CN113974855A

CN113974855A - Drainage catheter and lavage drainage device

Info

Publication number: CN113974855A
Application number: CN202111402907.7A
Authority: CN
Inventors: 汪友勇; 李晓春; 李松栓; 吕著海; 唐志
Original assignee: Micro Tech Nanjing Co Ltd
Current assignee: Micro Tech Nanjing Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-01-28
Also published as: WO2023092796A1

Abstract

The invention provides a drainage catheter and an irrigation drainage device, which relate to the field of medical instruments and comprise a far-end hose, a near-end connecting pipe and a pipe joint; the far-end hose, the near-end connecting pipe and the pipe joint are respectively provided with a liquid passing channel and an instrument channel; the near end of the far-end hose is connected with the far end of the near-end connecting pipe through the pipe joint, the near end of the liquid passing channel of the far-end hose is butted with the far end of the liquid passing channel of the pipe joint, and the far end of the liquid passing channel of the near-end connecting pipe is butted with the near end of the liquid passing channel of the pipe joint; the proximal end of the instrument channel of the distal hose is butted with the distal end of the instrument channel of the pipe joint; the distal end of the instrument channel of the proximal connection tube interfaces with the proximal end of the instrument channel of the tube connector. The invention can insert the drainage tube for lavage and drainage, and simultaneously extend other surgical instruments along the drainage tube to the intracranial dura mater for auxiliary operation, thereby simplifying the operation process, improving the operation efficiency, reducing the occurrence probability of complications in or after the operation and reducing the risk of secondary operation.

Description

Drainage catheter and lavage drainage device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a drainage catheter and an irrigation drainage device.

Background

Clinically, chronic subdural hematoma refers to a patient with intracranial hemorrhage occurring in the subdural space more than three weeks after injury, and the hematoma can generate an occupation effect after being enlarged, so that ventricles and brainstems are stressed, vomiting, disturbance of consciousness and headache are generated, the intracranial pressure is increased mainly, and CT (computed tomography) diagnosis and fruit-breaking operation intervention are required to be performed in time. At present, the main treatment method is skull drilling closed drainage, a doctor inserts a silica gel drainage tube into the intracranial subdural space by opening a hole at the corresponding skull position of a patient, and repeatedly lavages and drains hematoma liquid until the suction liquid is clear so as to clear the hematoma liquid.

The existing irrigation and drainage technology mainly adopts silica gel tube irrigation and drainage, but in the existing irrigation and drainage technology, when a drug administration instrument or other surgical instruments are required to be inserted into the intracranial space to help surgery, other surgical instruments are required to be inserted into a laceration on the basis of inserting the silica gel drainage tube, or the silica gel drainage tube is firstly withdrawn and then inserted into other surgical instruments for operation, so that the operation process is complicated, the time consumption is long, and the probability of complications is high;

in addition, in the existing lavage and drainage technology, a doctor cannot adjust the position of a suction port of the silicone tube in the whole operation process; among the current lavage drainage technique, the doctor also can't real-time supervision subdural hematoma liquid lavage suction condition at the operation in-process, and the doctor can only rely on the operation experience to go to judge whether the hematoma liquid clears away totally, and these all lead to the hematoma liquid to clear away incompletely easily to increase secondary operation risk.

Disclosure of Invention

The invention aims to provide a drainage catheter and an irrigation drainage device, which can at least achieve the following beneficial effects: when the drainage tube is inserted for lavage and drainage, other surgical instruments are inserted into the intracranial dura mater along the drainage tube for auxiliary operation, thereby simplifying the operation process, improving the operation efficiency, reducing the occurrence probability of complications in the operation or after the operation and reducing the risk of secondary operation.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, embodiments of the present invention provide a drainage catheter, including a distal hose, a proximal connection tube, and a tube joint; the far-end hose, the near-end connecting pipe and the pipe joint are respectively provided with a liquid passing channel and an instrument channel; the near end of the far-end hose is connected with the far end of the near-end connecting pipe through the pipe joint, the near end of the liquid passing channel of the far-end hose is butted with the far end of the liquid passing channel of the pipe joint, and the far end of the liquid passing channel of the near-end connecting pipe is butted with the near end of the liquid passing channel of the pipe joint; the proximal end of the instrument channel of the distal hose is butted against the distal end of the instrument channel of the pipe joint; the distal end of the instrument channel of the proximal connection tube interfaces with the proximal end of the instrument channel of the tube joint.

Among the drainage catheter that this embodiment provided, realize the connection of hose and hard tube through the coupling between distal end hose and the near-end connecting pipe, and the drainage function is realized to the liquid passageway of crossing through setting up on each pipe, realize the function of threading auxiliary instrument through the apparatus passageway that sets up on each pipe, thereby, can be when inserting drainage tube lavage drainage, stretch into other surgical instruments auxiliary operations down to intracranial dura mater along this drainage tube, thereby simplify the operation process, improve operation efficiency, reduce the intraoperative or postoperative complication's probability of occurrence, reduce the secondary operation risk.

In an alternative embodiment, the distal end face of the fluid passage of the adapter is disposed around the distal end face of the instrument channel of the adapter.

Further optionally, the flow area of the proximal end face of the fluid passage of the tube joint is equal to the flow area of the distal end face of the fluid passage of the tube joint; and/or the flow area of the proximal end face of the instrument channel of the tube joint is equal to the flow area of the distal end face of the instrument channel of the tube joint.

Optionally, the extension direction of the instrument channel of the pipe joint is inclined to the extension direction of the pipe joint.

In an alternative embodiment, the proximal connection tube comprises a main body outer tube, a distal end of which is connected to a proximal end of the tube joint;

the near-end connecting pipe also comprises a near-end liquid path pipe arranged inside the main body outer pipe, a liquid passing channel is arranged inside the near-end liquid path pipe, and the far end of the near-end liquid path pipe is hermetically connected with the near end of the liquid passing channel of the pipe joint; and/or an instrument protection tube is arranged inside the instrument channel of the pipe joint, and an instrument channel is arranged inside the instrument protection tube.

In an alternative embodiment, at least one steering wire channel is further respectively arranged on the distal hose, the proximal connecting pipe and the pipe joint; the near ends of the steering wire channels of the far-end hose are in one-to-one butt joint with the far ends of the steering wire channels of the pipe joint; the far ends of the steering wire channels of the near-end connecting pipes are in one-to-one butt joint with the near ends of the steering wire channels of the pipe joints.

In this optional embodiment, further optionally, the distal hose comprises at least three lumens, at least one of the lumens being a fluid passage, at least one of the lumens being an instrument passage, and at least one of the lumens being a steering wire passage.

Optionally, a distal end face of the tube joint is provided with a distal end connection insertion tube, proximal ends of the distal end connection insertion tubes are hermetically inserted into a distal end of a steering wire channel of the tube joint in a one-to-one correspondence manner, and distal ends of the distal end connection insertion tubes are hermetically inserted into a proximal end of a steering wire channel of the distal end hose in a one-to-one correspondence manner.

Optionally, the proximal connection tube comprises a main body outer tube, a distal end of which is connected with a proximal end of the tube joint; the near-end connecting pipe further comprises a steering wire protecting pipe arranged inside the main body outer pipe, a pipe cavity of the steering wire protecting pipe forms a steering wire channel, and the far end of the steering wire protecting pipe is in one-to-one corresponding sealing connection with the steering wire channel of the pipe joint.

Further optionally, a proximal end connection insertion tube is arranged on the proximal end face of the pipe joint, the distal ends of the proximal end connection insertion tubes are in one-to-one sealing insertion connection with the proximal interior of the steering wire channel of the pipe joint, and the proximal ends of the proximal end connection insertion tubes are in one-to-one sealing insertion connection with the distal end of the steering wire protection tube; or the steering wire protection tube penetrates through the steering wire channel of the pipe joint, the far end of the steering wire protection tube protrudes out of the far end face of the pipe joint, and the far ends of the steering wire protection tubes are in one-to-one corresponding sealing insertion connection with the inside of the near end of the steering wire channel of the far-end hose.

In an optional embodiment, at least one of the distal hose, the proximal connecting tube and the tube joint is further provided with a camera routing channel.

Further optionally, the tube joint and the near-end connecting tube are respectively provided with a camera wiring channel, and the far-end hose is not provided with a camera wiring channel; the far end of the camera wiring channel of the pipe joint is communicated with the near end of the liquid passing channel of the far-end hose, and the far end of the camera wiring channel of the near-end connecting pipe is communicated with the near end of the camera wiring channel of the pipe joint.

In an alternative embodiment, the proximal connection tube comprises a main body outer tube, and an outer tube connector is connected to the distal end of the main body outer tube, and sleeved on and connected to the outside of the proximal end of the tube joint.

Further optionally, the proximal end of the distal hose is inserted into the distal interior of the adapter, and the distal inner diameter of the adapter is smaller than the proximal inner diameter of the adapter.

In an alternative embodiment, the distal end face and/or the proximal end face of the pipe joint is provided with a glue pouring groove.

In various alternative embodiments, the term "and/or" means that the structures before and/or after "are provided simultaneously or in the alternative.

In addition, a second aspect of an embodiment of the invention also provides an irrigation drainage device comprising a drainage catheter according to any of the preceding embodiments. Since the irrigation drainage device provided by the embodiment of the invention comprises the drainage catheter provided by the first aspect, the irrigation drainage device provided by the embodiment of the invention can achieve all the beneficial effects which can be achieved by the drainage catheter provided by the first aspect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of an integrated assembly structure of a drainage catheter and a steering wire according to an embodiment of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is an enlarged view of a portion B of FIG. 1;

FIG. 5 is an exploded view of the structure of FIG. 4;

FIG. 6 is an enlarged view of a portion C of FIG. 2;

FIG. 7 is an isometric view of the proximal end construction of the distal hose of the drainage catheter provided in accordance with an embodiment of the invention;

FIG. 8 is an isometric view of the overall construction of a tube connector in a drainage catheter according to an embodiment of the present invention from one perspective;

FIG. 9 is an isometric view of the overall construction of a tube connector in a drainage catheter according to an alternative aspect of the present invention;

FIG. 10 is a view of the distal end face of a tube connector in a drainage catheter according to an embodiment of the present invention;

FIG. 11 is a view of the proximal end face of a tube connector in a drainage catheter according to an embodiment of the present invention;

FIG. 12 is an elevation view of a coupling in a drainage catheter provided in accordance with an embodiment of the present invention;

FIG. 13 is a cross-sectional view taken along line D-D of FIG. 12;

FIG. 14 is a schematic view of the overall configuration of a tubular connector in a drainage catheter according to an embodiment of the present invention from one perspective;

FIG. 15 is a schematic view of the overall structure of a drainage catheter according to another aspect of the present invention;

FIG. 16 is a schematic view of an alternative structure of the connection between the distal soft tip and the steering wire of the irrigation drainage device according to the embodiment of the present invention;

fig. 17 is a cross-sectional view of fig. 16.

Icon: 100-a liquid passing channel; 200-an instrument channel; 300-steering wire channel; 400-camera routing channel; 1-a distal hose; 2-a proximal connection tube; 21-main body outer tube; 211-outer tube connection; 2111-snap-fit hole; 22-proximal fluid line tube; 23-instrument protection tube; 24-steering wire protection tube; 3-pipe joint; 301-glue pouring groove; 302-buckling; 31-a distal connection cannula; 32-a proximal connection cannula; 4-steering wires; 5-a cable; 51-a camera; 61-a distal portion; 62-a hard transition piece; 7-drainage holes; 8-perforating the instrument; 9-camera module fixed cavity channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "distal", "proximal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention conventionally place when in use, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Example one

The present embodiment provides a drainage catheter, which, referring to fig. 1 to 6, includes a distal hose 1, a proximal connection tube 2, and a tube joint 3; the far-end hose 1, the near-end connecting pipe 2 and the pipe joint 3 are respectively provided with a liquid passing channel 100 and an instrument channel 200; the near end of the far-end hose 1 is connected with the far end of the near-end connecting pipe 2 through the pipe joint 3, the near end of the liquid passing channel 100 of the far-end hose 1 is butted with the far end of the liquid passing channel 100 of the pipe joint 3, and the far end of the liquid passing channel 100 of the near-end connecting pipe 2 is butted with the near end of the liquid passing channel 100 of the pipe joint 3; the proximal end of the instrument channel 200 of the distal hose 1 interfaces with the distal end of the instrument channel 200 of the adapter 3; the distal end of the instrument channel 200 of the proximal connector tube 2 interfaces with the proximal end of the instrument channel 200 of the adapter 3.

Among the drainage catheter that this embodiment provided, realize the connection of hose and hard tube through coupling 3 between distal end hose 1 and the near-end connecting pipe 2, and the drainage function is realized to the liquid passageway 100 of crossing that sets up through each pipe, the function of wearing to draw auxiliary instrument is realized to the apparatus passageway 200 that sets up through each pipe, thereby, can be when inserting drainage tube lavage drainage, stretch into other surgical instruments auxiliary operations down to intracranial dura mater along this drainage tube, thereby simplify the operation process, improve operation efficiency, reduce the intraoperative or postoperative complication's probability of occurrence, reduce the secondary operation risk.

In this embodiment, in order to facilitate the connection of the proximal connecting tube 2 with the tube connector 3, it is preferable that the proximal end surface of the fluid passage 100 of the tube connector 3 and the proximal end surface of the instrument passage 200 are both circular or other regular shapes, and the space of the instrument passage 200 is ensured to allow the distal end of the surgical instrument to pass through, but since the distal hose 1 is extended into the cranium and has a certain diameter limitation, it is difficult to ensure that the fluid passage 100 has a large excess flow flux if the distal end surface of the fluid passage 100 of the tube connector 3 and the distal end surface of the instrument passage 200 are both circular or other regular shapes, while designing the instrument passage 200, and therefore, in an alternative embodiment of this embodiment, it is preferable that the distal end surface of the fluid passage 100 of the tube connector 3 is disposed around the distal end surface of the instrument passage 200 of the tube connector 3, the surrounding manner includes, but is not limited to, completely surrounding or semi-surrounding or irregularly surrounding, that is, the distal end surface of the liquid passing channel 100 of the tube joint 3 is shaped to avoid that when the distal end surface of the liquid passing channel 100 of the tube joint 3 is round or has other regular shapes, and shares one end surface with the instrument channel 200, the flow area of the distal end surface of the liquid passing channel 100 of the tube joint 3 is too small, so as to ensure that the flow of the liquid passing stream is large when the liquid passing channel 100 of the tube joint 3 drains. The proximal end surface of the liquid passing passage 100 of the pipe joint 3 is not limited thereto, and may be formed into a circular shape or other regular shapes to facilitate the proximal joint.

It is further preferable, but not limited to, that the flow area of the proximal end face of the liquid passing channel 100 of the tube joint 3 is equal to the flow area of the distal end face of the liquid passing channel 100 of the tube joint 3; and/or the flow area of the proximal end face of instrument channel 200 of coupling 3 is equal to the flow area of the distal end face of instrument channel 200 of coupling 3.

Preferably, but not exclusively, the extension direction of the instrument channel 200 of the pipe joint 3 is inclined to the extension direction of the pipe joint 3. With continued reference to fig. 1 to 6, in the present embodiment, the proximal connection tube 2 includes a main body outer tube 21, and a distal end of the main body outer tube 21 is connected to a proximal end of the tube joint 3.

In some further optional embodiments of the present embodiment, the proximal connection tube 2 further includes a proximal fluid path tube 22 disposed inside the main body outer tube 21, a fluid passage 100 is disposed inside the proximal fluid path tube 22, and a distal end of the proximal fluid path tube 22 is hermetically connected to a proximal end of the fluid passage 100 of the tube joint 3 by glue or in an interference fit manner; and/or, the instrument channel 200 of the tube joint 3 is internally provided with an instrument protection tube 23, the instrument channel 200 of the instrument protection tube 23 is internally provided with the instrument channel 200, the instrument protection tube 23 can be a tube, the distal end of the tube can extend to the interior of the distal hose 1, the instrument channel 200 of the tube joint 3 can also be internally provided, the proximal end of the tube can extend to the interior of the main body outer tube 21, and the instrument channel 200 of the tube joint 3 can also be internally provided, preferably, the distal end of the tube can extend to the interior of the distal hose 1, and the proximal end of the tube can extend to the interior of the main body outer tube 21. Alternatively, the instrument protection tube 23 comprises a multi-segment tube, wherein preferably, but not limited to: the proximal end of a section of tube is connected to the inside of the distal end of the instrument channel 200 of the tube joint 3, and the distal end extends to the inside of the distal hose 1; the distal end of the other tube is connected to the inside of the proximal end of the instrument channel 200 of the tube joint 3, and the proximal end extends to the inside of the outer tube 21 of the main body; the tube section may or may not be provided inside the instrument channel 200 of the tube connector 3. In this embodiment, the instrument protection tube 23 is preferably, but not limited to, attached to the inside of the instrument channel 200 by interference fit. Wherein "and/or" means that, in any embodiment, the proximal fluid path tube 22 and the instrument protection tube 23 are alternatively or simultaneously disposed.

With continued reference to fig. 1-6, in some alternative embodiments of the present embodiment, at least one steering wire channel 300 is further provided on the distal hose 1, the proximal connection tube 2 and the tube connector 3, respectively; the near ends of the steering wire channels 300 of the far-end hose 1 are in one-to-one butt joint with the far ends of the steering wire channels 300 of the pipe joint 3; the far ends of the steering wire channels 300 of the near end connecting pipe 2 are in one-to-one butt joint with the near ends of the steering wire channels 300 of the pipe joint 3; thereby, the accessible should turn to silk passageway 300 and realize making the drainage tube can cooperate the function that turns to silk 4 and turn to, specifically, during the assembly, as shown in fig. 1 to fig. 6, turn to silk passageway 300 inside and penetrate and turn to silk 4, then, the distal end that will turn to silk 4 is fixed in the distal end of distal end hose 1, through the mode that turns to silk 4 to the proximal end direction tractive, make the distal end of distal end hose 1 buckle and turn to, and then change the position in distal end hose 1 distal end drainage hole, thereby realize the multi-angle drainage, in order to help the doctor to clear away hematoma liquid, reduce the secondary operation risk.

In these alternative embodiments, it is preferable that the distal end hose 1 includes at least three lumens, at least one lumen being the fluid passing channel 100, at least one lumen being the instrument channel 200, and at least one lumen being the steering wire channel 300, as shown in fig. 7; at least two turning wire channels 300 are provided on each tube. The positional relationship between the lumen as the fluid passage 100 and the lumen as the steering wire passage 300 is not exclusive, but the lumen as the fluid passage 100 may be located in the middle of the distal tube 1, and a through hole extending in the proximal direction of the distal tube 1 along the distal end of the distal tube 1, that is, a small lumen may be provided as the steering wire passage 300 inside the tube wall as the lumen of the fluid passage 100, as shown in fig. 7.

To ensure the sealing of the proximal end of the steering wire channel 300 of the distal hose 1 and the distal end of the steering wire channel 300 of the tube connector 3 in one-to-one abutment, and to avoid blood from entering into the steering wire channel 300, it is further preferred, but not limited to, with reference to fig. 8 and 10, in conjunction with fig. 1 to 7, the far end face of the pipe joint 3 is provided with a far end connecting insertion pipe 31, the near ends of the far end connecting insertion pipes 31 are in one-to-one sealing insertion in the far end of the steering wire channel 300 of the pipe joint 3, the far ends of the far end connecting insertion pipes 31 are in one-to-one sealing insertion in the near end of the steering wire channel 300 of the far end hose 1, the insertion positions are preferably in interference fit, thus, the proximal end of the steering wire passage 300 of the distal hose 1 and the distal end of the steering wire passage 300 of the adapter 3 are sealed by the distal connection cannula 31, and the steering wire 4 passes through the distal connection cannula 31 when assembled.

With continued reference to fig. 1 to 6, in some alternative embodiments of the present embodiment, it is preferable that the proximal connection tube 2 further includes a turning wire protection tube 24 disposed inside the main body outer tube 21, a lumen of the turning wire protection tube 24 forms a turning wire channel 300, and a distal end of the turning wire protection tube 24 is in one-to-one sealing connection with the turning wire channel 300 of the tube joint 3. By arranging the steering wire protection tube 24, the steering wire 4 can be protected, and the problems of wire breakage and the like in the operation process are avoided; the steering wire protection tube 24 may be, but is not limited to, a spring tube or a stainless steel tube or other tubular structure.

Preferably, the proximal end of the steering wire protection tube 24 may be, but not limited to, welded or glued or integrally connected or fixedly connected to the tube connector 3, wherein, in order to ensure the sealing performance of the one-to-one butt joint between the distal end of the steering wire channel 300 of the proximal connection tube 2 and the proximal end of the steering wire channel 300 of the tube connector 3, and prevent blood from entering into the steering wire channel 300, further preferably, but not limited to, referring to fig. 9 and fig. 11 to fig. 13, in combination with fig. 1 to fig. 7, the proximal end face of the tube connector 3 is provided with the proximal connection insertion tube 32, the distal ends of the proximal connection insertion tubes 32 are hermetically inserted into the proximal end of the steering wire channel 300 of the tube connector 3, the proximal ends of the proximal connection insertion tubes 32 are hermetically inserted into the distal end of the steering wire protection tube 24, specifically, the proximal ends of the proximal connection insertion tubes 32 are hermetically inserted into the distal end of the steering wire protection tube 24, or the distal ends of the steering wire protection tubes 24 are correspondingly inserted into the proximal ends of the proximal connecting insertion tubes 32 one by one; the plug connection is preferably an interference fit, so that the proximal connection cannula 32 seals between the distal end of the steering wire channel 300 on the proximal connection piece 2 and the proximal end of the steering wire channel 300 on the adapter 3, through which the steering wire 4 passes during assembly. In these alternative embodiments, the distal end connection insertion tube 31 is not provided, but the turning wire protection tube 24 is inserted through the turning wire channel 300 of the pipe joint 3, and the distal end of the turning wire protection tube 24 protrudes from the distal end surface of the pipe joint 3, and the distal ends of the turning wire protection tubes 24 are hermetically inserted into the proximal end of the turning wire channel 300 of the distal hose 1 in a one-to-one correspondence.

Referring to fig. 1 to 6 and 8 to 11, in some optional embodiments of this embodiment, preferably, at least one of the far-end hose 1, the near-end connecting pipe 2, and the pipe joint 3 is further provided with a camera routing channel 400, where the camera routing channel 400 is used to pass through a cable 5 connected to the camera 51, and the drainage catheter provided in this embodiment can be used in cooperation with a camera module, and when assembling, the cable 5 of the camera module passes through the camera routing channels 400 arranged in the three pipes, i.e., the far-end hose 1, the near-end connecting pipe 2, and the pipe joint 3, and passes through the liquid passing channel 100 of a pipe, in which the camera routing channel 400 is not arranged, of the three pipes; or, the far-end hose 1, the near-end connecting pipe 2 and the pipe joint 3 are all provided with the camera routing channel 400, the near end of the camera routing channel 400 of the far-end hose 1 is butted with the far end of the camera routing channel 400 of the pipe joint 3, the far end of the camera routing channel 400 of the near-end connecting pipe 2 is butted with the near end of the camera routing channel 400 of the pipe joint 3, and the cable 5 of the camera module sequentially penetrates through the camera routing channels 400 of the far-end hose 1, the pipe joint 3 and the near-end connecting pipe 2, wherein preferably, the pipe joint 3 and the near-end connecting pipe 2 are respectively provided with the camera routing channel 400, and the far-end hose 1 is not provided with the camera routing channel 400; the far end of the camera wiring channel 400 of the pipe joint 3 is communicated with the near end of the liquid passing channel 100 of the far-end hose 1, the far end of the camera wiring channel 400 of the near-end connecting pipe 2 is communicated with the near end of the camera wiring channel 400 of the pipe joint 3, and the cable 5 of the camera module sequentially penetrates through the liquid passing channel 100 of the far-end hose 1, the camera wiring channel 400 of the pipe joint 3 and the camera wiring channel 400 of the near-end connecting pipe 2. These optional implementation modes of this embodiment can make this drainage catheter's distal end possess the monitoring function, make the doctor can be in the operation in-process real-time supervision subdural hematoma liquid lavage suction condition, are favorable to clearing away totally hematoma liquid, reduce the secondary operation risk.

Further, referring to fig. 14 and 15 in combination with fig. 1 to 6, in some alternative embodiments of the present embodiment, an outer tube connector 211 is screwed or snapped 302 on or otherwise connected to the distal end of the main body outer tube 21 of the proximal connection tube 2, the outer tube connector 211 is sleeved and screwed or glued or snapped 302 is connected or otherwise connected to the proximal end outside of the tube joint 3, preferably, but not limited to, as shown in fig. 4 to 6, and fig. 8, 9 and 13, a snap hole 2111 is provided on the peripheral wall of the outer tube connector 211, a snap 302 is provided on the peripheral wall of the tube joint 3, the proximal end of the tube joint 3 is inserted into the outer tube connector 211 and connected to the outer tube connector 211 by snapping the snap 302 into the snap hole 2111, preferably, the proximal end of the distal hose 1 is inserted into the distal end of the tube joint 3, and the distal inner diameter of the tube joint 3 is smaller than the proximal inner diameter of the tube joint 3, to ensure that the distal hose 1 has a smaller diameter to make the distal hose 1 easier to enter into the cranium of the patient.

Referring to fig. 8 to 11, a glue filling groove 301 is formed on the distal end surface and/or the proximal end surface of the tube joint 3, so that the sealing performance of the butt joint among the channels of the distal hose 1, the tube joint 3, and the proximal connection tube 2 can be ensured by filling glue into the glue filling groove 301 during assembly.

In addition, in the present embodiment, preferably, a calibration line extending along the proximal end of the distal end hose 1 in the distal direction is further provided on the outer tube wall of the distal end hose 1.

Example two

The present embodiment provides an irrigation drainage device comprising a drainage catheter as provided in any of the alternative embodiments of the first aspect of the present invention.

Since the irrigation drainage device provided by the present embodiment includes the drainage catheter described in the first embodiment, the irrigation drainage device provided by the present embodiment can achieve all the beneficial effects that the drainage catheter can achieve in the first embodiment, and can be obtained by referring to the functional effects of the drainage catheter provided by the first embodiment.

In addition, in some optional embodiments of the present embodiment, the drainage tube is assembled for use with a distal soft head, the distal soft head is made of a soft material, and the proximal end of the distal soft head is connected to the distal end of the distal hose 1, or, as shown in fig. 16 and 17, the distal soft head and the distal hose 1 are of the same structure, and a drainage hole is formed in the distal tube wall of the distal hose 1, and/or a drainage hole 7 is formed in the distal soft head, and the drainage hole 7 is communicated with the liquid passing channel 100 of the distal hose 1; an instrument through hole 8 is also formed in the distal soft head 1, and the instrument through hole 8 is communicated with the instrument channel 200 of the distal soft head 1.

In some further alternative embodiments, the distal soft head is a steerable head, referring to fig. 16 and 17, comprising a distal portion 61, a hard transition piece 62, and at least one steering wire 4. Wherein: distal portion 61 is made of a soft material, and a hard transition piece 62 is secured to the distal end of distal portion 61; the proximal end of the distal portion 61 is connected to the distal end of the distal hose 1, or, as shown in fig. 16 and 17, the distal portion 61 is of the same structure as the distal hose 1, i.e., a rigid transition piece 62 is directly fixed inside the distal end of the distal hose 1; the far-end tube wall of the far-end hose 1 and/or the hard transition piece 62 are/is provided with drainage holes which are communicated with the liquid passing channel 100 of the far-end hose 1; the hard transition piece 62 is also provided with an instrument through hole 8, and the instrument through hole 8 is communicated with the instrument channel 200 of the distal hose 1; the far end of the steering wire 4 is fixed on the hard transition piece 62, and the steering wire 4 sequentially passes through the steering wire channel 300 of the far-end hose 1, the steering wire channel 300 of the pipe joint 3 and the steering wire channel 300 of the near-end connecting pipe 2 from the far end to the near end; the steering wire 4 can pull the hard transition piece 62 under the action of a pulling force towards the proximal end to drive the distal end part 61 to bend and steer, so that multi-angle drainage is realized.

In some further optional embodiments, a camera module fixing cavity 9 is further disposed on the distal end soft head, the camera module fixing cavity 9 is communicated with the liquid passing channel 100 or the camera routing channel 400 of the drainage catheter, the camera 51 passes through or is fixed to the camera module fixing cavity 9, the camera 51 is aligned with the distal end direction of the distal end soft tube 1, the cable 5 passes through the liquid passing channel 100 or the camera routing channel 400 of the drainage catheter, and in the case that the distal end soft head is the steerable head, the camera module fixing cavity 9 may be disposed on the hard transition piece 62.

Other structures of the irrigation drainage device provided by the embodiment can be obtained by referring to the structure of the drainage tube provided by the first embodiment.

Finally, it should be noted that:

1. in the specification, "and/or" means that the structure before "and/or" is provided at the same time or alternatively with the structure after "and/or";

2. the embodiments in the present description are all described in a progressive manner, each embodiment focuses on the differences from the other embodiments, and the same and similar parts among the embodiments can be referred to each other; the above embodiments in the present specification are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drainage catheter is characterized by comprising a far-end hose (1), a near-end connecting pipe (2) and a pipe joint (3);

the far-end hose (1), the near-end connecting pipe (2) and the pipe joint (3) are respectively provided with a liquid passing channel (100) and an instrument channel (200);

the near end of the far-end hose (1) is connected with the far end of the near-end connecting pipe (2) through the pipe joint (3), the near end of the liquid passing channel (100) of the far-end hose (1) is butted with the far end of the liquid passing channel (100) of the pipe joint (3), and the far end of the liquid passing channel (100) of the near-end connecting pipe (2) is butted with the near end of the liquid passing channel (100) of the pipe joint (3); the proximal end of the instrument channel (200) of the distal hose (1) is butted with the distal end of the instrument channel (200) of the pipe joint (3); the distal end of the instrument channel (200) of the proximal connecting tube (2) is butted against the proximal end of the instrument channel (200) of the tube joint (3).

2. The drainage catheter according to claim 1, characterized in that the distal end face of the liquid passing channel (100) of the tube joint (3) is disposed around the distal end face of the instrument channel (200) of the tube joint (3).

3. The drainage catheter according to claim 2, characterized in that the flow area of the proximal end face of the flow-through channel (100) of the adapter (3) is equal to the flow area of the distal end face of the flow-through channel (100) of the adapter (3); and/or the flow area of the proximal end face of the instrument channel (200) of the tube joint (3) is equal to the flow area of the distal end face of the instrument channel (200) of the tube joint (3).

4. The drainage catheter according to claim 2, characterized in that the direction of extension of the instrument channel (200) of the tube adapter (3) is oblique to the direction of extension of the tube adapter (3).

5. The drainage catheter of claim 1,

the near-end connecting pipe (2) comprises a main body outer pipe (21), and the far end of the main body outer pipe (21) is connected with the near end of the pipe joint (3);

the near-end connecting pipe (2) further comprises a near-end liquid path pipe (22) arranged inside the main body outer pipe (21), a liquid passing channel (100) is arranged inside the near-end liquid path pipe (22), and the far end of the near-end liquid path pipe (22) is connected with the near end of the liquid passing channel (100) of the pipe joint (3) in a sealing mode; and/or an instrument protection tube (23) is arranged inside the instrument channel (200) of the pipe joint (3), and an instrument channel (200) is arranged inside the instrument protection tube (23).

6. The drainage catheter of claim 1,

the far-end hose (1), the near-end connecting pipe (2) and the pipe joint (3) are respectively provided with at least one steering wire channel (300);

the near ends of the steering wire channels (300) of the far-end hose (1) are in one-to-one butt joint with the far ends of the steering wire channels (300) of the pipe joints (3); the far ends of the steering wire channels (300) of the near end connecting pipes (2) are in one-to-one butt joint with the near ends of the steering wire channels (300) of the pipe joints (3).

7. The drainage catheter according to claim 6, characterized in that the distal hose (1) comprises at least three lumens, at least one as a through-flow channel (100), at least one as an instrument channel (200) and at least one as a steering wire channel (300).

8. The drainage catheter according to claim 6, characterized in that the distal end face of the adapter (3) is provided with a distal connection cannula (31); the near ends of the far-end connecting insertion pipes (31) are in one-to-one corresponding sealing insertion in the far-end of the steering wire channel (300) of the pipe joint (3), and the far ends of the far-end connecting insertion pipes (31) are in one-to-one corresponding sealing insertion in the near-end of the steering wire channel (300) of the far-end hose (1).

9. The drainage catheter of claim 6,

the near-end connecting pipe (2) is characterized by further comprising a steering wire protecting pipe (24) arranged inside the main body outer pipe (21), a pipe cavity of the steering wire protecting pipe (24) forms a steering wire channel (300), and the far end of the steering wire protecting pipe (24) is in one-to-one corresponding sealing connection with the steering wire channel (300) of the pipe joint (3).

10. The drainage catheter according to claim 9, characterized in that the proximal end face of the adapter (3) is provided with a proximal connection cannula (32); the far ends of the near-end connecting insertion pipes (32) are in one-to-one corresponding sealing insertion in the near-end of the steering wire channel (300) of the pipe joint (3), and the near ends of the near-end connecting insertion pipes (32) are in one-to-one corresponding sealing insertion in the far ends of the steering wire protection pipes (24);

alternatively, the first and second electrodes may be,

the steering wire protection tube (24) penetrates through the steering wire channel (300) of the pipe joint (3), the far end of the steering wire protection tube (24) protrudes out of the far end face of the pipe joint (3), and the far ends of the steering wire protection tubes (24) are in one-to-one corresponding sealing insertion connection with the inside of the near end of the steering wire channel (300) of the far-end hose (1).

11. The drainage catheter of any of claims 1 to 10,

at least one of the far-end hose (1), the near-end connecting pipe (2) and the pipe joint (3) is also provided with a camera wiring channel (400).

12. The drainage catheter according to claim 11, wherein the tube joint (3) and the proximal connecting tube (2) are respectively provided with a camera wiring channel (400), and the distal hose (1) is not provided with the camera wiring channel (400);

the far end of the camera routing channel (400) of the pipe joint (3) is communicated with the near end of the liquid passing channel (100) of the far-end hose (1), and the far end of the camera routing channel (400) of the near-end connecting pipe (2) is communicated with the near end of the camera routing channel (400) of the pipe joint (3).

13. The drainage catheter of any of claims 1 to 10,

the near-end connecting pipe (2) comprises a main body outer pipe (21), the far end of the main body outer pipe (21) is connected with an outer pipe connecting piece (211), and the outer pipe connecting piece (211) is sleeved and connected to the outside of the near end of the pipe joint (3).

14. The drainage catheter according to claim 13, characterized in that the proximal end of the distal hose (1) is plugged inside the distal end of the adapter (3) and the distal inner diameter of the adapter (3) is smaller than the proximal inner diameter of the adapter (3).

15. The drainage catheter according to any of the claims 1 to 10, characterized in that the distal end face and/or the proximal end face of the adapter (3) is provided with a glue groove (301).

16. An irrigation drainage device comprising a drainage catheter according to any of claims 1 to 15.