A sealed protection type syringe device

Abstract

The present invention belongs to the technical field of medical appliances, and particularly relates to a sealed protection type syringe device. By means of arranging an installation shaft body unit, a soft needle tube unit, a protection tube unit, a hard tube unit and a clamping plate unit on the connecting tube, the whole syringe device can be ensured to be safe, stable and reliable before use, during use and after use. The present invention has the following advantages: First, during syringe assembly, the soft needle tube unit and the hard tube unit together form the inner tube, and the protection tube unit is the outer tube. It is convenient to align and install the two, and finally the outer tube is sleeved on the installation shaft body unit to complete the whole installation operation. The overall installation effect is accurate and reliable; Second, before use, the inner tube and the outer tube are clamped with each other, so that the outer tube is not easily rotated accidentally and the inner tube is not easily slipped accidentally. The needle has both sealed protection and structural protection.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical appliances, and particularly relates to a sealed protection type syringe device. Background Art

[0002] The syringe barrel mainly includes a barrel for containing medicine, a syringe needle, and a connecting installation tube between the two. Matched with the syringe barrel are a needle sleeve and a push rod, which together form a complete syringe.

[0003] However, on the other hand, the existing needle sleeve structure is just a rubber soft sleeve, so it is easy to fall off on the connecting installation tube. If it falls off before the syringe is used, even if it is loose, the needle will be contaminated by bacteria and viruses, and the whole syringe will be directly scrapped. And if the socket strength is insufficient after the syringe is used, resulting in looseness, at this time the outer packaging bag of the syringe has been lost, so the soft sleeve looseness will surely cause it to fall off. At this time, the needle is directly exposed, seriously endangering the health of the syringe scrapping disposal operators.

[0004] Therefore, there is an urgent need to improve the needle sleeve structure so that it is not just an elastic socket installation method, ensuring that the new needle sleeve structure is not easy to loosen before and after the syringe is used.

[0005] For example, the Chinese invention patent with the patent publication number CN 110604844A and the publication date of December 24, 2019 discloses a non-rotating loading syringe barrel and syringe system with a pressure sleeve, including: a syringe barrel body, a piston, a protection sleeve main body, a protection sleeve end cover, and a push rod. The syringe barrel body is composed of a distal end of the barrel, a proximal end of the barrel, and a central section of the barrel. The distal end of the barrel is composed of an injection neck and a conical surface. The central section of the barrel is a whole section of the barrel with the same outer diameter and inner diameter. The proximal end of the barrel is composed of the barrel of the central section of the barrel and an interface with several grooves. The barrel is fixedly engaged with the protection sleeve through the interface with grooves. The piston is composed of a conical surface, a sealing ring, a step for clamping the sealing ring, and a circular stepped boss. The sealing ring cooperates with the step for clamping the sealing ring, and the push rod is locked with the boss through a step.

[0006] However, for the syringe barrel in this invention patent, its needle protection sleeve structure has the problem of many opening operation steps, and the overall use effect is not convenient enough.

[0007] Therefore, to sum up, there is an urgent need for a new needle sleeve structure with comprehensive needle protection effect, fast opening operation, and not easy to fall off before and after use. Summary of the Invention

[0008] The present invention provides a sealed protection syringe device, which can ensure the safety, stability and reliability of the entire syringe device before use, during use and after use by setting an installation shaft body unit, a soft needle tube unit, a protection tube unit, a hard tube unit and a clamping plate unit on the connecting tube.

[0009] The technical solution adopted by the present invention to solve the above problems is: a sealed protection syringe device, including an installation shaft body unit arranged on the connecting tube, a soft needle tube unit sleeved on the connecting tube, a protection tube unit arranged on the installation shaft body unit and outside the soft needle tube unit, a hard tube unit arranged on the soft needle tube unit and inside the protection tube unit and used to receive the pushing and springing force after the rotation of the protection tube unit, and a clamping plate unit arranged on the connecting tube and used to insert and fix the protection tube unit that has been rotated and opened.

[0010] A further preferred technical solution lies in that: the installation shaft body unit includes a fixed column arranged on the connecting tube and used to radially outwardly jack up and limit the inner ring surface of the protection tube unit, and a rotating cylinder arranged on the fixed column and used to insert into the protection tube unit.

[0011] A further preferred technical solution lies in that: the soft needle tube unit includes a hose main body with one end sealed and the other end sleeved on the connecting tube and used to protect the needle, and an annular groove arranged on the outer ring surface of the hose main body and used to install the hard tube unit.

[0012] A further preferred technical solution lies in that: the protection tube unit includes a circular tube body, a circular hole arranged at one end of the circular tube body and used to insert and install the rotating cylinder, and an operation opening arranged on the circular tube body and used to rotate and remove the soft needle tube unit.

[0013] A further preferred technical solution lies in that: the hard tube unit includes an outer sleeve arranged on the annular groove, and a to-be-pushed block arranged on the outer sleeve and protruding outward on the operation opening.

[0014] A further preferred technical solution lies in that: the protection tube unit further includes an end head groove arranged on the operation opening and used to push and squeeze the to-be-pushed block.

[0015] A further preferred technical solution lies in that: the protection tube unit further includes a to-be-broken strip arranged on the operation opening and used to engage the to-be-pushed block at the front end in the springing direction of the soft needle tube unit.

[0016] A further preferred technical solution is that: the protection tube unit further includes a head receiving groove provided on the circular tube body and adapted to be snapped into the end head of the cylinder body after the circular tube body has been rotated and opened, and a protruding strip provided on the head receiving groove and adapted to be snapped into the engaging plate unit.

[0017] A further preferred technical solution is that: the engaging plate unit includes a radially extending plate provided on the connecting tube, and a bent plate provided on the radially extending plate and adapted to be snapped inside the protruding strip.

[0018] A further preferred technical solution is that: the rigid tube unit further includes an alignment groove provided on the outer circumferential surface of the outer sleeve and passing through the to-be-pushed block; the protection tube unit further includes an alignment block provided on the inner circumferential surface of the circular tube body.

[0019] The present invention has the following advantages:

[0020] First, during the assembly of the syringe, the soft needle tube unit and the rigid tube unit together form the inner tube, and the protection tube unit serves as the outer tube. It is convenient to align and install the two. Finally, the outer tube is sleeved onto the mounting shaft body unit, and the entire installation operation can be completed. The overall installation effect is accurate and reliable.

[0021] Second, before use, the inner tube and the outer tube are clamped to each other, making it difficult for the outer tube to rotate accidentally and the inner tube to slip accidentally. The needle has both sealing protection and structural protection.

[0022] Third, during use, with just one rotation action of the outer tube, the inner tube can be first moved out and then sprung open. Finally, the outer tube is fixed by the engaging plate unit, ensuring that the injection operation is fast and stable.

[0023] Fourth, after use, the inner tube first sleeves the connecting tube, and then the outer tube rotates reversely to reset to the state before use, still having all the advantages before use. The use effect of the entire syringe device is efficient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the present invention.

[0025] Figure 2 is a schematic diagram of the rotation and opening usage mode of the syringe device in the present invention.

[0026] Figure 3 is a position structural schematic diagram of the mounting shaft body unit and the engaging plate unit in the present invention.

[0027] Figure 4 is an exploded view of the inner tube in the present invention.

[0028] Figure 5 is a structural schematic diagram of the protection tube unit in the present invention.

[0029] Figure 6 This is a schematic diagram of the position structure of the end - head receiving groove in the present invention.

[0030] In the attached drawings, the components represented by each reference numeral are as follows: connecting pipe a, mounting shaft body unit 1, soft needle tube unit 2, protective tube unit 3, hard tube unit 4, engaging plate unit 5, fixing column 101, rotating cylinder 102, needle b, hose main body 201, annular groove 202, circular tube body 301, circular hole 302, operating opening 303, outer sleeve 401, to - be - pushed block 402, end - head groove 304, to - be - broken strip 305, cylinder c, end - head receiving groove 306, protruding strip 307, radially extending plate 501, bent plate 502, alignment groove 403, alignment block 308. Specific Embodiment

[0031] The following description is only for the preferred embodiments of the present invention and does not limit the scope of the present invention.

[0032] Embodiment: As shown in the attached Figure 1-6 drawings, a sealed - protection syringe device, characterized in that: it includes a mounting shaft body unit 1 arranged on the connecting pipe a, a soft needle tube unit 2 sleeved on the connecting pipe a, a protective tube unit 3 arranged on the mounting shaft body unit 1 and located outside the soft needle tube unit 2, a hard tube unit 4 arranged on the soft needle tube unit 2 and located inside the protective tube unit 3 and used to receive the pushing and spring - opening force after the rotation of the protective tube unit 3, and an engaging plate unit 5 arranged on the connecting pipe a and used to insert and fix the rotated - open protective tube unit 3.

[0033] In this embodiment, the materials of the mounting shaft body unit 1, the protective tube unit 3, the hard tube unit 4, and the engaging plate unit 5 are all medical - grade PP, and the material of the soft needle tube unit 2 is medical - grade TPE.

[0034] Among them, the soft needle tube unit 2 and the hard tube unit 4 are assembled together at the factory, which is the inner tube for sealing, and the protective tube unit 3 is the outer tube for protection and anti - collision. The protective tube unit 3 rotates and opens on the mounting shaft body unit 1, while the inner tube still sleeved on the connecting pipe a. Therefore, the two rotate and stagger each other, so that the protective tube unit 3 can push the hard tube unit 4, and finally the inner tube is sprung off from the connecting pipe a for subsequent injection operations. In this process, there is only a rotation action of the protective tube unit 3 without other additional action requirements, so it shows that the syringe opening operation is very simple and fast.

[0035] After the inner tube is sprung off, the protective tube unit 3 continues to rotate and finally gets stuck on the engaging plate unit 5. At this time, the injection operation can be carried out.

[0036] After the injection operation is completed, first put the inner tube back onto the connecting tube a, then rotate the protection tube unit 3. Immediately, the engagement with the engaging plate unit 5 is released, and then continue to rotate until the inner tube is reinserted into the protection tube unit 3. In this way, the general structure of the syringe device returns to its state before use, ensuring that it has the dual effects of needle tip sealing and needle tip protection both before and after use. In this way, the needle tip is not easily bent or contaminated. For the syringe in the scrapping stage, it means that the harmful blood of the patient that may remain on the needle tip is not easily spilled outwards, which is very safe and necessary.

[0037] The mounting shaft body unit 1 includes a fixing column 101 provided on the connecting tube a and used to radially push up and limit the inner ring surface of the protection tube unit 3, and a rotating cylinder 102 provided on the fixing column 101 and used to insert into the protection tube unit 3.

[0038] In this embodiment, the two rotating cylinders 102 are aligned, and their function is equivalent to that of a fixed circular shaft body, which can ensure the effective rotation of the protection tube unit 3. The function of the fixing column 101 to push up and limit the protection tube unit 3 can also greatly reduce the unnecessary left - right sliding of the protection tube unit 3 on the circular shaft body.

[0039] The soft needle tube unit 2 includes a hose main body 201 with one end sealed and the other end sleeved on the connecting tube a and used to protect the needle b, and an annular groove 202 provided on the outer ring surface of the hose main body 201 and used to mount the hard tube unit 4.

[0040] In this embodiment, the hose main body 201 needs to clamp the connecting tube a tightly enough inward and the protection tube unit 3 tightly enough outward so that the entire inner tube will not accidentally slip easily. Therefore, raised clamping rings can be provided on the inner and outer ring surfaces of the hose main body 201.

[0041] In addition, blocks and grooves can be provided in the annular groove 202 to cooperate with the grooves and blocks of the hard tube unit 4 to ensure that the inner tube composed of the soft needle tube unit 2 and the hard tube unit 4 has sufficient structural strength and is not easily disassembled accidentally.

[0042] The protection tube unit 3 includes a circular tube body 301, a circular hole 302 provided at one end of the circular tube body 301 and used to insert and mount the rotating cylinder 102, and an operating opening 303 provided on the circular tube body 301 and used to rotate and remove the soft needle tube unit 2.

[0043] In this embodiment, the length of the operating opening 303 needs to be appropriately larger than the length of the inner tube, and its width is set to 60-80% of the outer diameter of the inner tube to ensure that the inner tube can be effectively moved out at the operating opening 303, but cannot be moved out too easily.

[0044] The hard tube unit 4 includes an external sleeve 401 disposed on the annular groove 202 , and a to-be-pushed block 402 disposed on the external sleeve 401 and protruding outwardly from the operation opening 303 .

[0045] In this embodiment, if the entire inner tube is soft, the operating opening 303, that is, the circular tube body 301 cannot push or pop open the inner tube, and can only flatten it. If the entire inner tube is hard, the inner tube cannot clamp the connecting tube a with high strength, and the sealing effect on the needle b is also insufficient. Therefore, a "soft + hard" combination structure is adopted.

[0046] The push block 402 protrudes outward to ensure that the inner end surface of the operating opening 303 can push it as soon as possible and fully, ensuring sufficient pushing force accumulation strength, so that the inner tube can be ejected and the entire needle b can be exposed.

[0047] The protection tube unit 3 further includes an end slot 304 disposed on the operation opening 303 and used for pushing the to-be-pushed block 402 .

[0048] In this embodiment, the block to be pushed 402 has an arc-shaped pushing surface, so the arc-shaped end groove 304 is provided to ensure that the force transmitted from the circular tube 301 to the block to be pushed 402 is more direct and symmetrical.

[0049] The protection tube unit 3 further includes a to-be-broken strip 305 disposed on the operation opening 303 and used to engage the to-be-pushed block 402 at the front end of the soft needle tube unit 2 in the springing direction.

[0050] In this embodiment, the strip 305 to be broken is broken by the outer sleeve 401 at the beginning of the rotation of the circular tube 301, so it does not affect the rotation and opening of the circular tube 301, and the strip 305 to be broken also needs to be set relatively thin.

[0051] Before the syringe is used, the role of the strip 305 to be broken is to assist in clamping the inner tube to prevent it from slipping off easily. Therefore, a limit is placed at the front end of the protruding block 402 to be pushed, which also gives the protruding block 402 to be pushed a second function, which is very clever.

[0052] The protective tube unit 3 further includes a head receiving groove 306 provided on the circular tube body 301 and adapted to be snapped into the end head receiving groove 306 of the cylinder c after the circular tube body 301 has been rotated and opened, and a protruding strip 307 provided on the head receiving groove 306 and adapted to be snapped into the engaging plate unit 5.

[0053] In this embodiment, the circular tube body 301 needs to be rotated by an angle greater than 90° to leave a relatively large injection space for the needle b. Therefore, if there is no head receiving groove 306, the circular tube body 301 can be rotated at most about 90°, which brings great trouble to the injection operation. For example, when injecting behind the ear or under the armpit, this is particularly important.

[0054] Similarly, in order to make the rotatable angle of the circular tube body 301 as large as possible, a partial arc-shaped cut is provided on the edge of the cylinder c to ensure that the two end head corners of the head receiving groove 306 do not touch the cylinder c, as specifically shown in the attached Figure 3 figure.

[0055] In addition, the protruding strip 307 is the part where the engaging plate unit 5 fixes the circular tube body 301 that has been rotated.

[0056] The engaging plate unit 5 includes a radially extending plate 501 provided on the connecting tube a, and a bent plate 502 provided on the radially extending plate 501 and adapted to be snapped inside the protruding strip 307.

[0057] In this embodiment, the radially extending plate 501 plus the bent plate 502 form a "hook" structure. After it passes over the protruding strip 307, it can "hook" the entire circular tube body 301 to ensure that the circular tube body 301 does not accidentally rotate and fall during the injection operation of the syringe device.

[0058] In addition, after the injection operation is completed, when the circular tube body 301 rotates back to its original position, the bent plate 502 needs to pass over the protruding strip 307 again and move outwards. At this time, the protruding strip 307 can be broken or only bent, either of which is acceptable.

[0059] The rigid tube unit 4 further includes an alignment groove 403 provided on the outer circumferential surface of the outer sleeve 401 and passing through the to-be-pushed block 402; the protective tube unit 3 further includes an alignment block 308 provided on the inner circumferential surface of the circular tube body 301.

[0060] In this embodiment, the installation method of the inner tube on the circular tube body 301 is as follows: First, align the alignment groove 403 and the alignment block 308, and then insert the closed end of the hose body 201 into the hinged end of the circular tube body 301 until the to-be-pushed block 402 passes over the tube body at the end head groove 304 and is blocked by the to-be-broken strip 305, which completes the entire installation operation.

[0061] At this time, the inner tube is not easy to rotate within the circular tube body 301 because both sides of the to-be-pushed block 402 are blocked by both sides of the operation opening 303, and it is not easy to fall off either. After all, the hose body 201 clamps the circular tube body 301 and the to-be-broken strip 305 blocks the to-be-pushed block 402.

[0062] Finally, more ingeniously, the alignment groove 403 divides the to-be-pushed block 402 into two parts, so that the to-be-pushed block 402 has a large enough total area for pushing contact and can also undergo a large bending and energy storage deformation on the outer sleeve 401 to ensure sufficient force to bounce the inner tube.

[0063] This cannot be achieved if the to-be-pushed block 402 is "large and integral". When a large piece of the to-be-pushed block 402 is pushed by the end head groove 304, it is easy to have the problem that the inner tube cannot be pushed down with a small push, and then after a large push, the inner tube is only pushed open but not bounced off.

[0064] If the inner tube is pushed down instead of bounced off, it may be hooked on the needle b. At this time, the medical staff still needs to use one hand to pull out this inner tube, which is very troublesome, especially in the critical rescue process.

[0065] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various modifications can be made without departing from the purpose of the present invention. These are all non-creative modifications and are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A sealed protection syringe device, characterized in that: It includes a mounting shaft body unit (1) arranged on a connecting pipe (a), a soft needle tube unit (2) sleeved on the connecting pipe (a), a protection tube unit (3) arranged on the mounting shaft body unit (1) and outside the soft needle tube unit (2), a hard tube unit (4) arranged on the soft needle tube unit (2) and inside the protection tube unit (3) and used to receive the pushing and bouncing force after the rotation of the protection tube unit (3), and a clamping plate unit (5) arranged on the connecting pipe (a) and used to insert and fix the protection tube unit (3) that has been rotated and opened. The mounting shaft body unit (1) includes a fixing column (101) arranged on the connecting pipe (a) and used to radially outwardly jack up and limit the inner ring surface of the protection tube unit (3), and a rotating cylinder (102) arranged on the fixing column (101) and used to insert into the protection tube unit (3). The soft needle tube unit (2) includes a hose main body (201) with one end sealed and the other end sleeved on the connecting pipe (a) and used to protect the needle (b), and an annular groove (202) arranged on the outer ring surface of the hose main body (201) and used to mount the hard tube unit (4). The protection tube unit (3) includes a circular tube body (301), a circular hole (302) arranged at one end of the circular tube body (301) and used to insert and mount the rotating cylinder (102), and an operation opening (303) arranged on the circular tube body (301) and used to rotate and move out the soft needle tube unit (2). The hard tube unit (4) includes an outer sleeve (401) arranged on the annular groove (202), and a to-be-pushed block (402) arranged on the outer sleeve (401) and protruding outward on the operation opening (303). The protection tube unit (3) further includes an end head groove (304) arranged on the operation opening (303) and used to push the to-be-pushed block (402). The protection tube unit (3) further includes a to-be-broken strip (305) arranged on the operation opening (303) and used to engage the to-be-pushed block (402) at the front end in the bouncing direction of the soft needle tube unit (2).

2. The sealed protection syringe device according to claim 1, characterized in that: The protection tube unit (3) further includes an end head receiving groove (306) arranged on the circular tube body (301) and used to snap into the cylinder body (c) after the circular tube body (301) has been rotated and opened, and a protruding strip (307) arranged on the end head receiving groove (306) and used to snap into the clamping plate unit (5).

3. The sealed protection syringe device according to claim 2, characterized in that: The engaging plate unit (5) includes a radially extending plate (501) disposed on the connecting pipe (a), and a bent plate (502) disposed on the radially extending plate (501) and adapted to be snapped into the inner side of the protruding strip (307).

4. A sealed and protected syringe device according to claim 1, characterized in that: The rigid tube unit (4) further includes an alignment groove (403) disposed on the outer circumferential surface of the outer sleeve (401) and passing through the to-be-pushed block (402); the protection tube unit (3) further includes an alignment block (308) disposed on the inner circumferential surface of the circular tube body (301).

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