CN219251212U

CN219251212U - Anti-reuse intravenous needle in disposable transfusion system

Info

Publication number: CN219251212U
Application number: CN202223120365.7U
Authority: CN
Inventors: 严彦宏
Original assignee: No 3 Peoples Hospital of Chengdu
Current assignee: No 3 Peoples Hospital of Chengdu
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-06-27
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses an anti-reuse intravenous needle in a disposable infusion set, which solves the technical problem that the intravenous needle cannot be reused in the prior art, so that the intravenous needle has the risk of being reused in the market after being used. The utility model comprises a needle seat, an infusion needle and an infusion tube which are connected with two ends of the needle seat, and a needle handle arranged on the outer wall of the needle seat; the needle seat is sleeved with a needle seat outer sleeve, the needle seat outer sleeve is sleeved with an anti-false puncture cap which is used for sealing the infusion needle and can retract into the needle seat outer sleeve to expose the infusion needle, and an anti-false puncture cap and a needle seat outer sleeve are provided with an anti-reuse mechanism. The utility model has simple structure, scientific and reasonable design and convenient use, can effectively prevent the intravenous needle from being reused after being used, eliminates the cross infection generated after the intravenous needle is reused, and simultaneously can effectively reduce the risk of the intravenous needle user being stabbed by mistake in the use process.

Description

Anti-reuse intravenous needle in disposable transfusion system

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a reusable intravenous needle in a disposable infusion apparatus.

Background

Intravenous needles are needles that are used clinically primarily for intravenous infusion, blood transfusion, or blood collection. Intravenous infusion is a method of delivering large amounts of sterile liquids, electrolytes, and drugs intravenously into the body using the principles of atmospheric pressure and hydrostatic pressure. Disposable intravenous infusion needle products have been developed earlier in China, and production has been carried out at home and abroad for many years, and are widely used in clinic at present.

The disposable intravenous infusion needle products are disposable products, so that cross infection can be effectively prevented. The prior art generally discards the disposable intravenous infusion needle product into medical waste for innocent treatment after the use is finished, and the disposable intravenous infusion needle product is almost ensured to be not to flow into a market for repeated use by a management system in the process, however, the disposable intravenous infusion needle product also provides a machine for lawless persons to ride, so that the disposable intravenous infusion needle product flows into the market for repeated use before the innocent treatment, and the potential safety hazard of medical accidents is brought. On the other hand, the disposable intravenous infusion needle after use is directly exposed before innocent treatment, and is easy to stab contact personnel before the innocent treatment, thereby bringing infection risk.

In the prior art, in order to ensure that the intravenous needle is safe for a user, a needle cap is generally arranged on the intravenous needle to prevent the user from being injured by mistake, however, in the process of using the intravenous needle by a needle receiver, the needle cap needs to be removed from the intravenous needle to enable the intravenous needle to be exposed for use, and in the process, if the user operates improperly or uncontrollably, the user has great risk of the intravenous needle from being injured by mistake.

Therefore, providing a disposable infusion set that prevents reuse of the intravenous needle to at least reduce the above-mentioned partial potential safety hazards is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to solve the technical problems that: the intravenous needle is prevented from being reused in the disposable infusion set, so that at least part of the technical problems are solved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the disposable intravenous needle comprises a needle seat, an infusion needle and an infusion tube which are connected with two ends of the needle seat, and a needle handle arranged on the outer wall of the needle seat; the needle seat is sleeved with a needle seat outer sleeve, the needle seat outer sleeve is sleeved with an anti-false puncture cap which is used for sealing the infusion needle and can retract into the needle seat outer sleeve to expose the infusion needle, and an anti-false puncture cap and a needle seat outer sleeve are provided with an anti-reuse mechanism.

Further, the reuse preventing mechanism comprises a reed arranged on the outer wall of the cap for preventing the false puncture and a wedge-shaped block arranged on the reed and positioned in the needle seat outer sleeve, and a temporary limiting convex point for temporarily limiting the wedge-shaped block to slide out of the needle seat outer sleeve is arranged at one end of the needle seat outer sleeve, which is close to the infusion needle.

Further, the needle seat outer sleeve is provided with a first limiting ring on the inner wall of one end close to the infusion needle, and a second limiting ring matched with the first limiting ring is arranged on the outer wall of the bottom end of the cap for preventing the false puncture.

Further, an embedded groove matched with the wedge-shaped block is formed in the first limiting ring.

Further, the needle handle comprises a needle handle body and a needle handle connecting body connected with the needle handle body, and the needle handle body is connected with the needle seat through the needle handle connecting body.

Further, a abdication hole matched with the needle handle connector is formed in the needle seat outer sleeve, the needle handle connector is arranged in the abdication hole in a penetrating mode, and a limit step for preventing the needle handle body from sliding out from the abdication hole is formed between the needle handle connector and the needle handle body.

Further, the cap for preventing the false puncture is provided with an embedded slot which is matched with the needle handle connector, and the length of the embedded slot is 2/3 times of the length of the infusion needle.

Further, the number of the anti-reuse mechanisms is two, and the anti-reuse mechanisms are symmetrically distributed on two sides of the anti-stabbing cap.

Further, the cap for preventing the false puncture comprises a cylindrical cap cylinder and a sealing cover arranged at the outer end of the cap cylinder, wherein the cap cylinder is made of medical PVC materials, and the cap cylinder is made of medical silica gel materials.

Further, the needle seat outer sleeve is made of medical PVC material.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model has simple structure, scientific and reasonable design and convenient use, can effectively prevent the intravenous needle from being reused after being used, eliminates the cross infection generated after the intravenous needle is reused, and simultaneously can effectively reduce the risk of the intravenous needle user being stabbed by mistake in the use process.

The utility model comprises an infusion needle, a needle seat, an infusion tube, a needle handle, a needle seat jacket, an anti-stab cap and an anti-reuse mechanism. The infusion needle is communicated with the infusion tube through the needle seat, the needle handle is positioned on the outer wall of the needle seat and is in an integrated structure with the needle seat, the needle seat jacket is sleeved on the needle seat, the needle handle is composed of a needle handle connector and a needle handle body, two sides of the needle handle connector are narrower than the needle handle body, a limiting step is formed between the needle handle connector and the needle handle body, a abdication hole on the needle seat jacket is matched with the size between the needle handle connector, and the needle handle body can be effectively prevented from sliding out from the abdication hole through the limiting step, so that the needle seat jacket can be effectively ensured to be firmly sleeved on the needle seat.

The anti-false puncture cap is sleeved in the needle seat outer sleeve, the anti-false puncture cap is prevented from slipping out of the needle seat outer sleeve through the cooperation of the first limiting ring and the second limiting ring, the anti-false puncture cap can be ensured to effectively cover an infusion needle, the anti-false puncture cap comprises a cap cylinder and a cover, an embedded slot hole is formed in the cap cylinder, and the length of the embedded slot hole is 2/3 times that of the infusion needle; the needle seat jacket and the cap cylinder are made of medical PVC materials, certain strength requirements are met, and the sealing cover is made of medical silica gel materials, so that the sealing cover is convenient to be penetrated by the infusion needle. When the infusion needle is used, the cap capable of preventing the false puncture is pressed into the needle seat jacket, the infusion needle punctures the sealing cover and is exposed out of the cap capable of preventing the false puncture, in the process, the needle handle connector is located in the embedded slot, the cap capable of preventing the false puncture is guaranteed to be retracted into the needle seat jacket smoothly, the length of the embedded slot determines the length of the cap capable of preventing the false puncture, and when the needle handle connector abuts against the top end of the embedded slot, 2/3 of the length of the infusion needle is exposed out of the cap capable of preventing the false puncture, so that the infusion operation can be performed in real time.

The utility model sets an anti-repeated use mechanism between the anti-stab cap and the needle seat outer sleeve, the anti-repeated use mechanism comprises a reed and a wedge-shaped block, the wedge-shaped block is positioned in the needle seat outer sleeve, when the anti-stab cap is retracted into the needle seat outer sleeve in the use process of the intravenous needle, the wedge-shaped block moves towards the infusion tube in the needle seat outer sleeve without influencing the infusion operation, after the anti-stab cap is used, a user pulls the anti-stab cap to move towards the needle tip of the infusion needle, the wedge-shaped block moves along with the reed in the infusion tube towards the needle tip of the infusion needle, when the wedge-shaped block arrives at the temporary limit bump, the infusion needle completely returns into the anti-stab cap, at the moment, the anti-stab cap and the needle seat outer sleeve are in the state before the infusion operation, and an operator pulls the anti-stab cap outwards forcefully, the temporary limiting protruding points are extruded by the wedge-shaped blocks and slide out of the needle seat outer sleeve into the embedding groove, the limiting effect between the anti-false puncture cap and the needle seat outer sleeve is achieved by the first limiting ring and the second limiting ring, the anti-false puncture cap is guaranteed not to be pulled out of the needle seat outer sleeve, after the wedge-shaped blocks enter the embedding groove, the reed is connected with the wedge-shaped blocks, under the limiting effect of the temporary limiting protruding points, the anti-false puncture cap is pressed downwards towards the needle seat outer sleeve by using force, the wedge-shaped blocks cannot be pressed out of the embedding groove to enter the needle seat outer sleeve, at the moment, the anti-false puncture cap cannot retract into the needle seat outer sleeve in a large amount, and therefore the infusion needle can be prevented from exposing the effective infusion length from the sealing cover, and the purpose of preventing the intravenous needle from being reused after being used is achieved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic diagram of the connection of the hub jacket and the cap for preventing the false puncture (the wedge block is positioned in the hub jacket before the intravenous needle is used).

Fig. 3 is a schematic diagram showing the connection of the hub jacket and the cap for preventing the false puncture (the wedge block slides out of the hub jacket after the intravenous needle is used).

Fig. 4 is a schematic structural view of the cap for preventing the accidental puncture.

Fig. 5 is a schematic view of the outer jacket structure of the needle holder of the present utility model.

Fig. 6 is a top view of the hub jacket of the present utility model.

Fig. 7 is a cross-sectional view of the hub jacket of the present utility model.

Fig. 8 is another cross-sectional view of the hub jacket of the present utility model.

Fig. 9 is a schematic diagram showing the connection of the infusion needle, the infusion tube, the needle handle and the needle seat.

Wherein, the names corresponding to the reference numerals are:

1-transfusion needle, 2-transfusion tube, 3-needle handle, 4-needle seat jacket, 5-anti-stab cap, 6-reed, 7-wedge block, 8-temporary limit bump, 9-first limit ring, 10-second limit ring, 11-embedded groove, 12-embedded slot, 13-needle seat, 14-abdication hole, 31-needle handle body, 32-needle handle connector, 33-limit step, 51-cap tube and 52-cover.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1, as shown in fig. 1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The infusion tube 2 is a hose.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The reuse preventing mechanism comprises a reed 6 arranged on the outer wall of the anti-stabbing cap 5 and a wedge-shaped block 7 arranged on the reed 6 and positioned in the needle seat outer sleeve 4, and a temporary limiting convex point 8 for temporarily limiting the wedge-shaped block 7 to slide out of the needle seat outer sleeve 4 is arranged at one end of the needle seat outer sleeve 4 close to the infusion needle 1.

In this embodiment 2, on the basis of embodiment 1, a more preferable structure of the reuse prevention mechanism is given, specifically: the reuse preventing mechanism comprises a reed 6 arranged on the outer wall of the anti-stabbing cap 5 and a wedge-shaped block 7 arranged on the reed 6 and positioned in the needle seat outer sleeve 4, and a temporary limiting convex point 8 for temporarily limiting the wedge-shaped block 7 to slide out of the needle seat outer sleeve 4 is arranged at one end of the needle seat outer sleeve 4 close to the infusion needle 1. The temporary limiting protruding points 8 prevent the wedge-shaped block 7 from sliding out of the needle seat outer sleeve 4 in the processes of storage, transportation and the like, so that the intravenous needle can be normally used, the wedge-shaped block 7 is arranged in the needle seat outer sleeve 4 before use, the anti-stabbing cap 5 is pulled outwards from the needle seat outer sleeve 4 after use, the wedge-shaped block 7 moves outwards along with the reed 6, when the wedge-shaped block 7 arrives at the temporary limiting protruding points 8, the pulling force is increased to enable the wedge-shaped block 7 to squeeze and cross the temporary limiting protruding points 8, and the temporary limiting protruding points 8 can play a role of preventing the wedge-shaped block 7 from freely entering and exiting the needle seat outer sleeve 4, so that the infusion needle can be prevented from exposing the effective infusion length from the sealing cover, and the aim of preventing the intravenous needle from being reused after use is achieved.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The reuse preventing mechanism comprises a reed 6 arranged on the outer wall of the anti-stabbing cap 5 and a wedge-shaped block 7 arranged on the reed 6 and positioned in the needle seat outer sleeve 4, and a temporary limiting convex point 8 for temporarily limiting the wedge-shaped block 7 to slide out of the needle seat outer sleeve 4 is arranged at one end of the needle seat outer sleeve 4 close to the infusion needle 1. The needle seat outer sleeve 4 is provided with a first limiting ring 9 on the inner wall of one end close to the infusion needle 1, and a second limiting ring 10 matched with the first limiting ring 9 is arranged on the outer wall of the bottom end of the anti-stabbing cap 5.

The preferred connection structure between the hub jacket 4 and the anti-stab cap 5 is provided in this embodiment 3 based on embodiment 2, specifically: the needle seat outer sleeve 4 is provided with a first limiting ring 9 on the inner wall of one end close to the infusion needle 1, and a second limiting ring 10 matched with the first limiting ring 9 is arranged on the outer wall of the bottom end of the anti-stabbing cap 5. By the design, when the anti-false puncture cap 5 is pulled by force to enable the wedge-shaped block 7 to squeeze and pass over the temporary limiting convex point 8, the anti-false puncture cap 5 can be effectively prevented from being pulled out of the needle seat outer sleeve 4 through the limiting cooperation between the first limiting ring 9 and the second limiting ring 10. The wedge 7 is located between the first stop collar 9 and the second stop collar 10, and the spacing between the wedge 7 and the second stop collar 10 is greater than the thickness of the first stop collar 9.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The reuse preventing mechanism comprises a reed 6 arranged on the outer wall of the anti-stabbing cap 5 and a wedge-shaped block 7 arranged on the reed 6 and positioned in the needle seat outer sleeve 4, and a temporary limiting convex point 8 for temporarily limiting the wedge-shaped block 7 to slide out of the needle seat outer sleeve 4 is arranged at one end of the needle seat outer sleeve 4 close to the infusion needle 1. The needle seat outer sleeve 4 is provided with a first limiting ring 9 on the inner wall of one end close to the infusion needle 1, and a second limiting ring 10 matched with the first limiting ring 9 is arranged on the outer wall of the bottom end of the anti-stabbing cap 5. The first limiting ring 9 is provided with an embedded groove 11 matched with the wedge-shaped block 7, and the temporary limiting convex point 8 is positioned on the way that the wedge-shaped block 7 enters the embedded groove 11.

In this embodiment 4, on the basis of embodiment 3, a more preferable structure of the first stop collar 9 is given, specifically: the first limiting ring 9 is provided with an embedded groove 11 matched with the wedge-shaped block 7, and the temporary limiting convex point 8 is positioned on the way that the wedge-shaped block 7 enters the embedded groove 11. By means of the design, the wedge-shaped block 7 enters the embedded groove 11 and stays in the embedded groove 11 when sliding out of the needle seat outer sleeve 4, the temporary limiting protruding points 8 are located on the way that the wedge-shaped block 7 enters the embedded groove 11, the strength of the pipe wall at the top of the needle seat outer sleeve 4 can be effectively enhanced through the first limiting ring 9, accordingly the strength that the temporary limiting protruding points 8 are extruded to give way can be effectively enhanced, and the risk that the wedge-shaped block 7 slides out of the needle seat outer sleeve 4 due to misoperation is reduced.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The needle handle 3 includes a needle handle body 31 and a needle handle connector 32 connected to the needle handle body 31, and the needle handle body 31 is connected to the needle holder 13 via the needle handle connector 32.

This example 5 gives a more preferable structure of the needle handle 3 on the basis of example 1, specifically: the needle handle 3 includes a needle handle body 31 and a needle handle connector 32 connected to the needle handle body 31, and the needle handle body 31 is connected to the needle holder 13 via the needle handle connector 32. The needle handle connector both sides are narrower than the needle handle body and form spacing step between needle handle connector and needle handle body, so design not only save materials, can also guarantee the effective use of needle handle 3.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The needle handle 3 includes a needle handle body 31 and a needle handle connector 32 connected to the needle handle body 31, and the needle handle body 31 is connected to the needle holder 13 via the needle handle connector 32. The needle seat outer sleeve 4 is provided with a yielding hole 14 matched with the needle handle connector 32, the needle handle connector 32 is penetrated in the yielding hole 14, and a limit step 33 for preventing the needle handle body 31 from sliding out of the yielding hole 14 is formed between the needle handle connector 32 and the needle handle body 31.

In this embodiment 6, on the basis of embodiment 5, a more preferable connection structure between the needle handle 3 and the needle hub outer sheath 4 is provided, specifically: the needle seat outer sleeve 4 is provided with a yielding hole 14 matched with the needle handle connector 32, the needle handle connector 32 is penetrated in the yielding hole 14, and a limit step 33 for preventing the needle handle body 31 from sliding out of the yielding hole 14 is formed between the needle handle connector 32 and the needle handle body 31. The size looks adaptation between hole and the needle handle connector of stepping down on the needle file overcoat can prevent effectively that the needle handle body from sliding out from stepping down the hole through spacing step, so can effectively guarantee that the needle file overcoat is firm to be overlapped on the needle file.

Embodiment 7, as shown in fig. 1-9, the disposable infusion set of the utility model provides an anti-reuse intravenous needle, which comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The needle handle 3 includes a needle handle body 31 and a needle handle connector 32 connected to the needle handle body 31, and the needle handle body 31 is connected to the needle holder 13 via the needle handle connector 32. The cap 5 is provided with an embedded slot 12 matched with the needle handle connector 32, and the length of the embedded slot 12 is 2/3 times of the length of the infusion needle 1.

In this embodiment 7, on the basis of embodiment 5, a more preferable structure of the anti-stab cap 5 is provided, specifically: the cap 5 is provided with an embedded slot 12 matched with the needle handle connector 32, and the length of the embedded slot 12 is 2/3 times of the length of the infusion needle 1. The length of the embedded slot hole determines the length of the cap capable of retracting when the cap is prevented from being stabbed by mistake, and when the needle handle connector abuts against the top end of the embedded slot hole, the infusion needle is exposed out of the cap with the length of 2/3 of the length of the infusion needle, so that the infusion operation can be performed in real time.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The two anti-reuse mechanisms are symmetrically distributed on two sides of the anti-stabbing cap 5.

In this embodiment 8, on the basis of embodiment 1, a more preferable structure of the reuse prevention mechanism is given, specifically: the two anti-reuse mechanisms are symmetrically distributed on two sides of the anti-stabbing cap 5. By arranging the two anti-reuse mechanisms, the anti-reuse function of the intravenous needle can be further enhanced.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The anti-stabbing cap 5 comprises a cylindrical cap barrel 51 and a sealing cover 52 arranged at the outer end of the cap barrel 51, the cap barrel 51 is made of medical PVC materials, and the cap barrel 51 is made of medical silica gel materials. The second stop collar 10 is provided on the cap barrel 51.

In this embodiment 9, on the basis of embodiment 1, a more preferable structure of the anti-stab cap 5 is provided, specifically: the anti-stabbing cap 5 comprises a cylindrical cap barrel 51 and a sealing cover 52 arranged at the outer end of the cap barrel 51, the cap barrel 51 is made of medical PVC materials, and the cap barrel 51 is made of medical silica gel materials. By the design, not only the strength of the cap 5 for preventing the accidental puncture and the accidental puncture of the intravenous needle from hurting people can be ensured, but also the infusion needle 1 can be easily penetrated out from the sealing cover 52 to implement the infusion operation.

1-9, the disposable infusion set of the utility model comprises a needle seat 13, an infusion needle 1 and an infusion tube 2 connected to two ends of the needle seat 13, and a needle handle 3 arranged on the outer wall of the needle seat 13; the needle seat 13 is sleeved with a needle seat outer sleeve 4, the needle seat outer sleeve 4 is sleeved with an anti-stabbing cover cap 5 which is used for sealing the infusion needle 1 and can retract into the needle seat outer sleeve 4 to expose the infusion needle 1, and an anti-stabbing mechanism is arranged between the anti-stabbing cover cap 5 and the needle seat outer sleeve 4. The needle seat outer sleeve 4 is made of medical PVC material.

The embodiment 10 provides a more preferable structure of the hub jacket 4 based on the embodiment 1, specifically: the needle seat outer sleeve 4 is made of medical PVC material. By the design, the strength of the needle seat outer sleeve 4 can be effectively ensured, so that the reliable operation of the whole anti-reuse mechanism is ensured.

Finally, it should be noted that: the above embodiments are merely preferred embodiments of the present utility model for illustrating the technical solution of the present utility model, but not limiting the scope of the present utility model; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; that is, even though the main design concept and spirit of the present utility model is modified or finished in an insubstantial manner, the technical problem solved by the present utility model is still consistent with the present utility model, and all the technical problems are included in the protection scope of the present utility model; in addition, the technical scheme of the utility model is directly or indirectly applied to other related technical fields, and the technical scheme is included in the scope of the utility model.

Claims

1. The disposable intravenous needle is characterized by comprising a needle seat (13), an infusion needle (1) and an infusion tube (2) which are connected with two ends of the needle seat (13), and a needle handle (3) arranged on the outer wall of the needle seat (13); the needle seat (13) is sleeved with a needle seat outer sleeve (4), the needle seat outer sleeve (4) is sleeved with an anti-false puncture cap (5) which is used for covering the infusion needle (1) and can retract into the needle seat outer sleeve (4) to expose the infusion needle (1), and an anti-false puncture cap (5) and the needle seat outer sleeve (4) are provided with an anti-reuse mechanism.

2. The intravenous needle for preventing reuse in a disposable infusion set according to claim 1, wherein the reuse preventing mechanism comprises a reed (6) arranged on the outer wall of the cap (5) for preventing stabbing, and a wedge-shaped block (7) arranged on the reed (6) and positioned in the needle seat outer sleeve (4), and a temporary limiting convex point (8) for temporarily limiting the wedge-shaped block (7) to slide out of the needle seat outer sleeve (4) is arranged on one end of the needle seat outer sleeve (4) close to the infusion needle (1).

3. The intravenous needle for preventing repeated use in the disposable infusion set according to claim 2, wherein the needle seat outer sleeve (4) is provided with a first limiting ring (9) on the inner wall of one end close to the infusion needle (1), and a second limiting ring (10) matched with the first limiting ring (9) is arranged on the outer wall of the bottom end of the cap (5) for preventing false puncture.

4. A disposable intravenous needle according to claim 3, wherein the first stop collar (9) is provided with an insertion groove (11) adapted to the wedge block (7).

5. The intravenous needle for preventing reuse in a disposable infusion set according to claim 1, wherein the needle handle (3) comprises a needle handle body (31) and a needle handle connector (32) connected with the needle handle body (31), and the needle handle body (31) is connected with the needle seat (13) through the needle handle connector (32).

6. The intravenous needle for preventing repeated use in a disposable infusion set according to claim 5, wherein the needle holder jacket (4) is provided with a abdication hole (14) matched with the needle handle connector (32), the needle handle connector (32) is penetrated in the abdication hole (14), and a limit step (33) for preventing the needle handle body (31) from sliding out of the abdication hole (14) is formed between the needle handle connector (32) and the needle handle body (31).

7. The intravenous needle for preventing repeated use in a disposable infusion set according to claim 5, wherein the cap (5) for preventing the accidental puncture is provided with an embedded slot (12) which is matched with the needle handle connector (32), and the length of the embedded slot (12) is 2/3 times of the length of the infusion needle (1).

8. The intravenous needle for preventing repeated use in the disposable infusion set according to claim 1, wherein the number of the repeated use preventing mechanisms is two, and the repeated use preventing mechanisms are symmetrically distributed on two sides of the cap (5) for preventing the false puncture.

9. The intravenous needle for preventing repeated use in a disposable infusion set according to claim 1, wherein the cap (5) for preventing the false puncture comprises a cylindrical cap cylinder (51) and a sealing cover (52) arranged at the outer end of the cap cylinder (51), the cap cylinder (51) is made of medical PVC material, and the cap cylinder (51) is made of medical silica gel material.

10. The intravenous needle for preventing reuse in a disposable infusion set according to claim 1, wherein the hub outer sheath (4) is made of medical PVC material.