CN112263285A

CN112263285A - Percutaneous two-channel endoscope sleeve device

Info

Publication number: CN112263285A
Application number: CN202011249589.0A
Authority: CN
Inventors: 郑晓青; 顾宏林; 黄勇兄; 梁国彦; 梁昌详; 昌耘冰
Original assignee: Guangdong General Hospital
Current assignee: Guangdong General Hospital
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-01-26

Abstract

The invention provides a percutaneous two-channel endoscope sleeve device which comprises an outer sleeve, wherein the outer sleeve is provided with a through accommodating cavity, the outer sleeve is provided with an upper end and a lower end, the upper end of the outer sleeve is provided with a pipeline interface, the pipeline interface is communicated with the accommodating cavity, and one side of the lower end of the outer sleeve is provided with a skirt part protruding downwards and outwards. During operation, a doctor can hold the outer sleeve, the skirt portion protruding from the side face can pull away soft tissue or nerve tissue to avoid blocking a visual field or damaging nerves, the soft tissue or the nerve tissue can be effectively blocked and protected, the pipeline interface can be connected with a water pipe, and water flows out from the tail end of the outer sleeve and can flush the soft tissue or the nerve tissue, so that the safety of the operation can be improved.

Description

Percutaneous two-channel endoscope sleeve device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a percutaneous double-channel endoscope sleeve device.

Background

In the percutaneous minimally invasive surgery process, a doctor usually inserts a percutaneous double-channel endoscope sleeve into a surgery position, and pulls open soft tissues blocking the visual field by using a working sleeve or pulls open the nerve tissues to avoid damaging the nerve tissues, and an intervertebral foramen mirror main mirror containing nucleus pulposus forceps, a perfusion channel, a light source and a camera can be inserted into the working sleeve to perform surgery operation.

The side of the end of the existing working cannula is generally smooth, and soft tissue or nerve tissue is easy to slide through the bottom of the working cannula during the operation process to block the visual field or be damaged by surgical equipment.

Therefore, there is still a need to provide a new percutaneous dual-channel endoscope cannula device to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a percutaneous double-channel endoscope sleeve device with higher operation safety.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the utility model provides a percutaneous binary channels scope bushing apparatus, its includes the outer tube, the outer tube is equipped with the chamber that holds that link up, the outer tube has upper end and lower extreme, the upper end of outer tube is equipped with the pipeline interface, the pipeline interface with hold the chamber intercommunication, one side of the lower extreme of outer tube is equipped with down and past convex skirt portion outward.

Preferably, the lower end of the outer sleeve is further provided with a notch, the notch forms an inclined plane at the lower end of the outer sleeve, and the skirt portion is located on one side of the inclined plane.

Preferably, the lateral wall of the lower extreme of outer tube is equipped with a plurality of first apopores, and is a plurality of first apopore is along the circumference interval distribution of outer tube, the skirt portion is equipped with a plurality of second apopores, and is a plurality of the second apopore is along the circumference interval distribution of skirt portion.

Preferably, two sides of the upper end of the outer sleeve are respectively provided with one pipeline interface, and the skirt part and one of the pipeline interfaces are positioned on the same side of the outer sleeve.

Preferably, percutaneous two-channel endoscope sleeve pipe device still includes the endoscope sleeve pipe, the endoscope sleeve pipe includes interconnect's handle portion and intubate portion, intubate portion is used for inserting the outer tube hold the intracavity.

Preferably, the outer sleeve is provided with an inner conical surface in the accommodating cavity, the inner conical surface is positioned on one side, far away from the skirt, of the pipe connector, and the endoscope sleeve is provided with an outer conical surface which is used for abutting against the inner conical surface.

Preferably, the upper end of the outer sleeve is provided with a hole expanding cavity, the hole expanding cavity is positioned on one side of the inner conical surface far away from the skirt portion, one side of the hole expanding cavity far away from the inner conical surface is provided with an eaves portion for closing a cavity opening, the eaves portion is provided with a radial notch, the outer side surface of the endoscope sleeve is provided with a clamping block, and the radial notch is used for the clamping block to pass through.

Preferably, percutaneous binary channels scope sleeve pipe device still includes and holds and connect ring, spring and butt piece, hold and connect the ring the spring with the butt piece is all located the scope sleeve pipe, hold and connect the ring with scope sleeve pipe fixed connection, the butt piece is located keep away from of holding the ring one side of skirt part, the spring is located hold connect the ring with between the butt piece and both ends respectively with hold connect the ring with the butt piece butt, the protruding fixture block that is equipped with in side of butt piece.

Preferably, the side of the bearing ring is equipped with the bearing block, the position of bearing block with the position of fixture block corresponds, the butt piece is equipped with accepts the chamber, the keeping away from of accepting the chamber one side of bearing ring is equipped with the eaves that draws in the accent mouth, the spring is located accept intracavity and one end with the eaves butt, the eaves be equipped with the court guide block that the sheathed tube axle center of scope extends, the sheathed tube lateral surface of scope is equipped with along axially extended guide slot, the guide block is located in the guide slot.

Preferably, percutaneous binary channels scope sleeve pipe device still includes buckle spare, the upper end of outer tube is equipped with the joint chamber, the joint chamber is located keeping away from of eaves portion one side of skirt section, the inner wall in joint chamber is equipped with the draw-in groove of a plurality of circumference distributions, buckle spare by elastic material make and install in the side of stalk portion, being close to of buckle the one end in joint chamber is equipped with the latch, the latch is used for inserting in the draw-in groove.

Compared with the prior art, the invention mainly has the following beneficial effects:

during operation, a doctor can hold the outer sleeve, the skirt portion protruding from the side face can pull away soft tissue or nerve tissue to avoid blocking a visual field or damaging nerves, the soft tissue or nerve tissue can be effectively blocked and protected, the pipeline interface can be connected with a water pipe, water flows out from the tail end of the outer sleeve and can flush the soft tissue or nerve tissue, and therefore safety of the operation can be improved.

Drawings

In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic structural view of a percutaneous two-channel endoscope cannula device in accordance with the present invention;

FIG. 2 is an exploded view of a percutaneous dual channel endoscope sheath assembly in accordance with the present invention;

FIG. 3 is a cross-sectional view of a percutaneous dual channel endoscopic cannula device in accordance with the present invention;

FIG. 4 is a cross-sectional view of an outer sleeve according to the present invention;

fig. 5 is a schematic view of the structure of the skirt part involved in the present invention.

Reference numerals:

100-percutaneous two-channel endoscope sleeve device, 10-outer sleeve, 101-accommodating cavity, 102-expanding cavity, 103-clamping cavity, 1031-clamping groove, 104-pipe interface, 105-first water outlet, 106-second water outlet, 11-skirt part, 111-inclined surface, 12-valve, 13-inner conical surface, 14-cornice part, 141-radial gap, 20-endoscope sleeve, 21-outer conical surface, 22-guide groove, 23-threading opening, 30-bearing ring, 31-bearing block, 40-spring, 50-bearing part, 51-brim, 52-guide block, 53-clamping block, 531-spherical bulge, 60-clamping part and 61-clamping tooth.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

FIG. 1 is a schematic view of a percutaneous dual channel endoscope sheath assembly 100 of the present invention; fig. 2 is an exploded view of a percutaneous dual channel endoscopic cannula device 100 in accordance with the present invention; figure 3 is a cross-sectional view of a percutaneous dual channel endoscopic cannula device 100 in accordance with the present invention.

As shown in fig. 1 to 3, a percutaneous dual-channel endoscope sheath device 100 according to a preferred embodiment of the present invention comprises: an outer sheath 10, an endoscope sheath 20, a receiving ring 30, a spring 40, an abutment 50 and a catch 60.

The outer sleeve 10 is provided with a through containing cavity 101, the outer sleeve 10 is provided with an upper end and a lower end, the upper end of the outer sleeve 10 is provided with a pipeline interface 104, the pipeline interface 104 is communicated with the containing cavity 101, and one side of the lower end of the outer sleeve 10 is provided with a skirt 11 protruding downwards and outwards.

In this embodiment, during an operation, a surgeon can hold the outer cannula 10, the skirt 11 protruding from the side can pull the soft tissue or the nerve tissue apart to avoid blocking the visual field or damaging the nerve, so as to effectively block and protect the soft tissue or the nerve tissue, the tube interface 104 can be connected to a water tube, and water flows out from the end of the outer cannula 10 to flush the soft tissue or the nerve tissue, so as to improve the safety of the operation.

FIG. 4 is a cross-sectional view of an outer sleeve 10 in accordance with the present invention; fig. 5 is a schematic view of the structure of the skirt portion 11 according to the present invention.

The outer cannula 10 can be used as a working cannula for poking away soft tissue blocking the field of view or poking away nerve tissue to avoid damaging the nerve tissue, and the transforaminal scope main scope containing the nucleus pulposus forceps, the perfusion channel, the light source or the camera can be inserted into the accommodating cavity 101 of the outer cannula 10 for performing the surgical operation. The outer sleeve 10 is provided with a through containing cavity 101, the outer sleeve 10 is provided with an upper end and a lower end, the upper end of the outer sleeve 10 is provided with a pipeline interface 104, the pipeline interface 104 is communicated with the containing cavity 101, and one side of the lower end of the outer sleeve 10 is provided with a skirt 11 protruding downwards and outwards. The transforaminal scope may be inserted into the receiving cavity 101 from the upper end and instrumentation such as nucleus clamps may be extended from the lower end. The tube interface 104 can be connected to a water tube, and the water flowing out from the end of the outer sleeve 10 can flush away soft tissue or nerve tissue, thereby improving the safety of the operation. The skirt 11 can spread the soft tissue or nerve tissue to avoid blocking the visual field or damaging the nerve, and can effectively block and protect the soft tissue or nerve tissue. The skirt 11 may be skirt-shaped, or flared. The skirt 11 may be a 360 ° full flare that completely isolates soft or neural tissue from the outside of the skirt 11. Preferably, the lower end of the outer sleeve 10 is further provided with a notch, the notch forms a slope 111 at the lower end of the outer sleeve 10, and the skirt 11 is located at one side of the slope 111. Instruments such as nucleus pulposus pincers can be exposed out of the gap for operation, and doctors can observe the posture of the instruments through the gap.

The side wall of the lower end of the outer sleeve 10 is provided with a plurality of first water outlet holes 105, and the plurality of first water outlet holes 105 are distributed at intervals along the circumferential direction of the outer sleeve 10. The water received from the pipe joint 104 flows out of the first water outlet hole 105, and can flush out soft tissue or nerve tissue outside the lower end of the outer tube 10, thereby improving the safety of the operation. The first outlet hole 105 may be disposed adjacent to the skirt 11. Further, the skirt portion 11 is provided with a plurality of second water outlet holes 106, and the plurality of second water outlet holes 106 are spaced apart along the circumferential direction of the skirt portion 11. The water received from the pipe joint 104 flows out of the second water outlet hole 106, and can flush out soft tissue or nerve tissue outside the skirt 11, thereby further improving the safety of the operation. The first outlet hole 105 and the second outlet hole 106 may both be circular holes. Preferably, the second outlet hole 106 is a kidney-shaped hole, and the length direction of the kidney-shaped hole is along the radius direction of the skirt portion 11, so that most of tissues outside the skirt portion 11 can be effectively flushed by the water flowing out of the second outlet hole 106.

The upper end of the outer sleeve 10 is provided with a pipe connection 104 on each side, the skirt 11 and one of the pipe connections 104 being located on the same side of the outer sleeve 10. The upper end of the outer cannula 10 can be symmetrically provided with two tube ports 104, and the doctor can select which tube port 104 to feed water according to the position of the percutaneous double-channel endoscope cannula device 100 relative to the patient, so as to facilitate the doctor to perform the operation. The pipeline interface 104 is provided with a valve 12, and a doctor can operate the two valves 12 to select the water inlet direction. The skirt 11 and one of the tube ports 104 are located on the same side of the outer sleeve 10 to aid the physician in determining the orientation of the skirt 11 based on the tube ports 104.

The endoscope sheath 20 comprises a handle portion and a cannula portion connected to each other, the cannula portion being adapted to be inserted into the receiving cavity 101 of the overtube 10. In some cases, the endoscope sheath 20 may also be referred to as a transforaminal scope. The endoscope sheath 20 can be inserted into the receiving cavity 101 from the upper end of the outer sheath 10. Instruments such as nucleus pulposus clamps may be inserted into the cavity of the endoscope sheath 20. The doctor holds the handle part to perform the operation. The side of the endoscope sleeve 20 is provided with a threading opening 23, and a wiring harness of the light source can be inserted into the cavity of the endoscope sleeve 20 from the threading opening 23. The top of the endoscope shaft 20 can receive a camera system.

The outer sleeve 10 is provided with an inner conical surface 13 in the accommodating cavity 101, the inner conical surface 13 is located on one side of the pipe joint 104 far away from the skirt portion 11, and the endoscope sleeve 20 is provided with an outer conical surface 21, and the outer conical surface 21 is used for abutting against the inner conical surface 13. The mutual butt of outer conical surface 21 and interior conical surface 13, the conical surface has from the effect of locating, can make scope sleeve 20 keep holding the center of chamber 101, and scope sleeve 20's axis roughly coincides with the axis of outer tube 10, and the rivers that hold in the chamber 101 are roughly even, are favorable to making the velocity of flow that the rivers washed out from first apopore 105 and second apopore 106 more even, the development of the operation of being convenient for. The outer conical surface 21 and the inner conical surface 13 are mutually abutted, so that the sealing performance of the conical surfaces is better, and the water in the accommodating cavity 101 is favorably prevented from overflowing upwards. In some examples, the taper angles of the outer and inner tapered surfaces 21, 13 are each 50 °.

The upper end of outer tube 10 is equipped with reaming chamber 102, and reaming chamber 102 is located one side of keeping away from skirt portion 11 of interior conical surface 13, and one side of reaming chamber 102 of keeping away from interior conical surface 13 is equipped with eaves portion 14 of drawing in the chamber mouth, and eaves portion 14 is equipped with radial breach 141, and scope sleeve 20's lateral surface is equipped with fixture block 53, and radial breach 141 is used for supplying fixture block 53 to pass through. When the endoscope sleeve 20 is inserted into the accommodating cavity 101, the latch 53 is aligned with the radial notch 141, after the insertion, the latch 53 is positioned in the enlarged cavity 102 and under the brim 14, and the endoscope sleeve 20 is rotated to dislocate the latch 53 from the radial notch 141, so that the endoscope sleeve 20 cannot be separated from the accommodating cavity 101. The eaves 14 may be provided with two radial notches 141 symmetrical about the axis of the outer sleeve 10 and the outer side of the endoscope sleeve 20 is provided with two latching blocks 53 symmetrical about the axis of the endoscope sleeve 20, thereby facilitating the insertion of the endoscope sleeve 20 into the outer sleeve 10. In some examples, the latch 53 can be formed on an outer side of the endoscope sheath 20.

The receiving ring 30, the spring 40 and the abutting piece 50 are all sleeved on the endoscope sleeve 20, the receiving ring 30 is fixedly connected with the endoscope sleeve 20, the abutting piece 50 is located on one side, away from the skirt portion 11, of the receiving ring 30, the spring 40 is located between the receiving ring 30 and the abutting piece 50, two ends of the spring 40 are respectively abutted against the receiving ring 30 and the abutting piece 50, and a clamping block 53 is convexly arranged on the side face of the abutting piece 50. The spring 40 is used for generating elastic acting force to push the abutting part 50 upwards, so that the abutting part 50 is kept in contact with the eaves 14, the outer conical surface 21 of the endoscope sleeve 20 is kept in contact with the inner conical surface 13 of the outer sleeve 10, the position stability of the endoscope sleeve 20 relative to the outer sleeve 10 is favorably improved, and the matching sealing performance of the outer conical surface 21 and the inner conical surface 13 can also be improved. Preferably, the side of the abutment 50 is provided with two latch blocks 53 that are symmetrical about the axis of the endoscope sheath 20.

The side of the bearing ring 30 is provided with a bearing block 31, the position of the bearing block 31 corresponds to the position of the fixture block 53, the abutting part 50 is provided with an accommodating cavity, one side of the accommodating cavity, which is far away from the bearing ring 30, is provided with a cover brim 51 closing the cavity opening, the spring 40 is positioned in the accommodating cavity, one end of the spring is abutted against the cover brim 51, the cover brim 51 is provided with a guide block 52 extending towards the axis of the endoscope sleeve 20, the outer side surface of the endoscope sleeve 20 is provided with a guide groove 22 extending along the axial direction, and the guide block 52 is positioned in the guide groove 22. The guide block 52 is located in the guide groove 22, the abutment member 50 can move axially relative to the endoscope sheath 20, but the abutment member 50 cannot rotate relative to the endoscope sheath 20, so that the receiving block 31 is always located right below the latch 53, the receiving block 31 and the latch 53 sequentially pass through the notches, and the receiving ring 30, the spring 40 and the latch 53 are held in the counterbore 102. The receiving block 31 is used for receiving the spring 40. The abutting member 50 is in the shape of a sleeve and is sleeved on the endoscope sheath 20. The spring 40 is located in the accommodating cavity, the abutting piece 50 can protect the spring 40, and the working stability of the spring 40 can be improved, so that the matching stability of the external conical surface 21 and the internal conical surface 13 is improved. One side of the latch 53 close to the eaves portion 14 is provided with a spherical protrusion 531, and the spherical protrusion 531 abuts against the eaves portion 14. The endoscope sleeve 20, the receiving ring 30, the spring 40 and the abutting member 50 can rotate relative to the outer sleeve 10 as a whole, and the spherical protrusions 531 abut against the eaves 14, which is beneficial to reducing the rotation friction force. The endoscope cannula 20, the receiving ring 30, the abutment 50 and the outer cannula 10 may all be made of a stainless steel material. The abutment 50 may also be made of a copper alloy to further reduce rotational friction. The side of the receiving ring 30 is provided with two receiving blocks 31 which are symmetrical with respect to the axis of the receiving ring 30.

The upper end of outer tube 10 is equipped with joint chamber 103, and joint chamber 103 is located one side of keeping away from skirt portion 11 of eaves portion 14, and the inner wall in joint chamber 103 is equipped with the draw-in groove 1031 of a plurality of circumference distributions, and buckle spare 60 is made by elastic material and installs in the side of stalk portion, and the one end of buckle that is close to joint chamber 103 is equipped with latch 61, and latch 61 is used for inserting in the draw-in groove 1031. The latch 61 is inserted into the latch slot 1031 under the action of elastic force, so that the endoscope sleeve 20 cannot rotate relative to the outer sleeve 10, and the angle of the endoscope sleeve 20 relative to the outer sleeve 10 is locked, thereby facilitating the operation of the doctor. When the doctor presses the latch 60 with his/her finger, the latch 61 disengages from the catch 1031, the endoscope sheath 20 can rotate relative to the outer sheath 10, and the doctor can adjust the angle of the endoscope sheath 20 relative to the outer sheath 10. The latch 60 may be made of steel sheet.

When the endoscope sleeve 20 is used, the bearing block 31 and the clamping block 53 can be aligned to the radial gap 141, the endoscope sleeve 20 is inserted into the accommodating cavity 101 of the outer sleeve 10, the clamping block 53 is located below the brim 14, the endoscope sleeve 20 is rotated, the axial position of the endoscope sleeve 20 relative to the outer sleeve 10 is limited, the outer conical surface 21 of the endoscope sleeve 20 is abutted to the inner conical surface 13 of the outer sleeve 10, the buckle 60 is pressed by fingers, the angle of the endoscope sleeve 20 relative to the outer sleeve 10 can be adjusted, the skirt 11 is located at the optimal position, the buckle 60 is loosened, the clamping tooth 61 is inserted into the clamping groove 1031, the angle of the endoscope sleeve 20 relative to the outer sleeve 10 can be limited, and therefore operation is convenient.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims

1. A percutaneous two-channel endoscope sleeve device comprises an outer sleeve and is characterized in that,

the outer tube is equipped with the chamber that holds that link up, the outer tube has upper end and lower extreme, the upper end of outer tube is equipped with the pipeline interface, the pipeline interface with hold the chamber intercommunication, one side of the lower extreme of outer tube is equipped with down and the convex skirt portion outward.

2. The percutaneous dual-channel endoscopic cannula device according to claim 1,

the lower extreme of outer tube still is equipped with the breach, the breach is in the lower extreme of outer tube forms the inclined plane, the skirt portion is located one side on the inclined plane.

3. The percutaneous dual-channel endoscopic cannula device according to claim 2,

the lateral wall of the lower extreme of outer tube is equipped with a plurality of first apopores, and is a plurality of first apopore is along the circumference interval distribution of outer tube, skirt portion is equipped with a plurality of second apopores, and is a plurality of the second apopore is along the circumference interval distribution of skirt portion.

4. The percutaneous dual-channel endoscopic cannula device according to claim 1,

the two sides of the upper end of the outer sleeve are respectively provided with one pipeline interface, and the skirt part and one of the pipeline interfaces are positioned on the same side of the outer sleeve.

5. The percutaneous dual-channel endoscopic cannula device according to any one of claims 1 to 4,

percutaneous binary channels scope sleeve pipe device still includes the scope sleeve pipe, the scope sleeve pipe includes interconnect's stalk portion and intubate portion, intubate portion is used for inserting the outer tube hold the intracavity.

6. The percutaneous dual-channel endoscopic cannula device according to claim 5,

the outer tube in hold the intracavity and be equipped with interior conical surface, just interior conical surface is located keeping away from of pipeline interface one side of skirt portion, the scope sleeve pipe is equipped with the external cone face, the external cone face is used for the butt interior conical surface.

7. The percutaneous dual-channel endoscopic cannula device according to claim 6,

the upper end of outer tube is equipped with the reaming chamber, the reaming chamber is located one side of interior conical surface keeping away from the skirt portion, one side of reaming chamber keeping away from the interior conical surface is equipped with the eaves portion of drawing in the chamber mouth, the eaves portion is equipped with radial breach, scope sheathed tube lateral surface is equipped with the fixture block, radial breach is used for supplying the fixture block passes through.

8. The percutaneous dual-channel endoscopic cannula device according to claim 7,

percutaneous binary channels scope sleeve pipe device still includes to hold and connects ring, spring and butt spare, hold and connect the ring the spring with the butt spare is all overlapped and is located the scope sleeve pipe, hold and connect the ring with scope sleeve pipe fixed connection, the butt spare is located keep away from of holding the ring one side of skirt part, the spring is located hold connect the ring with between the butt spare and both ends respectively with hold connect the ring with butt spare butt, the protruding fixture block that is equipped with in side of butt spare.

9. The percutaneous dual-channel endoscopic cannula device according to claim 8,

the side of the bearing ring is provided with a bearing block, the position of the bearing block corresponds to the position of the clamping block, the abutting piece is provided with an accommodating cavity, one side of the bearing ring, which is far away from the accommodating cavity, is provided with a cover eave which is used for drawing in the cavity opening, the spring is positioned in the accommodating cavity and one end of the accommodating cavity is abutted to the cover eave, the cover eave is provided with a guide block extending towards the axis of the endoscope sleeve, the outer side surface of the endoscope sleeve is provided with a guide groove extending along the axial direction, and the guide block is positioned in the guide groove.

10. The percutaneous dual-channel endoscopic cannula device according to claim 7,

percutaneous binary channels scope sleeve pipe device still includes buckle spare, the upper end of outer tube is equipped with the joint chamber, the joint chamber is located keeping away from of eaves portion one side of skirt section, the inner wall in joint chamber is equipped with the draw-in groove that a plurality of circumference distribute, buckle spare by elastic material make and install in the side of stalk portion, being close to of buckle the one end in joint chamber is equipped with the latch, the latch is used for inserting in the draw-in groove.