WO2022062484A1

WO2022062484A1 - Two-channel working cannula

Info

Publication number: WO2022062484A1
Application number: PCT/CN2021/099871
Authority: WO
Inventors: 贺石生; 倪海键; 冯超博
Original assignee: 上海市第十人民医院
Priority date: 2020-09-28
Filing date: 2021-06-11
Publication date: 2022-03-31

Abstract

A two-channel working cannula comprises a tube body (1), an interlayer (2), and a handle (3). The handle (3) is connected to one of two ends of the tube body (1). The tube body (1) has a hollow tubular structure. An inlet (11) and an outlet (12) are respectively provided at the two ends of the tube body (1), and the outer diameter of the tube body (1) gradually decreases from the end of the tube body (1) adjacent to the inlet (11) to the end of the tube body (1) adjacent to the outlet (12). The interlayer (2) is disposed in the tube body (1) in a lengthwise direction of the tube body (1), and divides the inside of the tube body (1) into a working channel (13) and an endoscope channel (14). The two-channel working cannula can assist endoscopic spine surgery, and improve the success rate of the surgery.

Description

Dual channel work sleeve

This application requires the Chinese patent application number 202011043424.8 filed on September 28, 2020; the Chinese patent application number 202011205041.6 filed on November 2, 2020; and the Chinese patent application filed on February 25, 2021 The priority of the patent application with application number 202110210623.1.

technical field

The invention relates to the technical field of medical instruments, in particular to a dual-channel working sleeve.

Background technique

As the concept of minimally invasive spine surgery continues to gain popularity, more and more spine surgeons currently use minimally invasive surgery as their preferred treatment strategy.

However, the current spinal endoscopic systems still have many deficiencies. First, in the process of puncture and cannulation, it is necessary to rely on repeated X-ray fluoroscopy to reach the target, so that both patients and operators are exposed to radiation for a long time; secondly, the efficiency of intervertebral foramen expansion and formation is low, and due to The outer side is inclined, and it is easy to slide to the ventral side during operation, making it difficult to form; at the same time, during the process of articular facet formation, whether using a trephine or bone drill, the operation is performed blindly under X-ray fluoroscopy, and there is a risk of nerve damage. ; In addition, interbody fusion plays an important role in reconstructing the stability of the spine, and the key to interbody fusion is the placement of the interbody cage. For minimally invasive surgery, due to the limited field of view, the operator can only place The channel matched with the cage or the openable cage is used, but this will increase the risk of tissue and nerve damage, and even endplate damage, collapse, non-fusion of bone graft, etc., resulting in surgical failure.

Moreover, the above-mentioned reasons lead to a steep learning curve for spinal endoscopic techniques, especially for spine surgeons who are accustomed to surgical thinking, and it is difficult to master in the early stages of learning.

technical problem

That is to say, the current minimally invasive spine surgery still has some deficiencies, and a new device-assisted endoscopic system still needs to be provided.

technical solutions

The purpose of the utility model is to overcome the defects in the existing minimally invasive operation of the spine and provide a double-channel working sleeve.

A dual-channel working sleeve, comprising a pipe body, an interlayer and a handle, one end of the pipe body is connected with the handle, the pipe body is in a hollow tubular structure, and an inlet and an outlet are respectively formed at both ends of the pipe body , the outer diameter of the pipe body gradually decreases from the end of the pipe body close to the inlet to the end of the pipe body close to the outlet, and the interlayer is arranged on the pipe along the length direction of the pipe body. In vivo, and the interior of the tube body is divided into a working channel and an endoscopic channel.

In a preferred embodiment of the present invention, the working channel is arranged above the endoscope channel, the inner upper surface of the tube body and the upper surface of the interlayer together form the working channel, the tube The lower surface of the interior of the body and the lower surface of the interlayer together form the endoscopic channel.

In a preferred embodiment of the present invention, the inner contour of the working channel is larger than the inner contour of the endoscope channel.

In a preferred embodiment of the present invention, the central axis of the working channel and the central axis of the endoscope channel are disposed relatively obliquely.

In a preferred embodiment of the present invention, an insertion portion extends from the lower portion of one end of the pipe body close to the outlet, and the insertion portion has a sharply protruding duckbill-shaped structure.

In a preferred embodiment of the present invention, the outline of the cross-section of the working channel is set in a circle or a rectangle with rounded corners.

In a preferred embodiment of the present invention, a cleaning pipeline is further provided in the pipe body, and the cleaning pipeline includes: a water inlet and outlet channel and a water inlet and outlet connection head, the water inlet and outlet channels are all arranged in a tubular shape, and the inlet and outlet channels are arranged in a tubular shape. The water channels are all opened in the interlayer, and one end penetrates the interlayer close to the outlet end, and the other end respectively penetrates the two sides of the interlayer near the inlet end, and faces the inner wall of the pipe body respectively. The two sides are arranged on both sides, the water inlet and outlet connectors are respectively fixed on both sides of one end of the pipe body close to the inlet, and one end of the water inlet and outlet connectors penetrates one side of the pipe body and is connected with the inlet channel. connected to the other end.

In a preferred embodiment of the present invention, the handle is arranged in a roughly rhombus-shaped plate structure, a through opening is defined in the middle of the plate structure, and the inner diameter of the through opening is the same as the diameter of the pipe body close to the inlet. The outer diameters of one end match, the four corners of the handle are rounded, and the lengths of the two sides of the upper part of the handle are greater than the lengths of the two sides of the lower part of the handle.

In a preferred embodiment of the present invention, the interlayer and the tube body are integral structures, and the tube body is made of a developing material.

In a preferred embodiment of the present invention, the outer wall of the pipe body is engraved with scale lines, and the scale lines are arranged along the length direction of the pipe body.

In a preferred embodiment of the present invention, the tube body is a hollow-separated tubular structure with a water drop-shaped cross-section, and the inner tube body is divided into a working channel, an endoscope channel and two water inlet and outlet channels through interlayers. and the endoscope channel are all circular channels.

In a preferred embodiment of the present invention, the edge of the upper half of the working channel coincides with the inner surface of the tube body, and the lowest point of the endoscope channel is tangent to or at the inner surface of the tube body The inner surface of the tube body coincides with a small part of the bottom of the endoscope channel;

From the end close to the handle to the end far from the handle, the outer diameter of the tube body gradually decreases, and the working channel and the endoscope channel continue to approach until they are tangent; in the untangent part, the working channel and the endoscope channel are The channel and the endoscope channel are connected by a vertical interlayer, which divides the inside of the tube body into four channels. Except for the working channel and the endoscope channel, the other two channels are water inlet and outlet channels, and Axisymmetric distribution;

The inside of the handle is provided with two circular through openings, the inner diameters of which are respectively the same as the diameters of the working channel and the endoscope channel and communicate with each other.

In a preferred embodiment of the present invention, the pipe body is provided with water inlet and outlet connectors on both sides close to one end of the handle for connecting with external water inlet and outlet pipes, and the water inlet connector and the water outlet connector are fixed. on the outer wall of the tube body.

In a preferred embodiment of the present invention, the lengths of the working channel, the endoscope channel and the two water inlet and outlet channels are all smaller than the length of the pipe body.

In a preferred embodiment of the present invention, the pipe body is a separate pipe body, which is divided into two parts along its axis, which are a first pipe material and a second pipe material, and a bearing mechanism is provided on the first pipe material, so The second pipe is provided with a distance adjusting mechanism corresponding to the carrying mechanism, and the opening and closing distance between the first pipe and the second pipe is adjusted through the cooperation between the carrying mechanism and the distance adjusting mechanism.

In a preferred embodiment of the present invention, the bearing mechanism is composed of a plurality of adjustment columns, and the adjustment columns are provided with a plurality of them, which are symmetrically placed at the front end of the first pipe material from top to bottom, and a constant value is set between the adjustment columns. The distance adjustment mechanism is an "F"-shaped adjustment plate, the bottom of the adjustment plate is connected to the front end of the second pipe, and is symmetrically arranged, and the inner surface of the upper part is clamped to the outside of the adjustment column. surface.

In a preferred embodiment of the present invention, the bearing mechanism is a nut, which is symmetrically arranged, the distance adjustment mechanism includes a mounting plate and an adjusting screw, and the mounting plate and the adjusting screw are placed on the outer front end of the second pipe, and the left and right Symmetrical settings.

In a preferred embodiment of the present invention, the first pipe material and the second pipe material are separated up and down, and the separation position of the first pipe material and the second pipe material is located at the working channel of the pipe body, and The working channel is equally divided into two along its central axis, and the endoscope channel is integrated on the second tube.

In a preferred embodiment of the present invention, the first pipe material and the second pipe material are separated from left to right, and the separation position of the first pipe material and the second pipe material is located on the central axis of the working channel.

beneficial effect

In the dual-channel working sleeve provided by the present invention, the working channel and the endoscope channel are arranged in the same tube body, and the outer diameter of the tube body gradually decreases from the end of the tube body near the inlet to the end of the tube body near the outlet. During the process, the medical staff first locates the position where the patient needs to perform the minimally invasive surgery, inserts the above-mentioned insertion part 23 of the tube body 1 into the human body by gradually expanding, and places a camera with a camera in the endoscope channel 24. The endoscopic system is installed, and then surgical instruments such as a cage are placed in the working channel 13, and then the routine operation of minimally invasive surgery is performed to complete the operation. Further, through the arrangement of the cleaning pipeline, the surgical site can be cleaned through the cleaning pipeline, so that the endoscope can obtain a cleaning field of view. This can improve the success rate of the surgery.

Compared with the prior art, the present invention has the following advantages: 1. The channel design conforms to the three-dimensional anatomical structure of Kambin's triangle, which reduces additional damage caused by channel placement and improves safety. 2. Realize complete visual operation during minimally invasive surgery such as spinal endoscopic surgery, reduce the difficulty of surgery and improve the efficiency of surgery. 3. By matching different tools, the surgical indications of the working sleeve can be expanded, and it is beneficial to the standardization of minimally invasive surgery such as spinal endoscopic surgery.

Description of drawings

FIG. 1 is a schematic structural diagram of a dual-channel working casing provided by the first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of the handle end of the dual-channel working sleeve in FIG. 1 .

FIG. 3 is a schematic side view of the structure of the dual-channel working sleeve in FIG. 1 .

FIG. 4 is a horizontal cross-sectional view of the interlayer of the dual-channel work casing in FIG. 1 .

FIG. 5 is a schematic structural diagram of the dual-channel working casing provided by the second embodiment of the present invention.

FIG. 6 is a schematic cross-sectional structural diagram of the dual-channel working sleeve shown in FIG. 5 at one end away from the handle.

FIG. 7 is a schematic cross-sectional structural diagram of the dual-channel working sleeve in FIG. 5 at one end close to the handle.

FIG. 8 is a schematic view showing the structure of the handle end of the dual-channel working sleeve in FIG. 5 .

FIG. 9 is a schematic cross-sectional structural diagram of the dual-channel working sleeve in FIG. 5 along the tangential direction of the working channel and the endoscope channel 14 .

FIG. 10 is a schematic structural diagram of a dual-channel working sleeve provided by a third embodiment of the present invention.

FIG. 11 is a schematic structural diagram of a dual-channel working sleeve provided by a fourth embodiment of the present invention.

FIG. 12 is a schematic view of the structure of the dual-channel working sleeve shown in FIG. 11 in another direction.

FIG. 13 is a schematic diagram showing a partial enlarged structure at A in FIG. 11 .

FIG. 14 is a schematic structural diagram of a dual-channel working sleeve provided by a fifth embodiment of the present invention.

FIG. 15 is a schematic view of the structure of the dual-channel working sleeve shown in FIG. 14 in another direction.

FIG. 16 is a schematic diagram of a partially enlarged structure at B in FIG. 15 .

FIG. 17 is a schematic structural diagram of a dual-channel working sleeve provided by the sixth embodiment of the present invention.

FIG. 18 is a schematic view of the structure of the dual-channel working sleeve shown in FIG. 17 in another direction.

FIG. 19 is a schematic diagram of a partially enlarged structure at C in FIG. 17 .

Embodiments of the present invention

Exemplary embodiments are described in detail below with reference to the accompanying drawings and embodiments, examples of which are shown in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

The terms "first", "second", "third", "fourth", etc. in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. .

As shown in FIG. 1 to FIG. 4 , the dual-channel working sleeve provided by the first embodiment of the present invention includes: a pipe body 1 , an interlayer 2 and a handle 3 , the pipe body 1 is arranged in a horizontal direction, and the pipe body 1 is in the shape of a hollow tube Structure, the two ends of the pipe body 1 are respectively formed with an inlet 11 and an outlet 12, the inner contour of the inlet 11 is larger than the inner contour of the outlet 12, and the outer diameter of the pipe body 1 is from the end of the pipe body 1 close to the inlet 11 to the pipe body 1 close to the outlet. One end of 12 is gradually reduced, the interlayer 2 is arranged in the pipe body 1 along the length direction of the pipe body 1, the handle 3 is fixedly installed on the end of the pipe body 1 close to the inlet 11, the interlayer 2 is arranged in the horizontal direction, and the interlayer 2 is arranged along the length of the pipe body 1. The length direction is arranged, the inside of the tube body 1 is divided into a working channel 13 and an endoscope channel 14 by the interlayer 2, the working channel 13 is arranged above the endoscope channel 14, and the upper surface of the inner part of the tube body 1 is shared with the upper surface of the interlayer 2 A working channel 13 is formed. The inner lower surface of the tubular body 1 and the lower surface of the interlayer 2 together form an endoscope channel 14 . The working channel 13 is used for placing surgical instruments, and the endoscope channel 14 is used for placing an endoscope. Further, the entire tube body 1 is divided into two upper and lower tubular channels by the interlayer 2, the upper channel is the working channel 13, the lower channel is the endoscope channel 14, and the interlayer 2 is arranged horizontally along the inner axis of the tube body 1. , the working channel 13 and the endoscope channel 14 are both set from the inlet 11 of the tube body 1 toward the outlet 12, and further, the working channel 13 and the endoscope channel 14 are divided into two relatively independent pipeline structures that are relatively inclined, and the working channel 13 and the end of the endoscope channel 14 close to the outlet 12 are close together. The working channel 13 is used to place surgical instruments to directly perform minimally invasive surgery on the patient, and the endoscope is placed in the endoscope channel 14 for the surgical treatment process. The width of the working channel 13 in the horizontal direction should not be less than 10mm, and the height in the vertical direction should not be less than 14mm; wherein, the interlayer 2 has a plate-like structure and is integrally fixed in the pipe body 1, And the thickness of the end of the interlayer 2 near the inlet 11 should be greater than the thickness of the end of the interlayer 2 near the outlet 12; in the actual use process, the medical staff first locates the position where the patient needs to be subjected to minimally invasive surgery, and gradually expands the position of the patient. One end of the outlet 12 of the above-mentioned tube body 1 is inserted into the human body, and an endoscope with a camera device is placed in the endoscope channel 14, and then surgical instruments such as a fusion cage are placed in the working channel 13, and then the routine of minimally invasive surgery is performed. operation, complete the operation.

Further, as a preferred embodiment, the pipe body 1 is also provided with a cleaning pipeline, and the cleaning pipeline includes: a water inlet and outlet channel, specifically a water inlet channel 21 and a water outlet channel 22, and a water inlet and outlet connection head, specifically The water inlet connector 4 and the water outlet connector 5, the water inlet channel 21 and the water outlet channel 22 are all arranged in a tubular shape, and the water inlet channel 21 and the water outlet channel 22 are both opened in the interlayer 2. One end of the water inlet channel 21 and the water outlet channel 22 One end is arranged through the end of the interlayer 2 close to the outlet 12, the other end of the water inlet channel 21 and the other end of the water outlet channel 22 respectively penetrate both sides of the end of the interlayer 2 close to the inlet 11, and the other end of the water inlet channel 21 and the water outlet channel The other end of 22 is respectively set on both sides of the inner wall of the pipe body 1, the water inlet connector 4 and the water outlet connector 5 are respectively fixed on both sides of one end of the pipe body 1 close to the inlet 11, and one end of the water inlet connector 4 is fixed. It runs through one side of the pipe body 1 and communicates with the other end of the inlet channel, and one end of the outlet connector 5 penetrates one side and communicates with the other end of the outlet channel 22 . Further, the water inlet connector 4 and the water outlet connector 5 are detachably installed, and are fixed to the pipe body 1 by means of threaded connection, and are connected to the external water inlet and outlet pipelines, so that they can be installed according to the actual situation of the operator. It is necessary to inject the cleaning liquid from the water inlet connector 4. The water inlet channel 21 and the water outlet channel 22 respectively form a water outlet and a water return outlet at the end of the interlayer 2 near the outlet 12. The water inlet channel 21 and the water outlet channel 22 are in the horizontal direction. They are arranged parallel to each other, and the horizontal cross-sections of the water inlet channel 21 and the water outlet channel 22 are L-shaped. Cleaning is performed at the position so that the endoscope can obtain a clear view. After cleaning, the cleaning liquid returns to the water outlet into the water outlet channel 22 and flows out from the water outlet connector 5 .

Further, as a preferred embodiment, a certain distance is reserved between the end of the interlayer 2 close to the outlet 12 and the outlet 12 . Further, in order to facilitate the cleaning fluid to be smoothly ejected from the water outlet, a certain distance is reserved between the end of the interlayer 2 near the outlet 12 and the port of the outlet 12 to prevent the interlayer 2 from directly colliding with the patient's body tissue.

Further, as a preferred embodiment, the inner contour of the working channel 13 is larger than the inner contour of the endoscope channel 14 .

As a preferred embodiment, the central axis of the working channel 13 and the central axis of the endoscope channel 14 are disposed relatively obliquely. Further, the distance between the central axis of the working channel 13 and the central axis of the endoscope channel 14 at one end of the inlet 11 is greater than the distance between the two at one end of the outlet 12 .

As a preferred embodiment, an insertion portion 23 extends from the lower portion of one end of the pipe body 1 close to the outlet 12 , and has a sharply protruding duckbill structure. Further, the port surface of one end of the outlet 12 is inclined as a whole. Specifically, the lower end of the outlet 12 protrudes from the upper end of the outlet 12, and the lower end of the outlet 12 is concave in the middle and the two sides are arranged in a bulge shape, forming the above-mentioned shape. duckbill structure.

The first embodiment of the present invention also has the following implementations on the basis of the above:

In a further embodiment of the present invention, the handle 3 is arranged in an approximately rhombus-shaped plate structure, the middle of the plate structure is provided with a through opening, and the inner diameter of the through opening matches the outer diameter of the end of the pipe body 1 close to the inlet 11, The four corners of the handle 3 are rounded, and the length of the two sides of the upper part of the handle 3 is greater than the length of the two sides of the lower part of the handle 3 . Further, the medical staff can perform operations such as inserting or twisting the entire tube body 1 through the handle 3 .

In a further embodiment of the present invention, the outline of the cross section of the working channel 13 is set in a rounded rectangle. It can be understood that in other embodiments, it can also be circular.

In a further embodiment of the present invention, the interlayer 2 and the tube body 1 have an integrated structure, and the tube body 1 is made of a developing material. Further, the entire above-mentioned dual-channel working sleeve is made of developing material as a whole, which facilitates accurate positioning under the operation of the auxiliary imaging device.

In a further embodiment of the present invention, the outer wall of the pipe body 1 is engraved with a scale line 15, and the scale line 15 is arranged along the length direction of the pipe body 1. The scale line 15 is used to observe the depth of the end of the pipe body 1 close to the outlet 12 entering the human body.

As shown in FIGS. 5 to 9 , the dual-channel working sleeve provided by the second embodiment of the present invention includes a pipe body 1 and a handle 3 fixed on one end of the pipe body 1 ;

Wherein, the tube body 1 is a hollow-separated tubular structure with a water drop-shaped cross-section, and the inner tube body is divided into a working channel 13, an endoscope channel 14 and two water inlet and outlet channels 25 through the interlayer 2;

Both the working channel 13 and the endoscope channel 14 are circular passages, and the diameter of the working channel 13 is larger than that of the endoscope channel 14, and the working channel 13 is located above the endoscope channel 14; the edge of the upper half of the working channel 13 is connected to the tube The inner surface of the body 1 coincides, and the lowest point of the endoscope channel 14 is tangent to the inner surface of the tube body 1 or the inner surface of the tube body 1 coincides with a small part of the bottom of the endoscope channel 14, so as to maximize the flushing volume of the inlet and outlet water channels The working channel is used to place surgical instruments, and the endoscope channel 14 is used to place the endoscope system;

From the end close to the handle 3 to the end away from the handle 3, the outer diameter of the tube body 1 is gradually reduced, and the working channel 13 and the endoscope channel 14 are continuously approached until they are tangent; in the untangent part, the working channel 13 and the endoscope channel 14 It is connected by a vertical interlayer 2, and the height of the vertical interlayer 2 is also gradually decreasing, dividing the inside of the tube body 1 into four channels, except for the working channel 13 and the endoscope channel 14, the other two The channels are all water inlet and outlet channels 25, and the inlet and outlet water channels 25 are axially symmetrically distributed;

The inside of the handle 3 is provided with two circular through openings, the inner diameters of which are respectively the same as the diameters of the working channel 13 and the endoscope channel 14 and communicate with each other.

In addition, referring to FIG. 3 , an insertion portion 23 extends from the lower portion of one end of the tube body 1 away from the handle 3 , and has a sharply protruding duckbill-shaped structure. The pipe body 1 is provided with a water inlet connector 4 communicating with the water inlet and outlet channels 25 on one side and a water outlet connector 5 communicated with the water inlet and outlet channels 25 on the other side on both sides near one end of the handle 3. The connection head 4 and the water outlet connection head 5 are respectively connected with the external water inlet pipe and the water outlet pipe. In another preferred embodiment of the present invention, the water inlet connector 4 is communicated with at least one water inlet and outlet channel 25, and the water outlet connector 5 is communicated with the working channel 23/endoscope channel 24, so that without affecting the operation, The two water inlet and outlet channels 25 have a large amount of flushing fluid flowing in, which can ensure that sufficient cleaning fluid is used to flush the lens.

In the actual use process, the medical staff first locates the position where the patient needs to perform the minimally invasive surgery, inserts the above-mentioned insertion part 23 of the tube body 1 into the human body through the method of gradual expansion, and places a tape with a tape in the endoscope channel 24 The endoscope of the camera device, and then the surgical instruments such as the fusion cage are placed in the working channel 13, and then the routine operation of the minimally invasive surgery is performed to complete the operation. According to needs, during this period, the cleaning liquid is injected from the water inlet connector 4, and then enters the water inlet and outlet channels 25 and is sprayed to the patient's operating position for cleaning, so that the endoscope can obtain a clear view. The collection enters the water outlet channel and flows out from the water outlet connector 5 .

In a preferred embodiment of the present invention, the water inlet connection head 4 and the water outlet connection head 5 are detachably fixed on the outer wall of the pipe body 1, and are fixed to the pipe body 1 by means of screw connection, and are connected with the external Connect the water inlet and outlet pipes.

In a preferred embodiment of the present invention, the interlayer 2 and the tube body 1 are integrated, and are prepared by using a developing material, which facilitates accurate positioning with the help of an auxiliary imaging device.

In a preferred embodiment of the present invention, the handle 3 is arranged in an approximately rhombus-shaped plate structure, and its four corners are rounded; The medical staff can insert or twist the entire tube body 1 through the handle 3 .

In a preferred embodiment of the present invention, the lengths of the four channels are all smaller than the length of the tube body 1, and a certain distance is reserved between the interlayer 22 and the insertion portion 23 to avoid direct contact between the interlayer 22 and the patient's body tissue.

In a preferred embodiment of the present invention, the outer wall of the tube body 1 is engraved with a scale line along its length direction, and the depth of the end of the tube body 1 close to the insertion portion 23 entering the human body is observed.

As shown in FIG. 10 , the dual-channel working sleeve provided by the fourth embodiment of the present invention is basically the same as that of the second embodiment. The difference is that in this embodiment, viewed from the end away from the handle 3 , the pipe The end face is round.

As shown in FIGS. 11 to 13 , the dual-channel working casing provided by the third embodiment of the present invention includes a pipe body 1 and an interlayer 2 . The pipe body 1 is a hollow pipe body 1 with open ends at both ends, and the interlayer 2 is placed on the Inside, the interlayer 2 connects the end and tail of the tube body 1, and divides the tube body 1 into two independent channels, the working channel 13 and the endoscope channel 14. The tube body 1 is a separate channel. The pipe body 1 is divided into two parts along its axis, which are a first pipe material 6 and a second pipe material 7 respectively. The first pipe material 6 is provided with a bearing mechanism 61, and the second pipe material 7 is provided with For the distance adjusting mechanism 71 corresponding to the mechanism 61 , the opening and closing distance between the first pipe 6 and the second pipe 7 is adjusted through the cooperation between the bearing mechanism 61 and the distance adjusting mechanism 71 .

In this embodiment, the bearing mechanism 61 is composed of a plurality of adjustment columns 611 , and there are a plurality of the adjustment columns 611 , which are symmetrically placed at the front end of the first pipe 6 from top to bottom, and are arranged between the adjustment columns 611 . constant distance.

As a further solution of the present invention, the distance adjusting mechanism 71 is an "F"-shaped adjusting plate 711, the bottom of the adjusting plate 711 is connected to the front end of the second pipe material 7, and is symmetrically arranged on the left and right, and the inner surface of the upper part is locked connected to the outer surface of the adjusting column 611 .

Further, the separation position of the first pipe material 6 and the second pipe material 7 is located at the working channel 13 in the pipe body 1 , and the working channel 13 is equally divided into two along the center axis thereof. The endoscope channel 14 is integrated on the second tube 7 .

That is, in this embodiment, the pipe body 1 is a hollow cylinder with open ends at both ends, and an interlayer 2 is placed in the middle. The endoscope channel 14 has two parts, and further, the interlayer 2 can be designed as the interlayer in the second embodiment at the same time.

The pipe body 1 is of the separation type, the separation cut is located at the axis of the working channel 13, and is divided into two equal parts along its axis. One part is called the first pipe 6, and the other part is called the second pipe 7. The endoscope channels 14 are integrated together. At the front end of the first pipe 6, on the left and right sides, there are a plurality of adjusting columns 611 arranged at equal intervals, and the adjusting columns 611 are arranged in a "1" shape. Located in the front section of the second pipe material 7, on the left and right sides, there are respectively “F” type adjustment plates 711 corresponding to the adjustment columns 611. The pin rotates axially. When in use, the "F"-shaped adjusting plate 711 is clamped on different adjusting posts 611 to achieve the purpose of controlled up-and-down expansion between the first pipe material 6 and the second pipe material 7 .

Finally, it is worth noting that, in order to facilitate the use of the sleeve, in the solution disclosed in this embodiment, the handle 3 is fixedly connected to the head end of the second pipe material 7 . In order to facilitate the hand-held operation during surgery, a through hole for facilitating the movement of the first tubular material 6 is opened in the handle 3 , and the through hole is greater than the maximum offset of the first tubular material 6 . It is also worth noting that when the sleeve is in use, since it will be used together with other restraining devices, there is no need to add an additional restraining mechanism to the tail portion where the first pipe material 6 and the second pipe material 7 are separated.

In this embodiment, the pipe body 1 is also provided with a water inlet channel 21 and a water outlet channel 22, and the side wall of the pipe body 1 is also provided with water inlet connectors respectively connected to the water inlet channel 21 and the water outlet channel 22. 4 and the water outlet connector 5.

As shown in FIGS. 14 to 16 , the dual-channel working sleeve provided by the fourth embodiment of the present invention is basically the same as the third embodiment. Corresponding nut 612, the nut 612 is connected with the first pipe material 6 through a pin shaft (not shown in the figure), and the nut 612 can be adjusted at a certain angle along the pin shaft. On both sides of the outer surface of the front end of the second pipe 7 , there are mounting plates 712 corresponding to the nuts 612 . The mounting plates 712 are provided with adjusting screws 713 . In use, the purpose of adjusting the controlled up-down expansion between the first pipe material 6 and the second pipe material 7 can be achieved by the rotation of the adjusting screw 713 .

As shown in FIGS. 17 to 19 , the dual-channel working sleeve provided by the fifth embodiment of the present invention is basically the same as the third embodiment, except that the separation position of the first pipe material 6 and the second pipe material 7 is along the working channel The central axis of 1 is cut from top to bottom, so that the first pipe 6 and the second pipe 7 are separated from left to right. The top and bottom of the front end of the second pipe 7 are provided with an adjusting plate 711 corresponding to the adjusting column 611 . When the sleeve is working, the first pipe material 6 and the second pipe material 7 can be separated from left to right. It can be understood that the bearing mechanism 61 in the fourth embodiment can also be combined with the distance adjusting mechanism 71 .

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

A dual-channel working sleeve is characterized in that it includes a pipe body, an interlayer and a handle, one end of the pipe body is connected to the handle, the pipe body is in a hollow tubular structure, and two ends of the pipe body are respectively An inlet and an outlet are formed, the outer diameter of the pipe body gradually decreases from the end of the pipe body close to the inlet to the end of the pipe body close to the outlet, and the interlayer is along the length direction of the pipe body It is arranged in the tube body and divides the inside of the tube body into a working channel and an endoscope channel.
The dual-channel working sleeve according to claim 1, wherein the working channel is arranged above the endoscope channel, and the inner upper surface of the tube body and the upper surface of the interlayer jointly form a The working channel, the inner lower surface of the tube body and the lower surface of the interlayer together form the endoscope channel.
The dual-channel working cannula of claim 1, wherein the inner contour of the working channel is larger than the inner contour of the endoscope channel.
The dual-channel working sleeve according to claim 1, wherein the central axis of the working channel and the central axis of the endoscope channel are arranged relatively inclined.
The dual-channel working sleeve according to claim 1, wherein an insertion portion extends from the lower part of the end of the pipe body close to the outlet, and the insertion portion has a sharply protruding duckbill structure.
The dual-channel working sleeve according to claim 1, wherein the outline of the cross-section of the working channel is a circle or a rectangle with rounded corners.
The dual-channel working casing according to claim 1, wherein a cleaning pipeline is further provided in the pipe body, and the cleaning pipeline comprises: a water inlet and outlet channel and a water inlet and outlet connection head, and the water inlet and outlet channels are both It is arranged in a tubular shape, the water inlet and outlet channels are all opened in the interlayer, and one end penetrates the interlayer near the outlet end, and the other end penetrates the two sides of the interlayer near the inlet end respectively, and is facing each other. The two sides of the inner wall of the pipe body are arranged on both sides, the water inlet and outlet connectors are respectively fixed on both sides of the end of the pipe body close to the inlet, and one end of the water inlet and outlet connectors penetrates one end of the pipe body. side and communicate with the other end of the inlet channel.
The dual-channel working sleeve according to claim 1, characterized in that the handle is arranged in a plate structure approximately in the shape of a rhombus, and a through opening is opened in the middle of the plate structure, and the inner diameter of the through opening is the same as the diameter of the through opening. The outer diameter of one end of the pipe body close to the inlet is matched, the four corners of the handle are rounded, and the lengths of the two sides of the upper part of the handle are greater than the lengths of the two sides of the lower part of the handle.
The dual-channel working sleeve according to claim 1, wherein the interlayer and the pipe body are integral structures, and the pipe body is made of a developing material.
The dual-channel working sleeve according to claim 1, wherein the outer wall of the pipe body is engraved with scale lines, and the scale lines are arranged along the length direction of the pipe body.
The dual-channel working sleeve according to claim 1, wherein the pipe body is a hollow and separated tubular structure with a water drop-shaped cross-section, and the inner pipe body is divided into a working channel, an endoscope channel and two inlet and outlet channels through interlayers. The water channel, the working channel and the endoscope channel are all circular channels.
The dual-channel working sleeve according to claim 11, wherein the edge of the upper half of the working channel is coincident with the inner surface of the tube body, and the lowest point of the endoscope channel is aligned with the tube body The inner surface of the tube body is tangent to the inner surface or the inner surface of the tube body coincides with a small part of the bottom of the endoscope channel;

From the end close to the handle to the end far from the handle, the outer diameter of the tube body gradually decreases, and the working channel and the endoscope channel continue to approach until they are tangent; in the untangent part, the working channel and the endoscope channel are The channel and the endoscope channel are connected by a vertical interlayer, which divides the inside of the tube body into four channels. Except for the working channel and the endoscope channel, the other two channels are water inlet and outlet channels, and Axisymmetric distribution;

The inside of the handle is provided with two circular through openings, the inner diameters of which are respectively the same as the diameters of the working channel and the endoscope channel and communicate with each other.
The dual-channel working sleeve according to claim 11, wherein the pipe body is provided with water inlet and outlet connectors on both sides of the pipe body close to one end of the handle for connecting with external water inlet and outlet pipes. The connecting head is fixed on the outer wall of the pipe body.
The dual-channel working sleeve according to claim 11, wherein the lengths of the working channel, the endoscope channel and the two water inlet and outlet channels are all smaller than the length of the pipe body.
The dual-channel working casing according to claim 11, wherein the pipe body is a separate pipe body, which is divided into two parts along its axis, which are a first pipe material and a second pipe material, and the first pipe material is There is a bearing mechanism on the second pipe, a distance adjustment mechanism corresponding to the bearing mechanism is arranged on the second pipe, and the first pipe and the second pipe are adjusted by the cooperation between the bearing mechanism and the distance adjustment mechanism. The opening and closing distance between.
The dual-channel working casing according to claim 15, wherein the bearing mechanism is composed of a plurality of adjustment columns, and the adjustment columns are provided with a plurality of them, which are symmetrically placed at the front end of the first pipe material from top to bottom, A constant distance is set between each adjustment column, the distance adjustment mechanism is an "F"-shaped adjustment plate, the bottom of the adjustment plate is connected to the front end of the second pipe, and is symmetrically arranged on the left and right, and the inner surface of the upper part is clamped on the outer surface of the adjustment column.
The dual-channel working sleeve according to claim 15, wherein the bearing mechanism is a nut, which is arranged symmetrically, the distance adjustment mechanism comprises a mounting plate and an adjusting screw, and the mounting plate and the adjusting screw are placed on the first The outer front ends of the two pipes are arranged symmetrically on the left and right.
The dual-channel working casing according to claim 15, wherein the first pipe material and the second pipe material are separated up and down, and the separation position of the first pipe material and the second pipe material is located in the pipe The working channel is located at the working channel of the body, and the working channel is equally divided into two along its central axis, and the endoscope channel is integrated on the second tube.
The dual-channel working casing according to claim 15, wherein the first pipe material and the second pipe material are separated from left to right, and the separation position of the first pipe material and the second pipe material is located in the working channel the central axis.