CN112729045B - Medical measuring tool adopting quantitative conversion mode - Google Patents

Abstract

The invention relates to a medical gauge adopting a quantitative conversion mode, which comprises a telescopic body formed by nesting a plurality of hollow sections, wherein each section is provided with an adjusting part for accommodating an ejection mechanism, and under the condition that an inner section slides along an outer section to exceed a sliding threshold value, the ejection mechanism moves along the radial direction of the section to be separated from the adjusting part so as to eject a fourth limiting body and a fifth limiting body of the ejection mechanism to push the inner section to be completely unfolded along the outer section, so that the inaccurate measurement caused by incomplete pushing/pulling of the sections is avoided.

Description

Medical measuring tool adopting quantitative conversion mode

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical measuring tool adopting a quantitative conversion mode.

Background

The indwelling gastric tube is inserted from the nostril, reaches the stomach through the pharynx and the esophagus, is a nursing technology widely applied clinically at present, and cannot meet the nutritional requirements of patients through oral feeding, or needs to be indwelling under the conditions of diagnosis, treatment and the like. The nasogastric tube is more commonly used in Intensive Care Units (ICU), the condition of the ICU patient changes rapidly, and the nasogastric tube is frequently switched among isochromatics such as gastrointestinal decompression, drug administration and nasal feeding nutrient solution. The gastrointestinal decompression is that the stomach tube is inserted into the stomach cavity from the nostril, and the gas and liquid accumulated in the gastrointestinal tract are sucked out of the body through the stomach tube according to the negative pressure mechanism. Flatulence can be relieved through gastrointestinal decompression, and pain of a patient is relieved; through the analysis of the content in the gastric absorption, the change of the state of an illness can be observed and found in time, and the diagnosis and treatment are facilitated. Research shows that when gastrointestinal decompression is carried out, the nasogastric tube is of a proper length that the distal end of the nasogastric tube reaches the antrum of the stomach, so that gastric juice can be fully drained, and clinical symptoms can be effectively relieved; the gastric juice can be effectively sucked out no matter what position the patient takes, and the gastric juice is not limited by the position; can avoid the phenomenon that the length of the indwelling gastric tube is too short to suck gastric juice or too deep to cause the gastric tube to be broken, thereby resulting in unsmooth drainage. When stomach intestine decompression pipe put a tub length short-term, the stomach tube top only stops in the cardia, and gastric juice flows more slowly and can appear being interrupted to the time is kept somewhere in the extension, if the stomach tube top reachs pylorus department then can increase each side opening of stomach tube and stomach body contact, increases the gastric juice drainage, shortens the time of keeping somewhere, alleviates the patient abdominal distension condition fast. The long length of the catheter can stimulate gastric mucosa, form circling, twisting and even knotting, and also influence the decompression effect.

Enteral Nutrition (EN) refers to the administration of more complete nutrients through the digestive tract. The enteral nutrition has the advantages and characteristics of strong physiological adaptability, good absorption effect, low treatment cost and the like, and becomes one of the main nutrition modes of a plurality of patients with severe diseases. Early enteral nutrition, one of the treatment strategies for ICU, can reduce the occurrence of infections and Acute Respiratory Distress Syndrome (ARDS), can reduce the severity of the disease, modulate the immune response, reduce complications, accelerate the improvement of the disease, reduce ICU and total hospital stay, and reduce the hospital stay of the patient. The American Society for intestinal and enteral Nutrition (ASPEN) recommends that enteral Nutrition should be preferred as long as gastrointestinal tract function is still present. The indwelling gastric tube for nasal feeding becomes an important way for patients with swallowing dysfunction to obtain enough nutrition, heat and medicines needed by treatment, and is the most convenient and effective enteral nutrition way. Proper placement (entry of both the gastric tube tip and side port into the stomach) is a prerequisite to ensure that the gastric tube is in place, and too short or too long a placement length can lead to serious complications. When nutrition in intestines is provided through the nasogastric tube, the top end and the side hole of the nasogastric tube are required to enter the stomach, and backflow of food can be obviously reduced. The short length of the nasogastric tube is placed, which can cause complications such as esophageal perforation, esophageal stenosis, pneumothorax, aspiration pneumonia and the like, the length of a patient with insufficient stomach tube length needs to be further deepened, the patient can suffer unnecessary risks and discomfort, a medical institution suffers unnecessary loss due to increased radiation expenditure, and the workload of nurses is increased. The overlength is put into to nasogastric tube can lead to the stomach tube to tie a knot or twine, and blindly extension nasogastric tube is put into length and is aroused the stomach tube and turn over easily, increases palirrhea, the bleeding of stomach mucous membrane, the heterotypic danger of stomach tube.

The method for predicting the nasogastric tube intubation length commonly adopted in the current clinical practice is the body surface distance (namely NEX, Nose-Earlobe-Xisupply) (45-55 cm) from the forehead hair line to the Xiphoid sternum or from the Nose tip to the Xiphoid sternum through the Earlobe. However, according to the publication [1] (Chen Y C, Wang L Y, Chang Y J, et al. positional Rice of major well Using Nose-Ear-Xipheid Measurement [ J ]. Plos One,2014,9 (2): e88046.), publication [2] (Taylor S J, Allan K, Mcwilliam H, et al. Nasogenic Tube depth: the 'NEX' guiding in-core [ J ]. Br J Nurs,2014,23 (12): 641 644 ], publication [3] (ElleM L, Beckland J, Fluecker J, et al. preceding dispersion for positioning [ J ]. J. (entry J.) (entry J.: 7, 9) for Research [ 11, 9 (11) for Research [ 14J ] (9) for testing J.: park J.: 7, 11. for testing [ 14, 11. for testing [ 11, 11. for testing [ 7,11 ],11), the phenomenon that the stomach tube is placed improperly is frequently caused by the fact that the stomach tube is placed at the distance, so that the risk that a patient suffers from reflux, aspiration or gastrointestinal decompression is unsmooth is increased.

Therefore, how to insert the nasogastric tube to meet the requirements of various treatments to the maximum extent can achieve the best drainage purpose of gastrointestinal decompression and the best requirement of enteral nutrition, and can reduce the complications of the gastric tube which can simultaneously play different roles of enteral nutrition and gastrointestinal decompression at the same tube-placing length to the maximum extent, and is worthy of further research and exploration. The Accuracy of the modified naso-auricular protrusion distance formula (naso-auricular protrusion distance 0.38696) +30.37+6cm in determining the length of an adult naso-gastric tube proposed by researchers such as Torsy was verified according to experimental studies in the document [5] Tim, T, Ren, S, Kurt, B, Ivo, D, Mats, E, Sofie, V, Dimitri, B, 2020, Accuracy of the corrected nose-ear-pathological distance for use in determining the length of a nasal-auricular protrusion, A pro-active object, INTJ NURS STUD (110). However, the condition of the ICU patient changes rapidly, and the nasogastric tube frequently switches among the gastric and intestinal decompression, administration, nasal feeding nutrient solution and other isochromatics, so that the length of the inserted tube may need to be changed and the inserted tube can be inserted rapidly for many times, therefore, the conversion of the tube length formula and the measurement of the length of the inserted nasogastric tube need to be converted and measured rapidly to facilitate medical staff, and meanwhile, the misoperation of the medical staff needs to be avoided as much as possible in the rapid measurement process to ensure the accuracy of the measurement.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention provides a medical gauge using quantitative transformation, which comprises a telescopic body formed by a plurality of hollow segments nested with each other. The segments are provided with an adjustment portion that accommodates an ejection mechanism. In the event that the inner segment slides along the outer segment beyond the sliding threshold, the ejection mechanism moves away from the adjustment portion in the radial direction of the segment to cause the fourth and fifth limiting bodies of the ejection mechanism to eject to push the inner segment to fully deploy along the outer segment, thereby avoiding inaccurate measurement of the segment due to incomplete pushing/pulling. Because stomach tube/nasogastric tube itself only provides limited scale, and its scale probably leads to the scale inaccurate owing to factors such as manufacturing, consequently medical personnel need confirm through the measuring tool and put into length, and stomach tube/nasogastric tube adopt soft materials such as silica gel, polyurethane to make, it is the state of convoluteing, medical personnel need stretch the flat with stomach tube/nasogastric tube and put out in order to measure, nevertheless to the stretch of stomach tube/nasogastric tube flat and measure and need two at least medical personnel to operate, complex operation and time spent are longer, and because stomach tube/nasogastric tube use elastic material preparation, make stomach tube/nasogastric tube produce deformation in tensile process, its length of measuring is inaccurate. The invention thus measures in a gastric/nasogastric tube-sheathed manner by means of a telescopic body consisting of a plurality of hollow segments nested inside one another. However, the condition of the patient with the ICU changes rapidly, the nasogastric tube frequently switches among the gastric-gastric decompression, drug administration, nasal feeding nutrient solution and other isochromatics to cause the patient to need rapid intubation, medical workers need to rapidly measure the nasogastric tube/nasogastric tube in the rapid intubation process, and in the measurement process by using the expansion of a plurality of hollow sections, the medical workers are very likely not to completely push or pull the sections, so that the medical measuring tool is not completely expanded, and further, the scales marked on the medical measuring tool are not actual lengths, so that the measured intubation length is inaccurate. According to the invention, the segments can be completely unfolded after moving for a certain distance through the ejection mechanism, so that inaccurate measurement caused by incomplete pushing/pulling of the segments is avoided.

According to a preferred embodiment, the ejection mechanism comprises at least a fourth stopper body, a fifth stopper body and a fifth resilient element. And the fifth elastic piece is respectively connected with the fourth limiting body and the fifth limiting body. In the event that the inner segment slides along the outer segment beyond a sliding threshold, the ejection mechanism is in a compressed state to be retained within the opening, and the fourth and fifth retention bodies and the adjustment portion abut against each other in a compressed state. In the event that the inner segment slides along the outer segment beyond a sliding threshold, the ejection mechanism moves in a radial direction of the segment out of the opening to cause the fourth and fifth spacing bodies to eject to push the inner segment to slide along the outer segment.

According to a preferred embodiment, a side of the fourth position-limiting body facing the adjusting portion is provided with a third slope section which abuts against a side wall of the opening of the adjusting portion so that the fourth position-limiting body moves to compress/restore the fifth elastic element. One side of the fifth limiting body facing the adjusting portion is provided with a fourth slope section which is abutted against the side wall of the opening of the adjusting portion so that the fifth limiting body moves to compress/recover the fifth elastic piece.

According to a preferred embodiment, the ejection mechanism is further provided with a third slot and a fourth resilient member. The fourth limiting body, the fifth limiting body and the fifth elastic piece are arranged in the third groove body. The fourth elastic piece is arranged between the segment and the groove body. The third channel is moved in the radial direction of the segment by the fourth elastic member. In a case where the third groove body moves in a radial direction of the segment, an axial direction of the third groove body is neither parallel nor perpendicular to an axial direction of the adjustment portion.

According to a preferred embodiment, the end of the segment in the sliding direction thereof is provided with at least one stopper portion capable of abutting against an adjustment portion in which the segment is nested to be in a compressed state. The limiting part can be abutted against the fourth limiting body and the fifth limiting body respectively. The limiting part is connected with at least one end part of the segment in the circumferential direction so that two end parts of the segment in the circumferential direction can be separated from each other and then relatively slide under the action force of the adjusting part towards the direction of the object to be measured, and therefore the segment which is nested in the state that the two segments slide relatively to each other can automatically cover the object to be measured through the relative sliding of the two end parts in the circumferential direction.

According to a preferred embodiment, the first and second ends of the segments in the circumferential direction are in abutment with each other. The first end is provided with a second groove body used for inserting the second end and a slideway used for connecting the limiting part with the first end/the second end and sliding along the side wall of the segment. Or the first end part and the second end part are mutually attached in a mode of sleeving the connecting piece, and the connecting piece is provided with a slideway for connecting the limiting part with the first end part/the second end part along the axial direction of the section. The limiting part can drive the connecting piece to move along the circumferential direction of the segments.

According to a preferred embodiment, the adjustment portion comprises at least a damping layer and a first elastic element between the segment and the damping layer. Two ends of the damping layer along the sliding direction of the segment form notches with the side walls of the segment respectively. The damping layer is provided with an opening for the ejection mechanism to move. And second convex parts for reducing friction are arranged at the abutting positions of the damping layer and the fourth limiting body and the fifth limiting body respectively.

According to a preferred embodiment, the stopper portion includes at least a first stopper provided at an end of the segment in the sliding direction. The first limiting part comprises a first limiting body, a first groove body and a second elastic part. The first limiting body is arranged in the first groove body. The first limiting body is connected with the side wall of the first groove body through the second elastic piece, so that the first limiting body is compressed by the adjusting portion to enter the first groove body and is ejected out of the first groove body along with the section sliding to the notch.

According to a preferred embodiment, a first slope section is arranged on one side of the first limiting body, which is abutted against the adjusting part, of the first limiting body. Under the condition that the inner side section slides along the outer side section, so that the first limiting body of the inner side section respectively passes through the two notches formed by the damping layer of the adjusting portion of the outer side section and the side wall of the outer side section, the first slope section of the inner side section is opposite to the damping layer in the notch on the side opposite to the sliding direction, so that the first slope section and the side wall of the outer side section at the notch are in a non-contact state, and the first limiting body and the side wall of the outer side section are mutually clamped to prevent the inner side section and the outer side section from being separated from each other. The first slope section of the inner section and the side wall of the outer section at the notch on one side of the sliding direction are opposite to each other, so that when the inner section slides to the notch, the first limiting body can abut against the side wall of the outer section at the notch to enter the first groove body so as to avoid blocking the inner section from sliding along the outer section.

According to a preferred embodiment, at least one recess is provided in the second slot of the first end portion. A second limiting body is arranged in the second end portion, and a first convex portion and a third limiting body which can enter the concave portion to be clamped with each other are arranged on one side, opposite to the concave portion, of the second limiting body. The third limiting body is used for abutting against the pushing portion of the first limiting body so as to drive the second end portion to slide relative to the first end portion under the sliding of the first limiting member.

Drawings

FIG. 1 is a telescoping view of a preferred embodiment of a medical gauge of the present invention;

FIG. 2 is a schematic view of the construction of a preferred embodiment of the medical gauge of the present invention;

FIG. 3 is a first state schematic diagram of a preferred embodiment of a medical gauge of the present invention;

FIG. 4 is a second state schematic diagram of a preferred embodiment of a medical gauge of the present invention;

FIG. 5 is a schematic structural view of a preferred embodiment of a segment of the present invention;

FIG. 6 is a schematic illustration of the configuration of the recesses within the segments of the present invention;

FIG. 7 is a schematic cross-sectional view of the present invention at a first stop;

fig. 8 is a schematic view of a measurement scale of a preferred embodiment of the medical gauge of the present invention.

List of reference numerals

100: first scale numerical value 200: second scale value

1: a body 11: segment 111: first segment

112: second segment 12: the limiting part 121: first position limiting part

122: second stopper 13: the adjusting portion 131: first elastic member

132: damping layer 1321: second pitch segment 1322: second convex part

1211: the first limiting body 1212: first groove 1213: second elastic member

12111: first slope section 12112: the pushing portion 113: first end part

114: second end 1131: the second slot 1132: slide way

1133: recess 1134: pedestal 1141: second position limiting body

1142: first projection 1143: third elastic member 1144: third position limiting body

2: the eject mechanism 21: fourth stopper body 22: the fifth limiting body

23: third groove 24: fourth elastic member 25: fifth elastic member

211: third slope section 221: fourth slope section

Detailed Description

The following detailed description is made with reference to fig. 1 to 8.

Example 1

A gastric Tube (Nasogastric Tube) is a Tube that helps patients who cannot swallow deliver the necessary moisture and food under special circumstances. The stomach tube is generally made of polyurethane or silica gel material. Polyurethane and silica gel stomach tubes should be changed once a month according to the material. The thickness and the length are different specifications. The gastric tube includes an orogastric tube and a nasogastric tube. The length of the oral gastric tube is about 45Cm, and the oral gastric tube can be inserted into the oral gastric tube by 35-40 Cm. The nasogastric tube is about 105Cm long, and about 55Cm is inserted through the nostril, passes through the pharynx, and reaches the stomach through the esophagus. However, most nasogastric tubes currently have limited scales. For example, the total length of the nasogastric tube is 120cm, 4 scales are marked on the nasogastric tube, and the first scale is 45cm, which indicates that the nasogastric tube reaches the cardia. The second scale, 55cm, indicates that the nasogastric tube is entering the stomach. The third scale, 65cm, indicates that the nasogastric tube entered the pylorus. The fourth scale, 75cm, indicates that the nasogastric tube enters the duodenum. Therefore, on one hand, the number of scales marked on the nasogastric tube is limited, and the length of the nasogastric tube cannot be accurately determined under the condition that the implantation length does not belong to the marked scales. On the other hand, even mark a plurality of scales, because the difference of manufacturing, not only can't guarantee the accuracy of nasogastric tube mark scale numerical value, the side opening of different nasogastric tubes is different with the distance on top moreover, consequently can't guarantee the accuracy of putting into length through the scale numerical value of nasogastric tube mark itself.

For the above reasons, in the insertion operation of a nasogastric tube, particularly in the clinical treatment of nasogastric tube insertion in an ICU ward, the length of the nasogastric tube to be inserted is generally measured by a measuring tool, and the method for determining the insertion length has fewer and simple steps and is easier to operate than the above method. However, the following problems are found in the actual tube placing operation of the nursing staff:

1. because the nasogastric tube is made of polyurethane material or silica gel, the nasogastric tube is made of soft material, and the whole length of the nasogastric tube is about 1m, when medical staff determine the estimated insertion length of the nasogastric tube, the originally bent nasogastric tube needs to be straightened for measurement, but the nasogastric tube is straightened and the measurement is not suitable for single-person operation;

2. straightening a nasogastric tube may cause the nasogastric tube to be stretched, and may not meet the requirements for centimeter-level accuracy;

3. after the measurement, the nasogastric tube needs to be marked, new pollution is possibly brought by the mark, and the nasogastric tube needs to be disinfected again after the measurement is completed.

For the above reasons, it is desirable to accurately measure and mark the length of the gastric tube placement in a manner that does not interfere with gastric tube placement. The working principle of the invention is as follows: the telescopic body 1 is constructed by nesting a plurality of segments 11 into one another, as shown in fig. 1. In the measurement, a nasogastric tube passes through the body 1. When body 1 is deployed, the plurality of segments 11 slide relative to each other to elongate, thereby flattening the nasogastric tube to facilitate measurement of the length of the nasogastric tube. Meanwhile, after the length of the catheter is determined by the body 1, the body 1 can be retracted to restore the original state, and then marking is performed. For example, after the insertion length is determined at the proximal end of the nasogastric tube, i.e. the end close to the adapter, the segment 11 of the body 1 is slid to the proximal side from the top end of the nasogastric tube, so that the body 1 starts to be shortened and finally returns to the state that the initial length is only the length of the segment 11, thereby marking the length of the nasogastric tube to be inserted for the medical staff. However, the condition of the patient with the ICU changes rapidly, the nasogastric tube frequently switches among the gastric-gastric decompression, drug administration, nasal feeding nutrient solution and other isochromatics to cause the patient to need rapid intubation, medical staff need to rapidly measure the nasogastric tube/nasogastric tube in the rapid intubation process, and in the measurement process by using the expansion of the plurality of hollow sections 11, the medical staff is very likely not to completely push or pull the sections 11 to cause the medical measuring tool to be not completely expanded, and further, the scale marked on the medical measuring tool is not the actual length, so that the measured intubation length is inaccurate. Based on the problem, the invention enables the segment 11 to be completely unfolded after moving for a certain distance through the ejection mechanism 2, thereby avoiding inaccurate measurement caused by incomplete pushing/pulling of the segment.

The present embodiment provides a medical gauge using a quantitative conversion method, which includes a telescopic body 1 formed by nesting a plurality of hollow segments 11. The segment 11 is provided with an adjustment 13 accommodating the ejection mechanism 2. In the event that the inner segment 11 slides along the outer segment 11 beyond the sliding threshold, the ejection mechanism 2 moves in the radial direction of the segment 11 out of the adjustment portion 13 and causes the fourth and fifth spacing bodies 21, 22 of the ejection mechanism 2 to eject to push the inner segment 11 to be fully deployed along the outer segment 11, thereby avoiding the segment 11 from causing measurement inaccuracies due to pushing/pulling incompleteness.

Preferably, the ejection mechanism 2 includes at least a fourth stopper body 21, a fifth stopper body 22, and a fifth elastic member 25, as shown in fig. 2. The fifth elastic member 25 is connected to the fourth stopper body 21 and the fifth stopper body 22, respectively. In the event that the inner segment 11 slides along the outer segment 11 beyond the sliding threshold, the ejection mechanism 2 is in a compressed state, being trapped in the opening, and the fourth and fifth trapping bodies 21, 22 and the adjustment portion 13 abut against each other in the compressed state. In the event that the inner segment 11 slides along the outer segment 11 beyond the sliding threshold, the ejection mechanism 2 is moved in the radial direction of the segment 11 out of the opening and causes the fourth and fifth spacing bodies 21, 22 to eject to push the inner segment 11 to slide along the outer segment 11. Preferably, the sliding threshold is set according to the sizes of the third groove body 23, the fourth stopper body 21 and the fifth stopper body 22. Preferably, the threshold of slippage of the present invention is that the segment 11 slips more than 2.5 cm.

Preferably, a side of the fourth position-limiting body 21 facing the adjusting portion 13 is provided with a third inclined section 211 which abuts against a side wall of the opening of the adjusting portion 13 so that the fourth position-limiting body 21 moves to compress/restore the fifth elastic element 25. A side of the fifth stopper body 22 facing the adjustment portion 13 is provided with a fourth slope section 221 which abuts against a side wall of the opening of the adjustment portion 13 so that the fifth stopper body 22 moves to compress/restore the fifth elastic member 25. Preferably, the adjustment portion 13 comprises at least a damping layer 132 and a first elastic member 131 between the segment 11 and the damping layer 132. Both ends of the damping layer 132 in the sliding direction of the segment 11 form notches with the side walls of the segment 11, respectively. The damping layer 132 is provided with an opening for movement of the ejection mechanism 2. Second protrusions 1322 for reducing friction are provided at the abutting portions of the damping layer 132 with the fourth stopper body 21 and the fifth stopper body 22, respectively. Preferably, the second projection 1322 is provided at a portion of the damping layer 132 of the adjustment portion 13, which is in contact with the fourth stopper body 21 and the fifth stopper body 22. Through this mode of setting, can avoid third inclination section 211 and fourth inclination section 221 and damping layer 132's corner to produce too big frictional force when fourth spacing body 21 and fifth spacing body 22 slide along damping layer 132, and then be favorable to third cell body 23 to remove in the opening of regulating part 13.

Preferably, the eject mechanism 2 is further provided with a third groove 23 and a fourth elastic member 24. The fourth position-limiting body 21, the fifth position-limiting body 22 and the fifth elastic element 25 are arranged in the third groove 23. The fourth elastic member 24 is disposed between the segment 11 and the groove 23. The third groove 23 is moved in the radial direction of the segment 11 by the fourth elastic member 24. In the case where the third slot 23 is moved in the radial direction of the segment 11, the axial direction of the third slot 23 is neither parallel nor perpendicular to the axial direction of the adjustment portion 13. With this arrangement, when the pop-up mechanism 2 slides on the inner section 11 beyond the sliding threshold, the pop-up mechanism 2 can move in the radial direction of the inner section 11 and can be ejected smoothly when the pop-up mechanism is disengaged from the opening, and the fourth stopper body 21 and the fifth stopper body 22 can be ejected smoothly. Meanwhile, when the inner segment 11 is retracted, the fourth stopper body 21 and the fifth stopper body 22 of the pop-up mechanism 2 can move along the opening of the damping layer 132 into the third groove body 23 so that the pop-up mechanism 2 is restored into the opening. The specific process is as follows,

as shown in fig. 2, the upper and lower segments 11 of fig. 2 show two states in which the eject mechanism 2 is fully ejected and fully compressed into the opening of the regulating portion 13. For convenience of description, the inner segment 11 is described as the second segment 112. The outer segment 11 is denoted as a first segment 111. Figure 3 shows a first state in which the second segment 112 is slid downwards so that the fourth and fifth spacing bodies 21, 22 are moved relative to each other. As shown in fig. 3, when the second segment 112 moves downward, the fourth position-limiting body 21 and the fifth position-limiting body 22 of the pop-up mechanism 2 are compressed, and when the fifth elastic element 25 between the fourth position-limiting body 21 and the fifth position-limiting body 22 is compressed to a certain extent, it will not deform, and further, the third groove 23 is driven to move downward. As shown in fig. 4, when the second segment 112 continues to slide downward, the fourth stopper 21 is pressed to move toward the inner wall of the first segment 111, and further drives the third groove 23 to move toward the inner wall of the first segment 111, and when the second segment 112 continues to move downward, the fourth inclined section 221 of the fifth stopper 22 retracts into the third groove 23 under the action of the second projection 1322, so that the pop-up mechanism 2 retracts into the opening of the adjustment portion 13 completely.

Through the arrangement mode, the medical measuring tool of the embodiment can be completely unfolded when being stretched, so that the problem of inaccurate measurement caused by incomplete pushing/pulling of the segments 11 is avoided.

Preferably, the end of the segment 11 in its sliding direction is provided with at least one stopper portion 12 capable of abutting against an adjustment portion 13 that nests the segment 11 to be in a compressed state. The stopper portion 12 can abut against the fourth stopper body 21 and the fifth stopper body 22, respectively. The stopper portion 12 is connected to at least one end portion of the segment 11 in the circumferential direction so as to be able to separate both end portions of the segment 11 in the circumferential direction from each other and slide relative to each other under the urging force of the adjusting portion 13 toward the direction of the object to be measured, so that the segment 11 nested in a state where the two segments 11 slide relative to each other automatically covers the object to be measured by the relative sliding of both end portions in the circumferential direction. Preferably, because the nasogastric tube is made of materials such as silica gel and polyurethane, the nasogastric tube can be elongated during stretching, and further measurement is inaccurate. In order to avoid medical personnel to stretch the nasogastric tube when measuring, make when section 11 slides through above setting up mode, the space size that encloses of section 11 can change, and then the surface of automatic cladding laminating nasogastric tube to can be with crooked nasogastric tube exhibition flat, and can not produce tensile effort to nasogastric tube.

Preferably, the first end 113 and the second end 114 of the segment 11 in the circumferential direction are attached to each other. As shown in fig. 5, the first end portion 113 is provided with a second groove 1131 for insertion of the second end portion 114. The first end 114 is also provided with a chute 1132. The slideway 1132 connects the position-limiting part 12 with the first end 113/the second end 114. The ramps 1132 also allow the stop 12 to slide along the side walls of the segment 11. Preferably, the segments 11 may be circular. Preferably, the segments 11 may be made of an elastic material. Such as rubber, silicone, polyurethane, etc.

Preferably, at least one recess 1133 is provided in the second channel 1131 of the first end portion 113, as shown in fig. 6. The first end 113 is also provided with a pedestal 1134. The pedestal 1134 is provided with a recess 1133. As shown in FIG. 7, a second spacing body 1141 is disposed in the second end portion 114. The second stopper 1141 has a first projection 1142 that can enter the recess 1133 to engage with the recess 1133 on the side facing the recess 1133. The second end portion 114 is further provided therein with a third position-limiting body 1144 connected to the second position-limiting body 1141. Preferably, the third position-limiting body 1144 is configured to abut against the pushing portion 12112 of the first position-limiting body 1211 to drive the second end portion 114 to slide relative to the first end portion 113 under the sliding of the first position-limiting member 121. With this arrangement, when first tab 1142 enters recess 1133, first end 113 and second end 114 snap-lock to one another such that first end 113 and second end 114 are secured to one another. When the first stopper 1211 of the adjusting portion 12 is compressed into the first groove 1212, the pushing portion 12112 connected to the first stopper 1211 pushes the second stopper 1141 to move toward one side of the object to be tested, so that the first protrusion 1142 is separated from the recess 1133, and the first end portion 113 and the second end portion 114 are unlocked from each other, and the first end portion 113 and the second end portion 114 can slide relative to each other under the action of the adjusting portion 13, so as to change the size of the space enclosed by the segments 11, and further fit the object to be tested. Preferably, the third position-limiting body 1144 can be connected to the side wall of the second end portion 114 via a third elastic element 1143. With this arrangement, after the third stopper 1144 is pushed by the pushing portion 12112, it can be reset after the force disappears.

Preferably, another embodiment may be that the first end portion 113 and the second end portion 114 are attached to each other in a manner of being sleeved on the connecting member. The connecting member is provided with a slideway 1132 for connecting the limiting part 12 with the first end part 113/the second end part 114 along the axial direction of the segment 11, and the limiting part 12 can drive the connecting member to move along the circumferential direction of the segment 11.

Preferably, the adjusting part 13 includes at least a damping layer 132 and a first elastic member 131. As shown in fig. 2 to 4, the first elastic member 132 is located between the segment 11 and the damping layer 132. Both ends of the damping layer 132 in the sliding direction of the segment 11 are notched with the side walls of the segment 11, respectively, as shown in fig. 2. Preferably, the adjustment portions 13 may be provided on the inner wall of the segment 11 in a spaced manner from each other. Preferably, the side walls of the damping layer 132 at the gap may be non-perpendicular to the segment 11. For example, as shown in FIG. 2, the side wall of the gap of the damping layer 132 is a second sloped section 1321. The second sloped section 1321 and the axially directed side wall of the segment 11 are non-perpendicular to each other. Preferably, the second sloped section 1321 is non-perpendicular to the radially directed side wall of the segment 11. With this arrangement, when the position-limiting portion 12 moves to the notch, the first position-limiting body 1211 is in a non-compressed state, and the position-limiting portion 12 can be engaged with the notch, thereby preventing the segment 11 from slipping. In addition, the first elastic member 132 can enable the damping portion 122 to be tightly attached to the outer wall of the segment 11, so that the friction force generated by the damping portion 132 on the outer wall is kept, the segment 11 is prevented from sliding out, meanwhile, the friction force also provides supporting force for the medical measuring tool during unfolding, the medical measuring tool is prevented from retracting, the unfolding measuring form is kept, and the measurement is convenient.

The notches of the stopper portion 12 at the ends of the damper portion 132 are different from each other, and the structure of the stopper portion will be described below.

Preferably, the position-limiting portion 12 includes at least a first position-limiting member 121 and a second position-limiting member 122. A first limiting member 121 and a second limiting member 122, as shown in fig. 2. The first limiting member 121 and the second limiting member 122 may be located at two axial ends of the first segment 11.

Preferably, the structure of the first limiting member 121 is the same as that of the second limiting member 122. To avoid redundancy, the structure of the first limiting member 121 is described. The first position-limiting member 121 includes a first position-limiting body 1211, a first groove 1212, and a second elastic member 1213. The first stopper 1211 is disposed in the first groove 1212. The first stopper 1211 is connected to a sidewall of the first groove 1212 through a second elastic member 1213. With this arrangement, the first stopper 1211 can be caused to pop out of the first groove 1212 when being compressed by the adjustment portion 13 into the first groove 1212 and slid to the notch along with the segment 11. Preferably, the first stopper 1211 and the adjusting portion 13 abut against each other with a first slope section 12111. In the case where the inner section 11 is slid along the outer section 11 such that the first stopper 1211 of the inner section 11 passes through the two notches formed by the damping layer 132 of the adjustment portion 13 of the outer section 11 and the side wall of the outer section 11, respectively, the first inclined section 12111 of the inner section 11 is opposed to the damping layer 132 in the notch on the sliding direction side such that the first inclined section 12111 and the side wall of the outer section 11 at the notch are in a non-contact state, whereby the first stopper 1211 and the side wall of the outer section 11 are engaged with each other to prevent the inner section 11 and the outer section 11 from being detached from each other. The first inclined section 12111 of the inner section 11 is opposite to the side wall of the outer section 11 at the notch on the opposite side of the sliding direction, so that the first stopper 1211 can abut against the side wall of the outer section 11 at the notch to enter the first groove 1212 when the inner section 11 slides towards the notch to avoid obstructing the sliding of the inner section 11 along the outer section 11. By this arrangement, the segment 11 can slide in both axial directions thereof. As shown particularly in fig. 4, the lateral segment 11 may be represented by a first segment 111. The inner segment 11 may be represented by a second segment 112. When the second segment 112 slides upward, the first stopper 1211 of the first stopper 121, the first inclined section 12111 thereof can be ejected along the second inclined section 1321, and the first stopper 1211 is in a partially expanded state after being notched, but the first inclined section 12111 of the first stopper 1211 and the radial sidewall of the first segment 11 are not parallel to each other, so that after abutting against each other, the first stopper 1211 is in a compressed state so that the second segment 112 can continue to slide upward. When the second segment 112 continues to slide upward, and the second retaining member 122 reaches the notch, the first inclined section 12111 of the first retaining body 1211 and the radial sidewall of the first segment 111 are parallel to each other, so that they can be engaged with each other, and the second segment 112 is prevented from separating from the first segment 111.

Preferably, the fourth position-limiting body 21 and the fifth position-limiting body 22 of the ejection mechanism 2 abut against the position-limiting part 12 after being ejected, so as to push the segment 11 to be completely unfolded.

Preferably, as shown in fig. 8, the body 1 or the segment 11 is provided with a first scale numerical value 100 and a second scale numerical value 200. The correspondence between the second scale numerical value 200 and the first scale numerical value 100 is as follows:

the second scale value 200 ═ the [ first scale value 100 × 0.38696] +30.37+ 6. The accuracy of the prior art formula for the modified nasal-earlobe-xiphoid distance (nasal tip-earlobe-xiphoid distance 0.38696) +30.37+6cm has been widely confirmed. If the intubation tube insertion length is calculated according to the latest intubation tube insertion length formula, an operator needs to measure the distance between the nasal tip and the earlobe and the xiphoid process and then automatically convert the distance, and the calculation method is complicated in conversion and seriously influences the intubation efficiency and the patient experience, so that the converted insertion length is displayed through the second scale value 200 by directly converting the first scale value 100 into the second scale value 200, the medical staff can directly determine the insertion length of the nasogastric tube, and the intubation operation of the medical staff is facilitated.

For ease of understanding, the method of use of the present invention is as follows:

1. after the distance between the tip of the nose, the earlobe and the xiphoid process is obtained after the measurement, the length of the nasogastric tube 30 is measured by the first scale value 100 based on the converted insertion length corresponding to the second scale value 200 corresponding to the first scale value 100. It should be noted that the second scale value 200 is only used to determine the converted implantation length value, and the stomach tube length is measured subsequently to determine the implantation length value, and the measurement is continued by using the first scale value 100.

The embodiment also provides a preferred implementation mode for solving the problem of sterility in measurement and simplifying the operation process to facilitate the measurement operation of medical staff. Since it is troublesome to measure the nasal tip-earlobe-xiphoid process, and the distance of the nasal tip-earlobe-xiphoid process is equal to the distance of the forehead hairline-xiphoid process, the distance of the forehead hairline-xiphoid process is currently used to replace the distance of the nasal tip-earlobe-xiphoid process clinically. In actual practice, a sterile treatment towel is laid in front of the chest of the patient before the patient is intubated, so that the medical measuring tool can realize sterile operation by using the forehead hairline-xiphoid process and the sterile treatment towel. Specifically, after the treatment towel is laid on the chest of the patient, the position of the patient's xiphoid process is confirmed, and the position of the xiphoid process is marked on the treatment towel. Preferably, the means of marking may be by affixing a sterile sticker. Then, the medical measuring tool is sleeved on the stomach tube and is used for flattening the stomach tube, so that the marked position from the forehead hairline of the patient to the treatment towel can be directly measured, and the measurement of the forehead hairline-xiphoid process distance is completed. This measurement can be taken as the distance of the tip of the nose-the lobe of the ear-the xiphoid process.

2. Measuring the length of the nasogastric tube: because the nasogastric tube is generally made of silica gel or polyurethane materials, the length of the nasogastric tube is prevented from being inaccurate in measurement due to the fact that the length of the nasogastric tube is lengthened due to stretching, the nasogastric tube is protected during measurement, and therefore the length of the nasogastric tube is measured by the telescopic medical measuring tool coated with the nasogastric tube. After determining the length value of the nasogastric tube to be placed, the medical measuring tool of the invention is used for measurement. The medical measuring tool is sleeved at the near end of the nasogastric tube, and then the section 11 is pushed to move downwards and is unfolded to the required implantation length. During the downward movement of the segment 11, the first end 113 and the second end 114 of the inner segment 11 can slide relative to each other to automatically fit the nasogastric tube due to the compression of the position-limiting portion 12 of the inner segment 11 by the adjustment portion 13 and thus the compressed state. Can go on flattening and do not produce tensile effort to nose stomach tube through this mode of setting up. Subsequent adjustment of the implantation length can also be achieved by manually pushing the limiting part 12 to adjust the fitting degree of the nasogastric tube 30, and then the implantation length of the nasogastric tube can be accurately determined. Preferably, the ejection mechanism 2 is capable of automatically ejecting the segments 11 during the up and down movement of the segments 11, thereby fully deploying. On one hand, the complete deployment of the segments 11 makes it possible to avoid the problem of inaccurate measurements due to the incomplete pushing/pulling of the segments 11 caused by the need for rapid operation by the medical staff; on the other hand, it is also easy for the medical staff to operate without having to struggle to push/pull the segments 11 to deploy.

3. After the length of insertion of nasogastric tube 30 is determined, the medical gauge of the present invention can be returned to the initial state by retracting segment 11 for marking. The length of the medical gauge of the present invention in its initial state is the length of the segment 11. Preferably, the length of insertion of the nasogastric tube cannula is generally 65cm to 75cm, and the length of the segment 11 can be selected to be 5cm, and a total of 15 segments 11 are required. The thickness of the side wall of the segment 11 plus the thickness of the regulating portion 13 is about 0.2cm, and the total thickness of the side wall of one side of the 15 segments 11 is 3cm, so that the total radius of the medical gauge of the present invention needs 6 cm.

Preferably, it is to be noted that the medical gauge of the present invention is subjected to a sterilization operation before the measurement is performed, and is operated using sterile gloves or sterile gauze during the measurement. Preferably, the sterilization operation may, for example, perform a sterilization operation on the medical gauge of the present invention using hydrogen peroxide, such as liquid hydrogen peroxide sterilization, vaporized hydrogen peroxide sterilization, hydrogen peroxide plasma sterilization, and hydrogen peroxide sol spray sterilization. Preferably, the segments 11 of the present invention may be of polyurethane material, which does not react with hydrogen peroxide. The elastic component can avoid the influence of sterilization operation by adopting a mode of plating a non-metal protective layer.

The present specification encompasses multiple inventive concepts and the applicant reserves the right to submit divisional applications according to each inventive concept. The present description contains several inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", each indicating that the respective paragraph discloses a separate concept, the applicant reserves the right to submit divisional applications according to each inventive concept.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims (8)

1. A medical gauge, characterized by comprising a telescopic body (1) consisting of a plurality of hollow segments (11) nested within one another, said segments (11) being provided with an adjustment portion (13) accommodating an ejection mechanism (2), wherein,

in the event of the inner segment (11) sliding along the outer segment (11) beyond a sliding threshold, the ejection mechanism (2) is moved in the radial direction of the segment (11) out of the adjustment portion (13) and the fourth and fifth stop bodies (21, 22) of the ejection mechanism (2) are ejected to push the inner segment (11) to fully deploy along the outer segment (11), thereby avoiding inaccurate measurements due to incomplete pushing/pulling of the segment (11),

the adjustment portion (13) comprises at least a damping layer (132) and a first elastic element (131) between the segment (11) and the damping layer (132), wherein,

two ends of the damping layer (132) along the sliding direction of the segment (11) form notches with the side wall of the segment (11) respectively;

the damping layer (132) is provided with an opening for the ejection mechanism (2) to move, and second convex parts (1322) for reducing friction are arranged at the abutting positions of the damping layer (132) and the fourth limiting body (21) and the fifth limiting body (22) respectively;

the pop-up mechanism (2) at least comprises a fourth limiting body (21), a fifth limiting body (22) and a fifth elastic piece (25) which is respectively connected with the fourth limiting body (21) and the fifth limiting body (22),

one side of the fourth limiting body (21) facing the adjusting part (13) is provided with a third slope section (211) which is abutted against the side wall of the opening of the adjusting part (13) so that the fourth limiting body (21) moves to compress/recover the fifth elastic piece (25);

one side of the fifth limiting body (22) facing the adjusting part (13) is provided with a fourth slope section (221) which is abutted against the side wall of the opening of the adjusting part (13) so that the fifth limiting body (22) moves to compress/recover the fifth elastic piece (25).

2. The medical gauge according to claim 1, wherein,

in the event of the inner section (11) sliding along the outer section (11) not exceeding a sliding threshold, the ejection mechanism (2) is in a compressed state, being trapped in the opening, and the fourth (21) and fifth (22) arresting bodies and the adjustment portion (13) are in compression against each other;

in the event of the inner segment (11) sliding along the outer segment (11) beyond a sliding threshold, the ejection mechanism (2) is moved in the radial direction of the segment (11) out of the opening and causes the fourth and fifth limiting bodies (21, 22) to eject to push the inner segment (11) to slide along the outer segment (11).

3. The medical gauge according to claim 2, characterized in that the ejection mechanism (2) is further provided with a third groove (23) and a fourth spring (24), wherein,

the fourth limiting body (21), the fifth limiting body (22) and the fifth elastic piece (25) are arranged in the third groove body (23),

a fourth elastic element (24) is arranged between the segment (11) and the third groove (23), wherein,

the third groove (23) is moved in the radial direction of the segment (11) by the fourth elastic member (24), and in the case where the third groove (23) is moved in the radial direction of the segment (11), the axial direction of the third groove (23) is neither parallel nor perpendicular to the axial direction of the adjustment portion (13).

4. The medical gauge according to claim 3, wherein the end of the segment (11) in its sliding direction is provided with at least one stop (12) which can be brought into abutment with an adjustment portion (13) in which the segment (11) is nested, in order to be in a compressed state, and the stop (12) can be brought into abutment with the fourth stop body (21) and the fifth stop body (22), respectively, wherein,

the limiting part (12) is connected with at least one end part of the segment (11) in the circumferential direction so as to enable the two end parts of the segment (11) in the circumferential direction to be separated from each other and then to relatively slide under the action of the force of the adjusting part (13) towards the direction of the measured object, and therefore the segment (11) which is nested in the state that the two segments (11) slide relative to each other automatically covers the measured object through the relative sliding of the two end parts in the circumferential direction.

5. The medical gauge according to claim 4, characterized in that a first end (113) and a second end (114) of the segment (11) in the circumferential direction follow one another, wherein,

the first end part (113) is provided with a second groove body (1131) for inserting the second end part (114) and a slideway (1132) for connecting the limiting part (12) with the first end part (113)/the second end part (114) and sliding along the side wall of the segment (11);

or

The first end portion (113) and the second end portion (114) are attached to each other in a mode that the connecting pieces are sleeved with the first end portion (113) and the second end portion (114), the connecting pieces are provided with slideways (1132) for the limiting portions (12) to be connected with the first end portion (113)/the second end portion (114) along the axial direction of the segments (11), and the limiting portions (12) can drive the connecting pieces to move along the circumferential direction of the segments (11).

6. The medical gauge according to claim 5, wherein the stopper portion (12) includes at least a first stopper (121) provided at an end of the segment (11) in the sliding direction, wherein,

the first position-limiting member (121) comprises a first position-limiting body (1211), a first groove body (1212), and a second elastic member (1213), wherein,

the first limiting body (1211) is arranged in the first groove body (1212), and is connected with the side wall of the first groove body (1212) through the second elastic piece (1213) so that the first limiting body (1211) enters the first groove body (1212) after being compressed by the adjusting portion (13) and is ejected out of the first groove body (1212) under the condition of sliding to the notch along with the section (11).

7. The medical gauge according to claim 6, wherein the first stop body (1211) and the adjustment portion (13) are provided with a first slope section (12111) on the side abutting against each other, wherein,

under the condition that the inner side section (11) slides along the outer side section (11) so that a first limiting body (1211) of the inner side section (11) respectively passes through two notches formed by a damping layer (132) of an adjusting part (13) of the outer side section (11) and a side wall of the outer side section (11), a first inclined section (12111) of the inner side section (11) is opposite to the damping layer (132) in the notch on the side opposite to the sliding direction so that the first inclined section (12111) and the side wall of the outer side section (11) at the notch are in a non-contact state, and therefore the first limiting body (1211) and the side wall of the outer side section (11) are mutually clamped to prevent the inner side section (11) and the outer side section (11) from being separated from each other, and the first limiting body (1211) and the outer side wall of the outer side section (11) are mutually clamped to prevent the inner side section (11) and the outer side section (11) from being separated from each other

The first inclined section (12111) of the inner section (11) and the side wall of the outer section (11) at the notch on one side of the sliding direction are opposite to each other, so that when the inner section (11) slides towards the notch, the first limiting body (1211) can abut against the side wall of the outer section (11) at the notch so as to enter the first groove body (1212) to avoid obstructing the sliding of the inner section (11) along the outer section (11).

8. The medical gauge according to claim 7, wherein the second channel (1131) of the first end portion (113) is provided with at least one recess (1133),

a second limiting body (1141) is arranged in the second end part (114), a first convex part (1142) and a third limiting body (1144) which can enter the concave part (1133) to be clamped with each other are arranged on one side of the second limiting body (1141) corresponding to the concave part (1133), wherein,

the third position-limiting body (1144) is used for abutting against the pushing portion (12112) of the first position-limiting body (1211) so as to drive the second end portion (114) to slide relative to the first end portion (113) under the sliding of the first position-limiting body (121).

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