Puncture device with drainage tube fixing function

Abstract

The invention provides a puncture device with a drainage tube fixing function, which comprises a central cylinder, a flow filling bag, a blocking ring, a cover body, a fixing structure and an encircling hole, wherein a central through hole is formed in the central cylinder and is used for puncturing and placing a drainage tube; an annular cavity is formed in the inner wall of the center cylinder and used for adjusting the supporting state of the center cylinder. A flow filling bag is arranged at the first end of the central cylinder, a blocking ring is arranged at the second end of the central cylinder, the flow filling bag is used for being arranged in the body of a patient, and the blocking ring is used for being arranged outside the body of the patient; a cover body is arranged at the end, away from the central cylinder body, of the blocking ring, a fixing structure is arranged on the cover body, the fixing structure is used for fixing the drainage tube, an encircling hole is formed in the fixing structure, and the encircling hole is used for adjusting the fixing tightness degree of the drainage tube. The puncture device can be used for puncturing, and meanwhile, the drainage tube is convenient to place, so that the drainage tube is fixed more stably.

Description

Technical Field

[0001] The present application relates to the technical field of medical auxiliary equipment design, and more specifically to a puncture device with a drainage tube fixing function. Background Art

[0002] Trocar (i.e. trocar) is a medical auxiliary device used in laparoscopic surgery to provide a channel for endoscopic instruments to enter the body cavity, facilitating surgery. With the development of laparoscopic technology, trocars are widely used in clinical minimally invasive surgery. The drainage tube is used to guide purulent secretions, blood, exudate, etc. accumulated between human tissues or in the body cavity to the outside of the body, reduce local pressure, and promote tissue healing; another purpose is to detect postoperative bleeding and anastomotic leakage early, so as to facilitate early identification and measures. Therefore, it is widely used in thoracic, gastrointestinal and gynecological surgeries, etc., and is considered to be an effective method to prevent postoperative complications.

[0003] Currently, in clinical practice, a puncture card is used to puncture into a cavity in the human body, such as the abdominal cavity or pelvic cavity, before surgery. At the end of the operation, the puncture card is removed, and the drainage tube is then inserted through the hole in the puncture card. Traditional drainage tubes are generally made of materials such as silicone rubber or polyurethane. After trimming several side holes, they are inserted into the drainage site in the patient's body. The other end can be connected to other extracorporeal devices such as drainage tubes outside the body. The drainage is drained to the outside of the body through the action of body pressure, gravity, or negative pressure suction. At the same time, sutures are needed to be sutured to the skin and then wrapped around the drainage tube for knotting and fixing.

[0004] In actual clinical practice, there are the following disadvantages: traction pain and risk of tube dislocation: after surgery, when the fixed sutures pull the skin due to getting out of bed, it causes pain, and in severe cases, it may even cause the drainage tube to dislocate; the operation steps are relatively cumbersome: after the poking card is inserted before the operation, it needs to be pulled out at the end of the operation, and then the drainage tube is inserted, and then sutured and knotted to fix it. Summary of the invention

[0005] The present application is proposed to solve the above problems. According to one aspect of the present application, a puncture device with a drainage tube fixing function is provided, which is characterized by comprising a central cylinder, a filling bag, a blocking ring, a cover body, a fixing structure and an embracing hole:

[0006] A central through hole is provided inside the central cylinder, and the central through hole is used for puncture and placement of a drainage tube;

[0007] The inner wall of the central cylinder is provided with an annular cavity, and the annular cavity is used to adjust the supporting state of the central cylinder;

[0008] A fluid-filled bag is disposed at the first end of the central cylinder, and a blocking ring is disposed at the second end of the central cylinder. The fluid-filled bag is used to be placed inside the patient's body, and the blocking ring is used to be placed outside the patient's body.

[0009] A cover body is provided at one end of the blocking ring away from the central cylinder, and a fixing structure is provided on the cover body. The fixing structure is used to fix the drainage tube, and an embracing hole is provided on the fixing structure. The embracing hole is used to adjust the fixing tightness of the drainage tube.

[0010] In one embodiment of the present application, the annular cavity includes a first filling connector, and the first filling connector is used to fill the annular cavity:

[0011] When the annular cavity is in a filled state, the supporting state of the central cylinder is a puncture supporting state, and the central through hole of the central cylinder is used for puncture;

[0012] When the annular cavity is in a non-flowing state, the supporting state of the central cylinder is a drainage tube embracing state, and the central through hole of the central cylinder is used for placing the drainage tube.

[0013] In one embodiment of the present application, the annular cavity includes a hard annular ring, and the hard annular ring is used to support the annular cavity:

[0014] When the hard annular ring is placed in the annular cavity, the supporting state of the central cylinder is a puncture supporting state, and the central through hole of the central cylinder is used for puncture;

[0015] When the hard annular ring is not placed in the annular cavity, the supporting state of the central cylinder is a state of embracing the drainage tube, and the central through hole of the central cylinder is used for placing the drainage tube.

[0016] In one embodiment of the present application, the fixing structure is a hoop structure:

[0017] The hoop structure comprises a fixed arc plate and a movable arc plate, and the fixed arc plate and the movable arc plate are connected to the cover body;

[0018] The fixed arc plate is provided with an arc groove extending along the circumferential direction;

[0019] The movable arc plate is inserted into the arc groove, and a concave-convex buckle connection is formed between the movable arc plate and the arc groove;

[0020] The movable arc plate moves in the arc groove to change the aperture size of the surrounding hole.

[0021] In one embodiment of the present application, the fixed structure is a variable diameter embracing structure:

[0022] The variable diameter embracing structure comprises a driving disc, a driving arm, and an embracing sheet, a plurality of driving arms are arranged inside the driving disc, and the driving disc is connected to a plurality of embracing sheets;

[0023] The driving arm includes a slide groove, and the embracing piece includes a sliding connecting pin, and the sliding connecting pin is connected to the slide groove;

[0024] The driving disk rotates along the circumference of the embracing hole, and the embracing sheet slides along the radial direction of the embracing hole to change the aperture size of the embracing hole.

[0025] In one embodiment of the present application, a second charging connector is provided on the cover;

[0026] A flow-filling channel is provided on the inner wall of the central cylinder;

[0027] The first end of the filling channel is connected to the filling bag, and the second end of the filling bag is connected to the second filling connector.

[0028] In one embodiment of the present application, a medicine storage cavity is provided in the cover body, and the medicine storage cavity is used to store liquid medicine; a medicine delivery tube is provided on the medicine storage cavity, and the medicine delivery tube is used to deliver liquid medicine to the medicine storage cavity;

[0029] A drug administration channel is arranged on the inner wall of the central cylinder, a drug administration micropore is arranged on the outer wall of the central cylinder, a connecting port is arranged on a side of the drug storage cavity close to the filling bag, the drug storage cavity is connected to the drug administration channel through the connecting port, and the drug administration channel is used to transport the drug solution in the drug storage cavity to the drug administration micropore.

[0030] In one embodiment of the present application, the drug administration channel is provided with a guide groove corresponding to the drug administration micropore, and the guide groove is used to transport the drug solution in the drug administration channel to the drug administration micropore;

[0031] There are multiple drug delivery channels, and the drug delivery channels are arranged at intervals around the circumference of the central cylinder;

[0032] The number of the drug administration micro-holes is multiple, and the drug administration micro-holes are arranged at intervals in the circumferential direction around the central cylinder.

[0033] In one embodiment of the present application, an elastic sealing sheet is provided at one end of the central through hole close to the cover body, and a cross gap is formed in the central area of ​​the elastic sealing sheet;

[0034] And / or, the cover body has a cover body through hole corresponding to the position of the central through hole, and an elastic sealing ring is provided on the inner side of the cover body through hole, and the aperture of the elastic sealing ring is smaller than the outer tube diameter of the drainage tube.

[0035] In one embodiment of the present application, the length of the central cylinder is adjustable.

[0036] The puncture device with drainage tube fixing function of the present application is used for puncture and placement of drainage tube by setting a central cylinder, including a filling bag that can be placed on the inner side of the patient's body and a blocking ring placed on the outer side of the patient's body. When in use, the filling bag and the blocking ring can form a clamp on the patient's body wall, and the drainage tube is tightly fixed by the fixing structure. The embracing hole in the fixing structure can adjust the tightness of the drainage tube, making the fixation of the drainage tube more stable, and can reduce the probability of patient pain or even drainage tube falling off caused by displacement of the drainage tube due to external force, thereby reducing the number of postoperative operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0038] Figure 1 A schematic structural diagram of a puncture device with a drainage tube fixing function according to an embodiment of the present application is shown;

[0039] Figure 2 A schematic structural cross-sectional view of a puncture device with a drainage tube fixing function according to an embodiment of the present application is shown;

[0040] Figure 3 A schematic structural cross-sectional view of a puncture device with a drainage tube fixing function according to an embodiment of the present application is shown;

[0041] Figure 4 A schematic structural diagram showing a variable diameter embracing structure of a puncture device with a drainage tube fixing function according to an embodiment of the present application;

[0042] Figure 5 A schematic structural cross-sectional view of a puncture device with a drainage tube fixing function according to another embodiment of the present application is shown.

[0043] Reference numerals:

[0044] 1 central cylinder; 2 cover body; 3 filling bag; 4 fixed structure; 5 blocking ring; 6 surrounding hole;

[0045] 11 central through hole; 12 drug delivery channel; 121 guide groove; 13 charging channel; 14 elastic sealing sheet; 15 drug delivery microhole; 16 annular cavity; 161 first charging joint; 162 hard annular ring; 17 CO2 injection tube;

[0046] 21 medicine storage cavity; 211 medicine delivery tube; 22 second filling connector; 23 elastic sealing ring;

[0047] 41 variable diameter encircling structure; 411 driving plate; 412 encircling sheet; 412a sliding connecting pin; 413 driving arm; 413a sliding groove DETAILED DESCRIPTION

[0048] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0049] It should be understood that the present application can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present application to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0050] Spatially relative terms such as "under," "below," "below," "under," "above," "above," etc., may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, the spatially relative terms are intended to include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0051] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "a", "an", and "said / the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0052] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by ordinary technicians in the field of this application. It will also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with their meaning in the context of the relevant art and / or this specification, and should not be interpreted in an ideal or overly formal sense unless expressly defined as such herein.

[0053] In order to make the purpose, technical solutions and advantages of the present application more obvious, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments of the present application described in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0054] Therefore, in view of the existence of the above-mentioned technical problems, the present invention proposes a puncture device with a drainage tube fixing function, referring to Figure 1-5 The puncture device with drainage tube fixing function used to implement the embodiment of the present invention is described below. Figure 1 As shown, the puncture device with the drainage tube fixing function includes a central cylinder 1, a filling bag 3, a blocking ring 5, a cover body 2, a fixing structure 4 and an embracing hole 6.

[0055] A central through hole 11 is provided inside the central cylinder 1, and the central through hole 11 is used for puncture and placement of a drainage tube. An annular cavity 16 is provided on the inner wall of the central cylinder 1, and the annular cavity 16 is used to adjust the support state of the central cylinder 1. The annular cavity 16 and the central through hole 11 are coaxially arranged with the central cylinder 1. The annular cavity 16 can adjust the support state of the central cylinder 1, including a puncture support state and a drainage tube embracing state. In the puncture support state, the central through hole 11 is used for puncture, and in the drainage tube embracing state, the central through hole 11 is used to place a drainage tube.

[0056] like Figure 2As shown, a filling sac 3 is provided at the first end of the central cylinder 1, and a blocking ring 5 is provided at the second end of the central cylinder 1. The filling sac 3 is used to be placed in the patient's body, and the blocking ring 5 is used to be placed outside the patient's body. The fluid filled in the filling sac 3 can be a liquid (such as water) or a gas (such as air). The filling sac 3 and the blocking ring 5 are arranged at intervals along the axial direction of the central cylinder 1. The filling sac 3 can switch between a filling state and a discharge state. When the filling sac 3 is in the discharge state, it has a small volume to ensure that the end of the device is easily placed in the patient's body (such as an incision on the abdominal wall or pelvic wall). When the filling sac 3 is in the filling state, the filling sac 3 is in an expanded state under the filling effect of the fluid, and has a high rigidity. The filling sac 3 and the blocking ring 5 can form a clamp on the patient's body wall (such as the aforementioned abdominal wall or pelvic wall). The end of the blocking ring 5 away from the central cylinder 1 is provided with a cover 2, and a fixing structure 4 is provided on the cover 2. The fixing structure 4 is used to fix the drainage tube, and the fixing structure 4 is provided with an embracing hole 6, and the embracing hole 6 is used to adjust the fixing tightness of the drainage tube. The drainage tube (not shown in the figure) passes through the embracing hole 6 and is fixed in the embracing hole 6, that is, one end of the drainage tube is in the patient's body, and the other end can be connected with the corresponding drainage component (such as a negative pressure pump). The filling bag 3, the central cylinder 1, the embracing hole 6 and the blocking ring 5 are coaxially arranged.

[0057] The puncture device with a drainage tube fixing function according to an embodiment of the present invention is provided with a central cylinder 1 for puncturing and placing a drainage tube, including a filling bag 3 that can be placed on the inner side of the patient's body and a blocking ring 5 placed on the outer side of the patient's body. When in use, the filling bag 3 and the blocking ring 5 can form a clamp on the patient's body wall, and the drainage tube is tightly fixed by the fixing structure 4. The embracing hole 6 in the fixing structure 4 can adjust the tightness of the fixing of the drainage tube, making the fixing of the drainage tube more stable, and can reduce the probability of pain for the patient or even the occurrence of the drainage tube falling off caused by the displacement of the drainage tube due to external force, thereby reducing the number of postoperative operation steps.

[0058] like Figure 1 As shown, in an embodiment of the present application, the annular cavity 16 includes a first filling connector 161, which is used to fill the annular cavity 16: when the annular cavity 16 is in a filling state, the supporting state of the central cylinder 1 is a puncture supporting state, and the central through hole 11 of the central cylinder 1 is used for puncture; when the annular cavity 16 is in an unfilled state, the supporting state of the central cylinder 1 is a drainage tube embracing state, and the central through hole 11 of the central cylinder 1 is used to place the drainage tube.

[0059] The first flow-filling connector 161 is used to control the on-off of the fluid. Specifically, the first flow-filling connector 161 can be a connector with a one-way valve installed therein, which can be controlled to allow the annular cavity 16 to be filled with fluid, and can also be controlled to allow the fluid in the annular cavity 16 to be discharged. For example, under normal conditions, the mouth of the connector is unidirectionally blocked under the action of the fluid pressure in the annular cavity 16. When it is necessary to discharge the fluid from the annular cavity 16, the corresponding push rod can be used to reversely apply force to the valve core of the one-way valve, so that a corresponding outflow channel is formed between the valve core and the valve seat. The first flow-filling connector 161 is placed outside the patient's body, and the fluid filled through the first flow-filling connector 161 can be a liquid (such as water) or a gas (such as air).

[0060] Specifically, when the central cylinder 1 is in the puncture support state, the overall rigidity of the central cylinder 1 is relatively high, and the central cylinder 1 resists the pressure of the patient's incision to ensure that the central through hole 11 is a relatively regular circular channel. At this time, it is convenient for medical staff to operate the corresponding position in the patient's body through the central through hole 11, that is, the entire device plays the function of its puncture device. When the central cylinder is in the drainage tube embrace state, the overall rigidity of the central cylinder 1 is relatively low. Under the pressure of the patient's incision, the central through hole 11 is pressed inwardly, so that the drainage tube passing through the central through hole 11 is bound by the inner wall of the central cylinder 1, thereby ensuring the position reliability of the drainage tube and further preventing the displacement of the drainage tube under the action of external force. It can be understood that after the operation is completed, the drainage tube should be placed in the patient's body through the central through hole 11 before the central cylinder 1 switches from the puncture support state to the drainage tube embrace state, and then the central cylinder 1 is switched to the drainage tube embrace state. The state switching of the central cylinder 1 , that is, the change in stiffness, is adjusted by filling the annular cavity 16 with fluid or releasing the fluid from the annular cavity 16 , which makes the operation simpler and more convenient.

[0061] like Figure 5 As shown, in an embodiment of the present application, the annular cavity 16 includes a hard annular ring 162, and the hard annular ring 162 is used to support the annular cavity 16: when the hard annular ring 162 is placed in the annular cavity 16, the support state of the central cylinder 1 is a puncture support state, and the central through hole 11 of the central cylinder 1 is used for puncture; when the hard annular ring 162 is not placed in the annular cavity 16, the support state of the central cylinder 1 is a drainage tube embracing state, and the central through hole 11 of the central cylinder 1 is used to place the drainage tube.

[0062] The hard annular ring 162 can be made of hard plastics such as PVC and PC, which is low in cost and can resist the contraction pressure of the incision. The hard annular ring 162 can be taken out from the annular cavity 16. During the operation, the rigidity of the central cylinder 1 is improved by inserting the hard annular ring 162 in the annular cavity 16 to meet the formation requirements of the central through hole 11 during the operation. After the operation, the hard annular ring 162 is pulled out of the annular cavity 16. At this time, the rigidity of the central cylinder 1 is reduced due to the lack of the support of the hard material. The central cylinder 1 made of soft material will shrink and deform inward under the contraction pressure of the patient's incision, thereby achieving the restraint and positioning of the drainage tube. In this way, the rigidity switching of the central cylinder 1 is achieved by plugging and unplugging the hard annular ring 162 in the annular cavity 16, which is simple and convenient to operate. The cover body 2 and the blocking ring 5 are detachably connected, and the detachable connection can be a screw-on snap connection or a threaded connection. For the central cylinder 1 made of soft material, the snap connection is more suitable. The notch of the annular cavity 16 is located on the outer end surface of the blocking ring 5 (that is, facing the outside of the patient's body). That is, when the hard support ring needs to be loaded and unloaded, it is only necessary to remove the cover body 2 from the end of the blocking ring 5, and the operation is very simple.

[0063] In one embodiment, the central cylinder 1 is made of a soft material (such as silicone), and has a puncture supporting state and a drainage tube embracing state. The central cylinder 1 can be controlled to switch between the puncture supporting state and the drainage tube embracing state.

[0064] It is understandable that after the operation is completed, the drainage tube should be placed into the patient's body through the central through hole 11 before the central cylinder 1 switches from the puncture support state to the drainage tube embracing state, and then the central cylinder 1 switches to the drainage tube embracing state. The central cylinder 1 has the ability to switch states, and after the operation, there is no need to remove the puncture device from the incision and then arrange the drainage tube and perform corresponding suturing, winding and other fixing operations on the drainage tube as in the prior art, which simplifies the operation steps and improves the patient's medical comfort and satisfaction.

[0065] In the embodiment of the present application, the fixed structure 4 is a hoop structure. The hoop structure includes a fixed arc plate and a movable arc plate, and the fixed arc plate and the movable arc plate are connected to the cover body 2. The fixed arc plate is fixedly connected to the cover body 2, and the movable arc plate is slidably connected to the cover body 2. An arc groove extending along the circumferential direction is provided in the fixed arc plate. The movable arc plate is inserted into the arc groove, and a concave-convex buckle is formed between the movable arc plate and the arc groove. Corresponding tooth grooves are provided on the inner wall of the arc groove, and a plurality of latch teeth are provided on the side of the movable arc plate facing the tooth groove, and the aforementioned concave-convex buckle is realized by the engagement between the protruding latch teeth and the concave tooth grooves. The movable arc plate moves in the arc groove to change the aperture size of the embracing hole 6. The longer the length of the movable arc plate slidingly inserted in the arc groove, the smaller the aperture of the embracing hole 6 formed, and vice versa, the larger the aperture, so that the drainage tube passing through the embracing hole 6 is embraced and tightened by controlling the circumferential sliding distance of the movable arc plate, thereby improving the efficient fixation of the drainage tube.

[0066] like Figure 4 As shown, in an embodiment of the present application, the fixed structure 4 is a variable diameter embracing structure 41: the variable diameter embracing structure 41 includes a driving disk 411, a driving arm 413, and an embracing sheet 412, a plurality of driving arms 413 are arranged on the inner side of the driving disk 411, and the driving disk 411 is connected to the plurality of embracing sheets 412; the driving arm 413 includes a slide groove 413a, and the embracing sheet 412 includes a sliding connecting pin 412a, and the sliding connecting pin 412a is connected to the slide groove 413a; the driving disk 411 rotates along the circumferential direction of the embracing hole 6, and the embracing sheet 412 slides along the radial direction of the embracing hole 6 to change the aperture size of the embracing hole 6. The sliding connection pins 412a of each embracing piece 412 are respectively slidably connected in each slide groove 413a. When the driving disk 411 is driven to rotate along the circumference of the embracing hole 6, each embracing piece 412 slides radially inward or outward along the embracing hole 6 to adjust the aperture of the embracing hole 6. The outer circumferential wall of the driving disk 411 is constructed with a texture pattern to increase the friction between the user and the driving disk 411 and ensure the smooth change of diameter. It can be understood that a corresponding limiting structure (such as a limiting pin) is also formed on the driving disk 411 to lock the position of the driving disk 411 after the aperture size is adjusted to the right position.

[0067] like Figure 5As shown, in the embodiment of the present application, a second filling joint 22 is provided on the cover body 2; a filling channel 13 is provided on the inner wall of the central cylinder 1; the first end of the filling channel 13 is connected to the filling capsule 3, and the second end of the filling capsule 3 is connected to the second filling joint 22. The second filling joint 22 is used to control the on-off of the fluid. The second filling joint 22 can be a joint with a one-way valve inside, which can be controlled to allow the filling of fluid into the filling capsule 3, and can also be controlled to allow the fluid in the filling capsule 3 to be discharged. For example, under normal conditions, it unidirectionally blocks the mouth of the joint under the action of the fluid pressure in the filling capsule 3, and when it is necessary to discharge the fluid from the filling capsule 3, the corresponding push rod can be used to reversely apply force to the valve core of the one-way valve, so that a corresponding outflow channel is formed between the valve core and the valve seat. The filling channel 13 is formed in the wall of the central cylinder 1, and there is no need to connect the corresponding pipeline separately to the outside, which simplifies the device structure.

[0068] like Figure 1 As shown, in the embodiment of the present application, a medicine storage cavity 21 is provided in the cover body 2, and the medicine storage cavity 21 is used to store liquid medicine. A medicine delivery tube 211 is provided on the medicine storage cavity 21, and the medicine delivery tube 211 is used to deliver liquid medicine to the medicine storage cavity 21. The medicine delivery tube 211 can be provided with a one-way valve, which can be controlled to allow liquid medicine to be input into the medicine storage cavity 21, and can also be controlled to allow the liquid medicine in the medicine storage cavity 21 to be discharged.

[0069] The inner wall of the central cylinder 1 is provided with a drug administration channel 12, the outer wall of the central cylinder 1 is provided with a drug administration micropore 15, and a connection port is provided on one side of the drug storage cavity 21 close to the filling bag 3. The drug storage cavity 21 is connected to the drug administration channel 12 through the connection port, and the drug administration channel 12 is used to transport the liquid medicine in the drug storage cavity 21 to the drug administration micropore 15. The drug administration micropore 15 can be a through-hole structure independently constructed on the outer circumferential wall of the central cylinder 1, and the pore size of the drug administration micropore 15 can be reasonably designed according to the actual drug administration demand. By constructing the drug storage cavity 21 in the cover body 2, by filling the analgesic liquid into the drug storage cavity 21, and then transporting the analgesic liquid to the incision position through the drug administration micropores 15 of the drug administration channel 12, the analgesic effect at the incision position is achieved, and the user's comfort is improved.

[0070] In one embodiment, with the orientation of the central axis of the central cylinder 1 in the vertical state as a reference, the bottom wall of the medicine storage chamber 21 is a conical surface that is high on the outside and low on the inside, and the connection port between the medication channel 12 and the medicine storage chamber 21 is located radially inside the conical surface to ensure that the medicine liquid in the medicine storage chamber 21 can fully flow to each medication micropore 15 under the action of its own weight when the patient is lying flat or half lying down, thereby reducing the residual medicine liquid.

[0071] like Figure 3As shown, in an embodiment of the present application, a guide groove 121 is provided on the drug administration channel 12, which is arranged corresponding to the drug administration micropore 15, and the guide groove 121 is used to transport the drug solution in the drug administration channel 12 to the drug administration micropore 15; there are multiple drug administration channels 12, and the drug administration channels 12 are arranged at circumferential intervals around the central cylinder 1; there are multiple drug administration micropores 15, and the drug administration micropores 15 are arranged at circumferential intervals around the central cylinder 1. It can ensure uniform medication of the patient's wall incision and improve the analgesic effect. In one embodiment, the outer cavity wall of the drug storage cavity 21 is made of transparent material, such as transparent silicone, so that medical staff can observe the amount of medicine in the drug storage cavity 21 and perform corresponding subsequent treatment.

[0072] like Figure 5 As shown, in the embodiment of the present application, an elastic sealing sheet 14 is provided at one end of the central through hole 11 close to the cover body 2, and a cross gap is formed in the central area of ​​the elastic sealing sheet 14. The cover body 2 has a through hole of the cover body 2 corresponding to the position of the central through hole 11, and an elastic sealing ring 23 is provided on the inner side of the through hole of the cover body 2, and the aperture of the elastic sealing ring 23 is smaller than the outer diameter of the drainage tube. In this way, the elastic sealing ring 23 can be used to further embrace and fix the drainage tube, further improving the fixing effect of the drainage tube.

[0073] In one embodiment, a CO2 injection tube 17 is further provided at the outer end of the central cylinder 1 to inject gas into the patient's body so that the corresponding chamber is inflated to form an operating space. A cross gap is formed in the central area of ​​the elastic sealing sheet 14 to allow external medical equipment such as a laparoscope to enter the patient's body through the cross gap while minimizing the leakage of CO2 to the outside of the body.

[0074] In the embodiment of the present application, the length of the central cylinder 1 is adjustable. The central cylinder 1 can be made of a corrugated tube, so that the length of the central cylinder 1 can be adjusted according to different patients, broadening the applicable range of patients and ensuring reliable clamping and fixing of the fixing device to the patient wall.

[0075] In one embodiment, a skin protection film, such as an EVA film or a non-woven fabric lining, is provided on the end surface of the blocking ring 5 facing the filling bag 3 to prevent the blocking ring 5 from causing damage and pressure to the patient's skin, thereby improving the patient's comfort; or, an adhesive film is provided on the end surface of the blocking ring 5 facing the filling bag 3. The adhesive film can be made of adhesive tape, for example, which fits the patient's skin through the adhesive tape to improve the fixing effect of the fixing device.

[0076] In one embodiment, the cover body 2 and the fixing structure 4 are made of hard material or soft material, and the central cylinder 1 and the filling bag 3 are made of soft material; the soft material is silicone or latex, and the hard material is PC plastic or PVC plastic.

[0077] Therefore, according to the embodiment of the present application, the puncture device with the drainage tube fixing function is used for puncture and placement of the drainage tube by setting a central cylinder, including a filling bag that can be placed on the inside of the patient's body and a blocking ring placed on the outside of the patient's body. When in use, the filling bag and the blocking ring can form a clamp on the patient's body wall, and the drainage tube is tightly fixed by the fixed structure. The annular hole in the fixed structure can adjust the tightness of the fixation of the drainage tube, making the fixation of the drainage tube more stable, and can reduce the probability of patient pain or even drainage tube falling off caused by the displacement of the drainage tube due to external force, thereby reducing the number of postoperative operation steps.

[0078] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0079] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0080] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0081] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various application aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, the application point is that the corresponding technical problem can be solved with less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0082] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0083] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0084] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" before an element does not exclude the presence of multiple such elements. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

[0085] The above is only a specific implementation or description of a specific implementation of the present application, and the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A puncture device with drainage tube fixing function, characterized in that: It includes a central cylinder, a filling bag, a blocking ring, a cover, a fixing structure and an encircling hole: A central through hole is provided inside the central cylinder, and the central through hole is used for puncture and placement of a drainage tube; The inner wall of the central cylinder is provided with an annular cavity, and the annular cavity is used to adjust the supporting state of the central cylinder; A fluid-filled bag is disposed at the first end of the central cylinder, and a blocking ring is disposed at the second end of the central cylinder. The fluid-filled bag is used to be placed inside the patient's body, and the blocking ring is used to be placed outside the patient's body. A cover body is provided at one end of the blocking ring away from the central cylinder, and a fixing structure is provided on the cover body. The fixing structure is used to fix the drainage tube, and an embracing hole is provided on the fixing structure. The embracing hole is used to adjust the fixing tightness of the drainage tube.

2. The puncture device with drainage tube fixing function according to claim 1, characterized in that: The annular cavity comprises a first filling connector, and the first filling connector is used to fill the annular cavity: When the annular cavity is in a filled state, the supporting state of the central cylinder is a puncture supporting state, and the central through hole of the central cylinder is used for puncture; When the annular cavity is in a non-flowing state, the supporting state of the central cylinder is a drainage tube embracing state, and the central through hole of the central cylinder is used for placing the drainage tube.

3. The puncture device with drainage tube fixing function according to claim 1, characterized in that: The annular cavity includes a hard annular ring, and the hard annular ring is used to support the annular cavity: When the hard annular ring is placed in the annular cavity, the supporting state of the central cylinder is a puncture supporting state, and the central through hole of the central cylinder is used for puncture; When the hard annular ring is not placed in the annular cavity, the supporting state of the central cylinder is a state of embracing the drainage tube, and the central through hole of the central cylinder is used for placing the drainage tube.

4. The puncture device with drainage tube fixing function according to claim 1, characterized in that: The fixing structure is a hoop structure: The hoop structure comprises a fixed arc plate and a movable arc plate, and the fixed arc plate and the movable arc plate are connected to the cover body; The fixed arc plate is provided with an arc groove extending along the circumferential direction; The movable arc plate is inserted into the arc groove, and a concave-convex buckle connection is formed between the movable arc plate and the arc groove; The movable arc plate moves in the arc groove to change the aperture size of the surrounding hole.

5. The puncture device with drainage tube fixing function according to claim 1, characterized in that: The fixed structure is a variable diameter embracing structure: The variable diameter embracing structure comprises a driving disc, a driving arm, and an embracing sheet, a plurality of driving arms are arranged inside the driving disc, and the driving disc is connected to a plurality of embracing sheets; The driving arm includes a slide groove, and the embracing piece includes a sliding connecting pin, and the sliding connecting pin is connected to the slide groove; The driving disk rotates along the circumference of the embracing hole, and the embracing sheet slides along the radial direction of the embracing hole to change the aperture size of the embracing hole.

6. The puncture device with drainage tube fixing function according to claim 1, characterized in that: The cover body is provided with a second charging connector; A flow-filling channel is provided on the inner wall of the central cylinder; The first end of the filling channel is connected to the filling bag, and the second end of the filling bag is connected to the second filling connector.

7. The puncture device with drainage tube fixing function according to claim 1, characterized in that: The cover body is provided with a medicine storage cavity, which is used to store liquid medicine; the medicine storage cavity is provided with a medicine delivery tube, which is used to deliver liquid medicine to the medicine storage cavity; A drug administration channel is arranged on the inner wall of the central cylinder, a drug administration micropore is arranged on the outer wall of the central cylinder, a connecting port is arranged on a side of the drug storage cavity close to the filling bag, the drug storage cavity is connected to the drug administration channel through the connecting port, and the drug administration channel is used to transport the drug solution in the drug storage cavity to the drug administration micropore.

8. The puncture device with drainage tube fixing function according to claim 7, characterized in that: The drug delivery channel is provided with a guide groove corresponding to the drug delivery micropore, and the guide groove is used to transport the drug solution in the drug delivery channel to the drug delivery micropore; There are multiple drug delivery channels, and the drug delivery channels are arranged at intervals around the circumference of the central cylinder; The number of the drug administration micro-holes is multiple, and the drug administration micro-holes are arranged at intervals in the circumferential direction around the central cylinder.

9. The puncture device with drainage tube fixing function according to claim 1, characterized in that: An elastic sealing sheet is provided at one end of the central through hole close to the cover body, and a cross gap is formed in the central area of ​​the elastic sealing sheet; And / or, the cover body has a cover body through hole corresponding to the position of the central through hole, and an elastic sealing ring is provided on the inner side of the cover body through hole, and the aperture of the elastic sealing ring is smaller than the outer tube diameter of the drainage tube.

10. The puncture device with drainage tube fixing function according to claim 1, characterized in that: The length of the central cylinder is adjustable.

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