Abdominal cavity drainage tube with separable connector
By designing a separable abdominal drainage tube with the joint, using the structure of the telescopic tube and the puncture needle, the problem of difficulty in placement of the abdominal drainage tube after surgery in the prior art is solved, and a more efficient placement process and lower contamination risk is achieved. .
Patent Information
- Application Number
- CN202520000673.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2035-01-02
AI Technical Summary
The existing abdominal drainage tube is difficult to place after surgery, which increases the work burden of the doctor.
A abdominal drainage tube with a joint separable joint is designed, and the drainage tube body and the locking member are detached. The structure of the telescopic tube and the puncture needle is used to make the drainage tube body and the joint directly pass through the poking card in the separate state, simplifying the The placement process of abdominal drainage tube.
It reduces the difficulty of placing an abdominal drainage tube after the operation, improves the work efficiency of the doctor, and reduces the risk of contamination inside the joint.
Smart Images
Figure CN222426964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical instruments, in particular to an abdominal cavity drainage tube with a detachable joint. Background Art
[0002] A peritoneal drainage tube is a medical device that guides pus, blood, and fluid accumulated in the human body cavity to the outside of the body to prevent postoperative infection and promote wound healing.
[0003] Although the current abdominal drainage tube can be used for drainage, prevent postoperative infection and promote wound healing, the inventors found that the current abdominal drainage tube still has some shortcomings during actual use, specifically:
[0004] Usually, the end of the abdominal drainage tube placed outside the body is provided with a joint, and the joint is difficult to pass through the poking card. Therefore, after abdominal surgery, in the process of placing the abdominal drainage tube in the patient's abdomen, it is usually necessary to first put the abdominal drainage tube into the patient's body, and then use surgical forceps or other clamping tools to reach into and clamp the abdominal drainage tube from the poking card on the abdominal wall. Then, in the process of removing the poking card from the patient's abdominal wall, the clamped abdominal drainage tube is moved together with the surgical forceps and the poking card, so that the abdominal drainage tube is extended from the patient's abdominal cavity, so that one end of the abdominal drainage tube is located in the abdominal cavity and the other end is located outside the body. With this placement, the doctor usually needs to find and clamp the abdominal drainage tube in the abdominal cavity before pulling the end of the abdominal drainage tube out of the abdominal cavity to the outside of the body. This increases the difficulty of placing the abdominal drainage tube after surgery, which is not conducive to improving the doctor's work efficiency.
[0005] Therefore, based on the above-mentioned shortcomings, there is an urgent need to design a peritoneal drainage tube with a detachable joint to reduce the difficulty of placing the peritoneal drainage tube after surgery. Utility Model Content
[0006] The purpose of the utility model is to provide a peritoneal drainage tube with a detachable joint in view of the above-mentioned shortcomings of the current peritoneal drainage tube in actual use, so as to reduce the difficulty of placing the peritoneal drainage tube after surgery.
[0007] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:
[0008] A peritoneal drainage tube with a detachable joint, comprising a drainage tube body and a joint, wherein a first cavity is formed in the drainage tube body;
[0009] The joint includes an outer sleeve, a telescopic tube, a puncture needle and a locking piece, wherein the locking piece is connected to the outer sleeve and is used to be detachably connected to the drainage tube body. The telescopic tube is provided with a first cover body, which is used to block the telescopic tube. The drainage tube body is provided with a second cover body, which is used to block the drainage tube body.
[0010] When the drainage tube body is separated from the locking piece, the puncture needle is located in the telescopic tube;
[0011] When the drainage tube body cooperates with the locking piece, the telescopic tube abuts against the drainage tube body and shortens the telescopic tube, and the puncture needle extends out of the telescopic tube, punctures the first cover body and the second cover body in sequence, and then extends into the first cavity, so that the first cavity and the puncture needle are connected.
[0012] As a preferred technical solution of the present application, the locking piece is in an annular structure, the locking piece is rotatably connected to the outer sleeve, and the locking piece is used to be threadedly connected to the outer wall of the drainage tube body.
[0013] As a preferred technical solution of the present application, the first cover body and the second cover body are both made of rubber material. After the puncture needle pierces the first cover body and the second cover body, the drainage tube body and the puncture needle are connected; after the puncture needle is pulled out of the first cover body and the second cover body, the first cover body resumes the blockage of the telescopic tube, and the second cover body resumes the blockage of the drainage tube body.
[0014] As a preferred technical solution of the present application, the telescopic tube includes a main tube, a secondary tube and a spring, the spring is elastic, the secondary tube is sleeved with the main tube, one end of the spring abuts against the main tube, and the other end abuts against the secondary tube, the telescopic tube has an initial state, when the telescopic tube is in the initial state, the spring provides elastic force to make the puncture needle located in the telescopic tube;
[0015] When the telescopic tube is gradually shortened, the puncture needle gradually extends out of the telescopic tube, and the deformation amount of the spring gradually increases.
[0016] As a preferred technical solution of the present application, an abutment portion is provided in the drainage tube body, and the auxiliary tube is sleeved in the main tube. When the drainage tube body cooperates with the locking piece, the abutment portion abuts against the auxiliary tube, and the inner wall of the first cavity fits against the outer wall of the main tube.
[0017] As a preferred technical solution of the present application, a second cavity is provided in the puncture needle, the puncture needle is connected to the drainage tube body through the second cavity, and the end of the puncture needle for puncturing the first cover body is a cone-shaped structure.
[0018] As the priority technical solution of the present application, two first cavities are formed in the drainage tube body, one of which is used for draining the fluid in the abdominal cavity, and the other is used for injecting flushing fluid into the patient's abdominal cavity; a single first cavity is adapted to a single telescopic tube and a single insertion needle.
[0019] As a preferred technical solution of the present application, the connector also includes a connector body, and the outer sleeve, telescopic tube and puncture needle are all connected to the connector body. When the drainage tube body cooperates with the locking piece, the drainage tube body, the puncture needle and the connector body are connected.
[0020] As a preferred technical solution of the present application, a third cavity is formed in the connector body, a single third cavity is connected to a single telescopic tube, and the number of the third cavities matches the number of the telescopic tubes.
[0021] As a priority technical solution of the present application, a first extension tube and a second extension tube are provided on the connector body, wherein one third cavity is connected to the first extension tube, and the other third cavity is connected to the second extension tube, the first extension tube is used to be connected to the flushing device, and the second extension tube is used to be connected to the drainage bag device.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] 1. In the solution of the present application, when the drainage tube body and the locking piece are in a separated state, the puncture needle is located in the telescopic tube, the first cover body blocks the telescopic tube, and the second cover body blocks the drainage tube body. At this time, the drainage tube body and the joint are in a separated state, so that during the placement of the abdominal drainage tube after surgery, the drainage tube body can be directly inserted into the patient's abdominal cavity through the puncture card. Since the drainage tube body is not connected to the joint at this time, the puncture card can pass through the drainage tube body during the process of removing the puncture card from the patient's abdominal wall, thereby separating the puncture card from the drainage tube body, and then the drainage tube body is matched with the locking piece. , so that the connector is connected to the drainage tube body, there is no need to put the abdominal drainage tube into the patient's abdominal cavity in advance, which reduces the difficulty of placing the abdominal drainage tube after surgery and is conducive to improving the doctor's work efficiency. At the same time, when the drainage tube body and the connector are in a disconnected state, the first cover body blocks the telescopic tube, and the second cover body blocks the drainage tube body, so that liquid can be prevented from seeping out from the end of the drainage tube body, and the risk of contamination inside the connector is also reduced. At this time, the puncture needle is located in the telescopic tube, and the locking member cooperates with the telescopic tube and the first cover body to protect the puncture needle, which can prevent the puncture needle from stabbing the patient or medical staff;
[0024] 2. Further, the first cover body and the second cover body are made of rubber material. After the puncture needle punctures the first cover body and the second cover body, the first cover body and the second cover body are punctured by the puncture needle so that the first cavity and the puncture needle are connected. At the same time, after the puncture needle is pulled out of the first cover body and the second cover body, the first cover body and the second cover body can restore their deformation, so that the first cover body restores the blocking of the telescopic tube, and the second cover body restores the blocking of the drainage tube body. In this way, after the joint and the drainage tube body are changed from the connected state to the disconnected state, it can further prevent the liquid from leaking from the end of the drainage tube body or the end of the joint;
[0025] 3. Further, when the puncture needle punctures the first cover and the second cover, the conical joint on the puncture needle contacts the second cover, and when the locking member is rotated relative to the drainage tube body, the outer sleeve can be moved relative to the drainage tube body along the length direction of the drainage tube body, so that the depth of the puncture needle puncturing the second cover can be adjusted, so as to facilitate the adjustment of the cross-sectional size of the channel for liquid circulation formed after the second cover is punctured, and further facilitate the control of the flow rate of the liquid when it flows at the second cover;
[0026] 4. Furthermore, by providing two first cavities, one of which is used for draining the fluid in the abdominal cavity, and the other first cavity is used for injecting flushing fluid into the patient's abdominal cavity, the convenience of flushing the abdominal cavity and draining the accumulated fluid in the abdominal cavity is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic structural diagram of one embodiment of a peritoneal drainage tube with a detachable connector according to the present application;
[0028] Figure 2 This is a schematic diagram of the partial structure of a drainage tube body and a connector when they are separated in one embodiment of a peritoneal drainage tube with a detachable connector of the present application;
[0029] Figure 3 This is a schematic diagram of the partial structure of a drainage tube body in one embodiment of a peritoneal drainage tube with a detachable connector according to the present application;
[0030] Figure 4 This is a schematic diagram of a partial structure of a connector in one embodiment of a peritoneal drainage tube with a detachable connector according to the present application;
[0031] In the figure, markings are as follows: 1-drainage tube body, 2-connector, 3-first cavity, 4-outer sleeve, 5-telescopic tube, 6-insertion needle, 7-locking piece, 8-first cover body, 9-second cover body, 10-main tube, 11-auxiliary tube, 12-spring, 13-abutment part, 14-second cavity, 15-connector body, 16-third cavity, 17-first extension tube, 18-second extension tube. DETAILED DESCRIPTION
[0032] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.
[0033] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0036] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0037] Embodiment 1: This embodiment provides a peritoneal drainage tube with a detachable connector 2, see Figure 1-Figure 4 As shown, it comprises a drainage tube body 1 and a joint 2, wherein a first cavity 3 is formed in the drainage tube body 1;
[0038] The connector 2 includes an outer sleeve 4, a telescopic tube 5, a puncture needle 6 and a locking piece 7, wherein the locking piece 7 is connected to the outer sleeve 4 and is used to be detachably connected to the drainage tube body 1. The telescopic tube 5 is provided with a first cover 8, and the first cover 8 is used to block the telescopic tube 5. The drainage tube body 1 is provided with a second cover 9, and the second cover 9 is used to block the drainage tube body 1.
[0039] When the drainage tube body 1 is separated from the locking member 7, the puncture needle 6 is located in the telescopic tube 5;
[0040] When the drainage tube body 1 cooperates with the locking piece 7, the telescopic tube 5 abuts against the drainage tube body 1 and shortens the telescopic tube 5, and the puncture needle 6 extends from the telescopic tube 5, and the puncture needle 6 sequentially pierces the first cover body 8 and the second cover body 9 and then extends into the first cavity 3, so that the first cavity 3 and the puncture needle 6 are connected.
[0041] In the present application, when the drainage tube body 1 and the locking piece 7 are in a separated state, the puncture needle 6 is located in the telescopic tube 5, the first cover body 8 blocks the telescopic tube 5, and the second cover body 9 blocks the drainage tube body 1. At this time, the drainage tube body 1 and the connector 2 are in a separated state, so that during the placement of the abdominal drainage tube after surgery, the drainage tube body 1 can be directly inserted into the patient's abdominal cavity through the puncture card. Since the drainage tube body 1 is not connected to the connector 2 at this time, the puncture card can pass through the drainage tube body 1 during the process of removing the puncture card from the patient's abdominal wall, thereby separating the puncture card from the drainage tube body 1, and then the drainage tube body 1 is matched with the locking piece 7. In order to connect the connector 2 with the drainage tube body 1, there is no need to place the abdominal drainage tube into the patient's abdominal cavity in advance, which reduces the difficulty of placing the abdominal drainage tube after surgery and is beneficial to improving the doctor's work efficiency. At the same time, when the drainage tube body 1 and the connector 2 are in a disconnected state, the first cover body 8 blocks the telescopic tube 5, and the second cover body 9 blocks the drainage tube body 1, thereby preventing liquid from seeping out from the end of the drainage tube body 1, and reducing the risk of contamination inside the connector 2. At this time, the puncture needle 6 is located in the telescopic tube 5, and the locking piece 7 cooperates with the telescopic tube 5 and the first cover body 8 to protect the puncture needle 6, which can prevent the puncture needle 6 from stabbing the patient or medical staff.
[0042] As a preferred embodiment, based on the above-mentioned manner, further, the locking member 7 is an annular structure, the locking member 7 is rotatably connected to the outer sleeve 4, and the locking member 7 is used to be threadedly connected to the outer wall of the drainage tube body 1.
[0043] Furthermore, the locking piece 7 is rotatably connected to the outer sleeve 4, and when the drainage tube body 1 cooperates with the locking piece 7, the locking piece 7 is threadedly connected to the outer wall of the drainage tube body 1, thereby improving the stability of the connection between the joint 2 and the drainage tube body 1.
[0044] As a preferred embodiment, on the basis of the above-mentioned manner, further, the first cover body 8 and the second cover body 9 are both made of rubber material, and after the puncture needle 6 pierces the first cover body 8 and the second cover body 9, the drainage tube body 1 and the puncture needle 6 are connected; after the puncture needle 6 is pulled out from the first cover body 8 and the second cover body 9, the first cover body 8 restores the blockage of the telescopic tube 5, and the second cover body 9 restores the blockage of the drainage tube body 1.
[0045] Furthermore, the first cover body 8 and the second cover body 9 are made of rubber material. After the puncture needle 6 punctures the first cover body 8 and the second cover body 9, the first cover body 8 and the second cover body 9 are punctured by the puncture needle 6 so that the first cavity 3 and the puncture needle 6 are connected. At the same time, after the puncture needle 6 is pulled out of the first cover body 8 and the second cover body 9, the first cover body 8 and the second cover body 9 can restore their deformation, so that the first cover body 8 restores the blockage of the telescopic tube 5, and the second cover body 9 restores the blockage of the drainage tube body 1. In this way, after the connector 2 and the drainage tube body 1 are changed from a connected state to a disconnected state, it can further prevent liquid from leaking from the end of the drainage tube body 1 or the end of the connector 2.
[0046] As a preferred embodiment, on the basis of the above-mentioned manner, further, the telescopic tube 5 includes a main tube 10, a sub-tube 11 and a spring 12, the spring 12 is elastic, the sub-tube 11 is sleeved with the main tube 10, one end of the spring 12 is against the main tube 10, and the other end is against the sub-tube 11, the telescopic tube 5 has an initial state, when the telescopic tube 5 is in the initial state, the spring 12 provides elastic force to make the puncture needle 6 located in the telescopic tube 5;
[0047] When the telescopic tube 5 is gradually shortened, the puncture needle 6 gradually extends out of the telescopic tube 5, and the deformation amount of the spring 12 gradually increases.
[0048] As a preferred embodiment, on the basis of the above-mentioned method, further, an abutment portion 13 is provided in the drainage tube body 1, and the auxiliary tube 11 is sleeved in the main tube 10. When the drainage tube body 1 is matched with the locking piece 7, the abutment portion 13 abuts against the auxiliary tube 11, and the inner wall of the first cavity 3 fits with the outer wall of the main tube 10.
[0049] Furthermore, by providing the main tube 10, the auxiliary tube 11 and the spring 12, when the drainage tube body 1 cooperates with the locking piece 7, the abutting portion 13 abuts against the auxiliary tube 11, the auxiliary tube 11 moves relative to the main tube 10, and the deformation of the spring 12 increases. At this time, the puncture needle 6 extends from the telescopic tube 5, and the puncture needle 6 punctures the first cover body 8 and the second cover body 9, so that the first cavity 3 and the puncture needle 6 are connected, and the inner wall of the first cavity 3 fits with the outer wall of the main tube 10, which can improve the tightness of the telescopic tube 5 and the inner wall of the first cavity 3.
[0050] Embodiment 2: Based on the technical solution of embodiment 1, further, see Figure 1-Figure 4 As shown, a second cavity 14 is provided in the puncture needle 6, and the puncture needle 6 is connected with the drainage tube body 1 through the second cavity 14. The end of the puncture needle 6 for puncturing the first cover body 8 is in a cone-shaped structure.
[0051] Furthermore, a second cavity 14 is provided in the puncture needle 6 so that the drainage tube body 1 is connected to the second cavity 14 after the puncture needle 6 punctures the first cover body 8 and the second cover body 9, which further facilitates the conduction between the drainage tube body 1 and the connector 2. At the same time, the end of the puncture needle 6 for puncturing the first cover body 8 is provided in a conical structure, which further facilitates the puncture needle 6 to puncture the first cover body 8 or the second cover body 9.
[0052] Furthermore, when the puncture needle 6 punctures the first cover body 8 and the second cover body 9, the conical joint 2 on the puncture needle 6 contacts the second cover body 9. When the locking piece 7 is rotated relative to the drainage tube body 1, the outer sleeve 4 can be moved relative to the drainage tube body 1 along the length direction of the drainage tube body 1, so that the depth of the puncture needle 6 into the second cover body 9 can be adjusted, thereby facilitating the adjustment of the cross-sectional size of the channel for liquid circulation formed after the second cover body 9 is punctured, and further facilitating the control of the flow rate of the liquid when it flows at the second cover body 9.
[0053] As a preferred embodiment, on the basis of the above-mentioned method, further, two first cavities 3 are formed in the drainage tube body 1, one of the first cavities 3 is used for drainage of intraperitoneal fluid, and the other first cavity 3 is used for injection of flushing fluid into the patient's abdominal cavity; a single first cavity 3 is adapted to a single telescopic tube 5 and a single insertion needle 6.
[0054] Furthermore, by providing two first cavities 3, one first cavity 3 is used for draining the fluid in the abdominal cavity, and the other first cavity 3 is used for injecting flushing fluid into the patient's abdominal cavity, thereby improving the convenience of flushing the abdominal cavity and draining the accumulated fluid in the abdominal cavity.
[0055] As a preferred embodiment, on the basis of the above-mentioned method, further, the connector 2 also includes a connector body 15, the outer sleeve 4, the telescopic tube 5 and the puncture needle 6 are all connected to the connector body 15, and when the drainage tube body 1 cooperates with the locking piece 7, the drainage tube body 1, the puncture needle 6 and the connector body 15 are connected.
[0056] Furthermore, by providing the connector body 15 , medical personnel can hold the connector body 15 to perform the connection or separation operation between the connector 2 and the drainage tube body 1 , thereby improving the convenience of connecting or separating the connector 2 and the drainage tube body 1 .
[0057] As a preferred embodiment, based on the above manner, further, a third cavity 16 is formed in the joint body 15 , a single third cavity 16 is connected to a single telescopic tube 5 , and the number of the third cavities 16 matches the number of the telescopic tubes 5 .
[0058] Furthermore, by providing the third lumen 16 in the connector body 15 , after the connector 2 is connected to the drainage tube body 1 , the first lumen 3 , the second lumen 14 and the third lumen 16 are connected.
[0059] As a preferred embodiment, on the basis of the above-mentioned method, further, a first extension tube 17 and a second extension tube 18 are provided on the connector body 15, wherein one third cavity 16 is connected to the first extension tube 17, and the other third cavity 16 is connected to the second extension tube 18, the first extension tube 17 is used to be connected to the flushing device, and the second extension tube 18 is used to be connected to the drainage bag device.
[0060] Furthermore, by providing the first extension tube 17 and the second extension tube 18, the first extension tube 17 is used to connect to the flushing device, and the second extension tube 18 is used to connect to the drainage bag device, thereby further improving the convenience of flushing or draining the abdominal cavity.
[0061] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.
Claims
1. A peritoneal drainage tube with a detachable connector, characterized in that: It comprises a drainage tube body and a joint, wherein a first cavity is formed in the drainage tube body; The joint includes an outer sleeve, a telescopic tube, a puncture needle and a locking piece, wherein the locking piece is connected to the outer sleeve and is used to be detachably connected to the drainage tube body. The telescopic tube is provided with a first cover body, which is used to block the telescopic tube. The drainage tube body is provided with a second cover body, which is used to block the drainage tube body. When the drainage tube body is separated from the locking piece, the puncture needle is located in the telescopic tube; When the drainage tube body cooperates with the locking piece, the telescopic tube abuts against the drainage tube body and shortens the telescopic tube, and the puncture needle extends out of the telescopic tube, punctures the first cover body and the second cover body in sequence, and then extends into the first cavity, so that the first cavity and the puncture needle are connected.
2. A peritoneal drainage tube with a detachable connector as claimed in claim 1, characterized in that: The locking piece is an annular structure, is rotatably connected to the outer sleeve, and is used for threaded connection with the outer wall of the drainage tube body.
3. A peritoneal drainage tube with a detachable connector as claimed in claim 1, characterized in that: The first cover body and the second cover body are both made of rubber material. After the puncture needle punctures the first cover body and the second cover body, the drainage tube body and the puncture needle are connected; after the puncture needle is pulled out of the first cover body and the second cover body, the first cover body resumes the blocking of the telescopic tube, and the second cover body resumes the blocking of the drainage tube body.
4. A peritoneal drainage tube with a detachable connector as claimed in claim 3, characterized in that: The telescopic tube includes a main tube, a secondary tube and a spring, the spring is elastic, the secondary tube is sleeved with the main tube, one end of the spring abuts against the main tube, and the other end abuts against the secondary tube, the telescopic tube has an initial state, when the telescopic tube is in the initial state, the spring provides elastic force to make the puncture needle located in the telescopic tube; When the telescopic tube is gradually shortened, the puncture needle gradually extends out of the telescopic tube, and the deformation amount of the spring gradually increases.
5. A peritoneal drainage tube with a detachable connector as claimed in claim 4, characterized in that: The drainage tube body is provided with an abutment portion, the auxiliary tube is sleeved in the main tube, and when the drainage tube body cooperates with the locking piece, the abutment portion abuts against the auxiliary tube, and the inner wall of the first cavity fits against the outer wall of the main tube.
6. A peritoneal drainage tube with a detachable connector as claimed in claim 5, characterized in that: A second cavity is arranged in the puncture needle, and the puncture needle is connected with the drainage tube body through the second cavity. The end of the puncture needle used for puncturing the first cover body is in a cone-shaped structure.
7. A peritoneal drainage tube with a detachable connector as claimed in claim 6, characterized in that: Two first cavities are formed in the drainage tube body, one of which is used for draining the fluid in the abdominal cavity, and the other is used for injecting flushing fluid into the patient's abdominal cavity; a single first cavity is adapted to a single telescopic tube and a single puncture needle.
8. A peritoneal drainage tube with a detachable connector according to any one of claims 1 to 7, characterized in that: The connector also includes a connector body, and the outer sleeve, telescopic tube and puncture needle are all connected to the connector body. When the drainage tube body cooperates with the locking piece, the drainage tube body, the puncture needle and the connector body are connected.
9. A peritoneal drainage tube with a detachable connector as claimed in claim 8, characterized in that: A third cavity is formed in the connector body, a single third cavity is communicated with a single telescopic tube, and the number of the third cavities matches the number of the telescopic tubes.
10. A peritoneal drainage tube with a detachable connector as claimed in claim 9, characterized in that: The connector body is provided with a first extension tube and a second extension tube, wherein one third cavity is connected to the first extension tube, and the other third cavity is connected to the second extension tube, the first extension tube is used to be connected to the flushing device, and the second extension tube is used to be connected to the drainage bag device.