises: a core tube; the fixing piece is connected with the distal end of the core tube; The medical device comprises a fixing piece, a sheath assembly, a first containing part, a second containing part, a plurality of tooth-shaped protrusions and a connecting rod, wherein the first containing part is defined between the fixing piece and the distal end of the sheath assembly along the circumferential direction, the tooth-shaped protrusions are arranged along the circumferential direction of the fixing piece at intervals in sequence and are used for hooking and connecting with the proximal end of the medical device.
  12. 12. A delivery system, comprising: the conveyor according to any one of claims 1-11; the medical instrument, the proximal end of medical instrument is acceptd in first acceptd portion, the distal end of medical instrument acceptd in second acceptd portion.

Description

Conveyor and conveying system Technical Field The invention relates to the technical field of interventional medical equipment, in particular to a conveyor and a conveying system. Background The heart valve refers to a valve between the atria and ventricles or between the ventricles and arteries, which includes the mitral valve (located between the left ventricle and the left atrium), the tricuspid valve (located between the right ventricle and the right atrium), the pulmonary valve (located at the right ventricular outlet), and the aortic valve (located at the left ventricular outlet). Currently, there are two main treatments for heart valve dysfunction. Taking the aortic valve as an example, valve replacement under surgical direct vision and transcatheter aortic valve replacement can be classified. The surgical replacement is to cut the aorta of the patient under the condition of external circulation, remove the aortic valve of the patient, implant a artificial valve, suture the implanted valve on the aortic valve ring, stop the circulation finally, close the chest and finish the operation, and the catheter replacement is to install the valve at the tail end of the catheter in a curled state under the radiation environment and expand the valve to the functional size after reaching the implantation position so as to replace the diseased heart valve. However, in either method, there are practical problems such as long extracorporeal circulation time and high risk of surgery, and the inability to visually see the prosthetic valve through the catheter-replacement surgery in a non-direct view state, and inconvenience in positioning the prosthetic valve directly and rapidly to the treatment site. Disclosure of Invention In view of the above, the present invention aims to provide a conveyor that can be operated directly and quickly. The aim is achieved by the following technical scheme: according to a first aspect of the present invention, there is provided a conveyor for conveying medical devices, the conveyor comprising: A core tube assembly; the sheath assembly is sleeved outside the core tube assembly, and a first accommodating part is defined between the distal end of the sheath assembly and the core tube assembly along the circumferential direction; an inner rod disposed inside the core tube assembly, a distal end of the inner rod passing out of a distal end of the core tube assembly; The accommodating head is connected to the distal end of the inner rod, the accommodating head and the distal end of the outer sheath assembly are axially arranged at intervals, and the proximal end of the accommodating head is provided with a second accommodating part. Further, the conveyor also includes a first drive assembly coupled to the outer sheath assembly for driving the outer sheath assembly proximally relative to the core tube assembly to release the proximal end of the medical device, and/or a second drive assembly coupled to the proximal end of the inner rod for driving the inner rod axially relative to the core tube assembly to push the containment head away from the core tube assembly and release the distal end of the medical device. Further, the first driving assembly comprises a first elastic piece which is connected with the outer sheath assembly in a compressed state, a control piece which is matched with a proximal end stop of the outer sheath assembly so that the control piece can be switched between a first position and a second position, the proximal end of the outer sheath assembly is propped against the control piece in the first position, the first elastic piece is in a compressed state to apply elastic force to the outer sheath assembly towards the proximal end side, and the proximal end of the outer sheath assembly is separated from the control piece in the second position, and the first elastic piece stretches and drives the outer sheath assembly to move towards the proximal end. The sheath assembly further comprises a sheath tube, a matching piece sleeved on the proximal end portion of the sheath tube, wherein the matching piece comprises a first stopping portion located at the distal end and a second stopping portion located at the proximal end, the proximal end of the first elastic piece in a compressed state abuts against the first stopping portion, and the control piece is in stopping fit with the second stopping portion. Further, the fitting comprises a first step structure, a second step structure and a third step structure, wherein the first step structure, the second step structure and the third step structure are sequentially arranged from the distal end to the proximal end, the diameters of the first step structure are gradually decreased, the distal end face of the first step structure is provided with a first stop part, the second stop part is a protruding structure arranged on the peripheral face of the proximal end of the third step structure, and the proximal end of the sheath tube