Medicine injection and drainage integrated device

Abstract

The invention relates to a medicine injection and drainage integrated device which comprises an integrated header pipe, a medicine injection pipe and a drainage pipe, and the integrated header pipe extends into a human body and is arranged in a forked mode after entering the human body to form a plurality of forked branch pipes used for being placed into an articular cavity; a three-way valve is connected to the pipe section, located outside the body, of the integrated header pipe and used for being connected with a medicine injection mechanism and a drainage mechanism. A pipe cavity of the bifurcated branch pipe comprises a plurality of separation cavities, and each separation cavity is communicated with a pipe cavity of the integrated main pipe and is correspondingly provided with a medicine injection drainage opening. Medicine injection and drainage functions can be integrated, the number of in-vitro lead-out pipelines is reduced, meanwhile, the requirements of medicine injection and drainage can be met only by arranging a single catheter wound on the body surface of a patient, and the risk of retrograde infection from the catheter wound to an articular cavity is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an integrated device for drug injection and drainage. Background Art

[0002] Currently in the clinic of total joint replacement, patients with joint infection need to inject drugs into the joint cavity through a soft tube, and at the same time, the blood and tissue fluid that have seeped out of the joint cavity need to be sucked out.

[0003] The existing implementation method includes inserting three drainage tubes commonly used on the market into the patient's joint cavity, one of which is a hose for injecting drugs from outside the body, and the other two are hoses for draining the exudate from the joint cavity. The two hoses are located at different positions in the joint cavity to facilitate the drainage of exudate from different parts. The injection of drugs is generally once a day for at least 2 weeks.

[0004] In the process of clinical treatment implementation, the following problems often exist:

[0005] The patient had too many tubes leading out of the body and three drainage incisions, which made care difficult and increased the probability of contamination, making it difficult to treat infection. Clinical experience shows that the more incisions there are on the body surface, the higher the chance of infection.

[0006] The traditional drainage tube is designed with a small opening on the side of the soft tube. During clinical use, the opening of the tube in the patient's body is easily blocked by soft tissue or blood clots in the body. Over time, not only can the fluid not be drained out, but it also increases the difficulty of injecting the fluid.

[0007] There are more than three drainage holes on the patient's body surface, which increases the patient's trauma, the non-healing rate, and the patient's pain. Summary of the invention

[0008] The purpose of the present application is to provide an integrated injection and drainage device that can integrate the injection and drainage functions, reduce the number of extracorporeal lead-out tubes, and at the same time, only need to set up a single catheterization wound on the patient's body surface to meet the needs of injection and drainage, thereby avoiding the risk of retrograde infection from the catheterization wound and the catheterization wound to the joint cavity.

[0009] In order to achieve the above-mentioned object, the present invention provides an integrated device for drug injection and drainage, comprising: an integrated main pipe, the integrated main pipe extends into the body, and after entering the body, it is bifurcated to form a plurality of bifurcated branches for insertion into the joint cavity;

[0010] The section of the integrated main pipe located outside the body is connected to a three-way valve for connecting to a drug injection mechanism and a drainage mechanism respectively;

[0011] The lumen of the bifurcated branch pipe includes a plurality of partition chambers, each of which is communicated with the lumen of the integrated main pipe and is correspondingly provided with a drug injection and drainage port.

[0012] In an optional embodiment, the bifurcated branch pipes are independently arranged, and the lumen of each bifurcated branch pipe is communicated with the lumen of the integrated main pipe.

[0013] In an optional embodiment, the roots of the plurality of bifurcated branch tubes converge at the insertion end of the integrated main tube extending into the body, the lengths of the bifurcated branch tubes are different, and the lengths of the different bifurcated branch tubes gradually increase from near to far.

[0014] In an optional embodiment, the bifurcated branches and the integrated main pipe respectively include circular lumens, and the bifurcated branches have the same lumen diameter, while the integrated main pipe has a lumen diameter greater than that of the bifurcated branches.

[0015] In an optional embodiment, a separator bar is provided in the circular tube cavity of the bifurcated branch tube, the separator bar comprises a long claw-shaped structure with a Y-shaped cross section, and the separator bar extends along the axial direction of the bifurcated branch tube;

[0016] The end of each separation claw is connected to the inner wall of the bifurcated branch pipe to form the separation chamber.

[0017] In an optional embodiment, the length of the dividing strip is the same as the length of the bifurcated branch tube, and the angle between adjacent dividing claws is 120°, so as to evenly divide the circular lumen of the bifurcated branch tube.

[0018] In an optional embodiment, the drug injection and drainage port comprises a long incision, and the long incision is opened on the side wall of the bifurcated branch tube;

[0019] The long cuts include a plurality of cuts, and the long cuts correspond to the partition chambers one by one.

[0020] In an optional embodiment, the length of the long incision is the same as the length of the bifurcated branch, and the long incision is arranged in the middle of the partition chamber.

[0021] In an optional embodiment, the three-way valve includes a drug injection interface, a drainage interface and a liquid passage interface, the drainage interface and the liquid passage interface are arranged in the same pipeline direction, and the drug injection interface is arranged on a lateral branch of the three-way valve;

[0022] The liquid-passing interface is connected to the integrated main pipe, the drainage interface is connected to the drainage mechanism, the drug injection interface is used to be connected to the drug injection mechanism, and the drug injection interface is detachably connected to a valve cover;

[0023] The three-way valve comprises a control knob and a valve stem of an integrated structure.

[0024] In an optional embodiment, the drainage mechanism includes a drainage tube and a drainage ball, one end of the drainage tube is connected to the drainage interface, and the other end is connected to the drainage ball.

[0025] The integrated injection and drainage device in the present application can integrate the injection function and the drainage function on the same pipeline system through the setting of a single integrated main pipe. Combined with the setting of the single integrated main pipe, only one catheterization incision is required on the patient's body surface to meet the treatment needs.

[0026] The integrated main tube is bifurcated after entering the body, forming multiple bifurcated branches for insertion into the joint cavity, which can replace the existing conventional multiple drainage tubes, reduce the number of incisions opened on the patient's body surface, restore the basic drainage function, and at the same time provide the injection function.

[0027] Multiple bifurcated branches can cover different parts of the joint cavity in the body, thereby effectively and fully covering the joint cavity areas that require drainage and injection, ensuring reliable treatment of joint infection symptoms.

[0028] By setting a three-way valve on the integrated main pipe placed outside the body, the drainage operation and the injection operation can be switched through the flow direction control of the three-way valve to ensure different needs during the treatment process.

[0029] By dividing the lumen of the bifurcated branch tube into a plurality of independent compartments and making each compartment communicate with the lumen of the integrated main tube, and further providing a corresponding drug injection and drainage port in each compartment, blockage of the bifurcated branch tube by soft tissue or blood clots in the body can be avoided.

[0030] Multiple independent separated chambers can avoid the risk of complete blockage of the bifurcation branch, and can enhance the uniformity of dispersion of the infused drug and the uniformity of aspiration of the joint cavity exudate, thus ensuring the reliability and stability of the injection and drainage operations to a great extent.

[0031] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1This is a schematic diagram of the overall structure of the integrated device for drug injection and drainage in this application;

[0034] Figure 2 It is a schematic diagram of the cross-sectional structure of the bifurcated branch pipe;

[0035] Figure 3 It is a schematic diagram of the connection structure between the three-way valve and the integrated main pipe, the drainage pipe and the valve cover.

[0036] icon:

[0037] 1-Integrated main pipe;

[0038] 2- bifurcated branch tube; 21- partition chamber; 22- injection and drainage port; 23- partition bar;

[0039] 3-three-way valve; 31-drug injection interface; 32-drainage interface; 33-liquid connection interface; 34-valve cover; 35-control knob;

[0040] 4-Drainage tube;

[0041] 5-Drainage ball. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The integrated injection and drainage device in this application is mainly used for the treatment of joint infections. By changing the structure of existing conventional drainage tubes, it improves the treatment effect of patients, reduces the damage to patients, and reduces the difficulty of nursing and the further risk of wound infection.

[0046] See also Figure 1 The integrated device for drug injection and drainage in the present application comprises an integrated main pipe 1, which extends into the body. The integrated main pipe 1 specifically has the dual functions of drug injection and drainage. The drainage is kept normal during normal operation. When drug injection is required, the drug solution is introduced into the body through the integrated main pipe 1.

[0047] From the perspective of restoring the existing conventional multiple drainage tubes, the integrated main tube 1 is bifurcated after entering the body to form multiple bifurcated branches 2 for insertion into the joint cavity. Through this setting, only one catheter placement incision needs to be opened on the body surface, and the integrated main tube 1 before bifurcation can be extended into the body through a single catheter placement incision to meet the drainage and injection requirements.

[0048] At the same time, multiple bifurcated branches 2 can be inserted into different parts of the joint cavity, which can increase the range of drainage and injection, so that the joint cavity exudate can be fully and thoroughly drained through the multiple bifurcated branches 2, while ensuring that the infused liquid is effectively dispersed in the joint cavity, so that the infused antibiotic liquid is maintained in a relatively stable high concentration environment in the joint cavity.

[0049] In order to be able to switch between drainage and injection operations, by connecting the three-way valve 3 to the pipe section of the integrated main pipe 1 located outside the body, and connecting the three-way valve 3 to the injection mechanism and the drainage mechanism respectively, the liquid flow direction of the three-way valve 3 can be controlled, so that the drained joint cavity exudate or the injected drug can be discharged from the joint cavity to the outside through the integrated main pipe 1, or enter the joint cavity inside the body.

[0050] In order to improve the drainage effect of joint cavity exudate and the infusion effect of drugs into the joint cavity and prevent the bifurcated branch tube 2 inserted into the body from being blocked by soft tissue or blood clots, the structure of the bifurcated branch tube 2 is improved to ensure smooth drainage and drug injection channels.

[0051] Specifically, the lumen of the bifurcated branch tube 2 includes multiple partition chambers 21, and each partition chamber 21 is respectively communicated with the lumen of the integrated main tube 1, so that the joint cavity exudate can enter the integrated main tube 1 through the bifurcated branch tube 2, and the perfusion solution in the integrated main tube 1 can pass into the bifurcated branch tube 2.

[0052] Each partition chamber 21 is correspondingly provided with a drug injection and drainage port 22 , which can ensure that the liquid flows smoothly between the bifurcated branch 2 and the space of the joint cavity in the body through the drug injection and drainage port 22 , thereby ensuring smooth flow of liquid between the joint cavity and the bifurcated branch 2 .

[0053] In the present application, a separation chamber 21 is provided on each bifurcated branch tube 2, and the separation chambers 21 are respectively communicated with the lumen of the integrated main tube 1, thereby avoiding the risk of complete blockage of the bifurcated branch tube 2. By increasing the flow chamber between the bifurcated branch tube 2 and the internal space of the joint cavity, even if partial blockage occurs, normal drainage and injection can be maintained.

[0054] From the perspective of avoiding the risk of blockage, each bifurcated branch tube 2 is independently arranged, and the lumen of each bifurcated branch tube 2 is connected to the lumen of the integrated main tube 1. Combined with the increase of the flow chamber formed by the separation chamber 21 mentioned above, the blockage of the liquid flow channel can be avoided to a great extent, ensuring the normal drainage and injection.

[0055] Based on the specific structure of the bifurcated branch tubes 2, in one specific embodiment, the roots of multiple bifurcated branch tubes 2 converge at the insertion end of the integrated main tube 1 extending into the body. Furthermore, the integrated main tube 1 extends at least a certain length after entering the body from the catheterization wound on the body surface. Multiple bifurcated branch tubes 2 diverge from the extension end of the integrated main tube 1 extending into the body. On the one hand, it can reduce the extravasation of liquid from the catheterization wound, and on the other hand, it can ensure that the bifurcated branch tubes 2 are effectively inserted into the joint cavity, while reducing the flow of liquid in the smaller bifurcated branch tubes 2 and reducing the flow resistance.

[0056] The bifurcated branch tubes 2 in this embodiment include three bifurcated branch tubes 2, and the lengths of the three bifurcated branch tubes 2 are different from each other, so that the bifurcated branch tubes 2 with the injection and drainage ports 22 can be easily placed at different positions of the joint cavity.

[0057] Furthermore, in order to enable the bifurcated branch tubes 2 to effectively cover the body from a three-dimensional perspective, the lengths of different bifurcated branch tubes 2 in this embodiment gradually increase from near to far. Specifically, the three bifurcated branch tubes 2 are 5 cm, 10 cm, and 15 cm respectively, and the bifurcated branch tubes 2 of different lengths can be placed in different parts of the body to meet the drainage and injection needs of the body.

[0058] From the perspective of facilitating the insertion of the pipeline, the bifurcated branch tube 2 and the integrated main tube 1 each include a circular lumen, which can facilitate the insertion of the integrated main tube 1 through the catheterization wound on the body surface, and the insertion of the bifurcated branch tube 2 into the joint cavity. The circular lumen can also keep the liquid in a smooth flow state.

[0059] In order to ensure the uniformity of drainage and injection liquid circulation, the lumens of different bifurcated branches 2 have the same diameter. Combined with the partition chamber 21 and the injection drainage port 22 provided on each bifurcated branch 2, a relatively uniform flow channel distribution of the bifurcated branch 2 can be formed.

[0060] At the same time, in order to ensure the effective collection of drainage liquid from the bifurcated branch pipe 2 to the integrated main pipe 1, and the effective dispersion of injection liquid from the integrated main pipe 1 to the bifurcated branch pipe 2, and to ensure the patency of drainage and injection, the lumen diameter of the integrated main pipe 1 is larger than the lumen diameter of the bifurcated branch pipe 2.

[0061] Combination Figure 2 In order to form a separation chamber 21 in the bifurcated branch tube 2, a separation strip 23 is provided in the circular tube cavity of the bifurcated branch tube 2 in this embodiment. The separation strip 23 includes a long claw-like structure with a Y-shaped cross-section, and the separation strip 23 extends along the axial direction of the bifurcated branch tube 2.

[0062] Furthermore, the Y-shaped long claw-like structure includes three circumferentially evenly spaced separation claws of the same shape, and the end of each separation claw is connected to the inner wall of the bifurcated branch pipe 2 to form a separation chamber 21 of the bifurcated branch pipe 2.

[0063] In order to form a relatively reliable separation chamber 21, the length of the separation strip 23 is the same as that of the bifurcated branch tube 2, and the angle between adjacent separation claws is 120°, so as to divide the circular tube cavity of the bifurcated branch tube 2 into three separation chambers 21 of the same shape and volume.

[0064] From the perspective of preventing the bifurcated branch tube 2 from being blocked by soft tissue or blood clots in the body, the drug injection and drainage port 22 in this embodiment includes a long incision, which is opened on the side wall of the bifurcated branch tube 2, and can ensure the smooth flow of liquid through the long incision. Specifically, the long incision is a through-length structure extending along the bifurcated branch tube 2, which can ensure sufficient circulation space for the liquid, thereby avoiding the risk of blockage.

[0065] In this embodiment, the wall thickness a of the bifurcated branch tube 2 is 0.8-1.2 mm, the outer diameter b is 4-6 mm, and the width of the long strip incision is 1.2-1.8 mm. Preferably, the wall thickness a of the bifurcated branch tube 2 is 1 mm, the outer diameter b is 5 mm, and the width of the long strip incision is 1.5 mm, which can meet the requirements of structural strength and smooth flow of liquid.

[0066] In this embodiment, the long incisions on the bifurcated branch tube 2 include multiple channels, which can ensure the uniformity and patency of the liquid flow. Furthermore, the long incisions correspond to the separation chambers 21 one by one, which can ensure the effective flow of liquid between the joint cavity and the separation chambers 21 while ensuring sufficient liquid flow space formed by the multiple separation chambers 21.

[0067] In order to ensure sufficient and reliable circulation of the liquid, the length of the long cut is the same as the length of the bifurcated branch tube 2, that is, a long cut is set in the length direction of each partition chamber 21 in the bifurcated branch tube 2 to form a grooved blood trough tube, and the long cut is set in the middle of the partition chamber 21. Through this arrangement, combined with three partition chambers 21 of the same shape and volume, the long cuts can be evenly distributed on the circumference of the bifurcated branch tube 2, which promotes the uniform and smooth circulation of the liquid to the greatest extent.

[0068] See also Figure 3 The three-way valve 3 in this embodiment includes an injection interface 31, a drainage interface 32 and a liquid interface 33. The three interfaces have different functions respectively. The liquid interface 33 is specifically used for the bidirectional flow of drainage liquid and injection liquid under different conditions.

[0069] Based on maintaining the normal state of drainage, and when injection is required, the injection liquid is passed into the body through the integrated main pipe 1, and the drainage interface 32 and the liquid interface 33 are arranged in the same pipeline direction, mainly for normal drainage operation. Under normal drainage operation, the three-way valve 3 maintains the connection between the drainage interface 32 and the liquid interface 33, and at the same time keeps the liquid interface 33 blocked from the injection interface 31, thereby performing normal drainage operation.

[0070] The injection interface 31 is arranged on the lateral branch of the three-way valve 3, and can control the on and off of different flow paths in the three-way valve 3 when injection is needed, so that the injection interface 31 is connected to the liquid interface 33 and the connection between the drainage interface 32 and the liquid interface 33 is blocked to switch the injection operation.

[0071] Through the setting of the three-way valve 3, different operating states can be switched conveniently. The three-way valve 3 in this embodiment is specifically a medical three-way valve 3 in structure, and the three interfaces are all threaded connection ports, which are convenient for quick connection with the integrated main pipe 1 and the drainage pipe 4.

[0072] The liquid-passing interface 33 maintains a normal fixed threaded connection relationship with the integrated main pipe 1, and the drainage interface 32 maintains a normal fixed threaded connection relationship with the drainage mechanism.

[0073] Based on the form of intermittent drug injection, the drug injection interface 31 is used to connect with the drug injection mechanism. Preferably, the drug injection mechanism and the drug injection interface 31 are selectively and intermittently connected. When drug injection is required, the drug injection interface 31 is connected through the drug injection mechanism in the form of a medical syringe, and the flow path of the three-way valve 3 is adjusted to inject the drug.

[0074] Based on the above operation mode, the injection port 31 is detachably connected to a valve cover 34 , and the valve cover 34 is specifically a cap-shaped end cover with threads, which can ensure airtightness.

[0075] From the perspective of flow path on-off control, the three-way valve 3 includes an integrated control knob 35 and a valve stem (not shown in the figure). The valve stem is connected to the valve seat of the three-way valve 3. A flow channel is provided in the circumferential direction of the bottom of the valve stem. By turning the control knob 35, the corresponding flow channel of the valve stem is controlled, so that switching between different operations can be satisfied. The control knob 35 is a T-shaped structure, which can be easily turned by medical staff.

[0076] The drainage mechanism includes a drainage tube 4 and a drainage ball 5. One end of the drainage tube 4 is connected to the drainage interface 32, and the other end is connected to the drainage ball 5. The drainage ball 5 is specifically a medical drainage ball 5 that can provide vacuum negative pressure. It can be combined with the connection of the drainage tube 4 to effectively and reliably drain and collect the exudate in the joint cavity.

[0077] The integrated device for injection and drainage of the present invention only needs to be equipped with an integrated main pipe 1 and a single catheterization wound on the patient's body surface to meet the needs of injection and drainage, avoiding the risk of retrograde infection from the catheterization wound and the catheterization wound to the joint cavity.

[0078] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0079] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An integrated device for drug injection and drainage, characterized in that: include: An integrated main tube, which extends into the body and is bifurcated after entering the body to form a plurality of bifurcated branches for placement into the joint cavity; The section of the integrated main pipe located outside the body is connected to a three-way valve for connecting to a drug injection mechanism and a drainage mechanism respectively; The lumen of the bifurcated branch pipe includes a plurality of partition chambers, each of which is communicated with the lumen of the integrated main pipe and is correspondingly provided with a drug injection and drainage port.

2. The integrated device for drug injection and drainage according to claim 1, characterized in that: The bifurcated branch pipes are arranged independently of each other, and the lumen of each bifurcated branch pipe is communicated with the lumen of the integrated main pipe.

3. The integrated device for drug injection and drainage according to claim 2, characterized in that: The roots of the plurality of bifurcated branch pipes converge at the insertion end of the integrated main pipe extending into the body, the lengths of the bifurcated branch pipes are different from each other, and the lengths of the different bifurcated branch pipes gradually increase from near to far.

4. The integrated device for drug injection and drainage according to claim 2, characterized in that: The bifurcated branch pipes and the integrated main pipe respectively include circular lumens, but the lumens of the bifurcated branch pipes have the same diameter, while the lumens of the integrated main pipe have a diameter greater than that of the bifurcated branch pipes.

5. The integrated device for drug injection and drainage according to claim 4, characterized in that: A separator bar is arranged in the circular tube cavity of the bifurcated branch tube, the separator bar comprises a long claw-shaped structure with a Y-shaped cross section, and the separator bar extends along the axial direction of the bifurcated branch tube; The end of each separation claw is connected to the inner wall of the bifurcated branch pipe to form the separation chamber.

6. The integrated device for drug injection and drainage according to claim 5, characterized in that: The length of the dividing strip is the same as that of the bifurcated branch tube, and the angle between adjacent dividing claws is 120°, so as to evenly divide the circular lumen of the bifurcated branch tube.

7. The integrated drug injection and drainage device according to any one of claims 1 to 6, characterized in that: The drug injection and drainage port comprises a long incision, and the long incision is opened on the side wall of the bifurcated branch pipe; The long cuts include a plurality of cuts, and the long cuts correspond to the partition chambers one by one.

8. The integrated device for drug injection and drainage according to claim 7, characterized in that: The length of the long incision is the same as the length of the bifurcated branch pipe, and the long incision is arranged in the middle of the partition chamber.

9. The integrated device for drug injection and drainage according to claim 7, characterized in that: The three-way valve comprises a drug injection interface, a drainage interface and a liquid passage interface, the drainage interface and the liquid passage interface are arranged in the same pipeline direction, and the drug injection interface is arranged on a lateral branch of the three-way valve; The liquid-passing interface is connected to the integrated main pipe, the drainage interface is connected to the drainage mechanism, the drug injection interface is used to be connected to the drug injection mechanism, and the drug injection interface is detachably connected to a valve cover; The three-way valve comprises a control knob and a valve stem of an integrated structure.

10. The integrated device for drug injection and drainage according to claim 9, characterized in that: The drainage mechanism comprises a drainage tube and a drainage ball. One end of the drainage tube is connected to the drainage interface, and the other end is connected to the drainage ball.

Images