CN211486135U

CN211486135U - Visual guide sheath

Info

Publication number: CN211486135U
Application number: CN201921439138.6U
Authority: CN
Inventors: 黄宏辉; 傅达江
Original assignee: Zhuhai Pusheng Medical Science & Technology Co ltd
Current assignee: Zhuhai Pusen Medical Technology Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-09-15
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a visual guide sheath for solving the problem that the insertion depth and position of the guide sheath are not easy to be held, which comprises an inner core and an outer sheath sleeved outside the inner core, wherein the front end of the inner core is provided with a camera device; the camera device arranged in the inner core can capture images around the inner core for display, so that the insertion depth and position of the inner core and the outer sheath can be known, and the inner core and the outer sheath are safer in clinical use.

Description

Visual guide sheath

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a visual guide sheath.

Background

When the ureter soft lens is used for carrying out the lithotripsy operation of the urinary system clinically, a ureter guide sheath is needed, and the ureter guide sheath consists of an outer sheath used for a channel and an expansion tube core used for guiding. When the ureteral guide sheath is inserted, the outer sheath is inserted into the ureter together under the guidance of the dilating tube core. In fact, the ureter is narrow and bent, and the ureter guide sheath is not observed by a monitoring device when being placed, so that the problems of perforation, breakage, bleeding and the like of the ureter mucosa are easy to occur, and even complications can occur in serious cases, and the patient is injured. Intubation by observing the ureteral access sheath using radiation monitoring has been known, but radiation increases the X-ray exposure of patients and doctors, and causes health risks to both doctors and patients.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a visual guide sheath which can observe the insertion position in real time, does not increase the pipe diameter and is safer in use.

The utility model relates to a visual guide sheath, include: the inner core, be provided with the working channel who runs through in the inner core, the inner core front end is provided with camera device, camera device is located the side of working channel.

The visual guide sheath has at least the following beneficial effects: the camera device is arranged in the inner core, so that the surrounding environment of the guide sheath can be monitored in real time, the position of the guide sheath is known, the operation of a doctor is facilitated, and the safety is higher in clinical use.

In some embodiments, the central axis of the working channel is not coaxial with the central axis of the inner core, the front end of the working channel is located on one side of the inner core, and the camera device is arranged on the other side of the inner core. The front end of the working channel inclines towards the outer peripheral surface of the inner core, a space for accommodating the installation of the camera device can be reserved on the inner core body, the outer diameter cannot be increased when the camera device is arranged in the inner core, the risk that the ureter is torn when the guide sheath is placed into the inner core is reduced, and the discomfort of a patient can be reduced.

In some embodiments, the working channel is vertically disposed in the inner core, and the axis of the working channel is parallel to the axis of the inner core. The working channel is eccentrically arranged in the inner core, so that the installation space of the camera device can be reserved while the diameter of the inner core is not increased.

In some embodiments, the working channel is obliquely arranged in the inner core, and the axis of the working channel is intersected with or out of plane with the axis of the inner core. After the working channel is inclined, the front end of the working channel is positioned on one side of the inner core, so that the diameter of the inner core is not increased, and meanwhile, the installation space of the camera device is reserved.

In some embodiments, the inner core outer sheath is provided with an outer sheath, the outer sheath is provided with a liquid channel, and the inner core and the outer sheath are assembled to form the guide sheath body. The sheath can play the effect of expanding the passageway and protecting the inner core for it can be smooth to put into, and the liquid channel can carry out feed liquor and flowing back, can increase the service function of guide sheath, and the practicality is better.

In some embodiments, the front end of the inner core is provided with a conical expansion section with the diameter gradually decreasing forwards, the expansion section extends out of the outer sheath, and the camera device is arranged in the expansion section. The expansion section can play the effect of expansion ureter for the guide sheath gets into the human body more smoothly, reduces the injury to the patient.

In some embodiments, at least one light source is disposed beside the camera device, and the light source is a light guide fiber. The light source can illuminate the space in the advancing direction of the guide sheath, the brightness of the picture is increased, and the imaging quality is improved.

In some embodiments, the light-conducting optical fiber is located within the inner core body with its front end flush with the front end of the inner core or within the flared section body. The optical fiber has small volume, and the wall thickness of the sheath is reduced, thereby playing a role in reducing the diameter of the guide sheath.

In some embodiments, the light-conducting optical fiber is disposed within the outer sheath body with a front end of the light-conducting optical fiber flush with a front end of the outer sheath. The optical fiber is small in size, and the diameter of the inner core is reduced, so that the function of reducing the diameter of the guide sheath is achieved.

In some embodiments, the camera device is further connected with a cable, a cable channel is arranged in the inner core, the cable is placed in the cable channel, a connecting channel extending outwards is arranged at the tail end of the inner core, and the connecting channel is communicated with the cable channel. The cable channel protects the cable, prevents camera device's connection failure, connects the chamber way and is used for drawing forth the cable, and it is more convenient to be connected with external equipment, can not hinder and grip.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the described figures are only some embodiments of the invention, not all embodiments, and other designs and figures can be obtained by those skilled in the art without inventive effort, based on these figures:

fig. 1 is a cross-sectional view of a first embodiment of the present invention;

fig. 2 is a cross-sectional view of a second embodiment of the present invention;

fig. 3 is a cross-sectional view of a third embodiment of the present invention;

fig. 4 is a cross-sectional view of a fourth embodiment of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, a visual guide sheath comprises an inner core 2, wherein a working channel 3 is arranged in the inner core 2, and the working channel 3 is used for passing through a medical instrument such as a guide wire or a biopsy forceps for treatment and examination. The sheath 1, the sheath 1 cover is established outside inner core 2, the terminal of sheath 1 is provided with liquid channel 6, liquid channel 6 extends to the rear side direction of sheath 1, and liquid channel 6 is hollow and communicates with the inside of sheath 1, and liquid channel 6 is used for the feed liquor or imbibition. The outer sheath 1 and the inner core 2 are assembled in place to form a guide sheath body, and after the guide sheath is inserted into the body, the medicine can be introduced or the body fluid can be sucked out, so that the use function of the guide sheath is increased, and more use requirements can be met.

It should be noted that in the embodiments of the present specification, the term "front end" refers to a direction in which the introducer sheath is away from the operator when in use, and correspondingly, the term "distal end" refers to a direction in which the introducer sheath is close to the operator when in use.

The front end of the inner core 2 is provided with a camera device 4, the camera device 4 is located beside the working channel 3, the camera device 4 can be a wired camera shooting assembly or a wireless camera shooting assembly, referring to the attached

drawings

1 and 2, the camera device 4 in the first embodiment and the second embodiment is a wired camera shooting assembly, the wired camera shooting assembly is connected with a cable, and the cable is connected with an external display device for image transmission. The inner core 2 is provided with a cable channel 7, the cable channel 7 is arranged beside the working channel 3, and the cable is placed in the cable channel 7 and used for protecting the cable. The tail end of the inner core 2 is provided with a connecting cavity channel extending outwards, the connecting cavity channel is communicated with the cable channel 7, the connecting cavity channel is used for leading out a cable, a catheter sheath is convenient to connect with external equipment, and the cable extends out of the side of the catheter sheath to enable the holding feeling to be better.

Referring to fig. 3 and 4, the camera device 4 in the third and fourth embodiments is a wireless camera module, the wireless camera module includes an image acquisition module and a wireless transmission module, the image acquisition module records and obtains image information, stores the image information and transmits the image information to the wireless transmission module, the wireless transmission module processes the image information into an electromagnetic wave signal and sends the electromagnetic wave signal to the monitoring display device, and the camera device 4 can be purchased in the market or manufactured and assembled by itself.

The lens of the camera device 4 faces the front end of the inner core 2, preferably, the lens of the camera device 4 is flush with the front end face of the inner core 2, the camera device 4 shoots in the advancing direction of the inner core 2 during working, the environment in the advancing direction of the inner core 2 can be observed, and a doctor can conveniently operate the guide sheath. The lens is flush with the inner core 2 to obtain a larger visual angle, and in other embodiments, the lens end surface protrudes forward or is recessed backward relative to the front end surface of the inner core 2.

Camera device 4 sets up by working channel 3, does not increase the diameter of inner core 2 simultaneously in order to place camera device 4, working channel 3's axis is skew with the axis of inner core 2, lets working channel 3 front end be located one side in inner core 2, lets inner core 2 front end leave the space that holds camera device 4, can also avoid the increase of inner core 2 diameter simultaneously. Referring to the first, third and fourth embodiments in the accompanying

drawings

1, 3 and 4 of the specification, the central axis of the working channel 3 is parallel to the central axis of the inner core 3, the working channel 3 is eccentrically and parallelly arranged in the inner core 2, referring to the second embodiment in the accompanying drawings 2 of the specification, the central axis of the working channel 3 is intersected with the central axis of the inner core 3, the working channel 3 is eccentrically and obliquely arranged in the inner core 2, the front end of the working channel 3 is located on one side of the inner core 2, and the other side of the inner core 2 is used for installing the camera 4. In addition, the diameter of the front end of the working channel 3 in the first embodiment, the third embodiment and the fourth embodiment is slightly smaller than that of the tail end, so that the volume of the parallel section of the working channel 3 and the image pickup device 4 can be reduced, and the installation space of the image pickup device 4 is further increased.

Referring to the attached drawings 1 to 4 in the specification, the front end of the inner core 2 is provided with an expansion section, the expansion section extends out of the outer sheath 1, the expansion section is in a conical shape with the diameter of the front end gradually decreasing forwards, and the camera device 4 is arranged in the expansion section. The expansion section can play the effect of expanding the pipeline, struts the cavity of shrink or fold, can make things convenient for the guide sheath to put into, avoids the guide sheath to cause the damage to the human body.

Referring to the attached figures 3 and 4 of the specification, at least one light source 5 is arranged beside the camera device 4, and the light source 5 is preferably a light guide optical fiber which is small in size, good in performance and capable of achieving the effect of reducing the diameter of the inner core 2. The end connection of leaded light optic fibre has external light source, and leaded light optic fibre throws light on to leaded light optic fibre's front end with external light source's light transmission, throws light on for camera device 4's shooting to improve the quality of image, the picture is more clear easily discerning, makes things convenient for the doctor to observe.

Referring to the third embodiment in the attached fig. 3 of the specification, the light guide optical fiber is located in the inner core 2 body, and the front end of the light guide optical fiber is flush with the front end of the inner core 2 or located in the expanding section body, referring to the fourth embodiment in the attached fig. 4 of the specification, the light guide optical fiber is located in the outer sheath 1, and the front end of the light guide optical fiber is flush with the front end of the outer sheath 1. In some other embodiments, the light source 5 may also be an LED lamp, the cable of which is disposed within the inner core 2 or the outer sheath 1.

When the medical guide sheath is used, the outer sheath 1 is sleeved on the inner core 2, the outer sheath 1 and the inner core 2 are connected and assembled into the guide sheath, a doctor operates the guide sheath to insert the guide sheath into a body, and the expansion section expands a body channel in the using process, so that the outer sheath 1 with a larger diameter can conveniently enter the body. During the use with external light source irradiation at the guide sheath end, utilize the light of leaded light optic fibre transmission external light source, leaded light optic fibre throws light on to guide sheath advancing direction, camera device 4 catches the image of guide sheath advancing direction, and camera device 4 transmits the image for display device, makes things convenient for the doctor to observe the condition in guide sheath the place ahead, can reduce the operation degree of difficulty of guide sheath, reduces the risk that causes the damage to patient, improves the security of treatment.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited thereto, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A visual introducer sheath, comprising: comprises that

The inner core is internally provided with a through working channel, the front end of the inner core is provided with a camera device, the central axis of the working channel is not coaxial with the central axis of the inner core, the front end of the working channel is positioned at one side of the inner core, and the camera device is arranged at the other side of the inner core;

the sheath is sleeved outside the inner core.

2. A visual introducer sheath as defined in claim 1, wherein: the working channel is vertically arranged in the inner core, the axis of the working channel is parallel to the axis of the inner core, and the camera device is arranged beside the front end of the working channel.

3. A visual introducer sheath as defined in claim 1, wherein: the working channel is obliquely arranged in the inner core, the axis of the working channel is intersected with or out of plane with the axis of the inner core, and the camera device is arranged beside the front end of the working channel.

4. A visual introducer sheath as defined in claim 1, wherein: the front end of the inner core is provided with a conical expansion section with the diameter gradually reduced forwards, the expansion section extends out of the outer sheath, and the camera device is arranged in the expansion section.

5. A visual introducer sheath as defined in claim 1, wherein: at least one light source is arranged beside the camera device, and the light source is a light guide optical fiber.

6. A visual introducer sheath as defined in claim 5, wherein: the light guide optical fiber is positioned in the inner core body, and the front end of the light guide optical fiber is flush with the front end of the inner core or positioned in the expansion section body.

7. A visual introducer sheath as defined in claim 5, wherein: the light guide optical fiber is arranged in the outer sheath body, and the front end of the light guide optical fiber is flush with the front end of the outer sheath.

8. A visual introducer sheath as defined in claim 1, wherein: the sheath is provided with a liquid channel.

9. A visual introducer sheath as defined in claim 1, wherein: the camera device is further connected with a cable, a cable channel is arranged in the inner core, and the cable is placed in the cable channel.