CN112137761B - Surgical visual intraoperative support system - Google Patents

Surgical visual intraoperative support system Download PDF

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Publication number
CN112137761B
CN112137761B CN202011028604.9A CN202011028604A CN112137761B CN 112137761 B CN112137761 B CN 112137761B CN 202011028604 A CN202011028604 A CN 202011028604A CN 112137761 B CN112137761 B CN 112137761B
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supporting rod
image
pore canal
stent
covered
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CN112137761A (en
Inventor
郭宏伟
畅怡
方方
魏柯
范舒雅
刘创
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Fuwai Hospital of CAMS and PUMC
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Fuwai Hospital of CAMS and PUMC
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/07—Stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2/07—Stent-grafts
    • A61F2002/077—Stent-grafts having means to fill the space between stent-graft and aneurysm wall, e.g. a sleeve

Abstract

The invention relates to the field of cardiovascular medical treatment, and particularly discloses a visual intraoperative stent conveying device and an intraoperative stent system thereof; the conveying device comprises a supporting rod, a probe end for detecting image information in real time, a transmission pipe for transmitting image signals and a display end for displaying images, wherein the probe end is connected with the supporting rod in sequence; an image pore canal is arranged in the supporting rod, the inlet end of the image pore canal is positioned at the rear section of the supporting rod, the outlet end of the image pore canal is positioned at the front end surface of the supporting rod, and the transmission pipe penetrates through the inlet end of the image pore canal and penetrates out of the outlet end of the image pore canal and then is connected to the probe end; the intraoperative stent system comprises a delivery device and a covered stent, wherein the covered stent comprises a metal net with a self-expansion structure and a covered film covering the metal net, and the metal net is configured to be compressed on a supporting rod through the covered film. The invention can realize the far-end visualization of the implantation of the covered stent, thereby reducing the operation risk.

Description

Surgical visual intraoperative support system
Technical Field
The invention relates to the field of cardiovascular medical treatment, in particular to a surgical visual intraoperative stent system.
Background
Aortic dissection is an acute aortic disease with urgent onset, rapid progress, high mortality, great operation difficulty and poor prognosis; the pathophysiology of aortic dissection is rupture of the aortic intima, and blood flow rushes into the middle layer of the aorta, resulting in cleavage of the middle layer of the aorta to form a true and false cavity; at present, the most commonly adopted operation mode for treating aortic dissection and aortic aneurysm is aortic arch replacement and stent trunk operation, wherein artificial four-branch vessels are adopted to replace aortic arch parts and three vessel branches (brachiocephalic trunk, left common carotid artery and left subclavian artery) under deep cryogenic stop circulation in the operation mode, and trunk stent implantation of the distal end of an aorta is performed simultaneously, the aortic arch is opened and stopped, and the distal end of the aortic arch is re-established and then is recovered.
At present, the most clinically used intraoperative stent system (also called a stent trunk vessel) in China generally comprises a conveying device and a covered stent conveyed and positioned by the conveying device, wherein the conveying device consists of a metal pull rod, a binding wire, a supporting rod and a handle, the covered stent comprises a metal net with a self-expanding structure and a covered film covering the metal net, the metal net is generally made of shape memory alloy (such as cobalt chromium alloy), the covered film is generally polyester, the covered film is generally stitched outside the metal net through a surgical non-absorptive suture, the metal net is configured to be compressed on the supporting rod through the covered film (the covered film is restrained by the binding wire), and the covered stent is positioned and released to a target position by releasing the compression force of the covered film (the operator operates the metal pull rod to loosen the binding wire); see, for example, patent CN 106618822A and CN 104622600A.
The inventor of the invention discovers in long-term practice that the intraoperative stent system has at least the following technical problems in clinical application: the guiding process of the covered stent through the conveying device has certain blindness, and as an operator can only see the proximal condition of the descending thoracic aorta and can not see the distal implantation condition, special guiding is often needed during operation or only the operator experience is used for judging; the former needs CT imaging data, or the femoral artery is preset with a guide wire in advance under the guidance of X-rays, and then the guide wire is guided into the trunk support, so that the CT imaging data needs to be completed in a hybridization operating room, the complexity of the operation is improved, and the popularization and the application are not facilitated; the latter carries the risk of damaging the descending aortic wall and misentering the false lumen through the intimal incision, which, once it occurs, will have the catastrophic consequences of sustained dilation rupture of the descending aorta.
Based on this, the above technical problems are to be solved in order to reduce the surgical risk.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a visual type intraoperative stent delivery device and a surgical visual type intraoperative stent system including the same, which can realize distal visualization of stent graft implantation, thereby reducing the risk of surgery.
In order to achieve the above purpose, the invention provides a visual intraoperative stent conveying device, which comprises a supporting rod, wherein the front section of the supporting rod is provided with a mounting part for mounting a tectorial membrane stent; the conveying device further comprises a probe end for detecting image information in real time, a transmission pipe for transmitting image signals and a display end for displaying images, which are connected in sequence; the image channel is arranged in the supporting rod, the inlet end of the image channel is positioned at the rear section of the supporting rod, the outlet end of the image channel is positioned at the front end face of the supporting rod, and the transmission pipe penetrates from the inlet end of the image channel and penetrates from the outlet end of the image channel and then is connected to the probe end.
As a further improvement of the technical proposal of the invention, the transmission tube is internally distributed with optical fiber bundles or wires.
As a further improvement on the technical scheme of the invention, the supporting rod is of a flexible rod structure which can be bent and shaped.
As a further improvement to the technical scheme of the invention, the conveying device further comprises an aspirator and an aspiration tube, wherein an aspiration channel for the aspiration tube to pass through is further arranged in the supporting rod, the inlet end of the aspiration channel is positioned at the rear section of the supporting rod, the outlet end of the aspiration channel is positioned at the front end surface of the supporting rod, one end of the aspiration tube is connected with the aspiration end of the aspirator, and the other end of the aspiration tube penetrates from the inlet end of the aspiration channel and passes out from the outlet end of the aspiration channel.
As a further improvement of the technical scheme of the invention, the inlet end of the image pore canal or/and the inlet end of the suction pore canal is positioned on the rear end surface of the supporting rod.
Meanwhile, the invention also provides a visual intraoperative support system for surgery, which comprises a conveying device provided with a support rod and a tectorial membrane support, wherein the front section of the support rod is provided with an installation part for installing the tectorial membrane support; the covered stent comprises a metal net with a self-expansion structure and a covered film covering the metal net, wherein the metal net is configured to be compressed on the mounting part through the covered film and to be positioned and released at a target position through releasing the compression force of the covered film;
the conveying device further comprises a probe end for detecting image information in real time, a transmission pipe for transmitting image signals and a display end for displaying images, which are connected in sequence; the image channel is arranged in the supporting rod, the inlet end of the image channel is positioned at the rear section of the supporting rod, the outlet end of the image channel is positioned at the front end face of the supporting rod, and the transmission pipe penetrates from the inlet end of the image channel and penetrates from the outlet end of the image channel and then is connected to the probe end.
As a further improvement to the technical scheme of the invention, the front end and the rear end of the coating film respectively exceed the front end and the rear end of the metal net by a certain length, and the length of the coating film is 150mm-280mm.
As a further improvement on the technical scheme of the invention, the supporting rod is of a flexible rod structure which can be bent and shaped.
As a further improvement to the technical scheme of the invention, the conveying device further comprises an aspirator and an aspiration tube, an aspiration channel for the aspiration tube to pass through is further arranged in the supporting rod, the inlet end of the aspiration channel is positioned at the rear section of the supporting rod, the outlet end of the aspiration channel is positioned at the front end face of the supporting rod, one end of the aspiration tube is connected with the aspiration end of the aspirator, and the other end of the aspiration tube penetrates from the inlet end of the aspiration channel and passes out from the outlet end of the aspiration channel.
As a further improvement of the technical scheme of the invention, the inlet end of the image pore canal or/and the inlet end of the suction pore canal is positioned on the rear end surface of the supporting rod.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a visual intraoperative stent conveying device and a surgical visual intraoperative stent system comprising the visual intraoperative stent conveying device, which creatively contributes to the addition of a visual component, wherein the visual component comprises a probe end, a transmission pipe and a display end, the transmission pipe is matched with an image pore canal of a supporting rod, so that the probe end is positioned in front of the front end surface of the supporting rod, image information of the advancing direction position of the supporting rod during operation can be detected in real time through the probe end, the image signal is transmitted to the display end outside the supporting rod through the transmission pipe and displayed, thereby realizing the far-end visualization of the implantation of a covered stent, the operator can implant the covered stent under the direct-view condition through the display end, effectively avoiding the damage of the descending aortic wall in the stent implantation process, preventing the stent from being wrongly inserted into a false cavity through an intima rupture, and greatly reducing the operation risk.
In addition, the implantation position of the stent is accurate and controllable, special guidance is not needed, and popularization and application are facilitated.
The invention improves the operation safety and the operation efficiency, reduces the operation cost, meets the social requirement, has strong practicability and is beneficial to promoting the development of cardiovascular medical technology.
Drawings
FIG. 1 is a schematic view of a visual intraoperative stent delivery device according to the present invention;
FIG. 2 is a schematic structural view of an intraoperative stent system of the present invention;
fig. 3 is a schematic structural view of the stent graft of the present invention in a released state.
Detailed Description
For a better understanding of the technical solution of the present invention, a further detailed description of the present invention will be provided below with reference to the drawings and to the specific examples; of course, the drawings are simplified schematic representations whose scale is not limiting on the patented products.
Example 1
As shown in fig. 1, the present embodiment provides a visual intraoperative stent delivery device, which comprises a support rod 1, and the delivery device further comprises a probe end 2 for detecting image information in real time, a transmission tube 3 for transmitting image signals, and a display end 4 for displaying images, which are sequentially connected; an image pore canal 5 is arranged in the supporting rod 1, the inlet end of the image pore canal 5 is positioned at the rear section of the supporting rod 1, the outlet end of the image pore canal 5 is positioned at the front end surface of the supporting rod 1, and the transmission pipe 3 penetrates from the inlet end of the image pore canal 5 and penetrates from the outlet end of the image pore canal 5 and then is connected with the probe end 2.
The intraoperative stent conveying device comprises a supporting rod 1, a metal pull rod 6, a binding wire 7 and other parts, and the use mode of the intraoperative stent conveying device is basically the same as that of the prior art, and can be seen in patents CN 106618822A and CN 104622600A. The support bar 1 may include a front section provided with a mounting portion 1a for mounting the stent graft and a rear section that may be used as an operation handle; the front end of the supporting rod 1 is also the far end during operation, namely the lower end in fig. 1; the support bar 1 may be a round bar structure, which may be 12mm in diameter, for example.
The main creative contribution of the visual intraoperative stent conveying device provided by the embodiment is that the visual component is additionally arranged, the visual component comprises a probe end 2, a transmission pipe 3 and a display end 4, wherein the transmission pipe 3 is matched with an image pore canal 5 of a support rod 1 (the image pore canal 5 is preferably a round hole, the diameter of the image pore canal can be 4mm for example), the probe end 2 is positioned in front of the front end surface of the support rod 1, image information of the advancing direction position of the support rod 1 during operation can be detected in real time through the probe end 2, and image signals are transmitted to the display end 4 outside the support rod 1 through the transmission pipe 3 and displayed, so that the far-end visualization of the implantation of the covered stent is realized, an operator can implant the covered stent under the direct-view condition through the display end 4, the damage to the wall of an aorta descending of the stent in the stent implantation process is effectively avoided, the stent is prevented from being wrongly inserted into a false cavity through an inner membrane rupture, and the operation risk is greatly reduced.
The visualization component may, for example, take the following structure:
firstly, the visualization assembly adopts a structure of a fiber endoscope, namely, light transmission and image transmission are completed by utilizing a combination of an optical fiber and a lens, at the moment, an optical fiber bundle is distributed in a transmission tube 3, the optical fiber bundle comprises a light beam and an image beam, the light beam is used for transmitting light generated by a cold light source to the surface of an observed object to illuminate the surface of the observed object, one end of the image beam is aligned with an ocular lens, the other end of the image beam is aligned with the surface of the observed object through an objective lens, and the condition of the surface of an organ can be visually observed through the ocular lens; at this time, the probe end 2 is an objective lens structure, and the display end 4 can be an eyepiece structure, or a display which converts an optical signal into an electrical signal and then performs amplification display;
secondly, the visualization component adopts the structure of an electronic endoscope, namely, light energy is converted into electric energy through a miniature image sensor (charge coupled device, CCD (charge coupled device)), then an image is reconstructed through an image processor and displayed on a monitor screen, at the moment, the probe end 2 is the CCD, the probe end 2 can be connected with a lighting unit (such as an LED lighting lamp), wires are distributed in the transmission tube 3, the electric energy and signals are transmitted through the wires, and the display end 4 is a display for amplifying and displaying after converting the light signals into electric signals.
In this embodiment, the support rod 1 is a flexible rod structure that can be bent and shaped. The support rod 1 can be made of a material (such as flexible ABS) with elasticity and flexibility; by adopting the structure, the supporting rod 1 can have higher adjustability, so that the shape of the descending aorta of the near end of different patients can be adapted, the shape is specifically shaped according to the shape, the implantation difficulty of the bracket is reduced, and the descending aorta is prevented from being damaged.
In this embodiment, the conveying device further includes an aspirator 8 and an aspiration tube 9, an aspiration channel 10 for passing through the aspiration tube 9 is further provided in the support rod 1, an inlet end of the aspiration channel 10 is located at a rear section of the support rod 1, an outlet end of the aspiration channel is located at a front end face of the support rod 1, one end of the aspiration tube 9 is connected with an aspiration end of the aspirator 8, and the other end of the aspiration tube penetrates from the inlet end of the aspiration channel 10 and passes from the outlet end of the aspiration channel 10. The suction duct 10 is arranged in parallel with the image duct 5, the suction duct 10 is matched with the suction tube 9, the suction duct 10 is preferably a circular duct structure, and the diameter of the suction duct 10 can be 5mm; the aspirator 8 can generate negative pressure, for example, can be a medical extracorporeal circulation machine; the suction tube 9 can be, for example, a medical silicone tube, a plurality of suction holes are distributed at the front end of the suction tube 9, and negative pressure generated by the suction device 8 is conducted through the suction tube 9 so as to absorb bleeding in an operation field area completely, so that the operation field of the implantation process of the stent is clear, the visibility of operation is further improved, and the operation safety is improved.
In this embodiment, the inlet end of the image channel 5 and the inlet end of the suction channel 10 are both located on the rear end face of the support rod 1. At this time, the image duct 5 and the suction duct 10 both penetrate through the support bar 1 along the length direction of the support bar 1, so that the duct can be conveniently processed and molded.
Example two
As shown in fig. 1 to 3: the embodiment provides a visual intraoperative stent system for surgery, which comprises a conveying device provided with a supporting rod 1 and a covered stent, wherein the front section of the supporting rod 1 is provided with a mounting part 1a for mounting the covered stent; the stent graft includes a metal mesh 12 of a self-expanding structure and a stent graft 13 covering the metal mesh 12, the metal mesh 12 being configured to be compressed on the mounting portion 1a by the stent graft 13 and to be positionally released at a target position by releasing the compressive force of the stent graft 13.
The conveying device comprises a metal pull rod 6, a binding wire 7 and other parts besides the support rod 1, and the use mode of the conveying device is basically the same as that of the prior art, and can be seen in patents CN 106618822A and CN 104622600A. The support bar 1 may include a front section provided with a mounting portion 1a for mounting the stent graft and a rear section that may be used as an operation handle; the front end of the supporting rod 1 is also the far end during operation, namely the lower end in fig. 1; the support bar 1 may be a round bar structure, which may be 12mm in diameter, for example.
The metal mesh 12 may be made of a shape memory alloy (e.g., cobalt chrome alloy), the cover 13 may be polyester, the cover 13 is stitched outside the metal mesh 12 by a surgical non-absorbable suture, the metal mesh 12 is configured to be compressed on the support rod 1 by the cover 13 (the cover 13 is constrained by the binding wire 7), and the cover stent is positioned and released at the target position by releasing the compression force of the cover 13 (the operator operates the metal pull rod 6 to loosen the binding wire 7).
The conveying device further comprises a probe end 2 for detecting image information in real time, a transmission tube 3 for transmitting image signals and a display end 4 for displaying images, which are connected in sequence; an image pore canal 5 is arranged in the supporting rod 1, the inlet end of the image pore canal 5 is positioned at the rear section of the supporting rod 1, the outlet end of the image pore canal 5 is positioned at the front end surface of the supporting rod 1, and the transmission pipe 3 penetrates from the inlet end of the image pore canal 5 and penetrates from the outlet end of the image pore canal 5 and then is connected with the probe end 2.
The main creative contribution of the visual intraoperative support system for surgery provided by the embodiment is that the visual component is additionally arranged, the visual component comprises a probe end 2, a transmission pipe 3 and a display end 4, wherein the transmission pipe 3 is matched with an image pore canal 5 of a support rod 1 (the image pore canal 5 is preferably a round hole, the diameter of the image pore canal can be 4mm for example), the probe end 2 is positioned in front of the front end surface of the support rod 1, the image information of the advancing direction position of the support rod 1 during operation can be detected in real time through the probe end 2, and the image signal is transmitted to the display end 4 outside the support rod 1 through the transmission pipe 3 and displayed, so that the far-end visualization of the implantation of the tectorial stent is realized, an operator can implant the tectorial stent under the direct-view condition through the display end 4, the damage of the descending aortic wall in the stent implantation process is effectively avoided, the stent is prevented from being wrongly implanted into a false cavity through an inner-membrane rupture, and the operation risk is greatly reduced.
The visualization component may, for example, take the following structure:
firstly, the visualization assembly adopts a structure of a fiber endoscope, namely, light transmission and image transmission are completed by utilizing a combination of an optical fiber and a lens, at the moment, an optical fiber bundle is distributed in a transmission tube 3, the optical fiber bundle comprises a light beam and an image beam, the light beam is used for transmitting light generated by a cold light source to the surface of an observed object to illuminate the surface of the observed object, one end of the image beam is aligned with an ocular lens, the other end of the image beam is aligned with the surface of the observed object through an objective lens, and the condition of the surface of an organ can be visually observed through the ocular lens; at this time, the probe end 2 is an objective lens structure, and the display end 4 can be an eyepiece structure, or a display which converts an optical signal into an electrical signal and then performs amplification display;
secondly, the visualization component adopts the structure of an electronic endoscope, namely, light energy is converted into electric energy through a miniature image sensor (charge coupled device, CCD (charge coupled device)), then an image is reconstructed through an image processor and displayed on a monitor screen, at the moment, the probe end 2 is the CCD, the probe end 2 can be connected with a lighting unit (such as an LED lighting lamp), wires are distributed in the transmission tube 3, the electric energy and signals are transmitted through the wires, and the display end 4 is a display for amplifying and displaying after converting the light signals into electric signals.
In this embodiment, the front and rear ends of the film 13 respectively exceed the front and rear ends of the metal mesh 12 by a certain length, and the length L of the film 13 is 150mm-280mm. In fig. 3, the front end of the covering film 13 is the upper end (near the proximal end in the operation), and the rear end of the covering film 13 is the lower end (near the distal end in the operation); the length of the front and rear ends of the cover film 13 beyond the front and rear ends of the metal mesh 12 may be, for example, 3mm to 10mm to form a metal-free sewing edge, the front end sewing edge being used for intra-operative sewing, and the rear end sewing edge being used for sewing in a secondary operation (thoracoabdominal aortic replacement) to facilitate the operation. The length L of the covering film 13 is designed to be 150-280 mm so as to ensure the requirement of each type of descending aortic lesion, and the length L of the covering film 13 can completely cover the descending aortic lesion so as to promote the remodelling of the distal aorta and reduce the risk of long-term re-operation; specifically, the length L of the covering film 13 can be 150mm, 180mm, 200mm, 220mm, 250mm or 280mm, and can reach the level of the eighth thoracic vertebra, so as to promote the distal shaping of the thoracic descending aorta and provide convenience for the replacement of the thoracic abdominal aorta in the second stage (provide a lower anastomosis plane); at this time, the length of the front-stage mounting portion 1a of the support rod 1 is adapted to the length L of the coating film 13.
In this embodiment, the support rod 1 is a flexible rod structure that can be bent and shaped. The support rod 1 can be made of a material (such as flexible ABS) with elasticity and flexibility; by adopting the structure, the supporting rod 1 can have higher adjustability, so that the shape of the descending aorta of the near end of different patients can be adapted, the shape is specifically shaped according to the shape, the implantation difficulty of the bracket is reduced, and the descending aorta is prevented from being damaged.
In this embodiment, the conveying device further includes an aspirator 8 and an aspiration tube 9, an aspiration channel 10 for passing through the aspiration tube 9 is further disposed in the support rod 1, an inlet end of the aspiration channel 10 is located at a rear section of the support rod 1, an outlet end of the aspiration channel is located at a front end face of the support rod 1, one end of the aspiration tube 9 is connected with an aspiration end of the aspirator 8, and the other end of the aspiration tube penetrates from the inlet end of the aspiration channel 10 and passes from the outlet end of the aspiration channel 10. The suction duct 10 is arranged in parallel with the image duct 5, the suction duct 10 is matched with the suction tube 9, the suction duct 10 is preferably a circular duct structure, and the diameter of the suction duct 10 can be 5mm; the aspirator 8 can generate negative pressure, for example, can be a medical extracorporeal circulation machine; the suction tube 9 can be, for example, a medical silicone tube, a plurality of suction holes are distributed at the front end of the suction tube 9, and negative pressure generated by the suction device 8 is conducted through the suction tube 9 so as to absorb bleeding in an operation field area completely, so that the operation field of the implantation process of the stent is clear, the visibility of operation is further improved, and the operation safety is improved.
In this embodiment, the inlet end of the image channel 5 and the inlet end of the suction channel 10 are both located on the rear end face of the support rod 1. At this time, the image duct 5 and the suction duct 10 both penetrate through the support bar 1 along the length direction of the support bar 1, so that the duct can be conveniently processed and molded.
Finally, it is pointed out that the principles and embodiments of the invention have been described herein with reference to specific examples, which are intended to be merely illustrative of the core idea of the invention, and that several improvements and modifications can be made to the invention without departing from the principles of the invention, which also fall within the scope of protection of the invention.

Claims (3)

1. A surgical visual intraoperative support system comprises a conveying device provided with a support rod and a covered stent, wherein the front section of the support rod is provided with a mounting part for mounting the covered stent;
the covered stent comprises a metal net with a self-expansion structure and a covered film covering the metal net, wherein the metal net is configured to be compressed on the mounting part through the covered film and to be positioned and released at a target position through releasing the compression force of the covered film; the method is characterized in that:
the conveying device further comprises a probe end for detecting image information in real time, a transmission pipe for transmitting image signals and a display end for displaying images, which are connected in sequence; an image pore canal is arranged in the supporting rod, the inlet end of the image pore canal is positioned at the rear section of the supporting rod, the outlet end of the image pore canal is positioned at the front end surface of the supporting rod, and the transmission pipe penetrates from the inlet end of the image pore canal and penetrates from the outlet end of the image pore canal and then is connected to the probe end;
the front end and the rear end of the covering film respectively exceed the front end and the rear end of the metal net by a certain length, and the length of the covering film is 150mm-280mm, so that the length of the covering film reaches the level of the eighth thoracic vertebra and completely covers the descending aortic lesion;
the conveying device further comprises an aspirator and an aspiration tube, an aspiration channel for the aspiration tube to pass through is further arranged in the supporting rod, the inlet end of the aspiration channel is positioned at the rear section of the supporting rod, the outlet end of the aspiration channel is positioned at the front end face of the supporting rod, one end of the aspiration tube is connected with the aspiration end of the aspirator, and the other end of the aspiration tube penetrates from the inlet end of the aspiration channel and passes out from the outlet end of the aspiration channel.
2. A surgical visualization intraoperative stent system as in claim 1, wherein:
the support rod is of a flexible rod structure which can be bent and shaped.
3. A surgical visualization intraoperative stent system as in claim 1, wherein:
the inlet end of the image pore canal or/and the inlet end of the suction pore canal is positioned on the rear end surface of the supporting rod.
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