A disposable multi-site pulse oximetry monitoring probe

Abstract

The present invention discloses a disposable multi-site pulse oximetry monitoring probe, which includes elastic clip pieces, sliding blocks arranged on both sides of the elastic clip pieces, and pressure adjusting blocks arranged at the bottoms of the sliding blocks; the pressure adjusting blocks include a pressure adjusting block middle cavity arranged inside the pressure adjusting block, pressure adjusting block side cavities arranged on both sides of the pressure adjusting block middle cavity, two racks arranged oppositely inside the pressure adjusting block middle cavity and provided with pressing pieces at the bottoms, a gear arranged in the middle of the two racks and rotating to drive the two racks to slide in opposite directions, a pressing ring arc-shapedly adapted to the pressing piece, an elastic member connecting the pressing ring and the pressure adjusting block side cavity, a knob connected to the top of the gear, and an induction piece arranged on the outer side of the pressing ring. The disposable multi-site pulse oximetry monitoring probe of the present invention can be clamped and monitored at any tissue-free damage site on a patient's finger, toe, nasal septum, and earlobe.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a disposable multi-site pulse oximetry monitoring probe. Background Art

[0002] An oximetry monitoring probe is a commonly used medical device that is connected to the surface of the human body through a detector and applies a certain pressure to monitor the oxygen saturation and pulse rate in arterial blood.

[0003] The existing finger clip oximetry monitoring probe can only be clamped on the finger of the patient without tissue damage for monitoring. When the patient's finger is injured, monitoring cannot be performed. Limited by the clamping structure design of the ordinary finger clip oximetry monitoring probe, it is necessary to select a monitoring probe that can just be clamped to the root of the patient's finger according to the length of the patient's finger, and the clamping gap cannot be adjusted. For patients with large limbs, the clamping force generated by the probe on their fingers is large, and long-term clamping will cause poor blood circulation in the patient's fingers, local limb swelling and inflammation, affecting the monitoring accuracy, and it is necessary to regularly change to other fingers (when the finger lengths vary greatly, it is necessary to replace the new monitoring probe at the same time) for re-monitoring. For patients with slender limbs, the clamping is not tight, and the monitoring probe is prone to displacement and falling off during the monitoring process, resulting in inaccurate or invalid monitoring data. And when clamping at some injured positions, it will cause great pain to the patient.

[0004] The connecting wire of the ordinary finger clip oximetry monitoring probe is integrally a multi-core cable with a shielding layer. When monitoring patients with difficulty in independent movement (such as paralyzed patients, infants), if the connecting wire entangles the patient's limb, it will cause poor blood circulation in the limb and the patient. Due to the probe structure limitation, it is necessary to open the probe by external force to release the entanglement. Summary of the Invention

[0005] In order to solve the defects existing in the prior art, the present invention provides a disposable multi-site pulse oximetry monitoring probe that is convenient to clamp and the clamping position is adjustable.

[0006] The present invention first provides a disposable multi-site pulse oximetry monitoring probe, which includes elastic clip pieces, sliding blocks arranged on both sides of the elastic clip pieces, and pressure adjustment blocks arranged at the bottoms of the sliding blocks; the pressure adjustment blocks include a pressure adjustment block middle cavity arranged inside the pressure adjustment block, pressure adjustment block side cavities arranged on both sides of the pressure adjustment block middle cavity, two racks arranged oppositely inside the pressure adjustment block middle cavity and having pressing pieces at the bottoms, a gear arranged in the middle of the two racks and rotating to drive the two racks to slide in opposite directions, a pressing ring arc-shapedly adapted to the pressing piece, an elastic member connecting the pressing ring and the pressure adjustment block side cavity, a knob connected to the top of the gear, and an induction piece arranged outside the pressing ring; the pressing piece adjusts its position along the axial direction of the pressure adjustment block middle cavity, and the pressing ring presses the induction piece to contact the human body under the pressure of the pressing piece and monitor the human blood oxygen parameters; the clamping force when the elastic clip piece clamps the human body part is linearly related to the deformation amount of the elastic clip piece.

[0007] The elastic clip piece is preferably arranged as an arc-shaped elastic material, and preferably a silica gel sleeve made of transparent silica gel material is arranged on the outside of the pressure adjustment blocks at both ends of the clip block. An opening of a sliding block chute is arranged inside the sliding block, and the sliding block chute allows the elastic clip piece to slide inside the sliding block. The sliding block and the pressure adjustment block are preferably integrally formed. The sliding blocks are arranged on both sides of the elastic clip piece. The pressure adjustment block is preferably arranged such that an infrared light-emitting diode is arranged at one end and a photoelectric monitoring probe is arranged at the other end. Both the infrared light-emitting diode and the photoelectric monitoring probe are electrically connected to a data line. The data line is preferably arranged as a strip-shaped data line, which is attached to the outside of the pressure adjustment block, connected to the internal photoelectric monitoring probe, and connected to the main body part of the blood oxygen saturator at the other end.

[0008] The pressure adjustment block is preferably arranged such that one side is an outer arc on the inner side and the other side is an inner arc on the inner side, so that the arcs of the two pressure adjustment blocks are adapted, which is suitable for clamping some human body parts with arcs. The elastic clip piece is preferably arranged as a strip-shaped sheet, and a strip-shaped groove is arranged in the middle of the inner side of the elastic clip piece.

[0009] The present invention also provides the following optimization schemes:

[0010] Preferably, a plurality of the pressure adjustment block side cavities are arranged circumferentially along the center point of the gear.

[0011] Preferably, a plurality of the pressing rings are correspondingly arranged to be adapted to the pressure adjustment block side cavities.

[0012] Preferably, a plurality of the elastic members are arranged circumferentially along the circumference of the pressure adjustment block side cavity.

[0013] Preferably, a plurality of the pressing rings are arranged concentrically.

[0014] Preferably, a limiting plate is arranged outside the gear.

[0015] Preferably, the knob is connected to the gear through a knob connecting column penetrating through the limiting plate.

[0016] Preferably, a limiting hole is provided on the annular surface of the knob connecting column.

[0017] Preferably, it further includes a clamping block provided on the outer side surface of the pressure regulating block.

[0018] Preferably, an insertion strip of the clamping block is provided in the middle of the clamping block, corresponding to the position of the limiting hole and inserted therein.

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

[0020] 1. The disposable multi-site pulse oximetry monitoring probe of the present invention can be clamped and monitored at any tissue-free damage site on the patient's finger, toe, nasal septum, and earlobe.

[0021] 2. The disposable multi-site pulse oximetry monitoring probe of the present invention has no length limitation on the clamping part of the patient, the probe gap can be adjusted, and the clamping pressure can be controlled.

[0022] 3. The disposable multi-site pulse oximetry monitoring probe of the present invention adopts a flexible patch near the monitoring probe part, increasing the skin contact area and reducing the pressure on the limb, and the structural change makes it very easy for the patient or caregiver to remove it from the clamping part.

[0023] 4. The disposable multi-site pulse oximetry monitoring probe of the present invention is particularly suitable for the setting of a miniature disposable multi-site pulse oximetry monitoring probe. The pressing ring of the disposable multi-site pulse oximetry monitoring probe of the present invention is of an annular design, which can ensure a small contact surface during pressing and detect weak signals by using the signal amplification of annular detection at low blood oxygen signals.

[0024] 5. The disposable multi-site pulse oximetry monitoring probe of the present invention can be clamped on the ears and noses of the human body, and can also be clamped on the fingers and toes. It is suitable for some burn or bleeding patients, and is also suitable for blood oxygen detection of children. When clamping, the clamping force of the elastic clip can stably clamp, and will not cause discomfort to the human body. The touch feeling is not strong but the clamping is stable. The material is elastic, the contact feeling is good and the formation of blood stains in the later stage is reduced. The data of the infrared light-emitting diode and the photoelectric monitoring probe can be transmitted to the host of the blood oxygen saturation detector through the data line to realize data analysis and presentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the front view of the disposable multi-site pulse oximetry monitoring probe of the present invention;

[0026] Figure 2is the three-dimensional view of the disposable multi-site pulse oximetry monitoring probe of the present invention Figure 1 ;

[0027] Figure 3 is the three-dimensional view of the disposable multi-site pulse oximetry monitoring probe of the present invention Figure 2 ;

[0028] Figure 4 is the side perspective view of the disposable multi-site pulse oximetry monitoring probe of the present invention;

[0029] Figure 5 is the partial view of the pressure regulating block of the present invention;

[0030] Figure 6 is the three-dimensional view of the pressure regulating block of the present invention;

[0031] Figure 7 is the load-tensile strain diagram of the pressure regulating block of the present invention;

[0032] Specific reference numerals are as follows:

[0033] 1 Elastic clip; 2 Slide block; 3 Pressure regulating block; 4 Positioning block; 5 Infrared light-emitting diode; 6 Photoelectric monitoring probe; 21 Slide block chute; 31 Middle cavity of pressure regulating block; 32 Side cavity of pressure regulating block; 33 Pressing piece; 34 Rack; 35 Gear; 36 Pressing ring; 37 Elastic member; 38 Knob; 39 Inductive sheet; 310 Limiting plate; 311 Knob connecting column; 312 Limiting hole; 41 Positioning block insertion bar. Specific embodiments

[0034] In order to enable those skilled in the art to better understand the technical solution of the invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0035] As Figures 1-6As shown in the figure, the present invention first provides a disposable multi-site pulse oximetry monitoring probe, including an elastic clip 1, sliding blocks 2 arranged on both sides of the elastic clip 1, and a pressure adjustment block 3 arranged at the bottom of the sliding blocks 2; the pressure adjustment block 3 includes a pressure adjustment block middle cavity 31 arranged inside the pressure adjustment block 3, pressure adjustment block side cavities 32 arranged on both sides of the pressure adjustment block middle cavity 31, racks 34 arranged oppositely inside the pressure adjustment block middle cavity 31 and having pressing pieces 33 arranged at the bottom, a gear 35 arranged in the middle of the two racks 34 and rotating to drive the two racks 34 to slide in opposite directions, a pressing ring 36 arc-shapedly adapted to the pressing piece 33, an elastic member 37 connecting the pressing ring 36 and the pressure adjustment block side cavity 32, a knob 38 connected to the top of the gear 35, and an induction piece 39 arranged on the outer side of the pressing ring 36; the pressing piece 33 adjusts its position along the axial direction of the pressure adjustment block middle cavity 31, and the pressing ring 36 presses the induction piece 39 to contact the human body under the pressure of the pressing piece 33 and monitor the human blood oxygen parameters; the clamping force when the elastic clip 1 clamps the human body part is linearly related to the deformation amount of the elastic clip.

[0036] The elastic clip 1 is set as an arc-shaped elastic clip 1, and preferably has a silicone material with a better sense of contact with the human body on the inner side, and a rigid material with relatively better elasticity on the outer side. A sliding block chute 21 is arranged inside the sliding block 2 for the elastic clip 1 to slide in the sliding block chute 21, so that the clamping angle between the elastic clip 1 and the sliding block 2 can be adjusted. The pressure adjustment block 3 is directly connected to the sliding block 2. When the sliding block 2 slides on the elastic clip 1, it will drive the pressure adjustment block 3 to slide together. The clamping force is preferably between 0.2 N and 0.5 N, and the deformation amount reaches 100% when it reaches 0.5 N.

[0037] The elastic clip 1 is preferably set as an arc-shaped elastic material, and preferably a silicone sleeve made of transparent silicone material is arranged on the outer side of the pressure adjustment blocks 3 at both ends. An opening of the sliding block chute 21 is arranged inside the sliding block 2, and the sliding block chute 21 allows the elastic clip 1 to slide inside the sliding block 2. The sliding block 2 and the pressure adjustment block 3 are preferably integrally formed. The sliding blocks 2 are arranged on both sides of the elastic clip 1. The pressure adjustment block 3 is preferably set such that an infrared light-emitting diode 5 is arranged at one end and a photoelectric monitoring probe 6 is arranged at the other end. Both the infrared light-emitting diode 5 and the photoelectric monitoring probe 6 are electrically connected to a data line. The data line is preferably set as a ribbon-shaped data line, which is attached to the outer side of the pressure adjustment block 3, connects the internal photoelectric monitoring probe 6 and the infrared light-emitting diode 5, and is connected to the main body part of the blood oxygen saturator at the other end.

[0038] The pressure adjustment block 3 is preferably provided with an outer arc on one side and an inner arc on the other side, so that the arcs of the two pressure adjustment blocks 3 are adapted, which is suitable for clamping some human body parts with arcs. The elastic clip 1 is preferably provided in a strip shape, and a strip groove is provided in the middle of the inner side of the elastic clip 1.

[0039] The middle cavity 31 of the pressure adjustment block is preferably arranged along the center line of the pressure adjustment block 3, and preferably extends from the bottom surface to the top surface of the pressure adjustment block 3. The side cavities 32 of the pressure adjustment block are arranged on both sides of the middle cavity 31 of the pressure adjustment block. Different from the rectangular holes of the middle cavity 31 of the pressure adjustment block, the side cavities 32 of the pressure adjustment block are arranged in an annular shape along the center of the gear 35 and are arranged on both sides of the middle cavity 31 of the pressure adjustment block. The two racks 34 are arranged oppositely, and the gear 35 arranged in the middle drives the two racks 34 to slide in opposite directions correspondingly. The sliding speed and displacement length are both the same, so that the pressing pieces 33 respectively connected to the bottoms of the two racks 34 are symmetrically displaced in opposite directions with the gear 35 as the center and are mirror images. The widths and arcs of the pressing pieces 33 and the pressing ring 36 are all the same, so that the pressing accuracy is better when they are in position correspondence.

[0040] A plurality of the side cavities 32 of the pressure adjustment block are arranged circumferentially along the center point of the gear 35. A plurality of the pressing rings 36 are correspondingly arranged to fit the side cavities 32 of the pressure adjustment block. The pressing rings 36 are arranged corresponding to the side cavities 32 of the pressure adjustment block. The pressing rings 36 are integrally arranged at the bottoms of the side cavities 32 and the middle cavity 31 of the pressure adjustment block. At the position of the middle cavity 31 of the pressure adjustment block, they correspond to the pressing pieces 33, and at the position of the side cavities 32 of the pressure adjustment block, they correspond to the elastic members 37, so that the whole slides vertically along the pressing direction in the side cavities 32 and the middle cavity 31 of the pressure adjustment block.

[0041] A plurality of the elastic members 37 are arranged circumferentially along the side cavities 32 of the pressure adjustment block. The elastic members 37 are preferably provided as springs.

[0042] In a preferred embodiment, a plurality of the pressing rings 36 are arranged concentrically. The plurality of pressing rings 36 are arranged concentrically, so that when the position of the pressing piece 33 is adjusted, its width and arc can remain relatively consistent. And the concentric arrangement of the pressing rings 36 can optimize the detection signal, which is particularly suitable for small-area clamping, so that the signal can be more accurate.

[0043] A limiting plate 310 is arranged outside the gear 35. The knob 38 is connected to the gear 35 through a knob connecting column 311 passing through the limiting plate 310. The limiting plate 310 is mainly used to increase the clamping force in some places where it is easy to slip during the clamping position. When the knob 38 is internally pressed as a whole, the gear 35 and the rack 34 can be internally pressed together.

[0044] A limiting hole 312 is provided on the annular surface of the knob connecting post 311. Further included is a clamping block 4 provided on the outer side surface of the pressure regulating block 3. A clamping block insert 41 is provided in the middle of the clamping block 4, corresponding to the position of the limiting hole 312 and inserted therein. The limiting hole 312 and the clamping block insert 41 are adapted to each other, and their main function is to fix the internal pressure position of the knob 38 when the knob 38 is pressurized, which is convenient for fixation.

[0045] Experiment on the correlation between clamping force and deformation

[0046] The load and tensile strain of the elastic clip are experimentally detected. The test is carried out under the conditions of a thickness of 1.0 um, a width of 1.0 mm, and a tensile deformation speed of 5.0 mm / min, and the following results are obtained Figure 7 , from the figure we can know that when the tensile force is 0.25 N, the tensile strain is about 50%; when the tensile force is 0.5 N, the tensile strain is about 100%; when the tensile force is 0.75 N, the tensile strain is about 160%; when the tensile force is 1.0 N, the tensile strain is about 230; when the tensile force is 1.3 N, the tensile strain is about 300%. The overall load and tensile strain are highly linearly correlated. Therefore, the tensile strain of the elastic clip can be kept stable, and it can stably clamp at multiple monitoring points on the human body.

[0047] The above is only the preferred embodiment of the present invention. It should be noted that the above preferred embodiment should not be regarded as a limitation of the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. For those of ordinary skill in the art of this technology, without departing from the spirit and scope of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A disposable multi-site pulse oximetry monitoring probe, characterized in that, It includes elastic clamping pieces, sliding blocks arranged on both sides of the elastic clamping pieces, and pressure adjusting blocks arranged at the bottoms of the sliding blocks; the pressure adjusting blocks include a pressure adjusting block middle cavity arranged inside the pressure adjusting block, pressure adjusting block side cavities arranged on both sides of the pressure adjusting block middle cavity, two racks arranged oppositely inside the pressure adjusting block middle cavity and having pressing pieces arranged on the inner sides, a gear arranged between the two racks and rotating to drive the two racks to slide in opposite directions, a pressing ring arc-shapedly adapted to the pressing piece, an elastic member connecting the pressing ring and the pressure adjusting block side cavity, a knob connected to the outside of the gear, and an induction piece arranged on the outside of the pressing ring; the pressing piece adjusts its position along the axial direction of the pressure adjusting block middle cavity, and the pressing ring presses the induction piece to contact the human body under the pressure of the pressing piece and monitors the human body blood oxygen parameters; the clamping force when the elastic clamping piece clamps the human body part is linearly related to the deformation amount of the elastic clamping piece; the two racks are arranged oppositely, and the gear arranged in the middle drives the two racks to slide in the corresponding opposite directions, and the sliding speed and displacement length are both the same, so that the pressing pieces respectively connected to the bottoms of the two racks are symmetrically displaced in the opposite directions with the gear as the center and in a mirror image.

2. The disposable multi-site pulse oximetry monitoring probe according to claim 1, wherein A plurality of the pressure adjusting block side cavities are circumferentially arranged along the center point of the gear.

3. The disposable multi-site pulse oximetry monitoring probe according to claim 2, wherein, A plurality of the pressing rings are correspondingly arranged to be adapted to the pressure adjusting block side cavities.

4. The disposable multi-site pulse oximetry monitoring probe according to claim 3, wherein, A plurality of the elastic members are arranged circumferentially along the pressure adjusting block side cavity.

5. The disposable multi-site pulse oximetry monitoring probe according to claim 4, characterized in that, The plurality of pressing rings are concentrically arranged.

6. The disposable multi-site pulse oximetry monitoring probe according to claim 1, wherein A limiting plate is arranged on the outside of the gear.

7. The disposable multi-site pulse oximetry monitoring probe according to claim 6, wherein The knob is connected to the gear through a knob connecting column penetrating through the limiting plate.

8. The disposable multi-site pulse oximetry monitoring probe according to claim 7, wherein, Limiting holes are arranged on the circumferential surface of the knob connecting column.

9. The disposable multi-site pulse oximetry monitoring probe according to claim 8, characterized in that, It further includes a clamping block arranged on the outer side surface of the pressure adjusting block.

10. The disposable multi-site pulse oximetry monitoring probe according to claim 9, wherein, A clamping block insertion strip is arranged in the middle of the clamping block and corresponds to and is inserted into the limiting hole.

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