Blood oxygen saturation degree probe based on magnetic attraction piece and monitoring device
By using a magnetic clip design and a nail-fixing anchor point, the problem of easy detachment of the blood oxygen saturation probe is solved, achieving a stable connection and convenient operation, suitable for real-time monitoring of agitated patients.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI PROVINCIAL HOSPITAL
- Filing Date
- 2023-12-26
- Publication Date
- 2026-04-28
AI Technical Summary
Existing blood oxygen saturation probes are not stable enough during use and are prone to falling off, making real-time monitoring impossible, especially in agitated patients.
The device employs a magnetic attachment design, using the fingernail as a fixing point. Through the magnetic attraction between the inner positioning plate and the nail fixing plate, combined with the detachable left and right half-plate structure, it ensures a firm connection between the probe and the finger.
The probe has improved user comfort and stability, preventing it from falling off, and is easy and quick to operate and observe, making it suitable for the real-time monitoring needs of agitated patients.
Smart Images

Figure CN224166304U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and more specifically, to a blood oxygen saturation probe and monitoring device based on a magnetic absorbing sheet. Background Technology
[0002] Departments with a high number of critically ill patients and rapidly changing conditions need to monitor patients using pulse oximeter probes to effectively assist clinicians and nurses in assessing their conditions. Therefore, pulse oximeter probes play a very important role in patient monitoring. Common types of pulse oximeter probes include finger clips, finger sleeves, and wrap-around types.
[0003] Among them, the finger clip probe, as shown in patent publication number "CN201079393Y", generally consists of two hard plastic clips, a spring, and a soft silicone pad. The light-emitting and receiving elements are fixed in the silicone pads in the upper and lower clips, and the spring ensures that the finger is fixed in the sensor during use. The structure of the finger sleeve probe, as shown in patent publication number "CN201098122Y", uses a soft silicone sleeve for the finger to be inserted, and the light-emitting and receiving elements are fixed in the silicone sleeve. The structure of the wrap-around probe, as shown in patent publication number "CN301554262", has the light-emitting and receiving elements located inside the upper and lower silicone parts. After the upper and lower silicone parts are aligned, the finger is wrapped by the strap located on the lower silicone part, and then passed through the retaining ring on the upper silicone part. Tightening the strap achieves fixation.
[0004] However, in practical use, the above three types of probes share common problems: the blood oxygen saturation probe is not stable enough when placed on the finger and is easy to fall off. Whether it is a spring clip, a finger sleeve, or a wrap-around structure, the probe is not securely fixed because there is no additional positioning component inside the probe; for agitated patients, the probe often moves or even falls off due to external force, making it impossible to monitor blood oxygen saturation in real time; therefore, a blood oxygen saturation probe and monitoring device based on a magnetic absorbing sheet is proposed as a further improvement. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a blood oxygen saturation probe and monitoring device based on a magnetic absorbing sheet to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a blood oxygen saturation probe based on a magnetic absorbing sheet, comprising a finger sleeve for inserting into the finger to be monitored, wherein a nail fixing piece is fixedly installed on the inner wall of the finger sleeve, and an inner positioning piece is provided on the side of the nail fixing piece away from the inner wall of the finger sleeve.
[0007] The inner positioning piece includes: a positioning surface that contacts the nail fixing piece and an adhesive surface that contacts the fingernail of the finger to be tested, wherein the adhesive surface is adhered to the fingernail of the finger to be tested;
[0008] One side of the contact positioning surface of the fixing piece in part A is set as the fixing surface;
[0009] The fixed surface and the positioning surface are detachably connected.
[0010] Furthermore, the positioning surface is shaped as a wedge from the base of the finger to be monitored toward the fingertip; both the fixing surface and the positioning surface are made of magnets, and the magnetic poles of the fixing surface and the positioning surface are in phase.
[0011] Furthermore, the finger sleeve is divided into two hinged and mating left and right halves. The cross-sectional shape of the finger sleeve is elliptical. The left half includes an arc-shaped side plate, an upper horizontal plate, and a lower horizontal plate. The two ends of the arc-shaped side plate are fixedly connected to the upper and lower horizontal plates, respectively. The right half is mirror-symmetrical to the arc-shaped side plate. The axle fixing piece is fixedly installed on the upper horizontal plate.
[0012] Furthermore, the left and right halves are detachably connected by Velcro or snap fasteners.
[0013] Furthermore, both the fixing surface and the positioning surface are corrugated surfaces, and the corrugated grooves in the corrugated surface extend in a direction perpendicular to the direction in which the finger to be monitored is inserted into the finger sleeve.
[0014] Furthermore, the finger sleeve is made of a transparent material.
[0015] A monitoring device based on a magnetic pulse oximetry probe includes a display for showing pulse oximetry data, and the display is connected to the pulse oximetry probe wirelessly or via a retractable cable.
[0016] The technical effects and advantages of this utility model are as follows:
[0017] 1. Compared with existing technologies, this invention utilizes the nail, the least vulnerable part of the finger, by incorporating an inner positioning piece and a nail fixing piece, using the nail as a fixing anchor point to improve user comfort. The detachable connection between the nail fixing piece and the inner positioning piece uses magnetic attraction, avoiding loosening caused by frequent probe removal during blood oxygen monitoring and clinical observation, ensuring a secure fit. The interlocking structure with left and right halves allows for easy removal by simply opening the right half and pushing the left half along the parallel wedge-shaped magnetic contact surface, achieving a convenient and effortless removal. In clinical testing, this design also facilitates quick and easy examination of the nail area under pressure when a clinical visual assessment of the finger is required, significantly reducing the time and effort required for the nursing and examination process.
[0018] 2. Compared with existing technologies, by setting both the fixing surface and the positioning surface to be corrugated, on the one hand, the presence of corrugated grooves can quickly locate the insertion depth of the finger to be monitored by the finger sleeve; on the other hand, it also makes the force applied when directly pulling out the finger sleeve greater and makes it easier to slide out the left half plate laterally; and by making the finger sleeve transparent, it is even more convenient for clinical observation. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0020] Figure 2 This is a schematic diagram of the combined left and right halves of the present invention.
[0021] Figure 3 This is a schematic diagram of the internal positioning piece of this utility model.
[0022] The attached figures are labeled as follows:
[0023] 1. Finger cots;
[0024] 11. Left half board; 111. Curved side board; 112. Upper horizontal board; 113. Lower horizontal board; 12. Right half board;
[0025] 2. Fixing plate for part A; 21. Fixing surface;
[0026] 3. Inner positioning piece; 31. Positioning surface; 32. Adhesive surface;
[0027] a) The finger to be monitored; b) The fingernail. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0029] As attached Figure 1 Appendix Figure 2 and attached Figure 3 The illustrated blood oxygen saturation probe based on a magnetic absorbing plate includes a finger sleeve 1 for inserting into the finger a to be monitored. A nail fixing piece 2 is fixedly installed on the inner wall of the finger sleeve 1, and an inner positioning piece 3 is provided on the side of the nail fixing piece 2 away from the inner wall of the finger sleeve 1.
[0030] The inner positioning piece 3 includes: a positioning surface 31 that contacts the nail fixing piece 2 and an adhesive surface 32 that contacts the nail of the finger to be tested. The adhesive surface 32 is attached to the nail b of the finger to be tested a.
[0031] One side of the fixing plate 2 that contacts the positioning surface 31 is set as the fixing surface 21;
[0032] The fixed surface 21 and the positioning surface 31 are detachably connected.
[0033] An embodiment in which the fixing surface 21 and the positioning surface 31 are detachably connected:
[0034] The positioning surface 31 is shaped as a wedge from the base of the finger to be monitored towards the fingertip; both the fixing surface 21 and the positioning surface 31 are made of magnets, and the magnetic poles of the fixing surface 21 and the positioning surface 31 are opposite.
[0035] By using a wedge-shaped magnet, the positioning surface 31 of the inner positioning piece 3 and the fixing surface 21 of the fixing piece 2 of the axle are matched. The slope of the positioning surface 31 is the same as the slope of the fixing surface 21, so that the two can form a surface fit effect and achieve a magnetic fixation effect.
[0036] Example of finger sleeve 1:
[0037] The finger sleeve 1 is divided into two hinged and mating left half plate 11 and right half plate 12. The cross-sectional shape of the finger sleeve 1 is set to be elliptical. The left half plate 11 includes: an arc-shaped side plate 111, an upper horizontal plate 112 and a lower horizontal plate 113. The two ends of the arc-shaped side plate 111 are fixedly connected to the upper horizontal plate 112 and the lower horizontal plate 113 respectively. The right half plate 12 is mirror symmetrical to the arc-shaped side plate 111. The axle fixing piece 2 is fixedly installed at the upper horizontal plate 112.
[0038] The inner cavity of the finger sleeve 1 forms a fixed cavity into which the finger to be monitored (a) can be inserted and fixed. A light-emitting element and a receiving element are arranged in the fixed cavity. The light-emitting element is located at the upper horizontal plate 112 and its position avoids that of the positioning piece 3 inside the sleeve. The receiving element is located at the lower horizontal plate 113 and its sensing surface is opposite to the emitting surface of the light-emitting element. This is to achieve the effect of blood oxygen saturation monitoring.
[0039] In this way, by using fingernail b as an intermediate carrier, a firm fit between finger sleeve 1 and the patient's finger is achieved, thus avoiding both skin pressure damage and the possibility of finger sleeve 1 loosening or even falling off due to loose fit.
[0040] The shape of the finger sleeve 1 can be varied, and it can adopt a traditional finger clip or other sleeve structure.
[0041] An embodiment of the mating connection between the left half plate 11 and the right half plate 12:
[0042] The left half plate 11 and the right half plate 12 are detachably connected by Velcro or snaps.
[0043] Among them, the left half plate 11 and the right half plate 12 of the finger sleeve 1 are matched and fixed to each other and separated from each other by means of buckles or Velcro. The left half plate 11 and the right half plate 12 can be hinged to each other at the fingertip for easy operation.
[0044] An embodiment in which the fixing surface 21 and the positioning surface 31 are detachably connected:
[0045] Both the fixing surface 21 and the positioning surface 31 are corrugated surfaces, and the direction of the corrugated grooves in the corrugated surface is perpendicular to the direction in which the finger to be monitored is inserted into the finger sleeve 1; so as to use the corrugated surface to further improve the fit between the finger sleeve 1 and the finger to be monitored a.
[0046] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the material of finger sleeve 1 is set to transparent.
[0047] As attached Figure 1 Appendix Figure 2 and attached Figure 3 As shown, a monitoring device based on a magnetic pulse oximetry probe includes a display for showing pulse oximetry data. The display is connected to the pulse oximetry probe wirelessly or via a retractable cable to further improve the ease of operation of the entire monitoring device.
[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A blood oxygen saturation probe based on a magnetic swivel, comprising a finger sleeve (1) for inserting into the finger to be monitored, characterized in that: The inner wall of the finger sleeve (1) is fixedly installed with a nail fixing piece (2), and an inner positioning piece (3) is provided on the side of the nail fixing piece (2) away from the inner wall of the finger sleeve (1); The inner positioning piece (3) includes: a positioning surface (31) that contacts the nail fixing piece (2) and an adhesive surface (32) that contacts the fingernail to be tested. The adhesive surface (32) is attached to the fingernail to be tested. One side of the fixing plate (2) of the A part that contacts the positioning surface (31) is set as the fixing surface (21); The fixed surface (21) and the positioning surface (31) are detachably connected.
2. The blood oxygen saturation probe based on a magnetic absorbing sheet according to claim 1, characterized in that: The positioning surface (31) is shaped as a wedge from the base of the finger to be monitored toward the fingertip; both the fixing surface (21) and the positioning surface (31) are made of magnets, and the magnetic poles of the fixing surface (21) and the positioning surface (31) are opposite.
3. A blood oxygen saturation probe based on a magnetic absorbing sheet according to claim 2, characterized in that: The finger sleeve (1) is divided into two hinged and mating left half plate (11) and right half plate (12). The cross-sectional shape of the finger sleeve (1) is set to elliptical. The left half plate (11) includes: an arc-shaped side plate (111), an upper horizontal plate (112) and a lower horizontal plate (113). The two ends of the arc-shaped side plate (111) are fixedly connected to the upper horizontal plate (112) and the lower horizontal plate (113) respectively. The right half plate (12) is mirror-symmetrical to the arc-shaped side plate (111). The axle fixing piece (2) is fixedly installed at the upper horizontal plate (112).
4. A blood oxygen saturation probe based on a magnetic absorbing sheet according to claim 3, characterized in that: The left half plate (11) and the right half plate (12) are detachably connected by Velcro or snap fasteners.
5. A blood oxygen saturation probe based on a magnetic absorbing sheet according to claim 1, characterized in that: Both the fixed surface (21) and the positioning surface (31) are corrugated surfaces, and the corrugated grooves in the corrugated surface extend in a direction perpendicular to the direction in which the finger to be monitored is inserted into the finger sleeve (1).
6. A blood oxygen saturation probe based on a magnetic absorbing sheet according to claim 1, characterized in that: The material of the finger sleeve (1) is set to transparent.
7. A monitoring device based on a magnetically attached pulse oximeter probe, comprising a pulse oximeter probe based on a magnetically attached probe as described in any one of claims 1-6, characterized in that: It includes a display for showing blood oxygen saturation data, and the display is connected to the blood oxygen saturation probe wirelessly or via a retractable cable.
Citation Information
Patent Citations
Finger clipping type blood oxygen probe
CN201079393Y
Soft fingertip and soft fingertip blood oxygen probe made by the same
CN201098122Y