WO2023088347A1

WO2023088347A1 - Split-type protective syringe device

Info

Publication number: WO2023088347A1
Application number: PCT/CN2022/132483
Authority: WO
Inventors: 郭融; 沈靖
Original assignee: 上海倍莱弗科技有限公司
Priority date: 2021-11-19
Filing date: 2022-11-17
Publication date: 2023-05-25

Abstract

A split-type protective syringe device. A fixed shaft unit (1), a rotary outer tube unit (2) and an inner tube unit (3) are provided on a needle mounting tube (b), so that the syringe device can be used more efficiently, sanitarily, stably and conveniently. The split-type protective syringe device has the following advantages: firstly, the device provides both a sealing protection effect and a structural protection function for a needle (c) for injection, ensuring that the needle (c) is not easily bent and contaminated; secondly, the needle (c) can be opened simply by rotating the rotary outer tube unit (2) to enable the inner tube unit (3) to be automatically released and removed, and after use, even if only rotating and resetting the rotary outer tube unit (2), the requirement of covering the needle (c) for disposal can be achieved, so that the whole syringe device is quick and safe to use; and thirdly, the rotary outer tube unit (2) has a positioning function before and after rotating for opening, ensuring that it is not easily accidentally dropped during injection use and not easily accidentally opened when resetting for disposal.

Description

A split-type protective syringe device

technical field

The invention belongs to the technical field of medical appliances, in particular to a split-type protective syringe device.

Background technique

The syringe parts of the syringe mainly include a cylinder body, a needle mounting tube, a needle head and a needle cap. Among them, there are two main requirements for the protection of needles: 1. Structural protection to prevent it from being easily bent; 2. Sealing protection to prevent it from being polluted by bacteria and viruses.

technical problem

Therefore, for the existing common rubber tube type needle cap, its structural protection function is completely absent, and its sealing protection effect is not enough. Has a relatively high risk of falling.

Therefore, now there is a combined needle cap structure with hard tube protection and soft ring seal. For example, the patent announcement number is CN 209237057U, a Chinese utility model patent with an announcement date of 2019.08.13.

It discloses a closed syringe, including a needle, a syringe and a push rod, the needle includes a pintle and a needle barrel, and also includes a first sealing sleeve and a second sealing sleeve; the first sealing sleeve is sleeved outside the needle barrel, The first end of the first sealing sleeve moves axially along the needle pin on the outer wall of the needle pin and drives the second end of the first sealing sleeve to move along the needle stem; one end of the second sealing sleeve is closed and connected with the lower end of the push rod, and the other end Closed connection with the outer wall of the syringe.

Although the needle sealing sleeve structure in this utility model patent includes a tube body and a sealing ring, the overall protection effect is basically effective, but the biggest problem that follows is that the installation method of the entire sealing sleeve structure is still a simple socket, and its fall The risk of falling is still high, and when the syringe is discarded, it is necessary to retrieve the sealing sleeve structure, at least to cover the needle, at this time, the sealing sleeve structure is likely to be lost.

Therefore, it is necessary to connect the needle sleeve structure that already has the basic protective effect to the syringe, for example, the patent publication number is CN 107126602A, a Chinese invention patent with a publication date of 2017.09.05, discloses a flange cover flip device for fixing a syringe, which includes: a body, a friction member that can rotate relative to the body, and a hinged connection with the body to accommodate the syringe The fixed frame, and the protective cover set on the outside of the syringe, wherein the friction member includes an arc-shaped part, and the center of the arc-shaped part is concentric with the center of the body, and the body rotates relative to the fixed frame in the first direction and rotates in the first direction Hinge connection in the second direction.

However, the turning device for the syringe in this invention patent lacks the positioning function in the open state after it is opened, so when the syringe is being injected, the turning device tends to hang down or swing randomly, which will increase the pain of the injection operation It's very unsafe.

Moreover, the sealing effect on the needle also has the problem of insufficient strength, the entire sealing structure is too large, and the degree of sealing protection on the needle is not enough.

So to sum up, there is an urgent need to improve the structure of the needle cap so that it can meet at least the following two requirements: the structure and sealing effect are sufficient, and the opening and closing operation is simple and stable.

technical solution

The invention provides a split-type protective syringe device, which can make the use of the syringe device more efficient, hygienic, stable and efficient by setting a fixed shaft unit, a rotating outer tube unit, and an inner tube unit on the needle installation tube. convenient.

The technical solution adopted by the present invention to solve the above-mentioned problems is: a split-type protective syringe device, which includes a cylinder body, a needle installation tube, and a needle head, and also includes a fixed shaft unit arranged on the needle installation tube, which is hingedly arranged on the A rotating outer tube unit on the fixed shaft unit and used for structural protection of the needle, and an inner tube sleeved on the needle installation tube and located in the rotating outer tube unit and used for sealing and protecting the needle For the tube unit, the rotating outer tube unit performs a position-limiting and fixing operation on the inner tube unit before rotation, and pushes and removes the inner tube unit during rotation.

A further preferred technical solution is that: the fixed axis unit includes a fixed cylinder arranged on the needle installation tube and used to support the inner ring surface of the rotating outer tube unit, arranged on the fixed cylinder and used to hinge the The rotating shaft body of the rotating outer tube unit, and the closing and opening slots of the rotating outer tube unit which are arranged on the outer ring surface of the rotating shaft and are respectively used to engage the rotating outer tube unit before and after the rotation.

A further preferred technical solution is that: the number of the fixed shaft units is two, and the positional relationship is symmetrical to the center of the needle installation tube.

A further preferred technical solution is that: the rotating outer tube unit includes a round pipe body, which is arranged on the round pipe body and is used for inserting the installation hole of the rotation shaft body, and is arranged on the side of the installation hole for selecting An engaging block that snaps into the closing or opening slot, and a tube body opening that is arranged on the main body of the round tube and is used to rotate and move out the inner tube unit and the needle.

A further preferred technical solution is that: the rotating outer tube unit further includes a strip to be broken at two ends respectively arranged at two sides of the opening of the tube body and used for limiting and fixing the inner tube unit.

A further preferred technical solution is that: the rotating outer tube unit further includes an end groove disposed on the round tube main body and accommodating the cylindrical body after the round tube main body is rotated and opened.

A further preferred technical solution is that: the rotating outer tube unit further includes a deformation opening provided on the main body of the round tube and used to provide a retreat space for the engaging block.

A further preferred technical solution is that: the inner tube unit includes a soft tube body that is arranged in the main body of the round tube and is closed at one end, and is used to be sleeved on the needle installation tube, and is arranged outside the soft tube body The hard pipe body on the ring surface, and the protruding block arranged on the hard pipe body and used to receive the side of the open end of the pipe body to push against it.

A further preferred technical solution is: the inner pipe unit also includes installation alignment grooves arranged on the soft pipe body, the hard pipe body and the protruding block; the rotating outer pipe unit also includes The positioning block on the inner ring surface of the main body of the round pipe is used to engage with the installation alignment groove.

A further preferred technical solution is that: on the circular edge of the cylindrical body close to the rotating outer tube unit, there are arc-shaped cutouts for passing through the end corners on both sides of the end groove.

Beneficial effect

The present invention has the following advantages:

First, for injection needles, it has both sealing protection effect and structural protection function to ensure that the needles are not easy to be bent and polluted;

Second, to open the needle, you only need to rotate the outer round tube, and the inner sealing tube will be popped off automatically. After use, even if you just rotate and reset the outer round tube, it can meet the requirement of discarding the needle after it is covered. The whole syringe device is quick to use and safe;

Third, the rotating outer tube unit has a positioning function before and after the rotation and opening, ensuring that it is not easy to accidentally drop when injecting and use, and it is not easy to accidentally open when it is reset and scrapped;

Fourthly, the structural matching between the rotating outer tube unit and the inner tube unit is ingenious and efficient, the sealing tube bounces quickly and thoroughly, and the rotation angle of the outer round tube is sufficient to ensure sufficient injection operation space.

Description of drawings

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

Fig. 2 is a schematic diagram of the position and structure of the fixed shaft unit in the present invention.

Fig. 3 is a schematic structural diagram of the rotating outer tube unit in the present invention.

Fig. 4 is a schematic diagram of the position and structure of the end groove in the present invention.

Fig. 5 is an exploded view of the inner tube unit in the present invention.

In the accompanying drawings, the parts represented by each label are as follows: barrel a, needle installation tube b, needle c, fixed shaft unit 1, rotating outer tube unit 2, inner tube unit 3, fixed cylinder 101, and rotating shaft 102 , closing the card slot 103, opening the card slot 104, round pipe main body 201, mounting hole 202, engaging block 203, tube body opening 204, bar to be broken 205, end slot 206, opening 207 for deformation, soft tube body 301 , a hard pipe body 302 , a protruding block 303 , an installation alignment groove 304 , a positioning block 208 , and an arc-shaped cutout 4 .

Embodiments of the present invention

The following descriptions are only preferred embodiments of the present invention, and do not limit the scope of the present invention.

Embodiment: As shown in accompanying drawings 1-5, a split-type protective syringe device includes a cylinder body a, a needle installation tube b, and a needle c, and also includes a fixed shaft arranged on the needle installation tube b Unit 1, a rotating outer tube unit 2 hingedly arranged on the fixed shaft unit 1 and used for structural protection of the needle c, and sleeved on the needle installation tube b and located in the rotating outer tube unit 2 And the inner tube unit 3 used for sealing and protecting the needle c, the rotating outer tube unit 2 performs a limit and fix operation on the inner tube unit 3 before rotation, and performs a positioning operation on the inner tube unit 3 when rotating. Push to remove.

In this embodiment, the rotating outer tube unit 2 is flush with the barrel a before and after use of the syringe device, and forms an acute angle with the barrel a when in use. , which means that the rotating opening angle of the rotating outer tube unit 2 is an obtuse angle, which ensures sufficient injection operation space at the needle c.

Secondly, the material of the inner tube unit 3 needs a combination of soft and hard, and the soft part is used to clamp the needle installation tube b inwardly and the rotating outer tube unit 2 outwardly, so as to prevent the internal tube unit 3 from It is easy to slip and fall, and its hard part is used to receive the driving force of the rotating outer tube unit 2, so as to ensure that the inner tube unit 3 can be quickly bounced off and fall, so that the two tube body protection structures can be "one step". "mode" open, which is very important in the emergency of medical rescue.

Finally, the general usage method of the entire syringe device is as follows:

Rotate the rotating outer tube unit 2 first, and at the same time bounce the inner tube unit 3 to expose the needle c, and then continue to rotate until the rotating outer tube unit 2 faces backward, that is, the range of rotation is greater than 90° Finally, rotate it in place, and then perform the injection operation. After the injection operation is completed, the rotating outer tube unit 2 is reset by reverse rotation at last, so that it is still flush with the cylinder a, and the entire use operation is completed like this.

It should be noted that, before the rotating outer tube unit 2 is rotated and reset, it does not matter whether the inner tube unit 3 is re-sleeved on the needle installation tube b, if it is put on, the rotating outer tube unit 2 It can also be rotated and reset without affecting it, and the scrapping operation is safer. If it is not put on, the needle c also has the structural protection effect of the rotating outer tube unit 2, at least it will not hurt your hands.

The fixed axis unit 1 includes a fixed cylinder 101 arranged on the needle installation tube b and used to support the inner ring surface of the rotating outer tube unit 2, arranged on the fixed cylinder 101 and used to hinge the rotating The rotating shaft body 102 of the outer tube unit 2, and the closing and opening slots 103 and 103 of the rotating outer tube unit 2 which are arranged on the outer ring surface of the rotating shaft body 102 and respectively used to engage the rotating outer tube unit 2 before and after the rotation 104.

In this embodiment, when the rotating outer tube unit 2 is stuck on the closed slot 103, it corresponds to its two states of ready-to-use and finished use, and when it is stuck on the open slot 104, the rotating The outer tube unit 2 has been completely rotated, so the angle between the centerlines of the closing slot 103 and the opening slot 104 is greater than 90°.

In addition, the fixed cylinder 101 is thicker than the rotating shaft 102 to form a boss that supports and limits the rotating outer tube unit 2 to prevent the rotating outer tube unit 2 from Unnecessary looseness left and right.

The number of the fixed shaft units 1 is two, and the positional relationship is symmetrical to the center of the needle installation tube b.

In this embodiment, the two fixed cylinders 101 form a complete cylindrical shape together in space, that is, the two rotating shafts 102 are also a complete fixed shaft, ensuring that the entire rotation The rotation action of the outer tube unit 2 is more precise and stable.

The rotating outer pipe unit 2 includes a round pipe main body 201, which is arranged on the round pipe main body 201 and is used for inserting the installation hole 202 of the rotation shaft body 102, and is arranged on the side of the installation hole 202 for selecting one The engaging block 203 snapped into the closing slot 103 or opening slot 104, and the tube body opening 204 provided on the tube main body 201 and used to rotate and move out the inner tube unit 3 and the needle c.

In this embodiment, the tube body opening 204 needs to be rotated to move out of the inner tube unit 3, so it needs to be set relatively wide and long, and the two installation holes 202 correspond to the two rotation holes. The shaft body 102 and the engaging block 203 at the end move from the closing slot 103 to the opening slot 104 , and then return from the opening slot 104 to the closing slot 103 .

In addition, the shape of the mounting hole 202 is rectangular, one of the long sides of the rectangle is provided with the engaging block 203 , and the other long side of the rectangle is always fitted and clamped on the annular surface of the rotating shaft 102 , It is used to ensure the stability of the rotation of the circular tube main body 201 .

The rotating outer tube unit 2 also includes two ends of the to-be-broken bars 205 respectively arranged at two sides of the tube body opening 204 and used for limiting and fixing the inner tube unit 3 .

In this embodiment, the to-be-broken strip 205 can clamp the inner tube unit 3 inwardly, or a protrusion can be provided on the outer ring surface of the inner tube unit 3 to be used for being broken by the to-be-broken bar. The bar 205 "strangles" the limit, so as to ensure that the inner tube unit 3 is not easy to drop accidentally at least on the tube main body 201 .

However, at the initial stage of rotation of the round tube body 201, the to-be-broken bar 205 must be "broken" by the inner tube unit 3, so the to-be-broken bar 205 needs to be set relatively thin, and its breaking position can be Somewhere in the middle, or the connection end with the side of the opening 204 of the pipe body.

The rotating outer tube unit 2 also includes an end groove 206 arranged on the round tube body 201 and receiving the barrel a after the round tube body 201 is rotated open.

In this embodiment, if there is no end groove 206, the circular tube body 201 can rotate by 90° at most, which is very unfavorable for the injection operation, and the cylinder a snaps into the end groove 206, it proves that the tube main body 201 has rotated at least 90°.

The rotating outer tube unit 2 further includes a deformation opening 207 provided on the tube main body 201 and used for providing a retreat space for the engaging block 203 .

In this embodiment, when the engaging block 203 moves back and forth between the closing slot 103 and the opening slot 104, it must pass through the annular surface of the rotating shaft 102. If the installation If the hole 202 has high hardness and low springback, the engaging block 203 is easy to break directly.

Therefore, the opening 207 for deformation is provided so that the engaging block 203 has a relatively large safe deformation amount to ensure safe sliding back and forth between the closing slot 103 and the opening slot 104 .

The inner tube unit 3 includes a soft tube body 301 which is arranged in the circular tube body 201 and is closed at one end, and is used to be sleeved on the needle installation tube b, and is arranged on the outer ring surface of the soft tube body 301 The hard pipe body 302 on the top, and the protruding block 303 arranged on the hard pipe body 302 and used to receive the side of the end of the pipe body opening 204 for pushing.

In this embodiment, the outer ring surface of the flexible pipe body 301 is divided into grooves for engaging and fixing the hard pipe body 302, and the soft pipe body 301 elastically clamps the hard pipe body 302 inwardly. The needle installation tube b elastically clamps the round tube main body 201 outward to ensure that the inner tube unit 3 is not easy to fall off before work.

Secondly, the protruding block 303 is at the front end of the rotation direction of the side of the tube opening 204. After the tube body 201 starts to rotate, it first "breaks" the bar 205 to be broken, and then at least lets the The closed end of the flexible pipe body 301 is completely moved out of the pipe body opening 204, and finally the side of the end of the pipe body opening 204 pushes the protruding block 303, so that the inner pipe unit 3 can be "popped" to the ground. It pops open completely at once, and at this time the needle c is fully opened and exposed smoothly.

In addition, the protruding block 303 is the part where the strip to be broken 205 "strangles" the inner tube unit 3 to ensure that the inner tube unit 3 is more difficult to fall.

The inner pipe unit 3 also includes an installation alignment groove 304 arranged on the soft pipe body 301, the hard pipe body 302 and the protruding block 303; The positioning block 208 on the inner ring surface of the pipe main body 201 is used to engage with the installation and alignment groove 304 .

In this embodiment, the installation method of the inner pipe unit 3 is as follows: its sealed end is inserted from the hinge opening of the round pipe main body 201, and the positioning block 208 is aligned with the installation alignment groove 304 until the The protruding piece 303 passes over part of the pipe section of the circular pipe body 201 inside, and then is blocked and fixed by the to-be-broken bar 205 .

In addition, the specification of the protruding block 303 should not be too small, otherwise it will be directly broken by the side of the end of the tube body opening 204 instead of being pushed, bent, accumulating force, and finally springing off the inner tube unit 3 .

However, the larger protruding block 303 has the problem of a stable structure and is not easy to be bent to store force. Therefore, in this embodiment, the installation alignment groove 304 is provided to divide the protruding block 303 into two parts. Two, ensure that the two partitions of the protruding block 303 have the functions of being pushed, bent and accumulating force, and the bending range can be reduced by about half. After all, there are two forces to push and bounce the inner tube unit 3. This point is very ingenious.

On the circular edge of the cylindrical body a close to the rotating outer tube unit 2 , there are arc-shaped cutouts 4 for passing through the end corners on both sides of the end groove 206 .

In this embodiment, the outer end angles on both sides of the end groove 206 also need to rotate around the rotation shaft 102, so on the rotation path, there will be a collision with the cylinder a Therefore, setting the arc-shaped cutout 4 in a section can ensure a safe stagger between the end angle and the cylinder a, and the effective rotation of the rotating outer tube unit 2 is complete.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, within the scope of knowledge possessed by those of ordinary skill in the technical field, it can also be done without departing from the gist of the present invention. Make various modifications. These are all non-creative modifications, as long as they are all protected by the patent law within the scope of the claims of the present invention.

Claims

A split-type protective syringe device, comprising a cylinder body (a), a needle installation tube (b), and a needle head (c), characterized in that it also includes a fixed shaft arranged on the needle installation tube (b) Unit (1), a rotating outer tube unit (2) hingedly arranged on the fixed shaft unit (1) and used for structural protection of the needle (c), and sleeved on the needle installation tube (b) and an inner tube unit (3) located inside the rotating outer tube unit (2) and used to seal and protect the needle (c), the rotating outer tube unit (2) seals the inner tube unit before rotating (3) Carry out a limit fixing operation, and perform a pushing and removing operation on the inner tube unit (3) when rotating.
A separate protective syringe device according to claim 1, characterized in that: the fixed shaft unit (1) includes a unit arranged on the needle installation tube (b) and used to support the rotating outer tube unit (2) The fixed cylinder (101) on the inner ring surface is set on the fixed cylinder (101) and is used to hinge the rotating shaft (102) of the rotating outer tube unit (2), and is set on the fixed cylinder (101) on the outer ring surface of the rotating shaft (102) and are respectively used to engage the closing and opening slots (103) and opening slots (104) of the rotating outer tube unit (2) before and after rotation.
A split-type protective syringe device according to claim 1, characterized in that: the number of the fixed shaft units (1) is two, and the positional relationship is symmetrical to the center of the needle installation tube (b) .
A separate protective syringe device according to claim 2, characterized in that: the rotating outer tube unit (2) includes a round tube main body (201), which is arranged on the round tube main body (201) and used It is inserted into the installation hole (202) of the rotating shaft body (102), it is set on the side of the installation hole (202) and is used to select one of the closing slot (103) or the opening slot (104) The engaging block (203), and the tube body opening (204) arranged on the tube body (201) and used to rotate and move out the inner tube unit (3) and the needle (c).
A split-type protective syringe device according to claim 4, characterized in that: the rotating outer tube unit (2) also includes two ends respectively arranged on both sides of the tube body opening (204) and used The to-be-broken strip (205) of the inner tube unit (3) is fixed at a limited position.
A separate protective syringe device according to claim 4, characterized in that: the rotating outer tube unit (2) also includes a (201) rotates open and accommodates the end slot (206) of the barrel (a).
A split-type protective syringe device according to claim 4, characterized in that: the rotating outer tube unit (2) also includes a set on the tube main body (201) and is used to lock the The block ( 203 ) provides an opening ( 207 ) for deformation of the retraction space.
A separate protective syringe device according to claim 4, characterized in that: the inner tube unit (3) is arranged in the tube main body (201) with one end closed, and is used to cover the The soft tube body (301) on the needle installation tube (b), the hard tube body (302) set on the outer ring surface of the soft tube body (301), and the hard tube body (302) set on the hard tube body (302) and is used to receive the protruding block (303) on the side of the end of the pipe body opening (204) to push against it.
The split-type protective syringe device according to claim 8, characterized in that: the inner tube unit (3) also includes the soft tube body (301), hard tube body (302) and the mounting alignment groove (304) on the protruding block (303); the rotating outer tube unit (2) also includes a ring surface provided on the inner ring surface of the round tube main body (201) and used for engaging and docking the mounting Align block (208) with slot (304).
A split-type protective syringe device according to claim 6, characterized in that: on the circular edge of the cylinder (a) close to the rotating outer tube unit (2), there is a device for passing through Arc cuts (4) at the corners on both sides of the end slot (206).