TWM509048U - Syringe with needle tip protection cap - Google Patents

Description

Syringe with needle tip protection cover

The present invention relates to an injection syringe with a needle tip protection cover, and more particularly to a needle tip protection cover that has both an automatic upper cover for improved safety, a needle tip safety assembly that automatically faces the needle tip, and a cover orientation guide. Injection syringe.

The needles of the conventional syringes have the tip of the needle for injection, and such a design often causes the tip of the needle to stab the person after the injection (especially during the process of moving or walking the syringe is particularly prone to occur). The needle is wounded and even infected with the disease.

When the needle is finished, the cover should be covered with a cover to call the needle back (handle the needle in one hand and the cover in the other). The purpose is to avoid others (including nursing staff, cleaning staff, and waste). The handler, etc.) was stabbed. However, when the needle is turned back, if the caregiver is slightly distracted or slightly careless and misaligned, it is easy to accidentally stab the hand and risk being infected with a specific disease (eg AIDS, etc.) .

In addition, since the needle after use is not destroyed, there will be cases in which multiple people share the same needle, and people who share the needle are infected with blood-borne diseases such as hepatitis C and AIDS. . . . Wait.

Therefore, it is necessary to develop new technologies to solve the above disadvantages.

The purpose of the present invention is to provide an injection syringe with a needle tip protection cover, which has the advantages of both the automatic upper cover and the safety of the needle tip safety component, which can be automatically oriented toward the tip of the needle and with the aid of the upper cover direction. In particular, the problem to be solved by this creation is that conventional injection needles are often stabbed by the tip of the needle after injection because of inattention.

The technical means for solving the above problems is to provide an injection syringe with a needle tip protection cover, comprising: a cylinder having: a hollow cylinder; a first end of the cylinder, located in the hollow cylinder a second end of the cylinder is located on the other side of the hollow cylinder, the first end of the cylinder is in communication with the second end of the cylinder; a pressing member is inserted in the a hollow cylinder movable relative to the hollow cylinder, the pressing member having a pushing end; a needle body having: a needle joint for connecting the needle body to the second end of the cylinder a hollow needle tube having a needle connection end, a needle tip end and a needle internal passage; the needle connection end is for the hollow needle tube to be coupled to the needle body joint, the needle tip end is used for injection; The channel is connected to the needle connecting end and the tip of the needle; a needle tip safety component has a rod body inserted into the hollow barrel and the hollow needle tube and movable relative thereto; a connecting end portion Is located in the rod body extending to the hollow cylinder End, and Corresponding to the pressing end portion; a needle shielding portion is located at one end of the rod body extending to the hollow needle tube, and the needle shielding portion can be moved to a retracted position and a covering position; thereby, the pushing a process of moving the pressing end portion from the first end of the barrel toward the second end of the barrel; contacting the connecting end to push the needle tip safety component to move the needle covering portion from the retracted position To the covering position, to cover and prevent the tip of the needle from contacting the outside.

The above objects and advantages of the present invention will be readily understood from the following detailed description of the embodiments and the accompanying drawings.

The following examples are used in conjunction with the drawings to illustrate the creation in detail:

10‧‧‧Cylinder

11‧‧‧ hollow body

12‧‧‧ first end of the cylinder

13‧‧‧The second end of the barrel

14‧‧‧Inner guide surface

20‧‧‧Pushing components

21‧‧‧Pushing end

30‧‧‧ needle

31‧‧‧ needle connector

32‧‧‧ hollow needle tube

321‧‧‧needle connector

322‧‧‧needle tip

323‧‧‧ internal passage of the needle

40‧‧‧ Needle tip safety components

41‧‧‧ rod body

42‧‧‧Link end

421‧‧‧ Pushing the leading edge

422‧‧‧through hole

43‧‧‧Needle cover

90‧‧‧Injection container

91‧‧‧Injection

92‧‧‧Injected

P1‧‧‧ retracted position

P2‧‧‧ first extended position

P3‧‧‧ second extended position

P4‧‧‧ Covering position

Θ‧‧‧bend angle

Summit of X‧‧‧

The first A picture is an exploded view of the first embodiment of the present creation

The first B diagram is an exploded view of the second embodiment of the present creation

Figure 2A is a schematic diagram of a first application example of the needle tip security component of the present invention.

The second B diagram is a schematic diagram of a second application example of the needle tip security component of the present invention.

The third picture is a schematic diagram of the suction injection of the present creation.

The fourth picture is a schematic diagram of the creation before the injection.

The fifth picture is a schematic diagram of the injection of this creation.

The sixth picture is a schematic diagram of the creation of this creation.

The seventh picture is a schematic diagram of the tip of the needle cover covering the tip of the needle.

The eighth, eighth, eighth, eighth, and eighth D drawings are respectively extended before and after the needle cover portion of the creation Schematic diagram of the center of the needle beyond the tip of the needle and the tip of the needle

Referring to the first A, the second A and the third figure, the present invention is an injection syringe with a needle tip protection cover, comprising: a cylinder 10 having: a hollow cylinder 11; a cylinder first The end portion 12 is located at one side of the hollow cylinder 11; a second end portion 13 of the cylinder is located on the other side of the hollow cylinder 11, the first end portion 11 of the cylinder and the second portion of the cylinder The end portions 13 are in communication with each other; a pressing member 20 is inserted into the hollow cylinder 11 and is movable relative to the hollow cylinder 11, the pressing member 20 has a pressing end portion 21; a needle body 30, has a needle joint 31 for connecting the needle body 30 to the second end portion 13 of the cylinder; a hollow needle tube 32 having a needle connecting end 321, a needle tip 322 and a needle body The needle connecting end 321 is for the hollow needle tube 32 to connect the needle body joint 31, the needle tip 322 is used for injection; the needle internal passage 323 is connected to the needle connecting end 321 and the needle tip 322; a needle tip safety assembly 40 having a rod body 41 inserted into the hollow barrel 11 and the hollow needle tube 32, and Relative movement; a connecting end portion 42, located in the line 41 extending to the shaft 11 of the hollow barrel One end of the pressing end portion 21 corresponds to the pushing end portion 21; a needle shielding portion 43 is located at one end of the rod body 41 extending to the hollow needle tube 32, and the needle shielding portion 43 is movable to a retracted position P1 And a covering position P4 (refer to the seventh figure); thereby, the pressing end portion 21 is moved from the first end portion 12 of the cylinder toward the second end portion 13 of the cylinder; the connecting end portion is contacted 42 further pushes the needle tip safety assembly 40 to move the needle shield portion 43 from the retracted position P1 to the cover position P4 for covering to prevent the needle tip 322 from contacting the outer portion.

In practice, the needle tip safety assembly 40 can be a metal machined structure.

The connecting end portion 42 can be a disc structure (as shown in FIG. 2A), a cross structure (as shown in FIG. 2B), and any structure for the pushing end portion 21 to push the needle tip safety assembly 40. .

Referring to the first A and the first B, the rod body 41 has elasticity and is curved from the connecting end portion 42 toward the needle tip portion 43 in a direction of the needle tip end 322, and has a curved arc. Angle θ.

Thereby, when the needle cover portion 43 is changed from the retracted position P1 to a first extended position P2, a second extended position P3 and the covering position P4, the rod 41 is tied to the hollow needle tube 32, biased toward the needle tip 322; the needle shield portion 43 is passed through the first and second extended positions P2 and P3, and when it is changed to the covering position P4, it can be covered to prevent the needle tip 322 External contact (see Figures 8A, 8B, 8C and 8D).

The connecting end portion 42 may be provided with a pushing guiding edge 421 corresponding to the direction of the bending angle θ (refer to the first B diagram); The connecting end portion 42 is further provided with at least one through hole 422 for communicating both sides of the connecting end portion 42.

The inner surface of the hollow cylinder 11 is provided with an inner guiding surface 14 corresponding to the pressing guiding edge 421; thereby, the connecting end portion 42 is pushed into the hollow cylinder 11 by the pressing end portion 21 During the pressing process, the needle mask portion 43 can be maintained toward the needle tip end 322.

The process of using this creation is as follows:

Referring to the third figure, the pressing member 20 is inserted into the hollow cylinder 11. The needle shielding portion 43 is located at the retracted position P1 (wherein at least one of the hollow cylinder 11 and the hollow needle 32). , both in the retracted position P1), the needle tip 322 is inserted into an injection container 90, and the pressing member 20 is directed from the second end 13 of the barrel toward the first end 12 of the barrel When the direction of the injection is pulled, the injection liquid 91 in the injection liquid containing portion 90 is sucked into the hollow cylindrical body 11, and the flow path of the injection liquid 91 sequentially passes through the needle tip end 322, the needle cover portion 43, The needle inner passage 323, the needle connecting end 321, the needle joint 31, and the second end portion 13 of the barrel flow into the hollow cylinder 11 (see the fourth drawing), and the injection liquid 91 is in contact with the flow process. The needle tip safety assembly 40.

Next, referring to the fifth figure, the needle tip 322 is inserted into an injectable object 92 (e.g., any living thing), and the pressing end portion 21 starts from the first end portion 12 of the barrel toward the second portion of the barrel. The direction of the end portion 13 is pushed, and the injection liquid 91 flows backward from the aforementioned flow path, and is injected into the object to be injected 92 from the needle tip end 322. When the injection is completed, the needle tip 322 is withdrawn from the injectable object 92 (as shown in FIG. 6), and the pressing end portion 21 is continuously pushed, that is, the connecting end portion 42 is contacted through the pressing end portion 21 ( As shown in FIG. 8A, the needle cover portion 43 is still located at this time. The hollow needle tube 32) starts to push the needle tip safety component 40, and the needle shield portion 43 can be sequentially moved from the retracted position P1 to a first extended position P2 (as shown in FIG. 8B). A second extended position P3 (as shown in FIG. 8C) and when the needle shield portion 43 exceeds the apex X of the needle tip 322. That is, since the rod body 41 has the bending angle θ, the needle shielding portion 43 is automatically oriented and contacts the needle tip end 322, and the vertex X can be covered (as shown in the seventh and eighth D-pictures). Position P4) prevents the needle tip 322 from coming into contact with the outside to prevent infection problems that may be caused by the needle tip 322 that may have germs (poisonous).

Of course, if the needle cover portion 43 is not aligned with the vertex X, the associated fixture can be rotated to cover the vertex X.

Such a design enables the medical staff to easily puncture the skin by the tip of the needle 322 when the needle is moved back, and the general medical staff will wear latex safety gloves to protect the human body and protect the biological safety.

The advantages and functions of this creation can be summarized as:

[1] Automatic cover for increased safety. Using the safe injection syringe of the present invention, after the injection is completed/extracted (for example, blood is drawn), after the injection is withdrawn, the pushing member is further advanced, so that the needle covering portion faces the tip end of the needle. When moving, and when the tip of the needle is exceeded, the tip of the needle is automatically covered, and the process does not require hand contact, which improves safety. Therefore, the automatic cover improves safety.

[2] The needle tip safety assembly is automatically quite oriented towards the tip of the needle. The needle tip safety component of the present invention is specially designed, and the rod body has elasticity, and is bent from the connecting end toward the needle covering portion toward the tip end of the needle, that is, as long as the needle covering portion Extending the hollow needle tube will deflect toward the tip of the needle and over the tip of the needle The tip of the needle is automatically capped. Therefore, the needle tip safety assembly can be automatically oriented toward the tip of the needle.

[3] With the upper cover direction guide assist. The inner surface of the hollow cylinder of the present invention is provided with a guiding inner surface corresponding to the direction of the curved arc angle; the connecting end portion is provided with a pushing guiding edge corresponding to the inner guiding surface of the cylinder; and the needle tip safety component is pushed by the pushing component During the pressing process, the needle cover portion can be maintained toward the tip end of the needle. Therefore, the upper cover direction guide assists.

The above is only a detailed description of the present invention by way of a preferred embodiment, and any modifications and variations of the embodiments are possible without departing from the spirit and scope of the present invention.

10‧‧‧Cylinder

11‧‧‧ hollow body

12‧‧‧ first end of the cylinder

13‧‧‧The second end of the barrel

20‧‧‧Pushing components

21‧‧‧Pushing end

30‧‧‧ needle

31‧‧‧ needle connector

32‧‧‧ hollow needle tube

321‧‧‧needle connector

322‧‧‧needle tip

40‧‧‧ Needle tip safety components

41‧‧‧ rod body

42‧‧‧Link end

43‧‧‧Needle cover

Θ‧‧‧bend angle

Claims (5)

An injection syringe with a needle tip protection cover, comprising: a cylinder having: a hollow cylinder; a first end of a cylinder located on one side of the hollow cylinder; and a second end of the cylinder a first portion of the tubular body is in communication with the second end of the tubular body; a pressing member is inserted into the hollow tubular body, and The hollow body has a relative movement, and the pressing member has a pressing end portion; the needle body has a needle body joint for connecting the needle body to the second end portion of the barrel body; and a hollow needle tube having a needle connection end, a needle tip end and a needle internal passage; the needle connection end is for the hollow needle tube to be coupled to the needle body joint, the needle tip is used for injection; the needle internal passage is connected to the needle connection end And a tip end of the needle; a needle tip safety component having a rod body inserted into the hollow barrel and the hollow needle tube and movable relative thereto; a connecting end portion extending from the rod body to One end of the hollow cylinder and corresponding to the pressing end; a needle cover portion extending from the rod body to one end of the hollow needle tube, the needle shield portion being movable to a retracted position and a covering position; thereby, the pushing end portion is from the first end of the barrel The process of moving toward the second end of the barrel The needle end portion is contacted to push the needle tip safety assembly to move the needle shield portion from the retracted position to the covering position for covering to prevent the needle tip from contacting the outer portion. An injection syringe having a needle tip protection cover according to claim 1, wherein the needle tip safety component is a metal working structure. The syringe barrel with a needle tip protection cover according to claim 2, wherein the joint end is a disc structure, a cross structure, and any of the push ends can push the needle tip safety component. structure. An injection syringe with a needle tip protection cover according to claim 1, wherein the rod system has elasticity and is bent toward the tip of the needle from the joint end toward the needle cover portion. The arc shape has a curved arc angle. The syringe barrel with a needle tip protection cover according to claim 4, wherein the connecting end portion is provided with a pushing guiding edge in a direction corresponding to the bending angle; the connecting end portion is provided with at least a through hole for communicating the two sides of the connecting end; the inner surface of the hollow cylinder corresponds to the guiding edge, and a guiding inner surface is provided; thereby, the connecting end is inside the hollow cylinder During the pressing of the pushing end, the needle covering portion is kept facing the tip end of the needle.