Skin preparation knife for sleep monitoring electroencephalogram lead

Abstract

The utility model relates to a skin preparation knife for sleep monitoring electroencephalogram lead, which comprises a knife handle comprising a knife handle main body and a connecting rod, one end of the knife handle main body is provided with a chute, and the connecting rod is arranged in the chute; the tool bit is arranged at the end of the connecting rod, and when the connecting rod retracts to make contact with the bottom of the sliding groove, a gap exists between the tool bit and the tool handle body, and an observation area is formed; the adjusting part is arranged on the knife handle body and matched with the connecting rod, and the adjusting part can be controlled to drive the connecting rod to move to extend outwards and retract inwards so as to adjust the range of the observation area. As the connecting rod can slide in the chute of the knife handle main body, the diameter of the connecting rod is smaller than that of the knife handle main body, the knife handle main body is connected with the knife head through the connecting rod with small diameter, the shielding area of the knife handle is reduced, and the influence of the knife handle on the visual field of a user is reduced; and the state of the skin preparation area can be observed more clearly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and more specifically to a skin preparation knife for sleep monitoring electroencephalogram leads. Background Art

[0002] Sleep monitoring EEG refers to recording the brain's electrical activity during sleep monitoring. Electrodes are placed on the scalp to measure and record the brain's electrical signals. The electrical signals reflect the neural activity of the cerebral cortex, thereby understanding the patient's sleep pattern, sleep cycle, sleep depth and sleep quality.

[0003] In the medical field, the impedance value of the EEG lead for sleep monitoring has a direct impact on the quality of the EEG signal. For patients with very dense hair, there is a tendency for looseness or air gaps to exist between the electrode and the scalp, resulting in a decrease in signal quality, and a small area of ​​skin preparation is required for the corresponding position of the patient. At present, small scissors are often used in clinical practice to perform small-scale local treatment of the child's hair. This method has two major problems: one is that it is easy to damage the skin, and the other is that the accuracy of the skin preparation range is poor, which can easily lead to insufficient skin preparation range and cannot completely solve the contact problem between the electrode and the scalp.

[0004] At the same time, some medical staff also use spare knives for skin preparation. The handle of a conventional skin preparation knife is usually an integrated columnar structure. In order to facilitate the user's grip, the handle needs to have a larger diameter. In actual use, since the movement of the knife head is achieved by pulling the handle, the handle will lie across the surface of the area where the knife head is going to slide, blocking the operator's field of vision, making it impossible for the operator to accurately observe the surface of the skin in that area, affecting the skin preparation effect and the accuracy of the skin preparation range. In addition, the length of the blade of a conventional back skin preparation knife is usually about 5 cm, which can easily cause discomfort to the patient due to excessive skin preparation range. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a skin preparation knife for sleep monitoring electroencephalogram leads, which solves the problem that the handle of the skin preparation knife easily blocks the operator's field of vision, affecting the skin preparation effect and the accuracy of the skin preparation range.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A skin preparation knife for sleep monitoring electroencephalogram leads is constructed, comprising:

[0008] The knife handle comprises a knife handle body and a connecting rod, wherein a slide groove is formed at one end of the knife handle body, and the connecting rod is installed in the slide groove;

[0009] A cutter head is arranged at the end of the connecting rod, and when the connecting rod is retracted to contact the bottom of the slide groove, there is a gap between the cutter head and the handle body, forming an observation area;

[0010] The adjusting member is arranged on the handle body and cooperates with the connecting rod. The adjusting member can be controlled to drive the connecting rod to move outward and retract inward to adjust the range of the observation area.

[0011] As an improvement of the skin preparation knife for sleep monitoring EEG leads, the adjustment member includes:

[0012] A rotating shaft is rotatably mounted on the end of the handle body, the rotating shaft has a threaded portion, the threaded portion is located in the slide groove, and the connecting rod has a threaded hole matched with the threaded portion;

[0013] An adjusting wheel is arranged at the outer end of the rotating shaft, and the rotating shaft can be rotated by the adjusting wheel to control the extension and retraction of the connecting rod.

[0014] As an improvement of the skin preparation knife for sleep monitoring EEG leads, a plurality of convex strips are arranged on the periphery of the adjustment wheel.

[0015] As an improvement of the skin preparation knife for sleep monitoring EEG leads, the cross-sections of the knife handle body and the connecting rod are both elliptical, the length direction of the cross-section of the knife handle body is horizontal, and the length direction of the cross-section of the connecting rod is vertical.

[0016] As an improvement of the skin preparation knife for sleep monitoring EEG leads, a damper is provided between the rotating shaft and the knife handle body.

[0017] As an improvement of the skin preparation knife used for sleep monitoring EEG leads, the knife head has a first removal portion and a second removal portion, and the knife head includes a first blade arranged on the first removal portion and a second blade arranged on the second removal portion, and the first removal portion is smaller than the second removal portion.

[0018] As an improvement of the skin preparation knife for sleep monitoring EEG leads, the length of the second removal portion is 1-2 cm.

[0019] As an improvement of the skin preparation knife for sleep monitoring EEG leads, at least one side of the outer wall of the connecting rod is recessed to form an escape portion, and the escape portion is close to the knife head.

[0020] As an improvement of the skin preparation knife for sleep monitoring EEG leads, the top of the knife head is a curved surface.

[0021] As an improvement of the skin preparation knife for sleep monitoring EEG leads, the knife head and the connecting rod are detachably connected.

[0022] The beneficial effects of the utility model are:

[0023] 1) The utility model subdivides the handle into a handle body and a connecting rod. Since the connecting rod can slide in the slide groove of the handle body, the diameter of the connecting rod is smaller than the diameter of the handle body. The handle body with a large diameter is used for the user to hold, and the handle body and the blade head are connected by the connecting rod with a small diameter, thereby reducing the shielding area of ​​the handle and the influence of the handle on the user's field of vision. Through the observation area, the user can see the state of the skin preparation area more clearly, ensuring that the skin will not be accidentally injured or the area to be treated will not be missed when preparing the skin for EEG leads.

[0024] 2) In addition, since the adjustment part can control the movement of the connecting rod, the user can adjust the size of the observation area and the length of the handle according to the actual needs such as the length of the patient's hair and the user's technique habits, which has high flexibility and enables the skin preparation knife to adapt to the scalp conditions and monitoring needs of different users. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 It is a top view of the utility model;

[0028] Figure 3 It is a cross-sectional view of the utility model;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the adjusting member of the utility model;

[0030] Figure 5 It is an exploded view of the connecting rod and the cutter head of the utility model;

[0031] Figure 6 It is a side view of the connecting rod and the handle body of the utility model.

[0032] In the figure: 1. handle body; 11. slide groove; 2. connecting rod; 21. threaded hole; 22. avoidance part; 3. cutter head; 31. first rejecting part; 32. second rejecting part; 33. first blade; 34. second blade; 4. adjusting member; 41. rotating shaft; 42. threaded part; 43. adjusting wheel; 44. convex strip; 5. observation area; DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0034] like Figure 1 and Figure 2 As shown, a skin preparation knife for sleep monitoring electroencephalogram leads includes a knife handle, a knife head 3 and an adjusting member 4. The knife handle includes a knife handle body 1 and a connecting rod 2. A slide groove 11 is opened on the right end surface of the knife handle body 1. The slide groove 11 is arranged along the length direction of the knife handle body 1, and the connecting rod 2 is installed in the slide groove 11; the knife head 3 is arranged at the right end portion of the connecting rod 2, and when the connecting rod 2 retracts to contact with the bottom of the slide groove 11, there is a gap between the knife head 3 and the knife handle body 1, forming an observation area 5; the adjusting member 4 is arranged on the knife handle body 1 and cooperates with the connecting rod 2. The connecting rod 2 can be driven to move to the right and extend and to the left and retract by controlling the adjusting member 4 to adjust the range of the observation area 5.

[0035] Specifically, the handle is subdivided into a handle body 1 and a connecting rod 2. Since the connecting rod 2 can slide in the slide groove 11 of the handle body 1, the diameter of the connecting rod 2 is smaller than the diameter of the handle body 1. The handle body 1 with a large diameter is used for the user to hold it. The handle body 1 and the cutter head 3 are connected by the connecting rod 2 with a small diameter, which reduces the shielding area of ​​the handle and reduces the influence of the handle on the user's field of vision. Through the observation area 5, the user can see the state of the skin preparation area more clearly, ensuring that the skin will not be accidentally injured or the area to be processed will not be missed when preparing the skin for EEG leads. Since the adjustment member 4 can control the movement of the connecting rod 2, the user can adjust the size of the observation area 5 and the length of the handle according to the actual needs such as the length of the patient's hair and the user's manipulation habits, which has high flexibility, so that the skin preparation knife can adapt to the scalp conditions and monitoring needs of different users. When the connecting rod 2 is fully retracted, the interval between the cutter head 3 and the handle body 1 can avoid accidental injury to the user during storage or carrying. At the same time, the control method of the adjustment member 4 also ensures that the user can accurately control the position of the cutter head 3 during use, further improving safety.

[0036] The structure of the skin preparation knife is simple and clear, and the operation is convenient. The user can easily adjust the size of the observation area 5 and the length of the knife handle by adjusting the adjusting member 4, without complicated operation steps or tools. This ease of use makes the skin preparation knife an ideal tool in the process of sleep monitoring EEG lead.

[0037] In some embodiments of the present application, Figure 3 and Figure 4 As shown, the adjusting member 4 includes a rotating shaft 41 and an adjusting wheel 43. The rotating shaft 41 can be rotatably mounted on the end of the handle body 1. The rotating shaft 41 has a threaded portion 42, and the threaded portion 42 is located in the slide groove 11. The connecting rod 2 has a threaded hole 21 that matches the threaded portion 42. The adjusting wheel 43 is arranged at the outer end of the rotating shaft 41, and the rotating shaft 41 can be rotated by the adjusting wheel 43 to control the extension and retraction of the connecting rod 2. Specifically, due to the precise matching of the threaded portion 42 and the threaded hole 21, the user can accurately control the extension and retraction length of the connecting rod 2 by rotating the adjusting wheel 43, thereby realizing the precise adjustment of the range of the observation area 5 and the length of the handle. The connecting rod 2 is connected to the rotating shaft 41 by threaded matching, which provides higher stability and reduces the shaking or offset that may occur during use. At the same time, with the setting of the adjusting wheel 43, the user can control the extension and retraction of the connecting rod 2 by rotation without using other tools or performing complicated operations.

[0038] In some embodiments of the present application, a plurality of ridges 44 are provided on the periphery of the adjustment wheel 43. Specifically, the provision of the ridges 44 increases the surface area of ​​the periphery of the adjustment wheel 43, thereby increasing the friction between the fingers and the adjustment wheel 43. The user can obtain better grip stability when rotating the adjustment wheel 43, and prevent adjustment errors caused by sliding or misoperation. In addition, the presence of the ridges 44 also provides the user with clearer tactile feedback. When the user rotates the adjustment wheel 43, the fingers can feel the rhythm brought by the ridges 44. This feedback helps the user to more accurately control the rotation speed and angle of the adjustment wheel 43.

[0039] In some embodiments of the present application, Figure 6 As shown, the cross sections of the handle body 1 and the connecting rod 2 are both elliptical, the length direction of the cross section of the handle body 1 is horizontal, and the length direction of the cross section of the connecting rod 2 is vertical.

[0040] Specifically, the elliptical design of the cross section of the handle body 1 makes the user's grip more stable, reducing safety accidents caused by sliding or misoperation; at the same time, the horizontal length direction of the cross section of the handle body 1 also makes the handle easier to hold and operate. Since the user's observation direction is from top to bottom when operating the spare knife, and the length direction of the cross section of the connecting rod 2 is vertical, it can further reduce the obstruction of the user's observation field of view. In conjunction with the handle body 1, it ensures the high stability of the user's grip while more accurately observing the skin preparation area and ensuring the accuracy of the skin preparation range to prevent the skin preparation range from being too large or too small. In addition, the elliptical design of the cross section of the connecting rod 2 makes it have higher rigidity during the connection process, and can better support and fix the connected blade head 3. The vertical length direction also makes the connecting rod 2 more stable when under pressure, reducing connection failure caused by deformation.

[0041] In some embodiments of the present application, a damper is provided between the rotating shaft 41 and the handle body 1. Specifically, the damper can absorb and disperse the vibration and impact generated by the rotating shaft 41 during the rotation process, thereby reducing the vibration and noise of the handle body 1 and improving the comfort of use. The existence of the damper makes the rotating shaft 41 more stable during the rotation process, reduces the operational errors or safety risks caused by the excessive rotation speed; and also prevents the adjustment wheel 43 from being easily rotated during use.

[0042] In some embodiments of the present application, Figure 5 As shown, the cutter head 3 has a first rejection part 31 and a second rejection part 32. The cutter head 3 includes a first blade 33 arranged at the first rejection part 31 and a second blade 34 arranged at the second rejection part 32. The first rejection part 31 is smaller than the second rejection part 32. Specifically, the first rejection part 31 and the second rejection part 32 are respectively distributed at the opposite ends of the cutter head 3. The first blade 33 can provide a more refined and accurate rejection effect for small-scale skin preparation; and the second blade 34 can ensure that the skin is thoroughly rejected in a large-scale skin preparation without leaving any dead corners. Due to the difference in size design between the first rejection part 31 and the second rejection part 32, it can flexibly adapt to skin preparation ranges of different sizes, and can obtain satisfactory results whether it is fine processing or large-scale rejection.

[0043] In some embodiments of the present application, the length of the second removal part 32 is 1-2 cm. Specifically, since the lengths of the first blade 33 and the second blade 34 match the sizes of the first removal part 31 and the second removal part 32 respectively; the first removal part 31 is set, because the first removal part 31 is small, the first blade 33 equipped therewith can remove fine hair or skin tissue more accurately, which is particularly suitable for areas with high requirements for details. The second removal part 32 is set to be used to process small-scale skin preparation. And the length of the second removal part 32 is set to 2 cm, so that the second removal part 32 has a certain flexibility while maintaining a certain removal efficiency, and can meet the needs of different small-scale skin preparations, further improve the accuracy of the skin preparation range, and avoid the skin preparation range being too small or too large after processing. When processing skin preparation, the second removal part 32 can be used for preliminary removal first, especially for areas with high requirements for details or relatively fine hair, and then the smaller first removal part 31 can be used for further processing. This progressive removal method ensures the comprehensiveness and meticulousness of skin preparation work. Alternatively, the first rejecting portion 31 or the second rejecting portion 32 of appropriate size can be used according to the actual skin preparation range to improve the flexibility of use. In other implementations, the length of the second rejecting portion 32 can be set to 1.1 cm, 1.2 cm, 1.3 cm, 1.4 cm, 1.5 cm, 1.6 cm, 1.7 cm, 1.8 cm or 1.9 cm.

[0044] In some other embodiments, the length of the first rejection portion 31 is 0.2-0.7 cm. Specifically, the length of the first rejection portion 31 can be set to 0.3 cm, 0.4 cm, 0.5 cm or 0.6 cm.

[0045] In some embodiments of the present application, the outer wall of the connecting rod 2 is partially recessed to form an escape portion 22, and the escape portion 22 is close to the cutter head 3. Specifically, there are two escape portions 22, which are respectively located on the upper and lower sides of the connecting rod 2. The recessed design of the outer wall of the connecting rod 2 forms the escape portion 22, which effectively utilizes the space of the connecting rod 2 and makes it more compact; the position of the escape portion 22 is close to the cutter head 3, which means that when the cutter head 3 performs a removal operation, the escape portion 22 provides it with sufficient operating space, avoiding interference with other components, and further reducing the blocking effect on the user's observation field of view.

[0046] In some embodiments of the present application, the top of the blade head 3 is a curved surface. Specifically, during the skin preparation process, the top of the blade head 3 will contact the patient's scalp. Setting the top of the blade head 3 as a curved surface can ensure comfort in contact with the patient's scalp.

[0047] In some embodiments of the present application, the cutter head 3 is detachably connected to the connecting rod 2. Specifically, in order to achieve the detachable connection, there is usually a matching interface design between the cutter head 3 and the connecting rod 2. These interfaces can be threads, bayonet, slot or other forms of connection mechanisms to ensure that the two can be tightly and stably connected together.

[0048] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A skin preparation knife for sleep monitoring electroencephalogram leads, characterized in that: include: The knife handle comprises a knife handle body and a connecting rod, wherein a slide groove is formed at one end of the knife handle body, and the connecting rod is installed in the slide groove; A cutter head is arranged at the end of the connecting rod, and when the connecting rod is retracted to contact the bottom of the slide groove, there is a gap between the cutter head and the handle body, forming an observation area; The adjusting member is arranged on the handle body and cooperates with the connecting rod. The adjusting member can be controlled to drive the connecting rod to move outward and retract inward to adjust the range of the observation area.

2. A skin preparation knife for sleep monitoring EEG leads according to claim 1, characterized in that: The adjusting member comprises: A rotating shaft is rotatably mounted on the end of the handle body, the rotating shaft has a threaded portion, the threaded portion is located in the slide groove, and the connecting rod has a threaded hole matched with the threaded portion; An adjusting wheel is arranged at the outer end of the rotating shaft, and the rotating shaft can be rotated by the adjusting wheel to control the extension and retraction of the connecting rod.

3. The skin preparation knife for sleep monitoring EEG leads according to claim 2, characterized in that: A plurality of convex strips are arranged on the outer periphery of the adjusting wheel.

4. The skin preparation knife for sleep monitoring EEG leads according to claim 3, characterized in that: The cross sections of the knife handle body and the connecting rod are both elliptical, the length direction of the cross section of the knife handle body is horizontal, and the length direction of the cross section of the connecting rod is vertical.

5. The skin preparation knife for sleep monitoring EEG leads according to claim 2, characterized in that: A damper is arranged between the rotating shaft and the handle body.

6. A skin preparation knife for sleep monitoring EEG leads according to any one of claims 1 to 5, characterized in that: The cutter head has a first rejecting portion and a second rejecting portion, and the cutter head includes a first blade arranged at the first rejecting portion and a second blade arranged at the second rejecting portion, and the first rejecting portion is smaller than the second rejecting portion.

7. The skin preparation knife for sleep monitoring EEG leads according to claim 6, characterized in that: The length of the second rejection portion is 1-2 cm.

8. The skin preparation knife for sleep monitoring EEG leads according to claim 7, characterized in that: At least one side of the outer wall of the connecting rod is recessed to form an escape portion, and the escape portion is close to the cutter head.

9. The skin preparation knife for sleep monitoring EEG leads according to claim 6, characterized in that: The top of the cutter head is a curved surface.

10. The skin preparation knife for sleep monitoring EEG leads according to claim 6, characterized in that: The cutter head and the connecting rod are detachably connected.

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