Puncture device with drainage tube fixing function

Abstract

The application provides a puncture device with a drainage tube fixing function, which comprises a central cylinder, a flow filling bag, a blocking ring, a cover, a fixing structure and a surrounding hole; a central through hole is arranged in the central cylinder, and the central through hole is used for puncture and drainage tube placement; an annular cavity is arranged on the inner wall of the central cylinder, and the annular cavity is used for adjusting the support state of the central cylinder; the first end of the central cylinder is provided with the flow filling bag, and the second end of the central cylinder is provided with the blocking ring; the flow filling bag is used for being placed in the patient's body, and the blocking ring is used for being placed outside the patient's body; the end of the blocking ring away from the central cylinder is provided with the cover, the fixing structure is arranged on the cover, the fixing structure is used for fixing the drainage tube, the surrounding hole is arranged on the fixing structure, and the surrounding hole is used for adjusting the fixing tightness of the drainage tube. The puncture device can be punctured, and the drainage tube is convenient to place, so that the fixation of the drainage tube is more stable.

Description

Technical Field

[0001] This application relates to the field of medical assistive device design technology, and more specifically to a puncture device with drainage tube fixation function. Background Technology

[0002] A trocar (or trocar) is a medical aid used in laparoscopic surgery to provide a channel for endoscopic instruments to enter the body's cavities, facilitating the procedure. With the development of laparoscopic technology, trocars are widely used in minimally invasive clinical surgery. A drainage tube, on the other hand, guides purulent secretions, blood, exudate, etc., accumulated between body tissues or in body cavities to the outside, reducing local pressure and promoting tissue healing. Another purpose is to detect postoperative bleeding and anastomotic leakage early, allowing for early identification and intervention. Therefore, it is widely used in thoracic, gastrointestinal, and gynecological surgeries and is considered an effective method for preventing postoperative complications.

[0003] Currently in clinical practice, a puncture card is used to insert into the body's cavities, such as the abdominal or pelvic cavities, before surgery. At the end of the surgery, the puncture card is removed, and a drainage tube is then inserted through the puncture card's opening. Traditional drainage tubes are generally made of materials such as silicone rubber or polyurethane. After being trimmed with several side holes, they are inserted into the drainage site inside the patient's body. The other end is external and can be connected to other external devices such as a drainage tube. Drainage is directed to the outside through pressure from the body, gravity, or negative pressure suction. At the same time, sutures are used to suture the tube to the skin and then tied to secure it.

[0004] In actual clinical practice, the following disadvantages exist: traction pain and risk of tube dislodgement: pain is caused by the sutures pulling the skin when getting out of bed after surgery, and in severe cases, the drainage tube may even dislodge; the operation steps are relatively complicated: after the puncture is inserted before surgery, it needs to be removed after the operation, and then the drainage tube needs to be inserted again, and then sutured and knotted to fix it. Utility Model Content

[0005] This application is made to address the aforementioned problems. According to one aspect of this application, a puncture device with drainage tube fixation function is provided, characterized in that it includes a central cylinder, a filling bladder, a blocking ring, a cap, a fixing structure, and a circumferential hole.

[0006] The central cylinder has a central through hole inside, which is used for puncture and placement of a drainage tube.

[0007] The inner wall of the central cylinder is provided with an annular cavity, which is used to adjust the support state of the central cylinder.

[0008] The first end of the central cylinder is provided with an inflatable bladder, and the second end of the central cylinder is provided with a blocking ring. The inflatable bladder 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] The end of the blocking ring away from the central cylinder is provided with a cover, and the cover is provided with a fixing structure for fixing the drainage tube. The fixing structure is provided with a circumferential hole for adjusting the tightness of the fixing of the drainage tube.

[0010] In one embodiment of this application, the annular cavity includes a first charging connector for charging the annular cavity:

[0011] When the annular cavity is in a flow-filled state, the central cylinder is in a puncture support state, and the central through hole of the central cylinder is used for puncture.

[0012] When the annular cavity is in an unfilled state, the central cylinder is supported in a state where the drainage tube is wrapped around it, and the central through hole of the central cylinder is used to place the drainage tube.

[0013] In one embodiment of this application, the annular cavity includes a rigid annular ring, which is used to support the annular cavity.

[0014] When the rigid annular ring is placed inside the annular cavity, the central cylinder is in a puncture support state, and the central through hole of the central cylinder is used for puncture.

[0015] When the rigid annular ring is not placed inside the annular cavity, the central cylinder is supported in a state where the drainage tube is wrapped around it, and the central through hole of the central cylinder is used to place the drainage tube.

[0016] In one embodiment of this application, the fixing structure is a clamp structure:

[0017] The clamp structure includes a fixed arc plate and a movable arc plate, which are connected to the cover.

[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 interlocking connection is formed between the movable arc plate and the arc groove;

[0020] The movable arc plate moves within the arc groove to change the diameter of the circumferential hole.

[0021] In one embodiment of this application, the fixing structure is a variable diameter ring structure:

[0022] The variable diameter circumferential structure includes a drive disk, drive arms, and circumferential plates. Multiple drive arms are arranged inside the drive disk, and the drive disk is connected to multiple circumferential plates.

[0023] The drive arm includes a slide groove, and the circumferential plate includes a sliding connecting pin, which is connected to the slide groove.

[0024] The drive disk rotates circumferentially along the circumferential of the circumferential hole, and the circumferential plate slides radially along the circumferential hole to change the diameter of the circumferential hole.

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

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

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

[0028] In one embodiment of this application, a medicine storage cavity is provided inside the cover body for storing liquid medicine; a medicine delivery tube is provided on the medicine storage cavity for delivering liquid medicine to the medicine storage cavity;

[0029] The inner wall of the central cylinder is provided with a drug delivery channel, and the outer wall of the central cylinder is provided with a drug delivery micropore. The drug storage cavity is provided with a connection port on the side near the filling bladder. The drug storage cavity is connected to the drug delivery channel through the connection port. The drug delivery channel is used to transport the drug liquid in the drug storage cavity to the drug delivery micropore.

[0030] In one embodiment of this application, 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 liquid in the drug delivery channel to the drug delivery micropore;

[0031] The number of drug delivery channels is multiple, and the drug delivery channels are arranged at intervals around the central cylinder;

[0032] The number of drug delivery micropores is multiple, and the drug delivery micropores are arranged circumferentially around the central cylinder.

[0033] In one embodiment of this application, an elastic sealing sheet is provided at one end of the central through hole near the cover, and a cross-shaped gap is formed in the central area of ​​the elastic sealing sheet;

[0034] And / or, the cover has a cover 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 through hole, the diameter of the elastic sealing ring being smaller than the outer diameter of the drainage tube.

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

[0036] The puncture device with drainage tube fixation function of this application is provided with a central cylinder for puncture and placement of drainage tube. It includes an inflatable bladder that can be placed inside the patient's body and a blocking ring placed outside the patient's body. During use, the inflatable bladder and the blocking ring can clamp the patient's body wall. The drainage tube is held and fixed by a fixing structure. The circumferential hole in the fixing structure can adjust the tightness of the drainage tube fixation, making the fixation of the drainage tube more stable. This can reduce the probability of patient pain or even drainage tube dislodgement caused by displacement of the drainage tube due to external force, and reduce postoperative operation steps. Attached Figure Description

[0037] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0038] Figure 1 A schematic structural diagram of a puncture device with drainage tube fixation function according to an embodiment of this application is shown.

[0039] Figure 2 A schematic cross-sectional view of a puncture device with drainage tube fixation function according to an embodiment of this application is shown.

[0040] Figure 3 A schematic cross-sectional view of a puncture device with drainage tube fixation function according to an embodiment of this application is shown.

[0041] Figure 4 A schematic structural diagram of a variable-diameter circumferential structure of a puncture device with drainage tube fixation function according to an embodiment of this application is shown.

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

[0043] Figure label:

[0044] 1. Central cylinder; 2. Cover; 3. Filling bladder; 4. Fixing structure; 5. Blocking ring; 6. Circumferential hole;

[0045] 11 Central through hole; 12 Drug delivery channel; 121 Flow guide groove; 13 Filling channel; 14 Elastic sealing sheet; 15 Drug delivery micro-hole; 16 Annular cavity; 161 First filling connector; 162 Rigid annular ring; 17 CO2 injection tube;

[0046] 21. Drug storage chamber; 211. Drug delivery tube; 22. Second filling connector; 23. Elastic sealing ring;

[0047] 41. Variable diameter ring structure; 411. Drive disc; 412. Ring plate; 412a. Sliding connecting pin; 413. Drive arm; 413a. Slide groove Detailed Implementation

[0048] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0049] It should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this application to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout.

[0050] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below” or “under” the other element or feature will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0051] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprise” and / or “comprising,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

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

[0053] To make the objectives, technical solutions, and advantages of this application more apparent, exemplary embodiments according to this application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. Based on the embodiments of this application described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this application.

[0054] Therefore, in view of the aforementioned technical problems, this utility model proposes a puncture device with drainage tube fixation function, referring to... Figure 1-5 This describes a puncture device with drainage tube fixation function used to implement this utility model embodiment. For example... Figure 1 As shown, the puncture device with drainage tube fixation function includes a central cylinder 1, a filling bladder 3, a blocking ring 5, a cover 2, a fixing structure 4, and a circumferential hole 6.

[0055] The central cylinder 1 has a central through-hole 11 inside, which 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, which is used to adjust the support state of the central cylinder 1. The annular cavity 16, the central through-hole 11, and the central cylinder 1 are coaxially arranged. The annular cavity 16 can adjust the support state of the central cylinder 1, including a puncture support state and a drainage tube circumferential state. In the puncture support state, the central through-hole 11 is used for puncture; in the drainage tube circumferential state, the central through-hole 11 is used for placement of the drainage tube.

[0056] like Figure 2As shown, a flow-inflating bladder 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 flow-inflating bladder 3 is used to be placed inside the patient's body, and the blocking ring 5 is used to be placed outside the patient's body. The fluid filled into the flow-inflating bladder 3 can be a liquid (e.g., water) or a gas (e.g., air). The flow-inflating bladder 3 and the blocking ring 5 are spaced apart along the axial direction of the central cylinder 1. The flow-inflating bladder 3 can switch between an inflating state and a deflation state. When the flow-inflating bladder 3 is in the deflation state, its small volume ensures that the end of the device can be easily inserted into the patient's body (e.g., an incision in the abdominal or pelvic wall). When the flow-inflating bladder 3 is in the inflating state, it is in an expanded state under the filling action of the fluid, and has high rigidity. The flow-inflating bladder 3 and the blocking ring 5 can clamp the patient's body wall (such as the aforementioned abdominal or pelvic wall). A cover 2 is provided at the end of the blocking ring 5 away from the central cylinder 1. A fixing structure 4 is provided on the cover 2 for fixing the drainage tube. The fixing structure 4 is provided with an annular hole 6 for adjusting the tightness of the drainage tube. The drainage tube (not shown in the figure) passes through the annular hole 6 and is fixed inside the annular hole 6. That is, one end of the drainage tube is in the patient's body, and the other end can be connected to a corresponding drainage component (such as a negative pressure pump). The filling bag 3, the central cylinder 1, the annular hole 6 and the blocking ring 5 are arranged coaxially.

[0057] According to this utility model, the puncture device with drainage tube fixation function is provided with a central cylinder 1 for puncture and placement of drainage tube. It includes an inflatable bladder 3 that can be placed inside the patient's body and a blocking ring 5 placed outside the patient's body. In use, the inflatable bladder 3 and the blocking ring 5 can clamp the patient's body wall. The drainage tube is held and fixed by a fixing structure 4. The circumferential hole 6 in the fixing structure 4 can adjust the tightness of the fixation of the drainage tube, making the fixation of the drainage tube more stable. This can reduce the probability of patient pain or even drainage tube dislodgement caused by displacement of the drainage tube due to external force, and reduce postoperative operation steps.

[0058] like Figure 1 As shown, in an embodiment of this application, the annular cavity 16 includes a first filling connector 161, which is used to fill the annular cavity 16 with fluid: when the annular cavity 16 is in a filling state, 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 annular cavity 16 is in a non-filling state, the support state of the central cylinder 1 is a drainage tube encircling state, and the central through hole 11 of the central cylinder 1 is used to place the drainage tube.

[0059] The first filling connector 161 is used to control the flow of fluid. Specifically, the first filling connector 161 can be a connector with a one-way valve inside. It can be controlled to allow fluid to be filled into the annular cavity 16 and to allow fluid to be released from the annular cavity 16. For example, under normal conditions, it unilaterally blocks the opening of the connector under the pressure of the fluid in the annular cavity 16. When it is necessary to release fluid from the annular cavity 16, a corresponding push rod can be used to apply reverse 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 filling connector 161 is placed on the outside of the patient's body. The fluid filled through the first filling connector 161 can be a liquid (e.g., water) or a gas (e.g., air).

[0060] Specifically, when the central cylinder 1 is in the puncture support state, its overall rigidity is high. The central cylinder 1 resists the pressure of the patient's incision, ensuring that the central through-hole 11 is a relatively regular circular channel. This facilitates medical personnel's manipulation of the corresponding location within the patient's body through the central through-hole 11, allowing the entire device to function as a puncture device. When the central cylinder is in the drainage tube encircling state, its overall rigidity is low. Under the pressure of the patient's incision, the central through-hole 11 is compressed inwards. The drainage tube passing through the central through-hole 11 is thus constrained by the inner wall of the central cylinder 1, ensuring the reliability of the drainage tube's position and further preventing displacement under external forces. It is understood that after the surgery, the drainage tube should be inserted into the patient's body through the central through-hole 11 before the central cylinder 1 is switched from the puncture support state to the drainage tube encircling state, and then the central cylinder 1 should be switched to the drainage tube encircling state. The state switching, i.e. stiffness change, of the central cylinder 1 can be adjusted by filling or releasing fluid into or from the annular cavity 16, making the operation simpler and more convenient.

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

[0062] The rigid annular ring 162 can be made of rigid plastics such as PVC or PC, which is cost-effective while meeting the purpose of resisting the contraction pressure of the incision. The rigid annular ring 162 can be removed from the annular cavity 16. During the operation, the rigid annular ring 162 is inserted into the annular cavity 16 to increase the rigidity of the central cylinder 1, meeting the requirements for the formation of the central through hole 11 during the operation. After the operation, the rigid annular ring 162 is pulled out from the annular cavity 16. At this time, without the support of the rigid material, the rigidity of the central cylinder 1 decreases. The soft material central cylinder 1 will contract and deform inward under the contraction pressure of the patient's incision, thereby restraining and positioning the drainage tube. In this way, the rigidity switching of the central cylinder 1 is achieved by inserting and removing the rigid annular ring 162 in the annular cavity 16, which is simple and convenient to operate. The cover 2 and the blocking ring 5 are detachably connected. The detachable connection can be a screw-on snap-fit ​​connection or a threaded connection. For the central cylinder 1 made of soft material, the snap-fit ​​connection is more suitable. The groove of the annular cavity 16 is located on the outer end face of the blocking ring 5 (that is, facing the outside of the patient's body). In other words, when it is necessary to install or remove the rigid support ring, it is only necessary to remove the cover 2 from the end of the blocking ring 5. The operation is very simple.

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

[0064] It is understandable that after the surgery, the drainage tube should be inserted into the patient's body through the central through-hole 11 before the central cylinder 1 is switched from the puncture support state to the drainage tube encircling state. The central cylinder 1 has the ability to switch states, eliminating the need for postoperative procedures such as removing the trocar from the incision, placing the drainage tube, and performing suturing and suture fixation as required by existing techniques. This simplifies the procedure and improves patient comfort and satisfaction.

[0065] In the embodiments of this application, the fixing structure 4 is a clamping structure. The clamping structure includes a fixed arc plate and a movable arc plate, which are connected to the cover 2. The fixed arc plate is fixedly connected to the cover 2, and the movable arc plate is slidably connected to the cover 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 interlocking is formed between the movable arc plate and the arc groove. Corresponding toothed grooves are provided on the inner wall of the arc groove, and multiple locking teeth are provided on the side of the movable arc plate facing the toothed groove. The aforementioned concave-convex interlocking is achieved by the meshing between the protruding locking teeth and the concave toothed grooves. The movable arc plate moves in the arc groove to change the size of the annular hole 6. The longer the movable arc plate slides into the arc groove, the smaller the diameter of the annular hole 6 formed, and vice versa. In this way, by controlling the circumferential sliding distance of the movable arc plate, the drainage tube passing through the annular hole 6 is clamped tightly, improving the efficient fixation of the drainage tube.

[0066] like Figure 4 As shown in the embodiment of this application, the fixed structure 4 is a variable diameter ring structure 41: the variable diameter ring structure 41 includes a drive disk 411, a drive arm 413, and a ring piece 412. Multiple drive arms 413 are provided on the inner side of the drive disk 411, and the drive disk 411 is connected to multiple ring pieces 412. The drive arm 413 includes a sliding groove 413a, and the ring piece 412 includes a sliding connecting pin 412a, which is connected to the sliding groove 413a. The drive disk 411 rotates circumferentially along the ring hole 6, and the ring piece 412 slides radially along the ring hole 6 to change the diameter of the ring hole 6. Each annular piece 412 has its sliding connecting pin 412a correspondingly slidably connected to its respective sliding groove 413a. When the drive disk 411 is driven to rotate circumferentially along the annular hole 6, each annular piece 412 slides radially inward or outward along the annular hole 6 to adjust the diameter of the annular hole 6. The outer circumferential wall of the drive disk 411 is constructed with a textured pattern to increase the friction between the user and the drive disk 411, ensuring smooth diameter adjustment. It is understood that a corresponding limiting structure (e.g., a limiting pin) is also formed on the drive disk 411 to lock the position of the drive disk 411 after the diameter has been adjusted to the correct position.

[0067] like Figure 5As shown in the embodiment of this application, a second filling connector 22 is provided on the cover 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 bladder 3, and the second end of the filling bladder 3 is connected to the second filling connector 22. The second filling connector 22 is used to control the flow of fluid. Specifically, the second filling connector 22 can be a connector with a one-way valve inside, which can be controlled to allow fluid to be filled into the filling bladder 3 and to allow fluid to be released from the filling bladder 3. For example, under normal conditions, it unilaterally blocks the opening of the connector under the action of the fluid pressure inside the filling bladder 3. When it is necessary to release fluid from the filling bladder 3, a corresponding push rod can be used to apply reverse 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 inside the cylinder wall of the central cylinder 1, eliminating the need for separate external pipelines and simplifying the device structure.

[0068] like Figure 1 As shown in the embodiment of this application, a medicine storage chamber 21 is provided inside the cover 2, which is used to store liquid medicine. A medicine delivery pipe 211 is provided on the medicine storage chamber 21, which is used to deliver liquid medicine to the medicine storage chamber 21. The medicine delivery pipe 211 may be equipped with a one-way valve, which can be controlled to allow the input of liquid medicine into the medicine storage chamber 21, and can also be controlled to allow the release of liquid medicine from the medicine storage chamber 21.

[0069] A drug delivery channel 12 is provided on the inner wall of the central cylinder 1, and drug delivery micropores 15 are provided on the outer wall of the central cylinder 1. A connection port is provided on the side of the drug storage chamber 21 near the filling bladder 3. The drug storage chamber 21 is connected to the drug delivery channel 12 through the connection port. The drug delivery channel 12 is used to transport the drug solution in the drug storage chamber 21 to the drug delivery micropores 15. The drug delivery micropores 15 can be through-hole structures separately constructed on the outer circumferential wall of the central cylinder 1. The pore size of the drug delivery micropores 15 can be reasonably designed according to the actual drug delivery requirements. By constructing a drug storage chamber 21 in the cover 2, and filling the drug storage chamber 21 with analgesic solution, the analgesic solution is then delivered to the incision site through the drug delivery channels 12 and the drug delivery micropores 15, achieving an analgesic effect at the incision site and improving user comfort.

[0070] In one embodiment, with the central axis of the central cylinder 1 in the vertical position as a reference, the bottom wall of the drug storage cavity 21 is a conical surface with a higher outer surface and a lower inner surface. The connection port between the drug delivery channel 12 and the drug storage cavity 21 is located on the radial inner side of the conical surface, so as to ensure that the drug liquid in the drug storage cavity 21 can flow fully to each drug delivery micro-hole 15 under its own weight when the patient is lying flat or semi-lying down, thereby reducing drug liquid residue.

[0071] like Figure 3As shown in the embodiments of this application, the drug delivery channel 12 is provided with a guide groove 121 corresponding to the drug delivery micro-orifice 15. The guide groove 121 is used to transport the drug solution in the drug delivery channel 12 to the drug delivery micro-orifice 15. There are multiple drug delivery channels 12, which are arranged circumferentially around the central cylinder 1. There are also multiple drug delivery micro-orifices 15, which are arranged circumferentially around the central cylinder 1. This ensures uniform drug delivery to the incision in the patient's wall and improves the analgesic effect. In one embodiment, the outer wall of the drug storage cavity 21 is made of a transparent material, such as transparent silicone, so that medical personnel can observe the amount of drug in the drug storage cavity 21 and perform corresponding follow-up treatments.

[0072] like Figure 5 As shown in the embodiment of this application, an elastic sealing sheet 14 is provided at one end of the central through hole 11 near the cover 2, and a cross-shaped slit is formed in the central area of ​​the elastic sealing sheet 14. The cover 2 has a through hole 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 2. The diameter 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 encircle and fix the drainage tube, thereby further improving the fixing effect of the drainage tube.

[0073] In one embodiment, a CO2 injection pipe 17 is provided at the outer end of the central cylinder 1 to inject gas into the patient's body, causing the corresponding chamber to inflate and form a working space. A cross-shaped slit is formed in the central region of the elastic sealing sheet 14 to minimize CO2 leakage to the outside of the body while allowing external medical equipment, such as a laparoscope, to enter the patient's body through the cross-shaped slit.

[0074] In the embodiments of this application, the length of the central cylinder 1 is adjustable. The central cylinder 1 can be made of corrugated pipe, thereby allowing the length of the central cylinder 1 to be adjusted according to different patients, broadening the range of patients it can be used for, and ensuring reliable clamping and fixation of the fixation device to the patient's wall.

[0075] In one embodiment, a skin protective film, such as an EVA film or a non-woven fabric liner, is provided on the side end face of the blocking ring 5 facing the inflation bladder 3 to prevent the blocking ring 5 from causing damage and pressure to the patient's skin and to improve the patient's comfort; or, an adhesive film is provided on the side end face of the blocking ring 5 facing the inflation bladder 3. The aforementioned adhesive film can be, for example, adhesive tape, which adheres to the patient's skin to improve the fixation effect of the fixation device.

[0076] In one embodiment, the cover 2 and the fixing structure 4 are made of rigid or soft materials, and the central cylinder 1 and the filling bladder 3 are made of soft materials; the soft materials are silicone or latex, and the rigid materials are PC plastic or PVC plastic.

[0077] Therefore, the puncture device with drainage tube fixation function according to the embodiments of this application is provided with a central cylinder for puncture and placement of drainage tube, including an inflatable bladder that can be placed inside the patient's body and a blocking ring placed outside the patient's body. In use, the inflatable bladder and the blocking ring can clamp the patient's body wall. The drainage tube is held and fixed by a fixing structure. The circumferential hole in the fixing structure can adjust the tightness of the drainage tube fixation, making the fixation of the drainage tube more stable. This can reduce the probability of patient pain or even drainage tube dislodgement caused by displacement of the drainage tube due to external force, and reduce postoperative operation steps.

[0078] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of this application. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of this application. All such changes and modifications are intended to be included within the scope of this application as claimed in 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 merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed.

[0080] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0081] Similarly, it should be understood that, in order to simplify this application and aid in understanding one or more aspects of the application, various features of this application may sometimes be grouped together in a single embodiment, figure, or description thereof in the description of exemplary embodiments of this application. However, this approach should not be construed as reflecting an intention that the claimed application requires more features than are expressly recited in each claim. Rather, as reflected in the corresponding claims, the point of application is that the corresponding technical problem can be solved with fewer features than all of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of this application.

[0082] Those skilled in the art will understand that, apart from the mutual exclusion of features, all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or apparatus so disclosed can be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0083] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0084] It should be noted that the above embodiments are illustrative of this application and not limiting of it, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of 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 description is merely a specific embodiment or illustration of the embodiments of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A puncture device with drainage tube fixation function, characterized in that, Includes the central cylinder, filling bladder, blocking ring, cover, fixing structure, and circumferential hole: The central cylinder has a central through hole inside, which is used for puncture and placement of a drainage tube. The inner wall of the central cylinder is provided with an annular cavity, which is used to adjust the support state of the central cylinder. The first end of the central cylinder is provided with an inflatable bladder, and the second end of the central cylinder is provided with a blocking ring. The inflatable bladder is used to be placed inside the patient's body, and the blocking ring is used to be placed outside the patient's body. The end of the blocking ring away from the central cylinder is provided with a cover, and the cover is provided with a fixing structure for fixing the drainage tube. The fixing structure is provided with a circumferential hole for adjusting the tightness of the fixing of the drainage tube.

2. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, The annular cavity includes a first filling connector, which is used to fill the annular cavity with current. When the annular cavity is in a flow-filled state, the central cylinder is in a puncture support state, and the central through hole of the central cylinder is used for puncture. When the annular cavity is in an unfilled state, the central cylinder is supported in a state where the drainage tube is wrapped around it, and the central through hole of the central cylinder is used to place the drainage tube.

3. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, The annular cavity includes a rigid annular ring, which is used to support the annular cavity. When the rigid annular ring is placed inside the annular cavity, the central cylinder is in a puncture support state, and the central through hole of the central cylinder is used for puncture. When the rigid annular ring is not placed inside the annular cavity, the central cylinder is supported in a state where the drainage tube is wrapped around it, and the central through hole of the central cylinder is used to place the drainage tube.

4. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, The fixing structure is a clamp structure: The clamp structure includes a fixed arc plate and a movable arc plate, which are connected to the cover. 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 interlocking connection is formed between the movable arc plate and the arc groove; The movable arc plate moves within the arc groove to change the diameter of the circumferential hole.

5. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, The fixing structure is a variable diameter ring structure: The variable diameter circumferential structure includes a drive disk, drive arms, and circumferential plates. Multiple drive arms are arranged inside the drive disk, and the drive disk is connected to multiple circumferential plates. The drive arm includes a slide groove, and the circumferential plate includes a sliding connecting pin, which is connected to the slide groove. The drive disk rotates circumferentially along the circumferential of the circumferential hole, and the circumferential plate slides radially along the circumferential hole to change the diameter of the circumferential hole.

6. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, The cover is provided with a second charging connector; A flow channel is provided on the inner wall of the central cylinder; The first end of the charging channel is connected to the charging bladder, and the second end of the charging bladder is connected to the second charging connector.

7. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, The cover body is provided with a medicine storage chamber for storing medicine liquid; a medicine delivery tube is provided on the medicine storage chamber for delivering medicine liquid to the medicine storage chamber; The inner wall of the central cylinder is provided with a drug delivery channel, and the outer wall of the central cylinder is provided with a drug delivery micropore. The drug storage cavity is provided with a connection port on the side near the filling bladder. The drug storage cavity is connected to the drug delivery channel through the connection port. The drug delivery channel is used to transport the drug liquid in the drug storage cavity to the drug delivery micropore.

8. The puncture device with drainage tube fixation function as described in claim 7, characterized in that, The drug delivery channel is provided with a guide groove corresponding to the drug delivery micro-orifice, and the guide groove is used to transport the drug liquid in the drug delivery channel to the drug delivery micro-orifice; The number of drug delivery channels is multiple, and the drug delivery channels are arranged at intervals around the central cylinder; The number of drug delivery micropores is multiple, and the drug delivery micropores are arranged circumferentially around the central cylinder.

9. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, An elastic sealing sheet is provided at one end of the central through hole near the cover, and a cross-shaped gap is formed in the central area of ​​the elastic sealing sheet. And / or, the cover has a cover 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 through hole, the diameter of the elastic sealing ring being smaller than the outer diameter of the drainage tube.

10. The puncture device with drainage tube fixation function as described in claim 1, characterized in that, The length of the central cylinder is adjustable.

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