CN114146260A

CN114146260A - Safe type cylinder device

Info

Publication number: CN114146260A
Application number: CN202111373904.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Beileifu Technology Co ltd
Current assignee: Shanghai Beileifu Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-03-08

Abstract

The invention belongs to the technical field of medical appliances, and particularly relates to a safe needle cylinder device. According to the invention, the syringe needle mounting tube, the injection needle, the rotary protection tube unit, the rotary shaft unit, the closed fixture block unit and the open fixture block unit are arranged on the barrel, so that the injection needle is ensured to be safe and stable before, during and after use. The invention has the following advantages: firstly, before the syringe device is used, the protective injection needle is stably sleeved by the rotary protective tube unit, the closed clamping and fixing effect is achieved, and the injection needle is not easily exposed accidentally; second, the cylinder device is when using, and rotatory protection tube unit is broken off with the fingers and thumb in the rotation, can open the syringe needle, and rotatory protection tube unit still has the fixed effect of the attitude block of opening moreover, is difficult for rotatory the drippage, does not influence normal injection operation.

Description

Safe type cylinder device

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to a safe needle cylinder device.

Background

The structure of the syringe generally comprises a syringe, a push rod and a needle sleeve, and the syringe can be divided into a barrel, a needle fixing tube, an injection needle and a protruding plate at the rear end of the barrel.

During the use of the prior syringe, the prior syringe has the following problems that can be easily found out:

firstly, before the syringe is not used, the needle sleeve has the risk of easy falling, once the syringe falls, the injection needle can puncture the packaging bag, the whole syringe is directly scrapped, but if the needle sleeve is designed to have high sleeving strength, the subsequent normal pulling-out use operation becomes very laborious;

secondly, when the injector is used, the needle sleeve is completely separated from the needle cylinder and is easy to lose and lose, after the injection operation is completed, the injector needs to be sleeved with the needle sleeve again in a scrapped state, and the needle sleeve is not used at the moment, so that the scrapped requirement needs to be additionally operated, such as bending and cutting off the injection needle, and the workload of medical personnel is greatly increased.

Therefore, in view of the above, there is an urgent need to improve the safety protection structure of the injection needle, so as to replace the conventional plastic soft cover, ensure that the safety protection structure is not easy to be accidentally opened and connected with the injector body, and most importantly, cannot affect the normal injection operation.

Patent publication number is CN 210159031U, and chinese utility model patent that the announcement day is 2020.03.20 discloses an injector for basic medicine, including the cylinder, the inside of cylinder is provided with the piston, the piston joint is at the right flank of base, the left surface fixedly connected with piston rod of base, the left end fixedly connected with stripper plate of piston rod.

However, in the syringe of the utility model, only a simple socket structure is arranged between the rubber hose and the first joint, so the strength of the socket structure is difficult to be grasped, and the risk of easy loss is also existed after the rubber hose is taken down, which affects the proceeding of the subsequent scrapping operation.

Chinese patent publication No. CN 107126602a, publication No. 2017.09.05, discloses a flange cover plate turnover device for fixing a needle cylinder, which includes: the friction piece comprises an arc-shaped part, the circle center of the arc-shaped part is concentric with the circle center of the body, and the body rotates relative to the fixed frame in a first direction and is hinged in a second direction.

However, the syringe inverting apparatus of the patent lacks a positioning function in an opened state after being opened, and therefore, the inverting apparatus is liable to hang down or swing freely when the syringe is subjected to an injection operation, which increases pain in the injection operation and is very unsafe.

Disclosure of Invention

The invention provides a safe syringe device, which can ensure that a syringe needle can be safe and stable in the front, middle and later periods of use by arranging a needle head mounting tube, the syringe needle, a rotary protection tube unit, a rotary shaft unit, a closed clamping block unit and an open clamping block unit on a barrel.

The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a safe type cylinder device, includes the barrel, syringe needle installation pipe to and syringe needle, still including the cover rotatory protection tube unit on syringe needle installation pipe and the syringe needle sets up on the syringe needle installation pipe and insert the rotation axis unit of rotatory protection tube unit sets up on the syringe needle installation pipe and be used for the block the closed attitude fixture block unit of rotatory protection tube unit, and set up and be in on the syringe needle installation pipe and be used for the block the open attitude fixture block unit of rotatory protection tube unit.

The further preferred technical scheme is as follows: the number of the rotating shaft units is 2, the closed-state fixture block units are located at the rear end position in the rotating direction of the rotating protection pipe units, and the open-state fixture block units are located at the front end position in the rotating direction of the rotating protection pipe units.

The further preferred technical scheme is as follows: the rotary protection tube unit comprises a tube body, the rotary protection tube unit is arranged on the tube body and used for being moved out in an outward rotating mode, a needle head opening of the injection needle is arranged on the tube body and respectively located at positions on two sides of the needle head opening and used for being inserted into two rotary holes of the rotary shaft unit, and the rotary protection tube unit is arranged on the tube body and used for being clamped into an end head groove of the needle head installation tube when the tube body is rotated to be opened.

The further preferred technical scheme is as follows: the rotary protection tube unit further comprises a clamping groove which is arranged on the needle head opening and used for clamping the closed clamping block unit.

The further preferred technical scheme is as follows: the rotary protection tube unit further comprises a protruding plate which is arranged in the end head groove and used for limiting and fixing the open-state clamping block unit.

The further preferred technical scheme is as follows: the closed clamping block unit comprises a radial clamping plate which is arranged on the needle mounting pipe and is used for being inserted into the clamping groove.

The further preferred technical scheme is as follows: the opening-state clamping block unit comprises a radial protruding plate arranged on the needle mounting pipe and a clamping plate arranged on the side surface of the barrel, wherein the clamping plate is close to the radial protruding plate.

The further preferred technical scheme is as follows: the rotation axis unit includes a base block disposed on the needle mounting tube and supporting the tube body, and a rotation axis body disposed on the base block and inserted into the rotation hole.

The further preferred technical scheme is as follows: the rotary protection tube unit also comprises a clamping block arranged in the rotary hole; the rotating shaft unit further comprises a closed positioning groove and an open positioning groove which are arranged on the rotating shaft body and are used for clamping and fixing the clamping blocks when the pipe body is closed and opened in a rotating mode.

The further preferred technical scheme is as follows: the rotary protection tube unit further comprises a deformation open hole which is arranged on the tube body and used for providing a backspacing space for the clamping block.

The further preferred technical scheme is as follows: the rotary protection tube unit further comprises an arc-shaped groove which is arranged on the needle head opening and is used for clamping the needle head installation tube when the tube body is rotated to be opened.

The invention has the following advantages:

firstly, before the syringe device is used, the protective injection needle is stably sleeved by the rotary protective tube unit, the closed clamping and fixing effect is achieved, and the injection needle is not easily exposed accidentally;

secondly, when the syringe device is used, the rotary protection tube unit is rotated and broken off, so that the injection needle can be opened, and the rotary protection tube unit also has the clamping and fixing effects in an opening state, is not easy to rotate and drop and does not influence the normal injection operation;

thirdly, after the syringe device is used, the direction of the rotary protection tube unit is rotated and reset, so that the injection needle can be covered and protected again, the scrapping operation of the whole injector is simple and convenient, and the rotary protection tube unit still has the effect of clamping and fixing in a closed state;

fourthly, the whole rotation and fixing structure matched with the rotation protection tube unit is high in stability, good in relevance, ingenious in structure matching and function matching, and stable and reliable in rotation using mode of the whole injection needle safety protection structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention in a closed state.

Fig. 2 is a schematic structural diagram of the present invention in an open state.

Fig. 3 is a schematic structural view of the rotary protection tube unit of the present invention.

Fig. 4 is a schematic view of the position structure of the terminal groove and the projecting plate in the present invention.

Fig. 5 is a schematic view of the position structures of the rotating shaft unit, the closed fixture block unit and the opened fixture block unit in the present invention.

In the drawings, the reference numerals denote the following components: the needle comprises a barrel body 11, a needle mounting tube 12, an injection needle 13, a rotary protection tube unit 1, a rotary shaft unit 2, a closed fixture block unit 3, an open fixture block unit 4, a tube body 101, a needle opening 102, a rotary hole 103, a tip groove 104, a clamping groove 105, a protruding plate 106, a radial clamping plate 301, a radial protruding plate 401, a clamping plate 402, a base block 201, a rotary shaft body 202, a clamping block 107, a closed positioning groove 203, an open positioning groove 204, a deformation opening 108 and an arc-shaped groove 109.

Detailed Description

The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Example (b): as shown in fig. 1 to 5, the safety syringe device includes a barrel 11, a needle mounting tube 12, an injection needle 13, a rotary protection tube unit 1 sleeved on the needle mounting tube 12 and the injection needle 13, a rotary shaft unit 2 disposed on the needle mounting tube 12 and inserted into the rotary protection tube unit 1, a closed fixture block unit 3 disposed on the needle mounting tube 12 and used for clamping the rotary protection tube unit 1, and an open fixture block unit 4 disposed on the needle mounting tube 12 and used for clamping the rotary protection tube unit 1.

In this embodiment, one side of the injection needle 13 is a front end, one side of the barrel 11 is a rear end, the rear end of the rotation protection tube unit 1 is always hinged to the rotation axis unit 2, and the rotation protection tube unit 1 is aligned with the barrel 11, so that the injection needle 13 can be protected by a sealing cover, and the barrel device is not used or in a used state, at this time, the rotation protection tube unit 1 is connected with the closed-state fixture block unit 3 in a clamping manner, and on the premise that the force required for opening the rotation protection tube unit 1 in a rotating manner is slightly increased, a relatively large fixing strength of the rotation protection tube unit 1 can be obtained.

In addition, the front end of the rotating shaft unit 2 rotates backwards towards one side of the barrel body 11 to be opened until the injection needle 13 is completely exposed, and at the moment, the rotating protection tube unit 1 is connected with the opening-state clamping block unit 4 in a clamping mode, so that the rotating opening state is not easy to rotate and retract, and otherwise, the injection operation is interfered.

Finally, the complete rotation opening angle of the rotary protection tube unit 1 is an obtuse angle, so that the rotary protection tube unit 1 is prevented from mistakenly touching the skin of a patient during injection operation, and a sufficient injection operation space is ensured.

The number of the rotating shaft units 2 is 2, the closed fixture block unit 3 is located at the rear end position of the rotating protection tube unit 1 in the rotating direction, and the open fixture block unit 4 is located at the front end position of the rotating protection tube unit 1 in the rotating direction.

In this embodiment, the rotating shaft units 2 are hinged to both sides of the rotating protection tube unit 1, so as to ensure that the rotating motion of the rotating protection tube unit 1 is more stable and rotates only in one plane, and the acting positions of the closed latch unit 3 and the open latch unit 4 on the rotating protection tube unit 1 are also symmetrical and centered with respect to the two hinged positions of the rotating protection tube unit 1.

Therefore, the two rotation axis units 2 form a complete rotation axis in space, and the closed state latch unit 3 and the open state latch unit 4 are symmetrical about the rotation axis.

The rotary protection tube unit 1 comprises a tube body 101, a needle port 102 arranged on the tube body 101 and used for moving out the injection needle 13 in an outward rotating manner, two rotary holes 103 arranged on the tube body 101 and respectively located at two sides of the needle port 102 and used for inserting and installing the rotary shaft unit 2, and a tip groove 104 arranged on the tube body 101 and used for clamping the needle mounting tube 12 when the tube body 101 is opened in a rotating manner.

In this embodiment, the needle port 102 is a position where the injection needle 13 is rotated and removed, and therefore the length of the needle port 102 in the front-rear direction needs to be relatively large, and the position, shape, and size of the rotation hole 103 correspond to those of the rotation shaft unit 2.

In addition, since the rotation angle of the tube 101 is generally obtuse, a rim of the rear end of the tube 101 is directly against the barrel 11 if not grooved, and the rotation of the tube 101 by 90 ° at most greatly affects the operating space of the needle 13, which is the purpose of opening the tip groove 104.

Finally, the safety protection effect of the rotary protection tube unit 1 on the injection needle 13 is only covering protection without sealing, so that the whole safety syringe device has the following use modes under the requirement of sealing and protecting the needle head:

firstly, a sealed plastic outer package is arranged outside the whole needle cylinder device;

secondly, a rubber sleeve is arranged in the tube body 101, is sleeved on the needle mounting tube 12 and hermetically protects the injection needle 13, and is pulled out from the opening at the front end of the tube body 101 before the rotary protection tube unit 1 is rotated to be opened, so that when the injector is scrapped, the rubber sleeve is not needed, and after all, the scrapped state only needs to ensure that the needle cannot pierce an operator;

thirdly, the front end of the tube body 101 is closed, the plastic film is arranged at the needle port 102, and the plastic film can be punctured by the injection needle 13 in a rotating manner, so that the sealing effect on the injection needle 13 is high in strength and comprehensive, the plastic film is also sufficient in a specific use scene, but the plastic film is not completely sealed, and a gap is still formed at the hinged position of the rear end of the tube body 101.

The rotary protection tube unit 1 further comprises a clamping groove 105 which is arranged on the needle port 102 and used for clamping the closed clamping block unit 3. The rotary protection tube unit 1 further comprises a protruding plate 106 which is arranged in the head groove 104 and used for limiting and fixing the open-state clamping block unit 4.

In this embodiment, the closed fixture block unit 3 needs to cross over a part of the pipe section of the pipe body 101 at the inner side of the pipe to be clamped into the clamping groove 105, and the open fixture block unit 4 needs to cross over the protruding plate 106 to ensure the clamping and fixing effect on the rotary protection pipe unit 1, and in addition, when the pipe body 101 is rotated and retracted, the open fixture block unit 4 may cross over the protruding plate 106 or be directly broken.

In addition, when the closed state clamping block unit 3 is clamped in the clamping groove 105, the tube body 101 is flush with the tube body 11, so that the direction of the limiting force of the closed state clamping block unit 3 on the clamping groove 105 is towards the rear end, and when the open state clamping block unit 4 is clamped in the protruding plate 106, the rotation protection tube unit 1 is rotated and opened to an inclined angle, so that the direction of the fixing force of the open state clamping block unit 4 on the protruding plate 106 is also inclined backwards.

The closed cartridge unit 3 includes a radial engaging plate 301 disposed on the needle mounting tube 12 and inserted into the engaging groove 105.

In this embodiment, the closed fixture block unit 3 further includes a radial inner pad disposed on the needle mounting tube 12, and the radial inner pad and the radial clamping plate 301 together form an L-shaped structure, so as to ensure that the tube 101 is not accidentally unfolded in an outward rotation manner and cannot rotate inward any more at the position of the closed fixture block unit 3, and the radial inner pad is used to completely fix the tube 101, so that the tube 101 is flush with the tube 11.

The open cartridge unit 4 includes a radially protruding plate 401 disposed on the needle mounting tube 12, and a snap-in plate 402 disposed on a side surface of the radially protruding plate 401 close to the barrel 11.

In this embodiment, the radial protruding plate 401 and the snap-in plate 402 together form an L-shaped "hook" structure for stable "hooking" of the protruding plate 106.

The rotation shaft unit 2 includes a base block 201 provided on the needle mounting tube 12 to support the tube 101, and a rotation shaft body 202 provided on the base block 201 to be inserted into the rotation hole 103.

In this embodiment, the base block 201 is used to continuously jack up the tube 101 to prevent the tube 101 from being displaced in the longitudinal direction of the rotating shaft unit 2, and the rotating shaft 202 is inserted into the rotating hole 103 to jointly form a hinge portion of the tube 101.

The rotation protection tube unit 1 further includes an engaging block 107 provided in the rotation hole 103; the rotation axis unit 2 further includes a closed-state positioning groove 203 and an open-state positioning groove 204 that are provided in the rotation axis body 202 and that respectively engage and fix the engagement block 107 when the tube body 101 is closed and rotated open.

In this embodiment, the fixing effect of the tube 101 in the closed state and the open state is not only ensured by the outside of the locking groove 105 and the protruding plate 106, but also ensured by the locking effect of the locking block 107 on the closed state positioning groove 203 and the open state positioning groove 204, and the tube 101 is not accidentally opened or accidentally closed in the mode of locking the locking block 107 inside and outside.

In addition, the shape of the rotation hole 103 is rectangular, one long side is provided with the engaging block 107, and the other long side is always attached to the annular surface of the rotation shaft body 202, so that the rotation opening and closing action of the pipe body 101 is finally guaranteed to be stable.

The rotation protection tube unit 1 further includes a deformation opening 108 provided in the tube body 101 and configured to provide a retraction space for the engagement block 107.

In this embodiment, a portion of the annular surface of the rotating shaft 202 is located between the closed-state positioning slot 203 and the open-state positioning slot 204, and when the engaging block 107 is switched to engage with the closed-state positioning slot 203 and the open-state positioning slot 204, the engaging block 107 has to go over the annular surface, so that a certain deformation retraction capability is required at the engaging block 107, otherwise, the engaging block 107 is directly broken, which is the function of the deformation opening 108.

The protective tube unit 1 further comprises an arc-shaped groove 109 which is arranged on the needle opening 102 and is provided with the snap groove 105 and is intended to snap into the needle mounting tube 12 when the tube body 101 has been rotated open.

In this embodiment, after the tube 101 is fully rotated and opened, the needle mounting tube 12 moves to the rear opening side of the needle port 102, so that the arc-shaped groove 109 is provided for engaging with the needle mounting tube 12, where the engaging effect is an auxiliary fixing part of the opened state of the tube 101.

Accordingly, the locking groove 105 is disposed on the arc-shaped groove 109.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.

Claims

1. A safe syringe device comprises a syringe body (11), a needle mounting tube (12) and an injection needle (13), and is characterized in that: still including the cover rotatory protection tube unit (1) on syringe needle installation pipe (12) and syringe needle (13) sets up on syringe needle installation pipe (12) and insert rotation axis unit (2) of rotatory protection tube unit (1) set up on syringe needle installation pipe (12) and be used for the block closed state fixture block unit (3) of rotatory protection tube unit (1), and set up on syringe needle installation pipe (12) and be used for the block open state fixture block unit (4) of rotatory protection tube unit (1).

2. The safety syringe apparatus of claim 1 wherein: the number of the rotating shaft units (2) is 2, the closed fixture block unit (3) is located at the rear end position in the rotating direction of the rotating protection pipe unit (1), and the open fixture block unit (4) is located at the front end position in the rotating direction of the rotating protection pipe unit (1).

3. The safety syringe apparatus of claim 2 wherein: rotatory protection tube unit (1) includes body (101), sets up on body (101) and be used for outside rotation to move out needle mouth (102) of syringe needle (13) set up on body (101) and be located respectively needle mouth (102) both sides position department and be used for inserting the installation two rotatory holes (103) of rotation axis unit (2), and set up on body (101) and body (101) have been used for the card to go into when rotatory opening end groove (104) of needle installation pipe (12).

4. A safety syringe apparatus according to claim 3, wherein: the rotary protection tube unit (1) further comprises a clamping groove (105) which is arranged on the needle head opening (102) and used for clamping the closed clamping block unit (3).

5. A safety syringe apparatus according to claim 3, wherein: the rotary protection tube unit (1) further comprises a protruding plate (106) which is arranged in the end head groove (104) and used for limiting and fixing the open-state clamping block unit (4).

6. The safety syringe apparatus of claim 4 wherein: the closed clamping block unit (3) comprises a radial clamping plate (301) which is arranged on the needle mounting tube (12) and is inserted into the clamping groove (105).

7. The safety syringe apparatus of claim 5 wherein: the open-state clamping block unit (4) comprises a radial protruding plate (401) arranged on the needle mounting tube (12) and a clamping plate (402) arranged on the radial protruding plate (401) and close to the side face of the barrel body (11).

8. A safety syringe apparatus according to claim 3, wherein: the rotation shaft unit (2) includes a base block (201) provided on the needle mounting tube (12) and supporting the tube body (101), and a rotation shaft body (202) provided on the base block (201) and inserted into the rotation hole (103).

9. The safety syringe apparatus of claim 8 wherein: the rotary protection tube unit (1) further comprises a clamping block (107) arranged in the rotary hole (103); the rotating shaft unit (2) further comprises a closed positioning groove (203) and an open positioning groove (204) which are arranged on the rotating shaft body (202) and are used for clamping and fixing the clamping block (107) when the pipe body (101) is closed and opened in a rotating mode.

10. The safety syringe apparatus of claim 9 wherein: the rotary protection tube unit (1) further comprises a deformation open hole (108) which is arranged on the tube body (101) and used for providing a retraction space for the clamping block (107).