Venous transfusion needle pulling and hemostasis fixing device with pressure regulating function

Abstract

The application discloses a venous transfusion needle pulling and hemostasis fixing device with pressure adjusting function, which comprises a shell main body, a pressurizing air bag and a pressure adjusting mechanism. The shell main body is provided with a first containing cavity, a first opening and a second opening, and the first opening and the second opening are both communicated with the first containing cavity and the external environment. The first opening is used for the head of a patient to pass through. The pressurizing air bag is contained in the first containing cavity and is abutted against the inner wall of the first containing cavity. The pressurizing air bag contains air inside. The pressure adjusting mechanism comprises a pressing block, a threaded connecting block and a threaded knob. The pressing block is abutted against the pressurizing air bag and is located on the inner side of the pressurizing air bag away from the shell main body. The pressing block is provided with a groove. The threaded connecting block is provided with a protrusion matched with the groove at one end and is provided with a first thread at the other end. The threaded knob is arranged in the second opening and is rotationally connected to the shell main body and is threadedly connected with the threaded connecting block. The problem that the pressing force of the hemostasis fixing device cannot be quantitatively adjusted is solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an intravenous infusion needle removal hemostasis fixation device with pressure regulation function. Background Technology

[0002] Intravenous infusion is one of the most common routes of drug administration in pediatric clinical practice, and scalp veins in children are the preferred site for infusion due to their superficiality, easy visibility, and relative fixed location. However, hemostasis after needle removal from scalp vein infusions has always been a challenge in clinical nursing. Unlike limb vein puncture in adults, scalp vein puncture in children presents with two bleeding points: the skin puncture site and the vessel wall puncture site. Furthermore, children's scalp tissue is thin, their blood vessel walls are highly elastic, and their coagulation mechanism is relatively immature. Improper pressure can easily lead to puncture site bleeding, subcutaneous ecchymosis, or even hematoma, which not only increases the child's suffering but also affects the success rate of subsequent punctures.

[0003] Currently, in clinical practice, after needle removal, nurses or parents often use cotton swabs or gauze to manually apply pressure to the puncture site to stop bleeding. However, this method faces many problems in actual operation. Infants and young children often cry and squirm violently due to fear during needle removal, making it difficult to accurately locate the pressure point and resulting in inconsistent pressure application, which cannot guarantee continuous and effective hemostasis. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an intravenous infusion needle removal hemostatic fixation device with pressure adjustment function, which solves the problem that the pressure of the hemostatic fixation device cannot be quantitatively adjusted.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A pressure-regulating intravenous infusion needle removal hemostasis and fixation device includes:

[0007] The shell body has a first receiving cavity, a first opening, and a second opening, both of which are connected to the first receiving cavity and the external environment; the first opening is for the patient's head to pass through.

[0008] A pressurized airbag is housed within the first receiving cavity and abuts against the inner wall of the first receiving cavity; the pressurized airbag contains air.

[0009] A pressure regulating mechanism includes a compression block, a threaded connecting block, and a threaded knob. The compression block abuts against the pressurized airbag and is located on the inner side of the pressurized airbag away from the shell body. The compression block has a groove, and one end of the threaded connecting block has a protrusion that mates with the groove, while the other end has a first thread. The threaded knob passes through a second opening and is rotatably connected to the shell body, and is threadedly connected to the threaded connecting block. When the threaded knob rotates, it drives the threaded connecting block to move closer to the pressurized airbag, thereby driving the compression block to compress the pressurized airbag. The pressurized airbag is used to compress the patient's head and to drive the compression block to retract closer to the threaded knob.

[0010] Furthermore, the shell body is provided with a pressure sensor and a pressure sensor display. The pressure sensor is located in the first accommodating cavity and is used to detect the real-time air pressure of the pressurized airbag. The pressure sensor display is electrically connected to the pressure sensor.

[0011] Furthermore, the shell body is provided with an inner membrane, which is disposed inside the first receiving cavity and spaced apart from the inner wall of the shell body, so as to divide the first receiving cavity into a second receiving cavity and a third receiving cavity. The pressurized airbag is housed in the second receiving cavity, and the third receiving cavity is used for the patient to wear it on their head.

[0012] Furthermore, the shell body is provided with an elastic tightening band, and the two ends of the elastic tightening band are respectively fixedly connected to the opposite sides of the first opening.

[0013] Furthermore, the compression surface area of ​​the compression block is smaller than the outer surface area of ​​the pressurized airbag.

[0014] Furthermore, the extrusion block is provided with a plurality of guide posts, which are pivotally connected to the shell body. The plurality of guide posts are located on the outer side of the extrusion block away from the third receiving cavity, and the plurality of guide posts are distributed at intervals along the extrusion direction perpendicular to the extrusion block.

[0015] Furthermore, the shell body is provided with multiple guide grooves, and each guide post is inserted into the corresponding guide groove. The guide groove is used to allow the guide post to move along the extrusion direction of the extrusion block.

[0016] Furthermore, the outer surface of the threaded knob is provided with multiple anti-slip textures, which are distributed at intervals along the circumference of the threaded knob.

[0017] Furthermore, the elastic tightening band is provided with a soft pad, which is installed on the elastic tightening band and away from the shell body, and the soft pad is used to abut against the chin of the face.

[0018] Furthermore, the cushion is made of medical-grade silicone.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The shell body has a first receiving cavity, a first opening, and a second opening, both of which connect the first receiving cavity to the external environment. The first opening is for the patient's head to pass through. The pressure airbag is housed in the first receiving cavity and abuts against the inner wall of the first receiving cavity. The pressure airbag contains air. The rigid or semi-rigid structure of the shell body provides a basic support frame for the patient's head, allowing the fixation device to be worn stably on the head. The pressure airbag, as the pressure medium that directly contacts the scalp, has flexible pressure transmission characteristics due to the pre-filled air inside. It can evenly convert the squeezing force into surface contact pressure on the scalp puncture point, avoiding local severe pain or tissue damage caused by direct pressure from rigid structures. At the same time, the size design of the first opening facilitates rapid insertion of the head, improving the efficiency of clinical operation.

[0021] 2. The pressure regulating mechanism includes a squeezing block, a threaded connecting block, and a threaded knob. The squeezing block abuts against the pressurized airbag and is located on the inner side of the airbag away from the main body. The squeezing block has a groove, and one end of the threaded connecting block has a protrusion that mates with the groove, while the other end has a first thread. The squeezing block abuts against the inner side of the pressurized airbag away from the main body, and the squeezing block forms a fitted movable connection with the protrusion of the threaded connecting block through the groove. This non-fixed coupling method formed by the groove and the protrusion allows the threaded connecting block to reliably push the squeezing block towards the pressurized airbag during rotation, and also allows the squeezing block to automatically retract under the guidance of the groove when the pressurized airbag deforms due to the reaction force of the head. This achieves dynamic adaptive adjustment of the pressure level of the pressurized airbag, avoiding excessive compression or sudden pressure changes, and improving the stability and safety of pressure regulation.

[0022] 3. A threaded knob is inserted through the second opening and rotatably connected to the shell body, and threadedly connected to a threaded connecting block. When the threaded knob rotates, it drives the threaded connecting block to move closer to the pressure bladder, which in turn drives the compression block to compress the pressure bladder. The pressure bladder compresses the patient's head and drives the compression block to retract closer to the threaded knob. This structure converts the rotational motion of the knob into the linear feed motion of the threaded connecting block. When the knob rotates forward, it drives the threaded connecting block to advance towards the pressure bladder, thereby compressing the pressure bladder through the compression block, increasing its internal air pressure and causing it to expand outward to compress the patient's head, achieving precise hemostasis and pressure application. When the knob rotates in the reverse direction, the threaded connecting block retracts, and the elastic restoring force of the pressure bladder itself and the counter-propulsion of the head tissue drive the compression block to retract towards the threaded knob, thus achieving rapid decompression and unloading. This bidirectional adjustment mechanism allows medical personnel to adjust the pressure intensity at any time according to the patient's scalp bleeding, age, or tolerance, improving the applicability and ease of operation of the hemostatic fixation device. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of a structural schematic diagram of an intravenous infusion needle removal hemostatic fixation device with pressure adjustment function according to the present invention.

[0024] Figure 2 for Figure 1 The diagram shown is a structural schematic.

[0025] Figure 3 for Figure 1 A partial enlarged view of point A in the structural schematic diagram shown;

[0026] Figure 4 for Figure 2 The diagram shown is a bottom view of the structure.

[0027] In the diagram: 1. Shell body; 101. First receiving cavity; 102. First opening; 103. Second opening; 2. Pressurized airbag; 201. Inner side of the airbag; 3. Pressure regulating mechanism; 301. Extrusion block; 302. Groove; 303. Threaded connecting block; 304. Protrusion; 305. First thread; 306. Threaded knob; 4. Pressure sensor; 5. Pressure sensor display; 6. Inner membrane; 601. Second receiving cavity; 602. Third receiving cavity; 7. Elastic tightening band; 8. Guide post; 9. Guide groove; 10. Anti-slip texture; 11. Soft pad. Detailed Implementation

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] See Figures 1-4A preferred embodiment of the present invention provides an intravenous infusion needle removal hemostasis and fixation device with pressure adjustment function, comprising: a shell body 1, a pressure bladder 2, and a pressure adjustment mechanism 3;

[0032] The shell body 1 has a first receiving cavity 101, a first opening 102 and a second opening 103. The first opening 102 and the second opening 103 are both connected to the first receiving cavity 101 and the external environment. The first opening 102 is used to allow the patient's head to pass through.

[0033] The pressurized airbag 2 is housed in the first receiving cavity 101 and is disposed in contact with the inner wall of the first receiving cavity 101. The pressurized airbag 2 contains air.

[0034] The pressure regulating mechanism 3 includes a compression block 301, a threaded connecting block 303, and a threaded knob 306. The compression block 301 abuts against the pressurized airbag 2 and is located on the inner side of the pressurized airbag 2 away from the shell body 1. The compression block 301 is provided with a groove 302. One end of the threaded connecting block 303 is provided with a protrusion 304 that cooperates with the groove 302, and the other end is provided with a first thread 305. The threaded knob 306 passes through the second opening 103 and is rotatably connected to the shell body 1, and is threadedly connected to the threaded connecting block 303. When the threaded knob 306 rotates and drives the threaded connecting block 303 to move closer to the pressurized airbag 2, it drives the compression block 301 to compress the pressurized airbag 2. The pressurized airbag is used to compress the patient's head and to drive the compression block 301 to retract closer to the threaded knob 306.

[0035] The working principle of the intravenous infusion needle removal hemostasis fixation device with pressure regulation function of the present invention is as follows: Medical staff put the shell body 1 on the patient's head through the first opening 102, so that the pressure airbag 2 is located near the scalp puncture point; rotate the threaded knob 306, which, through the thread engagement with the threaded connecting block 303, converts the rotational motion into linear propulsion. The protrusion 304 at the front end of the threaded connecting block 303, through the groove 302 of the compression block 301, pushes the compression block 301 to move inward to the shell body 1, thereby compressing the airbag 2, increasing the air pressure, and the pressure airbag 2 then applies controllable flexible pressure to the patient's scalp to achieve physical compression hemostasis; when decompression is required or the fixation is released after needle removal, rotate the threaded knob 306 in the opposite direction, the threaded connecting block 303 pulls back, and the pressure airbag 2, relying on its own elasticity and the reaction force of the head, drives the compression block 301 to retract towards the threaded knob 306, the airbag pressure decreases, and the pressure is released. The entire adjustment process is continuous and reversible, and is supported and fixed by the shell body 1, ensuring the stability of the pressure action and the accuracy of the positioning.

[0036] Obviously, the shell body 1 has a first receiving cavity 101, a first opening 102, and a second opening 103, both of which connect the first receiving cavity 101 to the external environment; the first opening 102 is used for the patient's head to pass through; the pressure airbag 2 is housed in the first receiving cavity 101 and abuts against the inner wall of the first receiving cavity 101, and the pressure airbag 2 contains air; the rigid or semi-rigid structure of the shell body 1 provides a basic support frame for the patient's head, allowing the fixation device to be worn stably on the head; the pressure airbag 2, as a pressure medium that directly contacts the scalp, has flexible pressure transmission characteristics due to the pre-filled air inside, which can evenly convert the squeezing force into surface contact pressure on the scalp puncture point, avoiding local severe pain or tissue damage caused by direct pressure from rigid structures. At the same time, the size design of the first opening 102 facilitates rapid insertion of the head, improving the efficiency of clinical operation.

[0037] The pressure regulating mechanism 3 includes a compression block 301, a threaded connecting block 303, and a threaded knob 306. The compression block 301 abuts against the pressurized airbag 2 and is located on the inner side of the pressurized airbag 2 away from the shell body 1. The compression block 301 is provided with a groove 302. One end of the threaded connecting block 303 is provided with a protrusion 304 that cooperates with the groove 302, and the other end is provided with a first thread 305. The compression block 301 abuts against the inner side 201 of the airbag, and the compression block 301 forms an interlocking movable connection with the protrusion 304 of the threaded connecting block 303 through the groove 302. The non-fixed coupling method formed by the groove 302 and the protrusion 304 allows the threaded connecting block 303 to reliably push the extrusion block 301 towards the pressurized airbag 2 during rotational advancement. At the same time, when the pressurized airbag 2 deforms due to the reaction force of the head, the extrusion block 301 is allowed to automatically retract under the guidance of the groove 302. This achieves dynamic adaptive adjustment of the extrusion degree of the pressurized airbag 2, avoids excessive extrusion or sudden pressure changes, and improves the stability and safety of pressure regulation.

[0038] The threaded knob 306 is inserted through the second opening 103 and rotatably connected to the shell body 1, and threadedly connected to the threaded connecting block 303. When the threaded knob 306 rotates, it drives the threaded connecting block 303 to move closer to the pressure bag 2, which in turn drives the compression block 301 to compress the pressure bag 2. The pressure bag is used to compress the patient's head and to drive the compression block 301 to retract closer to the threaded knob 306. This structure converts the rotational motion of the knob into the linear feed motion of the threaded connecting block 303. When the knob rotates forward, it drives the threaded connecting block 303 to advance towards the pressure bag 2, thereby compressing the pressure bag 2 through the compression block 301, increasing its internal air pressure and causing it to expand outward to compress the patient's head, achieving precise hemostasis and pressure application. When the knob rotates in the reverse direction, the threaded connecting block 303 retracts, and the elastic restoring force of the pressure bag 2 itself and the counter-pushing effect of the head tissue can drive the compression block 301 to retract towards the threaded knob 306, thereby achieving rapid decompression and unloading. This two-way adjustment mechanism allows medical staff to adjust the pressure at any time according to the patient's scalp bleeding, age, or tolerance, improving the applicability and ease of operation of the hemostatic fixation device.

[0039] More preferably, the shell body 1 is equipped with a pressure sensor 4 and a pressure sensor display 5. The pressure sensor 4 is located inside the first receiving cavity 101 and is used to detect the real-time air pressure of the pressurized airbag 2. The pressure sensor display 5 is electrically connected to the pressure sensor 4. By adding the pressure sensor 4 and the pressure sensor display 5, the pressure sensor 4 can detect the current air pressure value of the pressurized airbag 2 inside the first receiving cavity 101 in real time and transmit the signal to the pressure sensor display 5 for digital or pointer display. As a result, when medical personnel adjust the pressure by rotating the threaded knob 306, they can intuitively and quantitatively obtain the actual change in pressure inside the airbag, avoiding insufficient or excessive pressure caused by relying solely on feel or experience. This achieves visualization and precision in pressure adjustment, improving the scientific nature and safety of hemostasis operations.

[0040] More preferably, the shell body 1 is provided with an inner membrane 6, which is disposed inside the first receiving cavity 101 and spaced apart from the inner wall of the shell body 1, thereby dividing the first receiving cavity 101 into a second receiving cavity 601 and a third receiving cavity 602. The pressure airbag 2 is housed in the second receiving cavity 601, and the third receiving cavity 602 is used for wearing on the patient's head. By providing an inner membrane 6 spaced apart from the inner wall of the shell body 1, the first receiving cavity 101 is divided into a second receiving cavity 601 for housing the pressure airbag 2 and a third receiving cavity 602 for wearing on the head. This structure provides an inner membrane 6 between the pressure airbag 2 and the patient's scalp, which on the one hand prevents the pressure airbag 2 from directly rubbing against or sticking to the patient's hair or skin, improving wearing comfort; on the other hand, the inner membrane 6 can act as a buffer layer to evenly transmit pressure, making the pressure applied by the airbag more gently distributed on the scalp surface. At the same time, the independent space of the third receiving cavity 602 is also convenient for cleaning and disinfection, reducing the risk of cross-infection.

[0041] More preferably, the shell body 1 is provided with an elastic tightening strap 7, with both ends of the elastic tightening strap 7 fixedly connected to the opposite sides of the first opening 102. By providing the elastic tightening strap 7 on the opposite sides of the first opening 102 of the shell body 1, and fixing both ends to the edge of the opening, the shell body 1 can be more securely tightened to the patient's head using the tensile and retractive force of the elastic tightening strap 7. This prevents the shell body 1 from laterally slipping or tilting when the pressure balloon 2 is inflated, thereby ensuring that the pressure balloon 2 is always aligned with the scalp puncture point, avoiding hemostasis failure caused by the displacement of the fixator, and enhancing the overall reliability and anti-interference ability of the wearing device.

[0042] More preferably, the compression surface area of ​​the compression block 301 is smaller than the outer surface area of ​​the pressurized airbag 2. By limiting the compression surface area of ​​the compression block 301 to be smaller than the outer surface area of ​​the pressurized airbag 2, the pressure exerted by the compression block 301 on the pressurized airbag 2 is applied to a localized area of ​​the airbag, rather than uniformly compressing a large area of ​​the entire airbag. In this way, with the same knob feed amount, the locally compressed airbag will produce a more significant pressure increase, improving the sensitivity and efficiency of pressure adjustment. At the same time, it avoids the compression block 301 being too large and interfering with the fit between the inner membrane 6 and the head, ensuring a comfortable wearing space for the third receiving cavity 602.

[0043] More preferably, the extrusion block 301 is provided with multiple guide posts 8, which are pivotally connected to the shell body 1. The multiple guide posts 8 are located on the outer side of the extrusion block 301 away from the third receiving cavity 602, and are distributed at intervals along the extrusion direction perpendicular to the extrusion direction of the extrusion block 301. By providing multiple guide posts 8 on the outer side of the extrusion block 301 away from the third receiving cavity 602, and pivotally connecting them to the shell body 1, and distributing them at intervals perpendicular to the extrusion direction, this structure provides multi-point support and guiding constraints for the extrusion block 301. When the threaded connecting block 303 advances the extrusion block 301, the multiple guide posts 8 ensure that the extrusion block 301 moves smoothly in a straight line, preventing tilting or jamming of the extrusion block 301 due to uneven force on one side. This ensures that the extrusion of the pressurized airbag 2 is always uniform and directional, avoiding pressure deviation or excessive local folding of the airbag, and extending the service life of the airbag.

[0044] More preferably, the shell body 1 is provided with multiple guide grooves 9, and each guide post 8 is inserted into the corresponding guide groove 9. The guide groove 9 is used to allow the guide post 8 to move along the extrusion direction of the extrusion block 301. By providing multiple guide grooves 9 on the shell body 1 that correspond one-to-one with each guide post 8, and allowing the guide post 8 to slide along the extrusion direction while being inserted into the guide groove 9, the cooperation between the guide groove 9 and the guide post 8 forms a precise linear motion guide pair. This further restricts the swinging or rotation of the extrusion block 301 in the non-movement direction, and also allows the guide groove 9 to assist the extrusion block 301 in smooth retraction when the threaded knob 306 is rotated in the reverse direction, preventing the return stroke from being stuck due to air bag sticking or friction, and ensuring that the pressure increase and decrease process is always smooth and controllable.

[0045] More preferably, the outer surface of the threaded knob 306 is provided with multiple anti-slip grooves 10, which are distributed at intervals along the circumference of the threaded knob 306. By providing multiple circumferentially spaced anti-slip grooves 10 on the outer surface of the threaded knob 306, the coefficient of friction between the fingers of medical personnel and the knob is increased. In clinical operation, even if the hands are contaminated with medication, blood, or sweat, the anti-slip grooves 10 can effectively prevent slippage when turning, allowing for stable pressure adjustment with a single finger. This is especially convenient for quickly and accurately completing rotational movements in emergency or delicate operations, improving ergonomics and reliability.

[0046] More preferably, the elastic tightening band 7 is equipped with a soft pad 11, which is installed on the elastic tightening band 7 and away from the shell body 1. The soft pad 11 is used to abut against the chin of the face. By installing the soft pad 11 on the elastic tightening band 7 away from the shell body 1 and using the soft pad 11 to abut against the chin of the face, the tension of the elastic tightening band 7 is distributed to the mandibular region by utilizing the soft contact between the soft pad 11 and the chin, avoiding discomfort or pressure marks caused by the tightening band directly pressing on the facial soft tissue. At the same time, the chin, as a stable fulcrum for head support, can help position the shell body 1 in the front-back direction, preventing the fixator from slipping backward due to gravity or patient movement, thus enhancing the stability and comfort of wearing it.

[0047] More preferably, the soft pad 11 is made of medical-grade silicone. By specifying that the soft pad 11 is made of medical-grade silicone, and taking advantage of the good biocompatibility, non-toxicity, non-irritation, soft texture, and aging resistance of medical-grade silicone, the soft pad 11 is less likely to cause allergies or pressure sores when in long-term contact with the patient's chin skin. In addition, the surface of medical-grade silicone has a certain degree of stickiness, which can reduce the relative sliding between the soft pad 11 and the skin, further improving the stability and comfort of wearing it. At the same time, its easy cleaning and disinfection properties also meet the hygiene requirements of medical devices.

[0048] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pressure-regulating intravenous infusion needle removal hemostatic fixation device, characterized in that, include: The shell body has a first receiving cavity, a first opening, and a second opening, both of which are connected to the first receiving cavity and the external environment; the first opening is for the patient's head to pass through. A pressurized airbag is housed within the first receiving cavity and abuts against the inner wall of the first receiving cavity; the pressurized airbag contains air. A pressure regulating mechanism includes a compression block, a threaded connecting block, and a threaded knob. The compression block abuts against the pressurized airbag and is located on the inner side of the pressurized airbag away from the shell body. The compression block has a groove, and one end of the threaded connecting block has a protrusion that mates with the groove, while the other end has a first thread. The threaded knob passes through a second opening and is rotatably connected to the shell body, and is threadedly connected to the threaded connecting block. When the threaded knob rotates, it drives the threaded connecting block to move closer to the pressurized airbag, thereby driving the compression block to compress the pressurized airbag. The pressurized airbag is used to compress the patient's head and to drive the compression block to retract closer to the threaded knob.

2. The intravenous infusion needle removal hemostatic fixation device with pressure adjustment function according to claim 1, characterized in that, The shell body is equipped with a pressure sensor and a pressure sensor display. The pressure sensor is located in the first accommodating cavity and is used to detect the real-time air pressure of the pressurized airbag. The pressure sensor display is electrically connected to the pressure sensor.

3. The intravenous infusion needle removal hemostatic fixation device with pressure adjustment function according to claim 1, characterized in that, The shell body has an inner membrane, which is disposed inside the first receiving cavity and spaced apart from the inner wall of the shell body, so as to divide the first receiving cavity into a second receiving cavity and a third receiving cavity. The pressurized airbag is housed in the second receiving cavity, and the third receiving cavity is used for the patient to wear it on their head.

4. The intravenous infusion needle removal hemostatic fixation device with pressure adjustment function according to claim 1, characterized in that, The shell body is provided with an elastic tightening band, and the two ends of the elastic tightening band are respectively fixedly connected to the opposite sides of the first opening.

5. A pressure-adjustable intravenous infusion needle removal hemostatic fixation device according to claim 3, characterized in that, The compression surface area of ​​the compression block is smaller than the outer surface area of ​​the pressurized airbag.

6. The intravenous infusion needle removal hemostatic fixation device with pressure adjustment function according to claim 5, characterized in that, The extrusion block is provided with a plurality of guide posts, which are pivotally connected to the shell body. The plurality of guide posts are located on the outer side of the extrusion block away from the third receiving cavity, and are distributed at intervals along the extrusion direction perpendicular to the extrusion block.

7. A pressure-adjustable intravenous infusion needle removal hemostatic fixation device according to claim 6, characterized in that, The shell body is provided with multiple guide grooves, and each guide post is inserted into the corresponding guide groove. The guide groove is used to allow the guide post to move along the extrusion direction of the extrusion block.

8. The intravenous infusion needle removal hemostatic fixation device with pressure adjustment function according to claim 1, characterized in that, The outer surface of the threaded knob is provided with multiple anti-slip textures, which are distributed at intervals along the circumference of the threaded knob.

9. A pressure-regulating intravenous infusion needle removal hemostatic fixation device according to claim 4, characterized in that, The elastic tightening band is equipped with a soft pad, which is installed on the elastic tightening band and away from the shell body. The soft pad is used to abut against the chin of the face.

10. A pressure-regulating intravenous infusion needle removal hemostatic fixation device according to claim 9, characterized in that, The cushion is made of medical-grade silicone.

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