CN111855091A

CN111855091A - Negative pressure tester for tightness of syringe body

Info

Publication number: CN111855091A
Application number: CN202010763884.1A
Authority: CN
Inventors: 张宏涛; 韩生兰; 雷迪; 赵志杰; 王宸; 牛雯; 任戬
Original assignee: Qinghai Provincial Drug Inspection And Testing Institute
Current assignee: Qinghai Provincial Drug Inspection And Testing Institute
Priority date: 2020-08-01
Filing date: 2020-08-01
Publication date: 2020-10-30
Anticipated expiration: 2040-08-01
Also published as: CN111855091B

Abstract

The invention discloses a negative pressure tester for the tightness of a syringe body, and belongs to the technical field of medical instrument detection. A negative pressure tester for tightness of an injector body comprises a tester body, wherein a base plate is fixedly connected to the bottom of the tester body, a cylindrical barrel is fixedly connected to the base plate, a screw rod is rotatably connected to the cylindrical barrel, a first lower clamping plate is connected to the upper portion of the screw rod in a threaded manner, a first upper clamping plate is connected to the cylindrical barrel in a sliding manner, a first telescopic rod is fixedly connected to the first upper clamping plate, a second upper clamping plate is connected to the lower portion of the screw rod in a threaded manner, a second lower clamping plate is connected to the cylindrical barrel in a sliding manner, a second telescopic rod is fixedly connected to the second lower clamping plate, rotating rods are rotatably connected to the first upper clamping plate and the second lower clamping plate, and; the invention can clamp and release the injector only by screwing the screw rod, and automatically connects the head of the injector to the test air pipe after the stretching is finished, thereby avoiding fussy operation steps and improving the working efficiency.

Description

Negative pressure tester for tightness of syringe body

Technical Field

The invention relates to the technical field of medical instrument detection, in particular to a negative pressure tester for the tightness of a syringe body.

Background

The disposable sterile syringe is a device commonly used for clinical medical treatment, drugs needing to be injected are sucked into the syringe in advance and are applied to subcutaneous injection, national standards have strict and definite regulations on the product, and the body tightness of the disposable sterile syringe needs to be detected so as to ensure the product quality and the medication safety.

The existing detecting instrument is very complicated to fix the syringe, a plurality of parts are usually required to be fixed when the syringe is taken and placed, and the efficiency is low if the detecting instrument is used for detecting the syringe in large batch, so that the problem needs to be solved by the syringe body tightness negative pressure tester which is convenient for taking and placing the syringe.

Disclosure of Invention

The invention aims to solve the problem that the mass detection efficiency is low due to the complicated taking and placing process of an injector, and provides a negative pressure tester for the tightness of an injector body.

In order to achieve the purpose, the invention adopts the following technical scheme:

a negative pressure tester for the tightness of an injector body comprises a tester body, wherein a base plate is fixedly connected to the bottom of the tester body, a cylindrical barrel is fixedly connected to the base plate, a screw rod is rotatably connected to the cylindrical barrel, a first lower clamping plate is in threaded connection with the upper portion of the screw rod, a first upper clamping plate is in sliding connection with the cylindrical barrel, a first telescopic rod is fixedly connected to the first upper clamping plate, a fixed plate is fixedly connected to one end, away from the first upper clamping plate, of the first telescopic rod, the fixed plate is fixedly connected to the cylindrical barrel, a first spring is sleeved on the first telescopic rod, two ends of the first spring respectively abut against the first upper clamping plate and the fixed plate, a second upper clamping plate is in threaded connection with the lower portion of the screw rod, a second lower clamping plate is in sliding connection with the cylindrical barrel, a second lower clamping plate is fixedly connected to the second lower clamping plate, one end, away from the second lower clamping plate, of the, the second spring has been cup jointed on the second telescopic link, the both ends of second spring offset with second lower plate and bedplate respectively, it is connected with the bull stick all to rotate on first punch stick and the second lower plate, it is connected with the fixed block to rotate on the bull stick, fixedly connected with connecting box on the cylinder section of thick bamboo, fixedly connected with extension spring in the connecting box, the sealed piece of extension spring bottom fixedly connected with, fixedly connected with forcing pipe on the sealed piece, fixedly connected with support on the sealed piece, it is connected with the actuating lever to rotate on the support, the actuating lever rotates to be connected in the connecting box.

Preferably, the screw rod is fixedly connected with a rotating ring, and a rotating groove matched with the rotating ring is formed in the cylindrical barrel.

Preferably, the top of the screw is fixedly connected with a rotating handle.

Preferably, the first lower clamping plate and the second upper clamping plate are fixedly connected with circular ring blocks, and the circular ring blocks are in threaded connection with the screw rods.

Preferably, the first upper clamp plate and the second lower clamp plate are fixedly connected with extension blocks, the extension blocks are fixedly connected with stop blocks, and grooves matched with the extension blocks are formed in the cylindrical barrel.

Preferably, equal fixedly connected with first pivot on first punch holder and the second lower plate, the bull stick rotates to be connected on first pivot.

Preferably, the fixed block is fixedly connected with a second rotating shaft, and one end of the rotating rod, far away from the first rotating shaft, is rotatably connected to the second rotating shaft.

Preferably, the fixing block is provided with a semicircular groove.

Preferably, the upper part of the screw is provided with left-handed threads, and the lower part of the screw is provided with right-handed threads.

Preferably, the number of the rotating handles is six, and the six groups of rotating handles are uniformly distributed on the screw rod in a circumferential manner.

Compared with the prior art, the invention provides a negative pressure tester for the tightness of a syringe body, which has the following beneficial effects:

1. the negative pressure tester for the tightness of the syringe body has the advantages that the screwing directions of the upper part and the lower part of the screw rod are opposite, the first lower clamping plate and the second upper clamping plate synchronously move in the opposite directions when the screw rod rotates, the syringe handle is clamped between the first lower clamping plate and the first upper clamping plate, the piston handle is clamped between the second upper clamping plate and the second lower clamping plate, the first lower clamping plate and the second upper clamping plate are far away when the screw rod is screwed to rotate, the first upper clamping plate and the second lower clamping plate are respectively extruded, the rotating rods which are rotatably connected on the first upper clamping plate and the second lower clamping plate are both close to the cylindrical barrel and also pull the fixing blocks to be close to the cylindrical barrel, the fixing blocks are attached to the piston rod, the syringe is fixed, the top of the syringe gradually approaches the connecting box in the stretching process, the top of the syringe abuts against the driving rod to enable the driving rod to rotate, the driving rod is of, the sealing block is driven to move downwards to abut against the top of the injector to form a sealing state, the injector is pressed and tested through the pressurizing pipe communicated with the sealing block, the device can clamp and release the injector only by screwing the screw rod, complex operation steps are not needed, and the working efficiency is improved.

2. This syringe ware body driving fit negative pressure tester through fixedly connected with change on the screw rod, has seted up in the cylinder section of thick bamboo with change complex rotary trough, screw rod top fixedly connected with rotates the handle, rotates the quantity of handle specifically for six groups, and six groups rotate the handle and become the circumference equipartition on the screw rod, rotate the setting convenience of handle and carry out the rotation operation to the screw rod.

4. This syringe ware body driving fit negative pressure tester, through equal fixedly connected with ring piece on first lower plate and the second punch holder, ring piece threaded connection is on the screw rod, rotates the lift through the ring piece on the screw rod when the screw rod is rotatory and makes first lower plate and second punch holder realize going up and down.

5. This syringe ware body driving fit negative pressure tester, equal fixedly connected with extends the piece on through first punch holder and second lower plate, fixedly connected with dog on the extension piece, set up on the cylinder section of thick bamboo and extend a matched with groove, equal first pivot of fixedly connected with on first punch holder and the second lower plate, the bull stick rotates to be connected in first pivot, fixedly connected with second pivot on the fixed block, the one end that first pivot was kept away from to the bull stick rotates and connects in the second pivot, the half slot has been seted up on the fixed block, the dog makes the fixed sliding connection of first punch holder and second lower plate can not break away from on the cylinder section of thick bamboo, half slot and the laminating of syringe piston rod, its semicircular shape helps fixed firm.

6. This syringe body driving fit negative pressure tester is equipped with left-handed screw through the upper portion of screw rod, and the lower part of screw rod is equipped with right-handed screw, and two parts screw thread handedness difference about the screw rod make the screw rod when rotatory first lower splint opposite with the synchronous motion direction of second punch holder, pull open the syringe piston rod in this order.

Drawings

FIG. 1 is a schematic structural view of a negative pressure tester for testing the sealing performance of a syringe body according to the present invention;

FIG. 2 is a schematic structural view of a screw of the negative pressure tester for syringe body adhesion according to the present invention;

FIG. 3 is a schematic structural view of a fixing block of a negative pressure tester for tightness of a syringe body according to the present invention;

FIG. 4 is a schematic structural view of a first upper clamp plate of the negative pressure tester for syringe body adhesion according to the present invention;

FIG. 5 is a schematic structural view of a first lower plate of the negative pressure tester for syringe body adhesion according to the present invention;

FIG. 6 is a schematic structural view of a rotating rod of the negative pressure tester for tightness of syringe bodies according to the present invention;

fig. 7 is a schematic sectional view of the junction box of fig. 1.

In the figure: 1. a tester body; 101. a seat plate; 1011. a second telescopic rod; 1012. a second spring; 2. a cylindrical barrel; 201. a fixing plate; 2011. a first telescopic rod; 2012. a first spring; 202. a first upper splint; 2021. a first rotating shaft; 2022. an extension block; 2023. a stopper; 203. a first lower splint; 2031. a circular ring block; 204. a second upper splint; 205. a second lower splint; 206. a fixed block; 2061. a second rotating shaft; 2062. a semicircular groove; 207. a rotating rod; 3. a screw; 3001. left-handed threads; 3002. right-hand threads; 301. rotating the handle; 302. rotating the ring; 4. a connecting box; 401. a sealing block; 402. a pressurizing pipe; 403. a support; 4031. a drive rod; 404. a tension spring.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1, a negative pressure tester for tightness of a syringe body comprises a tester body 1, a base plate 101 is fixedly connected to the bottom of the tester body 1, a cylindrical barrel 2 is fixedly connected to the base plate 101, a screw rod 3 is rotatably connected to the cylindrical barrel 2, a first lower clamp plate 203 is connected to the upper portion of the screw rod 3 through a thread, a first upper clamp plate 202 is connected to the cylindrical barrel 2 through a sliding manner, a first telescopic rod 2011 is fixedly connected to the first upper clamp plate 202, a fixing plate 201 is fixedly connected to one end of the first telescopic rod 2011, which is far away from the first upper clamp plate 202, the fixing plate 201 is fixedly connected to the cylindrical barrel 2, a first spring 2012 is sleeved on the first telescopic rod 2011, two ends of the first spring 2012 respectively abut against the first upper clamp plate 202 and the fixing plate 201, a second upper clamp plate 204 is connected to the lower portion of the screw rod 3 through a thread, a second lower clamp plate 205 is connected to the, one end of a second telescopic rod 1011, which is far away from the second lower clamp plate 205, is fixedly connected to the seat plate 101, a second spring 1012 is sleeved on the second telescopic rod 1011, two ends of the second spring 1012 respectively abut against the second lower clamp plate 205 and the seat plate 101, a rotating rod 207 is rotatably connected to each of the first upper clamp plate 202 and the second lower clamp plate 205, a fixed block 206 is rotatably connected to the rotating rod 207, a connecting box 4 is fixedly connected to the cylindrical barrel 2, a tension spring 404 is fixedly connected to the inside of the connecting box 4, a sealing block 401 is fixedly connected to the bottom of the tension spring 404, a pressure pipe 402 is fixedly connected to the sealing block 401, a bracket 403 is fixedly connected to the sealing block 401, a driving rod 4031 is rotatably connected to the bracket 403, the driving rod 4031 is rotatably connected to the connecting box 4, when the device is turned by screwing the screw rod 3 to rotate reversely to turn the device, a rotating handle 301 arranged on the screw rod 3 is helpful to rotate the screw rod 3, after the device is loosened, a handle, the piston handle is placed between the second upper clamping plate 204 and the second lower clamping plate 205, the screw rod 3 is screwed to tighten the device, the upper part of the screw rod 3 is provided with a left-handed thread 3001, the lower part of the screw rod 3 is provided with a right-handed thread 3002, the first lower clamping plate 203 moves upwards in the rotation process of the screw rod 3, the first upper clamping plate 202 is extruded by the extrusion handle, the first spring 2012 moves upwards, the first spring 2012 generates resilience to abut against the first lower clamping plate 203 to clamp the handle, the second upper clamping plate 204 moves downwards to extrude the piston handle and extrude the second lower clamping plate 205, the second lower clamping plate 205 moves downwards to extrude the second spring 1012, the resilience of the second spring clamps the piston handle 1012, the first lower clamping plate 203 moves in the opposite direction to the second upper clamping plate 204 to pull out the piston rod of the injector from the syringe, and the rotating rod 207 which is rotatably connected to the first upper clamping plate 202 and the second lower clamping plate 205 rotates towards the direction close to the cylindrical barrel 2 simultaneously, the fixed block 206 rotatably connected to the rotating rod 207 also moves towards the cylinder 2, when the piston rod in the syringe is elongated to a specified length, the fixed block 206 just props against the syringe, so that the position of the syringe is fixed, the semicircular groove 2062 formed in the fixed block 206 is matched with the shape of the piston rod of the syringe, so that the syringe is fixed firmly, the top of the syringe gradually approaches the connecting box 4 in the stretching process, the top of the syringe abuts against the driving rod 4031, so that the driving rod 4031 rotates, the driving rod 4031 is of a telescopic structure, the left end of the driving rod 4031 rotates downwards when the driving rod 4031 rotates, so that the sealing block 401 is driven to move downwards to abut against the top of the syringe to form a sealing state, the syringe is subjected to a pressure test through the pressurizing pipe 402 communicated with the sealing block 401, after the test, the screw rod 3 is unscrewed, so that the fixed block 206 is far away from the cylinder 2, the first lower clamp plate 203 moves, the handle is released and the plunger handle is released as well, the top of the syringe now being moved away from the connecting box 4, the sealing block 401 being reset under the tension of the tension spring 404, and the syringe now being removed.

Example 2:

referring to fig. 2, basically the same as embodiment 1, further, a rotating ring 302 is fixedly connected to the screw rod 3, a rotating groove matched with the rotating ring 302 is formed in the cylindrical barrel 2, a rotating handle 301 is fixedly connected to the top of the screw rod 3, the number of the rotating handles 301 is specifically six, the six rotating handles 301 are circumferentially and uniformly distributed on the screw rod 3, and the rotating handle 301 is arranged to facilitate the rotating operation of the screw rod 3.

Example 3:

referring to fig. 5, substantially the same as embodiment 1, further, a ring block 2031 is fixedly connected to each of the first lower clamping plate 203 and the second upper clamping plate 204, the ring block 2031 is threadedly connected to the screw 3, and when the screw 3 rotates, the ring block 2031 rotates on the screw 3 to lift the first lower clamping plate 203 and the second upper clamping plate 204.

Example 4:

referring to fig. 1, 3, 4 and 6, substantially the same as embodiment 1, further, an extension block 2022 is fixedly connected to each of the first upper clamp 202 and the second lower clamp 205, a stopper 2023 is fixedly connected to the extension block 2022, a groove matched with the extension block 2022 is formed in the cylindrical barrel 2, a first rotating shaft 2021 is fixedly connected to each of the first upper clamp 202 and the second lower clamp 205, the rotating rod 207 is rotatably connected to the first rotating shaft 2021, a second rotating shaft 2061 is fixedly connected to the fixing block 206, one end of the rotating rod 207, which is far away from the first rotating shaft 2021, is rotatably connected to the second rotating shaft 2061, a semicircular groove 2062 is formed in the fixing block 206, the stopper 2023 enables the first upper clamp 202 and the second lower clamp 205 to be fixedly and slidably connected to the cylindrical barrel 2 without being separated, the semicircular groove 2062 is attached to the piston rod of the syringe, and the semicircular shape of the semicircular groove 206facilitates the fixing.

Example 5:

referring to fig. 2, substantially the same as embodiment 1, further, the upper portion of the screw 3 is provided with a left-handed thread 3001, the lower portion of the screw 3 is provided with a right-handed thread 3002, and the thread directions of the upper portion and the lower portion of the screw 3 are different, so that the synchronous movement directions of the first lower clamping plate 203 and the second upper clamping plate 204 are opposite when the screw 3 rotates, thereby pulling the syringe piston rod apart.

The working principle is as follows: in the invention, the screw thread directions of the upper part and the lower part of the screw rod 3 are opposite, when the screw rod 3 rotates, the first lower clamping plate 203 and the second upper clamping plate 204 synchronously move in opposite directions, the handle of the injector is clamped between the first lower clamping plate 203 and the first upper clamping plate 202, the piston handle is clamped between the second upper clamping plate 204 and the second lower clamping plate 205, when the screw rod 3 is rotated, the first lower clamping plate 203 and the second upper clamping plate 204 are far away, the first upper clamping plate 202 and the second lower clamping plate 205 are respectively extruded, the rotating rod 207 which is rotatably connected on the first upper clamping plate 202 and the second lower clamping plate 205 is close to the cylinder 2 and also pulls the fixed block 206 to be close to the cylinder 2, the fixed block 206 is attached to the piston rod, the top of the injector gradually approaches the connecting box 4 in the stretching process, the top of the injector is abutted to the driving rod 4031 to rotate the driving rod 4031, and the driving rod 403, when the driving rod 4031 rotates, the left end of the driving rod 4031 rotates downwards to drive the sealing block 401 to move downwards and abut against the top of the injector to form a sealing state, the injector is pressed and tested through the pressurizing pipe 402 communicated with the sealing block 401, the device can clamp and release the injector only by screwing the screw rod 3, complex operation steps are not needed, and the working efficiency is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The negative pressure tester for the tightness of the syringe body comprises a tester body (1) and is characterized in that a base plate (101) is fixedly connected to the bottom of the tester body (1), a cylindrical barrel (2) is fixedly connected to the base plate (101), a screw rod (3) is rotatably connected to the cylindrical barrel (2), a first lower clamping plate (203) is in threaded connection with the upper portion of the screw rod (3), a first upper clamping plate (202) is in sliding connection with the cylindrical barrel (2), a first telescopic rod (2011) is fixedly connected to the first upper clamping plate (202), a fixing plate (201) is fixedly connected to one end, away from the first upper clamping plate (202), of the first telescopic rod (2011), the fixing plate (201) is fixedly connected to the cylindrical barrel (2), a first spring (2012) is sleeved on the first telescopic rod (2011), two ends of the first spring (2012) are respectively abutted to the first upper clamping plate (202) and the fixing plate (201), the lower portion of the screw rod (3) is in threaded connection with a second upper clamping plate (204), the cylindrical barrel (2) is in sliding connection with a second lower clamping plate (205), a second telescopic rod (1011) is fixedly connected onto the second lower clamping plate (205), one end, away from the second lower clamping plate (205), of the second telescopic rod (1011) is fixedly connected onto the seat plate (101), a second spring (1012) is sleeved on the second telescopic rod (1011), two ends of the second spring (1012) are respectively abutted against the second lower clamping plate (205) and the seat plate (101), the first upper clamping plate (202) and the second lower clamping plate (205) are both rotatably connected with a rotating rod (207), the rotating rod (207) is rotatably connected with a fixed block (206), the cylindrical barrel (2) is fixedly connected with a connecting box (4), a tension spring (404) is fixedly connected into the connecting box (4), and a block (401) is fixedly connected to the bottom of the tension spring (404), fixedly connected with adds pressure pipe (402) on sealed piece (401), fixedly connected with support (403) on sealed piece (401), it has actuating lever (4031) to rotate on support (403), actuating lever (4031) rotates and connects in connecting box (4).

2. The negative pressure tester for testing the tightness of the syringe body according to claim 1, wherein a rotating ring (302) is fixedly connected to the screw rod (3), and a rotating groove matched with the rotating ring (302) is formed in the cylindrical barrel (2).

3. The negative pressure tester for testing the close fit of the syringe body as claimed in claim 2, wherein a rotary handle (301) is fixedly connected to the top of the screw rod (3).

4. The negative pressure tester for testing the fitness of the syringe body according to claim 1, wherein a ring block (2031) is fixedly connected to each of the first lower clamping plate (203) and the second upper clamping plate (204), and the ring block (2031) is in threaded connection with the screw rod (3).

5. The negative pressure tester for testing the close fit of the syringe body according to claim 1, wherein the first upper clamping plate (202) and the second lower clamping plate (205) are both fixedly connected with extension blocks (2022), the extension blocks (2022) are fixedly connected with stoppers (2023), and the cylindrical barrel (2) is provided with a groove matched with the extension blocks (2022).

6. The negative pressure tester for testing the close fit of the syringe body according to claim 5, wherein the first upper clamp plate (202) and the second lower clamp plate (205) are both fixedly connected with a first rotating shaft (2021), and the rotating rod (207) is rotatably connected to the first rotating shaft (2021).

7. The negative pressure tester for testing the tightness of the syringe body according to claim 6, wherein the fixed block (206) is fixedly connected with a second rotating shaft (2061), and one end of the rotating rod (207) far away from the first rotating shaft (2021) is rotatably connected with the second rotating shaft (2061).

8. The negative pressure tester for testing the tightness of the syringe body according to claim 7, wherein the fixing block (206) is provided with a semicircular groove (2062).

9. The negative pressure tester for testing the close fit of the syringe body according to claim 1, wherein the upper part of the screw (3) is provided with left-handed threads (3001), and the lower part of the screw (3) is provided with right-handed threads (3002).

10. The negative pressure tester for testing the close fit of the syringe body as claimed in claim 3, wherein the number of the rotating handles (301) is six, and six groups of the rotating handles (301) are circumferentially and uniformly distributed on the screw rod (3).