Medical catheter measuring fixture

Abstract

The utility model relates to a medical catheter measuring fixture, which comprises a go gauge and a no-go gauge which are coaxially arranged, the go gauge is of a stepped shaft structure formed by a group of mandrels with designed diameters and designed lengths, and a shaft shoulder of the stepped shaft formed by the go gauge is a hemispherical no-go gauge. According to the utility model, when the no-go gauge is loaded on the go gauge and the inner diameter of the tube cavity is measured, the go gauge is inserted into the tube cavity and is cut off until the no-go gauge, and if the go gauge can be exposed from the other end of the tube cavity material, a low-temperature plasma sterilizer can be used for disinfection. Measurement is simple, direct and fast.

Description

Technical Field

[0001] The utility model relates to the field of medical catheter measuring tools, in particular to a medical catheter clamping tool for determining whether the length-diameter ratio of a medical catheter meets the sterilization technical requirements of a low-temperature plasma sterilizer. Background Art

[0002] Due to the continuous development of minimally invasive technology, many medical surgeries or medical examinations in clinical practice are carried out using minimally invasive technology. Metal medical catheters of different lengths and diameters are widely used in minimally invasive surgeries and medical examinations. After use, medical catheters need to be centrally disinfected and sterilized. In the prior art, the disinfection and sterilization of medical catheters are carried out in a low-temperature plasma sterilizer.

[0003] During the use of a low-temperature plasma sterilizer, to ensure the achievement of disinfection and sterilization standards, there are strict technical requirements for the lengths corresponding to different diameters of the lumen. For example, in the standard cycle of the TERRAD sterilizer, only the following two types of lumen materials can be processed:

[0004] (1) Single-channel stainless steel lumens with an inner diameter equal to or greater than 1 mm and a length less than or equal to 150 mm;

[0005] (2) Single-channel stainless steel lumens with an inner diameter equal to or greater than 2 mm and a length less than or equal to 400 mm.

[0006] For different models of sterilizers, the calibers and corresponding lengths of the lumen materials that can be processed are also different. For example, medical devices with stainless steel single cavities of the following sizes can be processed in the STERRAD100S sterilization device:

[0007] Inner diameter ≥ 1mm, length ≤ 125mm.

[0008] Inner diameter ≥ 2mm, length ≤ 250mm.

[0009] Inner diameter ≥ 3mm, length ≤ 400mm.

[0010] Such as Figure 1 As shown, when the STERRAD100S sterilization device processes metal lumen materials, only the part with an inner diameter and length below the curve can be processed, and the shaded part cannot be processed. In addition, medical tube-shaped materials with non-metal polyethylene or Teflon lumens and an inner diameter ≥ 1 mm and a length ≤ 1000 mm can be processed.

[0011] Due to the large variety of sizes and specifications of medical catheters, when a large number of medical catheters are centrally disinfected and sterilized, it is necessary to check the diameter and length dimensions of each medical catheter one by one to ensure that the disinfection and sterilization meet the technical requirements and prevent the occurrence of medical accidents.

[0012] In the prior art, the measurement of the diameter and length of medical catheters is carried out using standard measuring tools. Its disadvantages are slow measurement speed, high labor intensity, and inability to meet the measurement requirements for a large number of medical catheters with multiple specifications. Utility Model Content

[0013] In order to improve the measurement efficiency of the diameter and length of medical catheters and reduce the labor intensity, the present utility model discloses a measuring fixture for medical catheters.

[0014] The technical solution of the present utility model is: a measuring fixture for medical catheters, including a go gauge and a no-go gauge arranged coaxially. The go gauge is a stepped shaft structure composed of a set of mandrels with designed diameters and designed lengths. The shoulder of the stepped shaft formed by the go gauge is a hemispherical no-go gauge.

[0015] Further, in the above-mentioned measuring fixture for medical catheters: the go gauge is a mandrel with a designed diameter and a designed length, and the no-go gauge is a sphere slidably sleeved on the go gauge.

[0016] Further, in the above-mentioned measuring fixture for medical catheters: the go gauge is a mandrel with a designed diameter and a designed length, and the no-go gauge is a flange slidably sleeved on the go gauge.

[0017] Further, in the above-mentioned measuring fixture for medical catheters: the go gauge is a mandrel with a designed diameter and a designed length, and the no-go gauge is a sleeve slidably sleeved on the go gauge.

[0018] Further, in the above-mentioned measuring fixture for medical catheters: at the starting point of the mandrel with a designed diameter and a designed length as the go gauge, it is hemispherical.

[0019] Further, in the above-mentioned measuring fixture for medical catheters: on the mandrel with a designed diameter and a designed length as the go gauge, there are also scales indicating the length.

[0020] In the present utility model, when the no-go gauge body is loaded onto the go gauge, when measuring the inner diameter of the tube cavity, the go gauge is inserted into the tube cavity until it reaches the no-go gauge body. If the go gauge can still protrude from the other end of the tube cavity material, it means that it can be sterilized using a low-temperature plasma sterilizer. The measurement is simple, direct, and fast.

[0021] The following will describe the present utility model in detail with reference to the accompanying drawings and specific embodiments. Description of the Drawings

[0022] Figure 1 For the metal tube cavity materials that can be processed by the STERRAD100S sterilization device;

[0023] Figure 2 For the schematic diagram of the measuring fixture for medical catheters of the present utility model;

[0024] Figure 3 This is the structural diagram of the measuring fixture for Embodiment 1 of the present utility model;

[0025] Figure 4 This is the exploded view of the measuring fixture for Embodiment 1 of the present utility model;

[0026] Figure 5 This is the structural diagram of the measuring fixture for Embodiment 2 of the present utility model;

[0027] Figure 6 This is the exploded view of the measuring fixture for Embodiment 2 of the present utility model;

[0028] Figure 7 This is the structural diagram of the measuring fixture for Embodiment 3 of the present utility model;

[0029] Figure 8 This is the exploded view of the measuring fixture for Embodiment 3 of the present utility model. Detailed implementation manners

[0030] As Figure 2 shown: A medical catheter measuring fixture includes a go - gauge 1 and a no - go - gauge 2 arranged coaxially. The go - gauge 1 is a stepped - shaft structure composed of a set of mandrels with designed diameters and lengths, and the shaft shoulder of the stepped - shaft formed by the go - gauge 1 is a hemispherical no - go - gauge 2. As Figure 2 shown, when measuring the lumen material to be sterilized, if the inner diameter is smaller than the shaft shoulder of the first stepped - shaft, it is the no - go - gauge 2; if it is larger than the shaft shoulder of the first stepped - shaft, the shaft shoulder of the first stepped - shaft is part of the go - gauge, and the shaft shoulder of the second stepped - shaft is the no - go - gauge 2.

[0031] Embodiment 1 As Figure 3 and Figure 4 shown: This embodiment is a measuring fixture for measuring the inner diameter and length of a pipe material. We know that the measuring fixture mainly consists of two parts, the go - gauge and the no - go - gauge. In this embodiment, it is necessary to measure the inner diameter and length of the lumen material. Only when the inner diameter is within a certain range and the length is within the corresponding length range can it be processed in the sterilization device. In this embodiment, the go - gauge 1 includes a stepped - shaft composed of a stainless - steel shaft with scale marks on it to mark its length, and the no - go - gauge 2 is a ball 201 with a specified diameter at a specified position on the stainless - steel shaft.

[0032] As Figure 3 and Figure 4 shown, in this embodiment, the measuring fixture is composed of two parts. The go - gauge 1 is a stepped stainless - steel shaft composed of a stainless - steel shaft with a hemispherical top 101, and the no - go - gauge body 2 is a plastic ball 201 arranged on the mandrel, with a total of N, where N is a natural number and is related to the requirements of the lumen material processed by the sterilizer. In fact, in front of the plastic ball 201, the shaft shoulder of the stepped - shaft forms a hemispherical no - go - gauge 2.

[0033] As Figure 1 shown, the STERRAD100S sterilization device can process metal lumen materials. It can process metal lumen materials in three segments with diameters greater than 1 mm and less than 2 mm, greater than 2 mm and less than 3 mm, and greater than 3 mm and less than 5 mm. Their maximum lengths are 125 mm, 250 mm, and 400 mm respectively. Therefore, N here is 3. Thus, there are three plastic balls 3, as Figure 3 shown. On a mandrel with a diameter of 1 mm, a plastic ball 201 with a diameter of 2 mm is set at 125 mm, a plastic ball 201 with a diameter of 3 mm is set at 250 mm, and a plastic ball 201 with a diameter of 5 mm is set at 400 mm, as Figure 3 and Figure 4 shown. Using this measuring device, it can be matched with the STERRAD100S sterilization device. After the metal lumen material to be processed is measured by this measuring device, it can be determined whether it can be processed. For example, take out a metal lumen material. The top of the mandrel, that is, the hemispherical part 101, is inserted into the lumen until it is blocked by a certain ball and cannot be inserted further. At this time, if the mandrel extends from the back, it means it can be processed. For example, if it cannot be inserted at the first ball 201, at this time, the inner diameter of the lumen material should be greater than or equal to 1 mm and less than 2 mm. If at this time, the top of the mandrel extends from the other end, its length will not be longer than 125 mm and can be processed. When the mandrel cannot be inserted into the lumen material, it means its inner diameter is less than 1 mm and cannot be processed. When the mandrel is blocked by the second ball when inserted into the lumen material, it means the inner diameter of the lumen material should be less than 3 mm and greater than 2 mm. Then check whether the mandrel extends from the other end. If it extends, it means its length is less than 250 mm and can be processed. If it does not extend, it means its length is greater than 250 mm and cannot be processed. By analogy, when it can only be blocked by the last plastic ball 201, it means the inner diameter of the lumen material is greater than 3 mm and less than 5 mm. Then check whether the mandrel extends from the other end. If it extends, it means its length is less than 400 mm and can be processed. If it does not extend, it means its length is greater than 400 mm and cannot be processed. If the last ball cannot block it either, it means the inner diameter of the lumen material is greater than 5 mm, and no matter what its length is, it cannot be processed.

[0034] The measuring fixture of this embodiment is very convenient to produce and install. Take a stainless steel mandrel with a diameter of 1 mm, grind the top into a hemispherical shape, produce three plastic balls with diameters of 2 mm, 3 mm, and 5 mm respectively, and then install the 2 - mm plastic ball at 125 mm on the stainless steel shaft, the 3 - mm plastic ball at 250 mm on the stainless steel shaft, and the 5 - mm plastic ball at 400 mm on the stainless steel shaft.

[0035] For different sterilization devices, different plastic balls 201 can be installed at specified positions according to their requirements to cooperate with different sterilization devices. For example, the requirements for the standard cycle of the TERRAD sterilizer are

[0036] (1) A single-channel stainless steel tube cavity with an inner diameter equal to or greater than 1 mm and a length less than or equal to 150 mm.

[0037] (2) A single-channel stainless steel tube cavity with an inner diameter equal to or greater than 2 mm and a length less than or equal to 400 mm.

[0038] The measuring device corresponding to this sterilization device is a mandrel with a diameter of 1 mm and a length of 400 mm. A 2-mm plastic ball 201 is set at the 150-mm position of the mandrel. During measurement, when the mandrel is inserted into the tube cavity of the tube cavity material, if it cannot be inserted, it means that the inner diameter is less than 1 mm and it cannot be processed. When blocked by the ball, it means that the inner diameter is equal to or greater than 1 mm and less than 2 mm. If the shaft extends out at the other end, it means that the length is less than the maximum length of 150 mm and it can be processed. If the ball cannot block and reaches the end of the shaft, and the mandrel does not extend out at the other end of the tube cavity, it means that the length is greater than 400 mm and it cannot be processed.

[0039] Example 2 is as Figure 5 and Figure 6 shown. In this embodiment, the mandrel as the go gauge remains unchanged, and only the plastic ball 202 as the no-go gauge 2 is replaced with a disc 202 at the same position on the mandrel. That is to say, according to the requirements of the sterilization device itself, the diameter of the specified mandrel, the diameter of the specified disc 202, and the specified installation position are selected. That is, the disc 202 is installed at the specified position on the mandrel. The usage method is the same as that in the embodiment.

[0040] Example 3 is as Figure 7 and Figure 8 shown. In this embodiment, a sleeve 203 is used as the no-go gauge body on the mandrel. This embodiment is also one kind of Figure 1The measuring plug gauge for the STERRAD 100S sterilization device shown. The measuring fixture consists of a graduated mandrel with marked lengths thereon and two sleeves 203. One sleeve has a diameter of 2 mm and is sleeved at the 125 mm position of the mandrel. The other sleeve 203 has a diameter of 3 mm and is set at the 250 mm position of the mandrel. A flange 20 is provided at the end of the stainless steel shaft, i.e., at the 400 mm position. The diameter of the flange 20 is equal to 5 mm. The length from the flange 20 to the top of the mandrel is 400 mm. At this time, the length of the latter sleeve is 150 mm, and the length of the first sleeve 203 is 275 mm. It can be seen that the exposed part is 125 mm. During measurement, the top of the hemispherical part 101 of the mandrel is inserted into the lumen of the lumen material from one end of the lumen. If it cannot be inserted, it indicates that the inner diameter of the lumen of this material is less than 1 mm and cannot be processed by the STERRAD 100S sterilization device. When the mandrel can be inserted into the lumen and is blocked by the first sleeve 203 and cannot continue to extend, it indicates that the inner diameter of the lumen is greater than 1 mm and less than 2 mm. If at this time the top of the mandrel has extended out from the other end of the lumen material, it indicates that the inner diameter of this section of the lumen material is greater than 1 mm and less than 2 mm, and the length is less than 125 mm, and it can be processed by the STERRAD 100S sterilization device. If the top of the mandrel has not extended out from the other end of the lumen material, it indicates that its length is greater than 125 mm and cannot be processed by the STERRAD 100S sterilization device. If the first sleeve can also enter the lumen and continue to extend forward but is blocked by the second sleeve 10, if at this time the top of the mandrel has extended out from the other end of the lumen material, it indicates that the inner diameter of this section of the lumen material is greater than 2 mm and less than 3 mm, and the length is less than 250 mm, and it can be processed by the STERRAD 100S sterilization device. If the top of the mandrel has not extended out from the other end of the lumen material, it indicates that its length is greater than 250 mm and cannot be processed by the STERRAD 100S sterilization device. If the second sleeve can also enter the lumen and continue to extend forward but is blocked by the flange 20 provided at the end of the stainless steel shaft, if at this time the top of the mandrel has extended out from the other end of the lumen material, it indicates that the inner diameter of this section of the lumen material is greater than 3 mm and less than 5 mm, and the length is less than 400 mm, and it can be processed by the STERRAD 100S sterilization device. If the top of the mandrel has not extended out from the other end of the lumen material, it indicates that its length is greater than 400 mm and cannot be processed by the STERRAD 100S sterilization device. At this time, if it continues to extend and the lumen material can still pass through the flange 20, it indicates that the inner diameter of the lumen material is greater than 5 mm. At this time, it cannot be processed by the STERRAD 100S sterilization device.

[0041] In this embodiment, the production and assembly of the measuring fixture are very convenient. The top of a mandrel with a diameter of 1 mm is ground into a hemispherical shape, which is convenient for inserting into the lumen material and not easily damaging the interior of the lumen material. A flange with a diameter of 0.5 mm is installed at 400 mm. Then, a sleeve 203 with a diameter of 2 mm and a length of 275 mm and a sleeve with a diameter of 3 mm and a length of 150 mm are produced. Chamfers are made at the front ends of these two sleeves to form the above-mentioned go-no-go gauge 2. The sleeve 203 with a diameter of 2 mm is sleeved on the mandrel, and the tail abuts against the flange 20. Then, the sleeve with a diameter of 3 mm is sleeved on the sleeve 203, and the tail directly abuts against the flange. In this way, a measuring fixture is completed.

Claims

1. A medical catheter measuring fixture, characterized in that: The invention comprises a through gauge (1) and a stop gauge (2) arranged on a coaxial line, wherein the through gauge (1) is a stepped shaft structure formed by a group of mandrels of designed diameter and designed length, and the shaft shoulder of the stepped shaft formed by the through gauge (1) is a hemispherical stop gauge (2).

2. The medical catheter measuring fixture according to claim 1, characterized in that: The through gauge (1) is a mandrel with a designed diameter and a designed length, and the stop gauge (2) is a sphere (201) slidably mounted on the through gauge (1).

3. The medical catheter measuring fixture according to claim 1, characterized in that: The through gauge (1) is a mandrel of designed diameter and designed length, and the stop gauge (2) is a flange (202) slidably mounted on the through gauge (1).

4. The medical catheter measuring fixture according to claim 1, characterized in that: The through gauge (1) is a mandrel of designed diameter and designed length, and the stop gauge (2) is a sleeve (203) slidably mounted on the through gauge (1).

5. The medical catheter measuring fixture according to claim 1, 2, 3 or 4, characterized in that: On a mandrel of designed diameter and designed length as the go gauge (1), the start is a hemispherical shape (101).

6. The medical catheter measuring fixture according to claim 5, characterized in that: A scale indicating the length is also provided on the mandrel having the designed diameter and the designed length of the through gauge (1).

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