Ventricular drainage tube fixing device

Abstract

The utility model relates to a ventricular drainage tube fixing device. The ventricular drainage tube fixing device comprises an application, an inner sleeve, an outer cover and an extrusion sleeve. The inner sleeve is fixed on the application, a through hole for the drainage tube to pass through is formed in the inner sleeve, and a conical groove and a U-shaped opening are formed in one end of the inner sleeve. The extrusion sleeve is installed on the outer side of the inner sleeve, an extrusion block is arranged in the extrusion sleeve, the outer cover rotates to drive the extrusion sleeve to move in the axial direction of the inner sleeve, and the drainage tube is clamped through cooperation of the extrusion block and the conical groove. In addition, a sealing groove and a flexible sealing ring are arranged in the inner sleeve, so that the sealing effect and the stable fixation of the drainage tube are ensured. The drainage tube fixing device has the advantages of reducing infection risks, improving fixing firmness, reducing skin irritation and injury, facilitating nursing and the like, and is suitable for fixing drainage tubes after neurosurgery.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical drainage tubes and relates to a ventricular drainage tube fixing device. Background Art

[0002] Ventricular drainage catheters are medical devices used to treat conditions such as cerebral edema and ventricular effusion. Typically made of silicone or polyurethane, they are tubular devices that effectively drain excess fluid from the ventricles, relieving pressure and pain in the brain and restoring normal cerebral blood supply and neurological function. Ventricular drainage catheters offer advantages such as preventing brain damage, reducing intracranial pressure, and shortening hospital stays. They are widely used in neurosurgery, neurology, and emergency medicine.

[0003] The current method for fixing ventricular drainage tubes is suturing, that is, suturing 1 to 4 stitches at the skin outlet of the drainage tube. This fixation method can better fix the tube, but increases the patient's trauma and wound pain.

[0004] Traditional methods of fixing ventricular drainage tubes to the scalp are suture fixation, headband or head net, or tape fixation. Although the traditional scalp fixation method for ventricular drainage tubes is widely used, it has some disadvantages, mainly including:

[0005] 1) Risk of infection: Traditional fixation methods, such as the use of sutures or tape, may increase the risk of infection. Sutures may become a harborage for bacteria, while long-term adhesion of tape to the skin may cause skin maceration, increasing the chance of bacterial invasion.

[0006] 2) Skin irritation and damage: Prolonged use of tape or other adhesive materials may cause skin irritation, allergic reaction or damage, especially for patients with sensitive skin.

[0007] 3) Insecure fixation: Traditional fixation methods may not be secure enough, especially when the patient is active or sweating on the head. The drainage tube may shift or fall off, resulting in poor drainage or the need for re-tubing.

[0008] 4) Difficulty of care: Using traditional methods to fix the drainage tube may require more frequent care and monitoring to prevent the drainage tube from dislodgment or infection. In addition, replacing the fixation device may require more time and labor.

[0009] 5) Patient Discomfort: Traditional fixation methods may cause discomfort to patients, such as suture pain, affecting their overall comfort and quality of life.

[0010] 6) Aesthetic issues: Traditional fixation methods may leave obvious marks or damage on the patient's head, affecting the appearance. Utility Model Content

[0011] In view of this, the purpose of the present invention is to provide a ventricular drainage tube fixing device to solve the above problems.

[0012] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0013] A ventricular drainage tube fixing device, comprising an application for adhesive fixation and a locking mechanism provided on the application for fixing the drainage tube to the application; the locking mechanism comprises an inner sleeve, an outer cover, and an extrusion sleeve, the inner sleeve being fixedly provided on the application, a through hole for the drainage tube to pass through being provided between the application and the inner sleeve; the inner sleeve being provided with a thread at one end close to the application and a tapered surface at the other end; the tapered surface being provided with four tapered grooves distributed in a circumferential array, divided into a first group of tapered grooves and a second group of tapered grooves with two opposing tapered grooves as a group; the first group of tapered grooves being provided with a U-shaped opening distributed along the axial direction of the inner sleeve; one end of the outer cover being provided with a thread, the extrusion sleeve being provided inside the outer cover, fixed along the axial direction of the outer cover, and rotatingly cooperating with the outer cover along the circumferential direction of the outer cover;

[0014] The extrusion sleeve is sleeved on the inner sleeve, and two symmetrically distributed extrusion blocks are provided in the extrusion sleeve. The two extrusion blocks are respectively located in the two conical grooves of the second group of conical grooves, and fit with the conical grooves through inclined surfaces; the outer cover and the inner sleeve are connected by threads, and the extrusion sleeve is driven to move axially by rotating the outer cover, so that the inner sleeve clamps the drainage tube in the middle through the cooperation between the extrusion blocks and the inclined surfaces of the conical grooves.

[0015] Furthermore, an annular groove is provided in the outer cover, the extrusion sleeve is arranged in the annular groove, and is rotatably matched with the outer cover through the annular groove.

[0016] Furthermore, a sealing groove is provided in the inner sleeve, and a flexible sealing ring is provided in the sealing groove for sealing between the inner sleeve and the drainage tube.

[0017] Furthermore, the bottom of the U-shaped opening does not penetrate the conical surface; the sealing groove is located at the bottom of the conical surface and overlaps with the projection of the U-shaped opening on the axis of the inner sleeve. During the clamping process of the inner sleeve, the upper part of the sealing groove will be deformed, thereby squeezing the sealing ring so that the sealing ring fits tightly with the drainage tube, which not only plays a sealing role, but also further fixes the drainage tube.

[0018] Furthermore, the patch includes a fixing layer, an antibacterial layer, an adhesive layer, and a clutch layer stacked in sequence; the inner sleeve is fixed on the fixing layer; and the clutch layer and the adhesive layer are separable.

[0019] The beneficial effects of the present invention are:

[0020] 1. This new device uses a combination of application and locking mechanisms. By designing the combined structure of the inner sleeve, outer cover, and extrusion sleeve, it provides a more secure fixation for the drainage tube. The extrusion block cooperates with the inclined surface of the tapered groove to enable the inner sleeve to firmly clamp the drainage tube.

[0021] 2. This invention features a sealing groove within the inner sleeve and a flexible sealing ring. The ring deforms when the drainage tube is clamped, creating a tight fit and achieving a good seal. This not only effectively prevents fluid leakage and ensures drainage safety, but also further enhances the secure fixation of the drainage tube, reducing the risk of catheterization failure due to fluid leakage.

[0022] 3. This new dressing adopts a multi-layer structure, with the adhesive layer in direct contact with the skin. By selecting appropriate medical adhesive materials, skin irritation can be reduced. The antibacterial layer of the dressing effectively blocks the invasion of external bacteria while reducing the risk of skin maceration caused by the use of adhesive materials such as tape, thereby reducing the patient's chance of infection.

[0023] 4. Compared with traditional suture fixation, the fixing device of this utility model is more convenient and quick to install and remove. The threaded connection between the inner sleeve and the outer cover allows the nursing staff to fix or remove the drainage tube by simply turning the outer cover, reducing the complexity and time cost of the operation during the nursing process.

[0024] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a schematic diagram of the overall structure of the mid-cerebral ventricular drainage tube fixing device of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the inner sleeve in the utility model.

[0028] Figure 3 This is a cross-sectional view of the inner sleeve.

[0029] Figure 4 It is a structural diagram of the extrusion sleeve.

[0030] Figure 5Schematic diagram of the principle of clamping the drainage tube by squeezing the sleeve and the inner sleeve.

[0031] Figure numerals: 1 - application; 2 - outer cover; 3 - drainage tube; 4 - extrusion sleeve; 5 - inner sleeve; 41 - extrusion block; 51 - conical groove; 52 - U-shaped opening; 53 - sealing groove. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0033] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] See also Figures 1 to 5 , is a device for fixing a ventricular drainage tube, comprising a patch 1 for adhesive fixation and a locking mechanism disposed on the patch for securing the drainage tube to the patch; the locking mechanism comprises an outer cover 2, a drainage tube 3, an extrusion sleeve 4, and an inner sleeve 5. The patch 1 has a multi-layer structure, comprising a fixing layer, an antibacterial layer, an adhesive layer, and a clutch layer stacked in sequence. The patch 1 is intended to be adhered to the patient's head skin to provide fixed support. The inner sleeve 5 is securely fixed to the patch 1 via the fixing layer, ensuring the stability of the entire device.

[0036] The inner sleeve 5 is a hollow structure, one end of which is fixedly connected to the dressing 1 and the other end is provided with a tapered surface. The inner sleeve 5 is provided with a through-hole for the drainage tube 3 to pass through, and is provided with threads at the end near the dressing 1 for threaded connection with the outer cover 2. The tapered surface is provided with four tapered grooves 51 distributed in a circumferential array, with two opposing tapered grooves forming a group, divided into a first group of tapered grooves and a second group of tapered grooves. The first group of tapered grooves is provided with a U-shaped opening 52 distributed along the axial direction of the inner sleeve 5. The bottom of the U-shaped opening 52 does not pass through the tapered surface.

[0037] The extrusion sleeve 4 is mounted on the outside of the inner sleeve 5. An annular groove is provided within the outer cover 2. The extrusion sleeve 4 is positioned within this groove and rotatably engages with the outer cover 2 through the annular groove. It is axially fixed within the outer cover 2 and rotatable along the circumference of the outer cover 2. Two symmetrically distributed extrusion blocks 41 are provided on the inner side of the extrusion sleeve 4. These extrusion blocks 41 have beveled end faces and are positioned within the second set of tapered grooves, where they engage with the tapered grooves via their beveled surfaces. When the outer cover 2 rotates via the threaded connection, the extrusion sleeve 4 moves axially along the inner sleeve 5, driving the extrusion blocks 41 to slide along the beveled surfaces of the tapered grooves, thereby pushing the inner sleeve 5 to clamp the drainage tube 3 in the center.

[0038] The outer cover 2 is a cylindrical structure with a thread at one end for threaded connection with the inner sleeve 5. By rotating the outer cover 2, the axial movement of the extrusion sleeve 4 can be achieved, thereby adjusting the clamping force of the inner sleeve 5 on the drainage tube 3.

[0039] To enhance the device's sealing properties, a sealing groove 53 is provided within the inner sleeve 5. This groove 53 is located at the bottom of the tapered surface and partially overlaps the projection of the U-shaped opening 52 onto the axis of the inner sleeve 5. As the inner sleeve 5 clamps against the drainage tube 3, the upper portion of the sealing groove 53 deforms, squeezing the flexible sealing ring within the groove 53 and forcing it to fit tightly against the drainage tube 3, achieving a strong seal. This not only prevents fluid leakage but also further enhances the securement of the drainage tube 3.

[0040] During use, first remove the clutch layer of the dressing 1 and apply it to the patient's head. Then, insert the drainage tube 3 through the through-hole of the inner sleeve 5 and adjust it to the desired position. Next, rotate the outer cover 2 clockwise. This rotation drives the extrusion sleeve 4 along the axial direction of the inner sleeve 5. Simultaneously, the extrusion block 41, acting on the inclined surface of the tapered groove, pushes the inner sleeve 5 to clamp the drainage tube 3. As the inner sleeve 5 is tightened, the flexible sealing ring in the sealing groove 53 is compressed, forming a tight seal, ensuring that the drainage tube 3 is securely fixed and prevents fluid leakage.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A ventricular drainage tube fixation device, comprising a patch for adhesive fixation and a locking mechanism provided on the patch for securing the drainage tube to the patch; characterized in that: The locking mechanism includes an inner sleeve, an outer cover, and an extrusion sleeve. The inner sleeve is fixedly mounted on the dressing, and a through hole for the drainage tube to pass through is provided between the dressing and the inner sleeve. The inner sleeve has a thread on one end close to the dressing and a tapered surface on the other end. The tapered surface is provided with four tapered grooves distributed in a circumferential array, and is divided into a first group of tapered grooves and a second group of tapered grooves with two opposing tapered grooves. The first group of tapered grooves is provided with a U-shaped opening distributed along the axial direction of the inner sleeve. One end of the outer cover is provided with a thread. The extrusion sleeve is arranged inside the outer cover, fixed along the axial direction of the outer cover, and rotates with the outer cover along the circumference of the outer cover. The extrusion sleeve is mounted on the inner sleeve, and two symmetrically distributed extrusion blocks are provided in the extrusion sleeve. The two extrusion blocks are respectively located in the two tapered grooves of the second group of tapered grooves and fit with the tapered grooves through inclined surfaces. The outer cover and the inner sleeve are connected by threads. The extrusion sleeve is driven to move axially by rotating the outer cover, so that the extrusion blocks fit with the inclined surfaces of the tapered grooves, so that the inner sleeve clamps the drainage tube in the middle. A sealing groove is also provided in the inner sleeve, and a flexible sealing ring is provided in the sealing groove for sealing between the inner sleeve and the drainage tube; the bottom of the U-shaped opening does not penetrate the conical surface; the sealing groove is located at the bottom of the conical surface and overlaps with the projection of the U-shaped opening on the axis of the inner sleeve.

2. The ventricular drainage tube fixing device according to claim 1, characterized in that: An annular groove is provided in the outer cover, and the extrusion sleeve is arranged in the annular groove and is rotatably matched with the outer cover through the annular groove.

3. The ventricular drainage tube fixing device according to claim 1, characterized in that: The patch comprises a fixing layer, an antibacterial layer, an adhesive layer, and a clutch layer which are stacked in sequence; the inner sleeve is fixed on the fixing layer; and the clutch layer and the adhesive layer are separable.

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