Craniocerebral postoperative drainage tube fixing device

Abstract

The invention discloses a craniocerebral postoperative drainage tube fixing device which comprises a head fixing support and a drainage tube, a first arc-shaped plate and a second arc-shaped plate are arranged on the head fixing support, the first arc-shaped plate and the second arc-shaped plate are arranged in a staggered mode and connected with each other, and a mounting hole is formed in the connecting position of the first arc-shaped plate and the second arc-shaped plate. A positioning assembly is mounted in the mounting hole, and a drainage tube fixing clamp is arranged on the first arc-shaped plate or the second arc-shaped plate; the fixing position of the drainage tube can be flexibly adjusted according to the skull drilling position of a patient, the postoperative drainage tube is effectively prevented from shifting or loosening, through the design of the annular air bag and the positioning air bag, the fixing stability can be improved, the comfort of the patient can be remarkably improved, the tension warning mechanism provides real-time stress feedback, and the safety of the patient is improved. Medical staff are helped to adjust the position of the head of a patient in time, improper movement is avoided, safety is guaranteed, and meanwhile the normal drainage effect of the drainage tube is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a fixing device for a drainage tube after craniocerebral surgery. Background Technique

[0002] Craniocerebral surgery is a treatment method for craniocerebral injuries, tumors, hematomas or other brain diseases. During the surgery, doctors will repair or treat the patient's brain through craniotomy. Due to the complex surgical process and its impact on the patient's brain structure, a drainage tube is usually required after the surgery to drain excess cerebrospinal fluid, blood or other body fluids to ensure the healthy recovery of the surgical area. However, the fixation of the drainage tube after the surgery has always been a major problem in clinical practice. How to ensure the stability of the drainage tube without displacement, loosening and other problems is crucial for postoperative rehabilitation.

[0003] Existing problems in the fixation of the drainage tube after craniocerebral surgery:

[0004] Currently, the fixation methods of the drainage tube after the surgery mostly rely on suturing the drainage tube directly to the patient's scalp. Although this method is relatively simple, it has some significant defects: the friction force on the patient's scalp surface decreases due to hair coverage, sebum secretion or postoperative swelling, and the suture is prone to loosening; in addition, when the position of the drainage tube needs to be adjusted after suture fixation, it is necessary to suture again, which increases the operational complexity, and there is a lack of a real-time monitoring mechanism for the pulling force of the drainage tube, making it difficult to prevent the risk of intracranial catheter displacement caused by excessive pulling. Summary of the Invention

[0005] The purpose of the present invention is to provide a fixing device for a drainage tube after craniocerebral surgery to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A fixing device for a drainage tube after craniocerebral surgery, including a head fixing bracket and a drainage tube. The head fixing bracket is provided with a first arc-shaped plate and a second arc-shaped plate. The first arc-shaped plate and the second arc-shaped plate are arranged in an alternating manner and connected to each other. An installation hole is provided at the connection of the first arc-shaped plate and the second arc-shaped plate, and a positioning component is installed in the installation hole. A drainage tube fixing clip is provided on the first arc-shaped plate or the second arc-shaped plate.

[0007] Preferably, the positioning component includes a drainage tube fixing member, and the drainage tube fixing member includes:

[0008] A base, the base is arranged in the installation hole, a through hole is opened on the inner side of the base, and several guide posts are provided on the end face of the base. The guide posts are used to guide the base to move along the axial direction of the installation hole and prevent the base from rotating;

[0009] An air vent pipe, the air vent pipe is fixed in the through hole of the base, one end of the air vent pipe is provided with a valve nozzle, and the other end is provided with a positioning airbag.

[0010] Preferably, the surface of the positioning airbag is provided with a recess for accommodating the drainage tube. The depth of the recess is less than the outer diameter of the drainage tube. The recess is arc-shaped and has a size matching the tube wall of the drainage tube to accommodate the drainage tube. When the positioning airbag is inflated, the positioning airbag applies a squeezing force to the drainage tube, causing the drainage tube to adhere to and be fixed to the patient's head.

[0011] Preferably, the opening of the recess is shaped with a larger outer and smaller inner diameter. Two edges of the opening of the recess are provided with arc transition zones, which are used to reduce the contact stress between the outer wall of the drainage tube and the edge of the recess and guide the drainage tube to automatically align with the center line of the recess.

[0012] Preferably, the recess is provided with a thickened part, and an arc-shaped bracket is provided inside the thickened part.

[0013] Preferably, the positioning assembly includes a head fixing member.

[0014] Preferably, a tensile warning mechanism is provided on the tube wall of the drainage tube;

[0015] The tensile warning mechanism includes:

[0016] A positioning wheel, which is arranged on the drainage tube, and a slider is provided at the end of the positioning wheel;

[0017] A housing, which is arranged outside the slider and is slidably connected to the slider;

[0018] A tension spring, one end of which is fixed to the inner wall of the housing and the other end is fixed to the slider.

[0019] Preferably, an annular airbag is provided inside the head fixing bracket, and the annular airbag is used to adapt to patients with different head shapes.

[0020] Preferably, airbag sealing covers are provided at the air inlet ends of the positioning airbag and the annular airbag.

[0021] Preferably, an extension part is designed at the connection between the positioning airbag and the ventilation pipe, and the extension part is used to adaptively adjust the angle of the positioning airbag.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. For this craniotomy postoperative drainage tube fixing device, through the cooperation of the positioning assembly and the arc-shaped plate, the fixing method of the drainage tube can be flexibly adjusted according to the skull drilling position of the patient, effectively preventing the displacement or loosening of the postoperative drainage tube and ensuring the drainage effect;

[0024] 2. This craniotomy postoperative drainage tube fixation device can better adapt to patients with different head shapes by setting an annular airbag and a positioning airbag. The annular airbag can provide uniform pressure according to the patient's head shape, and the positioning airbag can stably fix the drainage tube on the patient's head after inflation, avoiding discomfort or excessive compression and improving the patient's comfort.

[0025] 3. This craniotomy postoperative drainage tube fixation device can effectively disperse the pressure of the positioning airbag on the drainage tube by setting a recessed part and a thickened part. The thickened part and the arc-shaped bracket effectively reduce the extrusion of the drainage tube, thus avoiding the deformation or damage of the drainage tube and further ensuring the drainage effect of the drainage tube.

[0026] 4. This craniotomy postoperative drainage tube fixation device can monitor the stress condition of the drainage tube by setting a tensile warning mechanism. The tensile warning mechanism provides intuitive stress feedback through the changes of the positioning wheel and the tension spring, helping medical staff adjust the patient's head position in time or restrict improper activities, and avoiding the risks brought by excessive stretching or movement.

[0027] 5. This craniotomy postoperative drainage tube fixation device can provide auxiliary positioning of the top of the head by setting a head fixing part and an airbag. The head fixing part ensures an appropriate distance between the patient's head top and the fixing bracket, avoiding direct contact between the drainage tube fixation device and the patient's head top, further improving the patient's comfort and avoiding discomfort caused by contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of the present invention;

[0029] Figure 2 is the top view of the top of the head bracket of the present invention;

[0030] Figure 3 is the top view of the present invention after the patient wears the head fixing bracket;

[0031] Figure 4 is the structural schematic diagram of the head fixing part of the present invention;

[0032] Figure 5 is the structural schematic diagram of the head fixing part of the present invention with the drainage tube fixed;

[0033] Figure 6 is the partial structural schematic diagram of the installation hole of the present invention;

[0034] Figure 7 is the structural schematic diagram of the drainage tube fixing part of the present invention;

[0035] Figure 8 is the change diagram of the drainage tube fixing part and the head fixing part of the present invention after inflation;

[0036] Figure 9 Internal structure schematic diagram of the thickened part of the present invention;

[0037] Figure 10 Internal structure schematic diagram of the tensile warning mechanism of the present invention.

[0038] In the figure: 1. Head fixing bracket; 2. Drainage tube; 3. First arc plate; 4. Second arc plate; 5. Mounting hole; 6. Positioning component; 601. Drainage tube fixing part; 6011. Base; 6012. Guide post; 6013. Vent pipe; 6014. Valve nozzle; 6015. Positioning airbag; 6016. Concave part; 6017. Arc transition area; 6018. Thickened part; 6019. Arc bracket; 602. Head fixing part; 7. Drainage tube fixing clip; 8. Tensile warning mechanism; 801. Positioning wheel; 802. Slide block; 803. Outer shell; 804. Tension spring; 9. Annular airbag; 10. Airbag sealing cover; 11. Extension part. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] In the description of this patent, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.

[0042] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a number of" means two or more, unless otherwise specifically defined.

[0043] Embodiment

[0044] Please refer to Figures 1-10 As shown, a technical solution of a fixing device for a drainage tube after craniocerebral surgery provided by the present invention: A fixing device for a drainage tube after craniocerebral surgery includes a head fixing bracket 1 and a drainage tube 2. A first arc-shaped plate 3 and a second arc-shaped plate 4 are fixedly connected to the head fixing bracket 1. The first arc-shaped plate 3 and the second arc-shaped plate 4 are arranged in an alternating manner and connected to each other. An installation hole 5 is provided at the connection of the first arc-shaped plate 3 and the second arc-shaped plate 4. A positioning component 6 is installed in the installation hole 5. A drainage tube fixing clip 7 is installed on the first arc-shaped plate 3 or the second arc-shaped plate 4. When in use, the operator first inserts the positioning component 6 into the installation hole 5, then wears the head fixing bracket 1 on the patient's head. Next, the drainage tube 2 is fixed by the positioning component 6. Finally, the middle part of the drainage tube 2 is reinforced and fixed by the drainage tube fixing clip 7.

[0045] In this embodiment, the structure of the drainage tube fixing clip 7 is as Figure 4 shown. It includes two semi-circular ring-shaped holding parts. A buckle is designed on the side of the holding ring. When in use, open the holding ring to place the drainage tube 2 inside the holding ring, and then close the holding ring and lock the buckle.

[0046] The positioning component 6 includes a drainage tube fixing member 601. The structure of the drainage tube fixing member 601 is as Figure 7As shown, the drainage tube fixing member 601 includes components such as a base 6011 and a ventilation tube 6013. The base 6011 is installed inside the mounting hole 5. A through hole is provided inside the base 6011. A number of guide posts 6012 are provided on the end face of the base 6011. The guide posts 6012 are used to guide the axial movement of the base 6011 along the mounting hole 5 and prevent the base 6011 from rotating. The ventilation tube 6013 is fixed in the through hole of the base 6011. One end of the ventilation tube 6013 is provided with a valve nozzle 6014, and the other end is provided with a positioning airbag 6015. In this embodiment, the number of guide posts 6012 is four, which are respectively arranged at the gap positions between the first arc plate 3 and the second arc plate 4 to ensure the positioning accuracy of the drainage tube 2. During the positioning process of the drainage tube 2, the operator needs to align each guide post 6012 with the gap between the first arc plate 3 and the second arc plate 4 and insert the ventilation tube 6013 into the through hole of the base 6011. Subsequently, the positioning airbag 6015 is inflated through an external inflation device to make it expand. During the expansion process, the operator adjusts the position of the drainage tube 2 so that the drainage tube 2 is located at the lower end of the positioning airbag 6015. After inflation is completed, the positioning airbag 6015 will ensure that the drainage tube 2 is firmly fixed on the patient's head. Finally, the head is sealed through the airbag sealing cover 10 at the part of the valve nozzle 6014.

[0047] In specific implementation, the type of the valve nozzle 6014 is not mandatorily limited, but preferably a Schrader valve nozzle. To further enhance the sealing effect, sealing rings can be designed on the inner side of the base 6011 and the lower end face of the airbag sealing cover 10. The sealing rings can not only improve the overall sealing performance but also effectively avoid hard contact between these two parts and the two ends of the mounting hole 5, thereby avoiding possible wear.

[0048] The surface of the positioning airbag 6015 is provided with a recess 6016 for accommodating the drainage tube 2. The depth of the recess 6016 is less than the outer diameter of the drainage tube 2. The recess 6016 is in an arc shape and its size matches the tube wall of the drainage tube 2 to accommodate the drainage tube 2. In order to reduce the pressure of the positioning airbag 6015 on the drainage tube 2 and further achieve the positioning effect, the recess 6016 is designed. The specific structure of the recess 6016 is as Figure 8 shown. When fixing the position of the drainage tube 2, the operator needs to make adjustments during the expansion process of the positioning airbag 6015 and place the drainage tube 2 at the position of the recess 6016. When the positioning airbag 6015 is fully inflated, the positioning airbag 6015 applies a squeezing force to the drainage tube 2, causing the drainage tube 2 to fit and be fixed on the patient's head.

[0049] The opening of the recess 6016 is shaped like a large outer and small inner, and two edges of the opening of the recess 6016 are provided with arc transition zones 6017. The arc transition zones 6017 are used to reduce the contact stress between the outer wall of the drainage tube 2 and the edge of the recess 6016, and guide the drainage tube 2 to automatically align with the center line of the recess 6016.

[0050] The recess 6016 is provided with a thickened part 6018, and an arc bracket 6019 is arranged inside the thickened part 6018. Through the cooperation of the thickened part 6018 and the arc bracket 6019, the compression on the drainage tube 2 can be further reduced, so as to ensure that the drainage tube 2 will not be excessively squeezed or deformed during use, and improve the comfort of the patient.

[0051] The positioning assembly 6 further includes a head fixing member 602, and the head fixing member 602 is used to further position the top part of the patient's head. The specific structure of the head fixing member 602 is as Figure 8 shown. Its structure is basically the same as that of the drainage tube fixing member 601. The main difference is that the airbag of the head fixing member 602 is relatively small, and its size is slightly smaller than that of the positioning airbag 6015. In addition, the main function of the head fixing member 602 is to fix the top of the patient's head to ensure that the top of the patient's head maintains an appropriate distance from the first arc plate 3 and the second arc plate 4 and avoid direct contact. Since the function of the head fixing member 602 is specifically for the positioning of the top of the patient's head, this component does not necessarily need to be configured with the recess 6016.

[0052] During actual use, the position of the head fixing member 602 can be adjusted adaptively according to the specific position of the skull drilling. For example, when the skull drilling is located in the parietal bone area, the head fixing member 602 can be placed at the front and rear of the patient's head respectively as needed, as Figure 3 shown.

[0053] A tensile warning mechanism 8 is arranged on the tube wall of the drainage tube 2. The tensile warning mechanism 8 includes components such as a positioning wheel 801, a housing 803, a tension spring 804, etc. Its internal structure is as Figure 10 shown. The positioning wheel 801 is arranged on the side wall of the drainage tube 2. A slider 802 is arranged at the end of the positioning wheel 801. The housing 803 is arranged outside the slider 802 and is slidably connected to the slider 802. One end of the tension spring 804 is fixed on the inner wall of the housing 803, and the other end of the tension spring 804 is fixed on the slider 802.

[0054] In the specific implementation process, a retaining edge can be designed on the side of the positioning wheel 801 to prevent the drainage tube 2 from detaching from the positioning wheel 801; the tensile warning mechanism 8 can be installed on the patient's hospital bed frame or wall. When the patient's head moves, the tension spring 804 will displace due to stretching or contraction. Family members or medical staff can intuitively observe the force condition of the drainage tube 2 through the position change of the positioning wheel 801 and adjust the patient's head position as needed. In addition, if the patient is conscious, the change in the tensile force of the tension spring 804 can also enable the patient to perceive the range within which they can move, thereby avoiding unnecessary excessive head movement.

[0055] An annular airbag 9 is provided inside the head fixing bracket 1. The annular airbag 9 is designed to fit patients with different head shapes to provide better fixing effect and comfort.

[0056] An extension part 11 is designed at the connection between the positioning airbag 6015 and the ventilation pipe 6013. The structure of the extension part 11 is as Figure 7 shown. The structure of the extension part 11 is trumpet-shaped. The connection part with the ventilation pipe 6013 is a narrow opening, and the connection part with the positioning airbag 6015 is a wide opening. The extension part 11 is designed to adaptively adjust the angle of the positioning airbag 6015. This design can not only adjust the angle of the airbag according to different usage requirements, but also effectively avoid the friction between the top of the positioning airbag 6015 and the bottom of the base 6011, thereby reducing wear and increasing the service life.

[0057] In the specific implementation process, two convex rings can be designed on the wall of the drainage tube 2 (as Figure 5 shown). This design is used to cooperate with the drainage tube fixing clip 7 and further achieve the fixing effect of the drainage tube 2. In addition, the part of the wall of the drainage tube 2 in contact with the positioning wheel 801 can be designed to be thickened to avoid pressing on the inside of the drainage tube 2 and improve the usage safety.

[0058] The working principle of the present invention is as follows:

[0059] When the craniocerebral postoperative drainage tube fixing device of this embodiment is in use, the operator first presets the positions of the drainage tube fixing member 601 and the head fixing member 602 according to the position of the patient's skull drilling, and inserts them into the corresponding mounting holes 5 for fixation. Subsequently, the head fixing bracket 1 is worn on the patient's head, and the annular airbag 9 inside is inflated to ensure that the airbag fits the patient's head shape to achieve preliminary fixation.

[0060] Next, place the drainage tube 2 in the recess 6016 of the positioning airbag 6015. Inflate the positioning airbag 6015 through the valve nozzle 6014. After the airbag expands, the arc-shaped bracket 6019 and the thickened part 6018 of the recess 6016 work together to disperse the pressure exerted by the airbag, effectively avoiding the deformation of the drainage tube 2. After inflation is completed, the positioning airbag 6015 firmly presses the drainage tube 2 against the surface of the patient's head.

[0061] The flared structure of the extension part 11 adjusts the angle of the positioning airbag 6015, reducing the friction between the top of the airbag and the bottom of the base 6011, ensuring that the airbag makes large-area contact with and closely fits the top of the patient's head. This design effectively improves stability, reduces the wear of the airbag caused by friction, and extends the service life.

[0062] After the airbag of the head fixing member 602 is inflated, it assists in positioning the top of the patient's head to ensure that the top of the patient's head maintains an appropriate distance from the first arc-shaped plate 3 and the second arc-shaped plate 4, avoiding direct contact. Then, the operator fixes the middle part of the drainage tube 2 through the clamping ring structure of the drainage tube fixing clip 7 to prevent the drainage tube 2 from slipping off.

[0063] When the patient moves, the positioning wheel 801 of the tension warning mechanism 8 rotates as the drainage tube 2 moves, and the telescopic change of the tension spring 804 is visually displayed through the displacement of the slider 802 and the outer shell 803. At this time, medical staff can understand the stress condition of the drainage tube 2 in a timely manner through the position change of the positioning wheel 801, and adjust the patient's head position or limit the range of their activities.

[0064] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a drainage tube after craniocerebral surgery, characterized in that: It includes a head fixing bracket (1) and a drainage tube (2). A first arc-shaped plate (3) and a second arc-shaped plate (4) are provided on the head fixing bracket (1). The first arc-shaped plate (3) and the second arc-shaped plate (4) are arranged in an interleaved manner and connected to each other. An installation hole (5) is provided at the connection of the first arc-shaped plate (3) and the second arc-shaped plate (4). A positioning component (6) is installed in the installation hole (5). A drainage tube fixing clip (7) is provided on the first arc-shaped plate (3) or the second arc-shaped plate (4).

2. The craniocerebral postoperative drainage tube fixing device according to claim 1, characterized in that: The positioning component (6) includes a drainage tube fixing member (601). The drainage tube fixing member (601) includes: A base (6011). The base (6011) is arranged in the installation hole (5). A through hole is provided inside the base (6011). A plurality of guide posts (6012) are provided on the end face of the base (6011). The guide posts (6012) are used to guide the base (6011) to move along the axial direction of the installation hole (5) and prevent the base (6011) from rotating; An air vent tube (6013). The air vent tube (6013) is fixed in the through hole of the base (6011). One end of the air vent tube (6013) is provided with a valve nozzle (6014), and the other end is provided with a positioning airbag (6015).

3. The craniocerebral postoperative drainage tube fixing device according to claim 2, characterized in that: A concave portion (6016) for accommodating the drainage tube (2) is provided on the surface of the positioning airbag (6015). The depth of the concave portion (6016) is less than the outer diameter of the drainage tube (2). The concave portion (6016) is in an arc shape and its size matches the tube wall of the drainage tube (2) so as to accommodate the drainage tube (2). When the positioning airbag (6015) is inflated, the positioning airbag (6015) exerts an extrusion force on the drainage tube (2) to make the drainage tube (2) fit and be fixed on the patient's head.

4. The craniocerebral postoperative drainage tube fixing device according to claim 3, characterized in that: The opening of the concave portion (6016) is in a shape with a larger outer side and a smaller inner side. Two edges of the opening of the concave portion (6016) are provided with arc transition regions (6017). The arc transition regions (6017) are used to reduce the contact stress between the outer wall of the drainage tube (2) and the edge of the concave portion (6016) and guide the drainage tube (2) to automatically align with the center line of the concave portion (6016).

5. A cranial postoperative drainage tube fixing device according to claim 3 or claim 4, characterized in that: The concave portion (6016) is provided with a thickened part (6018). An arc-shaped bracket (6019) is provided inside the thickened part (6018).

6. The craniocerebral postoperative drainage tube fixing device according to claim 1 or claim 2, characterized in that: The positioning component (6) includes a head fixing member (602).

7. The fixed device for a cranial postoperative drainage tube according to claim 1, wherein: A tensile warning mechanism (8) is provided on the tube wall of the drainage tube (2); The tensile warning mechanism (8) includes: A positioning wheel (801). The positioning wheel (801) is arranged on the drainage tube (2). A slider (802) is provided at the end of the positioning wheel (801); A housing (803). The housing (803) is arranged outside the slider (802) and is slidably connected to the slider (802); A tension spring (804). One end of the tension spring (804) is fixed on the inner wall of the housing (803), and the other end of the tension spring (804) is fixed on the slider (802).

8. The fixed device for a cranial postoperative drainage tube according to claim 1, characterized in that: An annular airbag (9) is provided inside the head fixing bracket (1), and the annular airbag (9) is used to adapt to patients with different head shapes.

9. The fixed device for a cranial postoperative drainage tube according to claim 2, characterized in that: Airbag sealing covers (10) are provided at the air inlet ends of the positioning airbag (6015) and the annular airbag (9).

10. The fixed device for a cranial postoperative drainage tube according to claim 2, wherein: An extension part (11) is designed at the connection between the positioning airbag (6015) and the ventilation pipe (6013), and the extension part (11) is used to adaptively adjust the angle of the positioning airbag (6015).

Images