CN112345221A

CN112345221A - Medical syringe detection device

Info

Publication number: CN112345221A
Application number: CN202011208943.5A
Authority: CN
Inventors: 周燕
Original assignee: Shenzhen Leningkang Medical Technology Co ltd
Current assignee: Shenzhen Leningkang Medical Technology Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-02-09
Anticipated expiration: 2040-11-03
Also published as: CN112345221B

Abstract

The invention relates to the technical field of medical instrument detection devices, in particular to a medical injector detection device which comprises a detector shell, a sliding property detection module, an adhesion property detection module, a water storage cylinder, a connecting pipe and a processing module, wherein the sliding property detection module is used for detecting the sliding property of the medical injector; the sliding property measuring module, the sealing property measuring module and the water storage cylinder are all arranged on the shell of the detector; the slippage measuring module comprises a clamping plate and a clamping jaw, wherein the clamping plate extends out of the shell of the detector and can clamp lugs on two sides of the injector; the sealing performance measuring module comprises an electric brush and a resistance changing piece, and the electric brush is fixedly arranged on the shell of the detector; the two electric brushes are electrically connected with the processing module; the two poles of the resistance-changing piece are respectively connected to the two electric brushes in a sliding and electrified mode, and the resistance-changing piece can extend into the water storage cylinder and slide relative to the electric brushes along with the change of the water level in the water storage cylinder.

Description

Medical syringe detection device

Technical Field

The invention relates to the technical field of medical instrument detection devices, in particular to a medical injector detection device.

Background

The syringe is a common medical product, and after the syringe is manufactured, a plurality of tests are needed, and the syringe can be put into use after being qualified, wherein the tests comprise tightness test and sliding property test. In the prior art, the two tests of the tightness detection and the sliding property detection are separately detected, and the separate detection wastes a large amount of time and product samples, so that the detection is very inconvenient.

Disclosure of Invention

Technical problem to be solved

In order to solve the above problems, the present invention provides a medical syringe detection device capable of simultaneously detecting the sliding performance and the sealing performance of a syringe.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a medical injector detection device comprises a detector shell, a sliding property detection module, a sealing property detection module, a water storage cylinder, a connecting pipe and a processing module; the sliding property measuring module, the sealing property measuring module and the water storage cylinder are all arranged on the shell of the detector; the processing module is arranged in the shell of the detector; the slippage measuring module comprises a clamping plate and a clamping jaw, wherein the clamping plate extends out of the shell of the detector and can clamp lugs on two sides of the injector; the first end of the connecting pipe can be communicated with the water storage cylinder, and the second end of the connecting pipe can be communicated with an injection port of the injector; the sealing performance measuring module comprises an electric brush and a resistance changing piece, and the electric brush is fixedly arranged on the shell of the detector; the two electric brushes are electrically connected with the processing module; the two poles of the resistance changing piece are respectively connected to the two electric brushes in a sliding and electrified mode, the resistance changing piece can extend into the water storage cylinder and slide relative to the electric brushes along with the change of the water level in the water storage cylinder, and meanwhile the length of the two poles of the resistance changing piece connected to the electric brushes is changed.

Preferably, the connecting pipe comprises a hose and a joint, one end of the hose is communicated with the water storage cylinder, the other end of the hose is connected with the joint, and a rubber ring arranged in a valve shape is arranged in the joint.

Preferably, the medical injector detection device further comprises a tilting slideway and a driving module; the injector can lead the lug bosses to be arranged at two sides of the inclined slideway and slide downwards along the inclined slideway; the two ends of the bottom of the inclined slideway are provided with a first slideway and a second slideway which are arranged in a staggered manner; the drive module can make the syringe get into first slide or second slide after the slope slide roll-off, and first slide is close to the clamping board setting, and the syringe can slide to surveying the gliding nature module department along slope slide and first slide.

Preferably, the driving module comprises a shell, a first motor and a lane changing piece, the shell is installed at the intersection of the first slideway and the second slideway, and the first motor is electrically connected with the processing module; the first motor is fixedly arranged in the shell, the lane changing piece is rotationally connected to the shell, and the first motor is in driving connection with the lane changing piece; the lane-changing piece is rotated to enable the inclined slideway to be communicated with the first slideway or the second slideway.

Preferably, the driving module further includes an inductor, the inductor is fixedly disposed in the housing and disposed close to the first slideway, and the inductor is electrically connected to the processing module.

Preferably, the slidability measuring module further comprises a second motor and a lead screw; a vertical sliding groove is formed in the shell of the detector; the clamping plate comprises an upper pressing plate and a lower bearing plate; the upper pressing plate and the lower bearing plate extend out of the sliding groove and can slide along the sliding groove, and the lug of the injector can be arranged between the upper pressing plate and the lower bearing plate; the second motor is arranged in the shell of the detector; the screw rod is vertically arranged in the shell of the detector and is in driving connection with the second motor; the upper pressure plate is in threaded connection with the screw rod.

Preferably, the sliding performance testing module further comprises an elastic piece, the bottom end of the elastic piece is connected with the detector shell, and the top end of the elastic piece is connected with the lower bearing plate.

Preferably, the clamping jaw comprises an upper jaw and a lower jaw which are fixedly connected; the upper claw and the lower claw extend out of the sliding groove and can slide along the sliding groove; the hand-resisting block of the injector can be arranged between the upper claw and the lower claw.

Preferably, the slidability measuring module further comprises a third motor, a gear and a rack; the third motor is arranged in the shell of the detector, and the gear is in driving connection with the third motor; the clamping jaw is fixedly arranged on the rack, and the rack is meshed with the gear.

Preferably, the varistor piece comprises a floating block and two varistor slide bars, the floating block is made of insulating materials, the varistor slide bars are made of conductive materials, and the bottoms of the two varistor slide bars are mutually connected and are both fixedly connected to the floating block; one side of the water storage cylinder is communicated with a vertical water level pipe; the floating block is arranged in the water level pipe in a sliding way and can move up and down along with the height change of the water level in the water level pipe; the two resistance-variable sliding rods are respectively connected with the electric brush in a sliding way.

(III) advantageous effects

The invention provides a medical injector detection device, which has the following beneficial effects: when the water-saving device is used, the claw is upwards slid at a certain speed, so that the claw drives the core rod of the injector to upwards slide, and water is pumped into the injector from the water storage cylinder until the reference line reaches the nominal scale capacity line; when the datum line reaches the nominal scale capacity line, stopping the movement of the core rod; and after waiting for 30 seconds, downwards sliding the clamping jaw at a certain speed, so that the clamping jaw drives the core rod of the injector to downwards slide, and extruding water out of the cylinder until the core rod returns to the initial position. The sliding performance of the injector can be judged by measuring the push-pull force applied to the clamping jaw in the process of pumping water and injecting water of the injector. Before the injector absorbs water, the processing module can measure the resistance of the current passing through the two electric brushes and the rheostat, after the injector is injected with water, the processing module measures the resistance of the current passing through the two electric brushes and the rheostat again, and the measured resistance is compared with the measured result of the last time. If the two measurement results are consistent, the condition that water leakage does not occur in the process of water absorption and water injection of the injector is indicated, and the sealing performance of the injector is good; if the two measurement results are inconsistent, the sealing performance of the injector does not reach the standard.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 shows an overall structural schematic of an embodiment of the present invention;

FIG. 2 shows a schematic structural view of a cross slide in an embodiment of the invention;

FIG. 3 shows a schematic structural diagram of a slip measurement module in an embodiment of the invention;

FIG. 4 shows a schematic diagram of a seal module in an embodiment of the invention;

FIG. 5 shows a cross-sectional view of a seal module in an embodiment of the invention;

fig. 6 shows a cross-sectional view of a joint in an embodiment of the invention.

In the figure: the device comprises a detector shell 1, a sliding groove 11, a sliding module 2, a clamping plate 21, an upper pressing plate 211, a lower supporting plate 212, a second motor 23, a screw rod 24, an elastic element 25, a claw 26, an upper claw 261, a lower claw 262, a third motor 27, a gear 28, a rack 29, an adhesion module 3, a brush 31, a variable resistance element 32, a floating block 321, a variable resistance sliding rod 322, a water storage cylinder 4, a water level pipe 41, a connecting pipe 5, a hose 51, a joint 52, a rubber ring 521, a valve 5211, an inclined slideway 6, a slideway 7, a crossed slideway 71, a driving module 711, a first motor 712, a slideway 713, a slideway 72, a slideway 73 and a sensor 74.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, an embodiment of the present invention provides a medical injector detection apparatus, including a detector housing 1, a slidability measurement module 2, an adhesion measurement module 3, a water storage tank 4, a connection pipe 5, and a processing module; the sliding property measuring module 2, the sealing property measuring module 3 and the water storage cylinder are all arranged on the detector shell 1; the processing module is arranged in the detector shell 1; the slippage measuring module 2 comprises a clamping plate 21 and clamping jaws 26, wherein the clamping plate 21 extends out of the detector shell 1, the clamping plate 21 can clamp lugs on two sides of the injector, the clamping jaws 26 can be clamped with hand supporting blocks of the injector, and the clamping jaws 26 can be close to or far away from the clamping plate 21; the first end of the connecting pipe 5 can be communicated with the water storage cylinder 4, and the second end of the connecting pipe 5 can be communicated with an injection port of the injector; the tightness measuring module 3 comprises an electric brush 31 and a rheostat 32, wherein the electric brush 31 is fixedly arranged on the detector shell 1; two electric brushes 31 are arranged, and both the two electric brushes 31 are electrically connected with the processing module; the two poles of the resistance-changing element 32 are respectively connected to the two brushes 31 in a slidable and electrically-charged manner, the resistance-changing element 32 can extend into the water storage cylinder 4 and slide relative to the brushes 31 along with the change of the water level in the water storage cylinder 4, and the length of the two poles of the resistance-changing element 32 connected to the brushes 31 is changed along with the change of the water level.

According to the above scheme, the processing module can be a single chip microcomputer or a computer and other intelligent devices, it should be noted that the single chip microcomputer or the computer serving as the processing module is the prior art, and the principle of the single chip microcomputer or the computer is not described in detail in this embodiment. The processing module further comprises a force measuring module electrically connected with the jaw 26, and the force measuring module can measure the magnitude of the push-pull force applied to the jaw 26. The jaws 26 are located above the clamping plate 21.

When in use, the water storage cylinder 4 is firstly ensured to be filled with enough water for the syringe to suck; clamping lugs at two sides on a clamping plate 21 to fix a cylinder of the injector in a state that an injection port of the injector faces downwards, and clamping a hand support block of the injector at a clamping claw 26, wherein at the moment, a piston of the injector is abutted against the bottom surface of the cylinder; then, the second end of the connecting pipe 5 is communicated with an injection port of the injector; the claw 26 is upwards slid at a certain speed, so that the claw 26 drives the core rod of the injector to upwards slide, and water is pumped into the injector from the water storage cylinder 4 until the reference line reaches the nominal scale capacity line; when the datum line reaches the nominal scale capacity line, stopping the movement of the core rod; after waiting for 30 seconds, the jaws 26 are slid downwards at a certain speed, so that the jaws 26 drive the core rod of the injector to slide downwards, and water is extruded out of the cylinder until the core rod returns to the initial position. The sliding performance of the injector can be judged by measuring the push-pull force applied to the clamping jaws 26 during the pumping and filling of the injector.

When the injector detects the sliding performance, the injector can suck the water in the water storage cylinder 4 and inject the water back into the water storage cylinder 4, so that whether the injector leaks water in the water suction and injection process can be judged only by measuring whether the water level in the water storage cylinder 4 changes at the beginning and the end of the process, and further whether the tightness of the injector reaches the standard is judged.

In use, current will continuously pass between the two brushes 31 and the varistor 32. The processing module measures and records the resistance of the current through the two brushes 31 and the varistor 32. When the injector sucks or injects water, the variable resistance element 32 slides downwards or upwards along with the water level change in the water storage cylinder 4, the length of the variable resistance element 4 through which the current passes is increased or shortened, and the resistance measured by the processing module is changed along with the length change of the variable resistance element 4 through which the current passes. Before the injector absorbs water, the processing module measures the resistance of the current passing through the two brushes 31 and the rheostat 32, and after the injector is filled with water, the processing module measures the resistance of the current passing through the two brushes 31 and the rheostat 32 again and compares the measured resistance with the previous measured result. If the two measurement results are consistent or the difference value is within the allowable range, the condition that water leakage does not occur in the process of water absorption and water injection of the injector is indicated, and the sealing performance of the injector is good; if the two measurement results are inconsistent, the sealing performance of the injector does not reach the standard.

Thus, the sliding property and the adhesion of the syringe can be simultaneously detected.

Furthermore, the connecting pipe 5 comprises a hose 51 and a joint 52, one end of the hose 51 is communicated with the reservoir 4, the other end of the hose 51 is connected with the joint 52, and a rubber ring 521 arranged in a valve shape is arranged in the joint 52.

Specifically, the valve 5211 is disposed around the inside of the rubber ring 522 and bent toward the bottom of the fixing member 521, so as to close the rubber ring 522, so that water does not flow out of the joint 52 when the joint 52 is not in communication with the injection port of the syringe. The joint 52 is fixedly connected to the clamping plate 21 right below. When the device is used, the injector is fixed on the clamping plate 21 in a state that the injection port faces downwards, then the injection port of the injector is inserted into the rubber ring 522, at the moment, the valve 5211 is pressed towards the periphery by the injection port, the valve 5211 is opened, the injection port can be communicated with the hose 51 through the joint 52, and the sliding performance detection of the injector can be carried out.

Further, since the detection of the sliding property and the sealing property is performed when the syringe is not provided with a needle, in order to facilitate the picking of the syringe on the production line in the production and manufacturing process, the medical syringe detection device further comprises an inclined slideway 6 and a driving module 71; the injector can support the lug brackets at two sides of the inclined slideway 6 and slide downwards along the inclined slideway 6; the two ends of the bottom of the inclined slideway 6 are provided with a first slideway 72 and a second slideway 73 which are arranged in a staggered way; the drive module 71 can slide the syringe out of the inclined slide 6 and into the first slide 72 or the second slide 73, the first slide 72 is disposed adjacent to the clamping plate 21, and the syringe can slide along the inclined slide 6 and the first slide 72 to the position of the slidability measuring module 2.

Further, the driving module 71 includes a housing 711, a first motor 712 and a lane-changing member 713, the housing 711 is installed at the intersection of the first slideway 72 and the second slideway 73, and the first motor 712 is electrically connected with the processing module; the first motor 712 is fixedly arranged in the housing 711, the lane changing member 713 is rotatably connected to the housing 711, and the first motor 712 is in driving connection with the lane changing member 713; rotating the lane-changing member 713 may cause the inclined ramp 6 to connect to the first ramp 72 or the second ramp 73.

Further, the driving module 71 further includes a sensor 74, the sensor 74 is fixedly disposed in the housing 711 and disposed near the first sliding channel 72, and the sensor 74 is electrically connected to the processing module.

Specifically, the inclined slide 6, the first slide 72 and the second slide 73 are all composed of two parallel elongated components, and the distance between the two components is slightly larger than the diameter of the syringe barrel. The track-changing component 713 is in a "Y" shape, the tail of the track-changing component is connected to the first motor 712, and both sides of the track-changing component are respectively connected to the first slideway 72 or the second slideway 73, so that the first slideway 72 or the second slideway 73 is connected to the inclined slideway 6 under the driving of the first motor 712. The syringe passing through the first chute 72 will be tested and the second end of the second chute 73 will be connected to the original production line, and the syringe passing through the second chute 73 will be returned to the original production line for further production. The sensor 74 is preferably a laser detection sensor.

When a syringe needs to be picked up for detection, the processing module sends a signal to the first motor 712, and the first motor 712 drives the lane changing piece 713 to rotate in the direction away from the first slide way 72, so that the lane changing piece 713 is connected with a part of the first slide way 72 close to one side of the second slide way 73, and the second slide way 73 is intercepted, so that the syringe can slide down from the inclined slide way 6, enter the first slide way 72, and finally slide out from the first slide way 72 to the clamping plate 21.

When the sensor 74 detects that an object passes by, a signal is sent to the first motor 712, so that the first motor 712 drives the lane-changing member 713 to rotate in a direction close to the first slideway 72, so that the lane-changing member 713 engages with a part of the second slideway 73 close to one side of the first slideway 72 and intercepts the first slideway 72. Therefore, only one injector can be tested at a time, and the subsequent injectors can be normally produced.

Further, the slidability measuring module 2 further comprises a second motor 23 and a screw rod 24; a vertical sliding groove 11 is arranged on the detector shell 1; the chucking plate 21 includes an upper pressing plate 211 and a lower bearing plate 212; the upper pressing plate 211 and the lower bearing plate 212 both extend out of the sliding groove 11 and can slide along the sliding groove 11, and lugs of the injector can be arranged between the upper pressing plate 211 and the lower bearing plate 212; the second motor 23 is arranged in the detector shell 1; the screw rod 24 is vertically arranged in the detector shell 1 and is in driving connection with the second motor 23; the upper press plate 211 is screwed with the screw rod 24.

Further, the measurement sliding module 2 further includes an elastic member 25, a bottom end of the elastic member 25 is connected to the measurement instrument housing 1, and a top end thereof is connected to the lower support plate 212.

Specifically, the elastic member 25 is preferably a compression spring. When the medical injector detecting device is idle, the lower supporting plate 212 is flush with the second end of the first slide way 72.

When the injector is used, the injector slides out of the first slide way 72 to the lower bearing plate 212, the processing module sends a signal to the second motor 23, the second motor 23 drives the screw rod 24 to rotate, and the screw rod 24 drives the upper pressing plate 211 to slide downwards close to the lower bearing plate 212 so as to clamp lugs on two sides of the injector. Then, the second motor 23 continues to operate, so that the upper pressing plate 211 and the lower bearing plate 212 continue to slide downwards, and the syringe is driven downwards until the injection port of the syringe is inserted into the connector 52. The resilient member 25 is now in a compressed state. After the detection is finished, the second motor 23 drives the screw rod 24 to rotate, so as to drive the upper pressing plate 211 to slide upwards to the initial position, and the lower bearing plate 212 returns to the position flush with the second end of the first slide way 72 under the elastic force of the elastic piece 25.

Further, the claw 26 comprises an upper claw 261 and a lower claw 262, and the upper claw 261 is fixedly connected with the lower claw 262; the upper claw 261 and the lower claw 262 both extend out of the sliding groove 11 and both can slide along the sliding groove 11; the hand-holding block of the syringe may be placed between the upper jaw 261 and the lower jaw 262.

Further, the slidability measuring module 2 further includes a third motor 27, a gear 28, and a rack 29; the third motor 27 is arranged in the detector shell 1, and the gear 28 is in driving connection with the third motor 27; the jaw 26 is fixed on a rack 29, and the rack 29 is meshed with the gear 28.

In particular, the jaws 26 are positioned above the clamping plate 21. When the syringe is slid off the first slide 72 onto the lower deck 212, its stop will be placed between the upper jaw 261 and the lower jaw 262. When the injector needs to absorb water, the processing module sends a signal to the third motor 27, so that the third motor 27 drives the claw 26 to slide upwards, the lower claw 262 abuts against the hand block, and the core rod is driven to slide upwards to absorb water; when the injector needs to be filled with water, the processing module sends a signal to the third motor 27, so that the third motor 27 drives the clamping jaw 26 to slide downwards, the upper jaw 261 abuts against the hand block, and the extrusion core rod slides downwards to fill water.

Further, the varistor 32 includes a floating block 321 and two varistor rods 322, the floating block 321 is made of insulating material, the varistor rods 322 are made of conductive material, and bottoms of the two varistor rods 322 are connected with each other and both fixedly connected to the floating block 321; one side of the water storage cylinder 4 is communicated with a vertical water level pipe 41; the floating block 321 is slidably disposed in the water level pipe 41 and can move up and down along with the height change of the water level in the water level pipe 41; the two resistance-changing sliding rods 322 are respectively connected with the electric brush 31 in a sliding way.

Specifically, a water level pipe 41 is additionally provided to measure the water level so as not to hinder the addition of water into the reservoir tank 4. The floating block 321 is preferably made of a plastic material with light weight and certain strength, and when the floating block 321 floats up and down along with the water level in the water level pipe 41, the floating block can drive the resistance-variable sliding rod 322 to slide up and down relative to the electric brush 31. Since the floating block 321 should instantly and sensitively float up and down according to the water level in the water level pipe 41, the floating block 321 is in clearance fit with the inner side wall of the water level pipe 41 to reduce the friction between the floating block 321 and the inner side wall of the water level pipe 41.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A medical injector detection device is characterized by comprising a detector shell (1), a sliding property detection module (2), a tightness detection module (3), a water storage cylinder (4), a connecting pipe (5) and a processing module;

the sliding property measuring module (2), the sealing property measuring module (3) and the water storage cylinder are all arranged on the detector shell (1); the processing module is arranged in the detector shell (1);

the slippage measuring module (2) comprises a clamping plate (21) and clamping jaws (26) which extend out of the detector shell (1), the clamping plate (21) can clamp lugs on two sides of the injector, the clamping jaws (26) can be clamped with hand-supporting blocks of the injector, and the clamping jaws (26) can be close to or far away from the clamping plate (21); the first end of the connecting pipe (5) can be communicated with the water storage barrel (4), and the second end of the connecting pipe (5) can be communicated with an injection port of an injector;

the tightness measuring module (3) comprises an electric brush (31) and a resistance changing piece (32), wherein the electric brush (31) is fixedly arranged on the detector shell (1); the number of the electric brushes (31) is two, and the two electric brushes (31) are electrically connected with the processing module; the two poles of the resistance changing piece (32) are respectively connected to the two electric brushes (31) in a slidable and electrified mode, the resistance changing piece (32) can extend into the water storage cylinder (4) and can slide relative to the electric brushes (31) along with the change of the water level in the water storage cylinder (4), and meanwhile the length of the two poles of the resistance changing piece (32) connected to the electric brushes (31) is changed along with the change of the water level.

2. The medical injector detection device according to claim 1, wherein the connection tube (5) comprises a hose (51) and a connector (52), one end of the hose (51) is connected with the water storage barrel (4), the other end of the hose (51) is connected with the connector (52), and a rubber ring (521) arranged in a valve shape is arranged in the connector (52).

3. The medical injector testing device according to claim 1, further comprising a ramp (6) and a drive module (71); the injector can support lugs on two sides of the inclined slideway (6) and slide downwards along the inclined slideway (6); the two ends of the bottom of the inclined slideway (6) are provided with a first slideway (72) and a second slideway (73) which are arranged in a mutually staggered way; the drive module (71) can enable the injector to slide out of the inclined slide way (6) and then enter the first slide way (72) or the second slide way (73), the first slide way (72) is arranged close to the clamping plate (21), and the injector can slide to the position of the slidability measuring module (2) along the inclined slide way (6) and the first slide way (72).

4. A medical injector testing device according to claim 3, wherein the driving module (71) comprises a housing (711), a first motor (712) and a channel-changing member (713), the housing (711) is installed at the intersection of the first slideway (72) and the second slideway (73), and the first motor (712) is electrically connected with the processing module; the first motor (712) is fixedly arranged in the shell (711), the lane-changing piece (713) is rotationally connected to the shell (711), and the first motor (712) is in driving connection with the lane-changing piece (713); the inclined slideway (6) can be communicated with the first slideway (72) or the second slideway (73) by rotating the lane-changing piece (713).

5. The medical injector detection device according to claim 4, wherein the driving module (71) further comprises a sensor (74), the sensor (74) is fixedly disposed in the housing (711) and disposed near the first slideway (72), and the sensor (74) is electrically connected to the processing module.

6. The medical injector detection device according to claim 1, wherein the slidability module (2) further comprises a second motor (23) and a lead screw (24); a vertical sliding groove (11) is formed in the detector shell (1); the clamping plate (21) comprises an upper pressure plate (211) and a lower bearing plate (212); the upper pressing plate (211) and the lower bearing plate (212) both extend out of the sliding groove (11) and can slide along the sliding groove (11), and lugs of an injector can be placed between the upper pressing plate (211) and the lower bearing plate (212); the second motor (23) is arranged in the detector shell (1); the screw rod (24) is vertically arranged in the detector shell (1) and is in driving connection with the second motor (23); the upper pressure plate (211) is in threaded connection with the screw rod (24).

7. The medical injector testing device according to claim 6, wherein the slidability module (2) further comprises a resilient member (25), wherein the resilient member (25) is connected to the tester housing (1) at a bottom end thereof and to the lower plate (212) at a top end thereof.

8. The medical injector detecting device according to claim 6, characterized in that the claw (26) comprises an upper claw (261) and a lower claw (262), the upper claw (261) and the lower claw (262) are fixedly connected; the upper claw (261) and the lower claw (262) both extend out of the sliding groove (11) and both can slide along the sliding groove (11); the hand-resisting block of the injector can be arranged between the upper claw (261) and the lower claw (262).

9. The medical injector testing device according to claim 1, wherein the slidability module (2) further comprises a third motor (27), a gear (28) and a rack (29); the third motor (27) is arranged in the detector shell (1), and the gear (28) is in driving connection with the third motor (27); the clamping jaw (26) is fixedly arranged on the rack (29), and the rack (29) is meshed with the gear (28).

10. The medical injector detection device according to claim 1, wherein the variable resistance member (32) comprises a floating block (321) and two variable resistance sliding rods (322), the floating block (321) is made of an insulating material, the variable resistance sliding rods (322) are made of a conductive material, and the bottoms of the two variable resistance sliding rods (322) are mutually connected and fixedly connected to the floating block (321); one side of the water storage cylinder (4) is communicated with a vertical water level pipe (41); the floating block (321) is arranged in the water level pipe (41) in a sliding way and can move up and down along with the height change of the water level in the water level pipe (41); the two resistance-variable sliding rods (322) are respectively connected with the electric brush (31) in a sliding manner.