TWM451145U - Needle free connector structure - Google Patents

Description

Needle-free joint structure

This creation relates to a medical device for transfusion or drug delivery, especially a needle-free joint structure.

The traditional syringe syringe is a common medicinal device, but the needle has a sharp structure. When the medical staff uses the syringe syringe, it may be accidentally stabbed by the needle. If the needle is not clean, it may cause infection, resulting in a needle. Can not be discarded at will, must be professionally recycled to avoid the opportunity for medical personnel and the environment to be infected, increase the safety of use, but also increase the burden of medical costs. Therefore, there is a needle-free joint structure on the market for the application of a needle-free syringe, which is low in risk, can be reused, and can avoid the high cost caused by large-scale recycling.

The above-mentioned needle-free joint structure, such as the "Needleless luer access connector" of the U.S. Patent No. 7,713,250, which comprises a hollow outer casing and a partition, the hollow outer casing is provided with a passage, and the spacer is disposed in the hollow outer casing and blocked In front of the channel, to seal the channel, the spacer is a soft elastomer with a slit in the middle. Thereby, the needleless syringe can be inserted into the septum via the slit, the septum is deformed to open the passage, and the liquid in the needleless syringe can enter the patient through the needleless joint structure.

However, the structure of the "Needleless luer access connector" of the US Patent Publication No. "7,713,250" is not stable, and the details are as follows, and the spacer is opened through the slit. In order to control the switching of the channel, if the diaphragm is elastically fatigued under long-term use, the slit will be incompletely closed, resulting in a poor sealing effect; when the syringe is pumped back, it will cause The blood and the agent flow back into the joint structure in a negative pressure manner, and may overflow from the slit, causing medical personnel or environmental infection.

In view of this, the creator has made great efforts to solve the above problems by focusing on the above-mentioned prior art, and has devoted himself to the application of the theory, that is, the goal of the creator's improvement.

One of the aims of the present invention is to provide a needle-free joint structure, which is used to eliminate the automatic force, and the elastic block will push the stopper to automatically recover, and block the passage through the first ring portion and the second ring portion to improve the overall The structural stability and good sealing effect make the outside air completely unable to enter the joint structure.

In order to achieve the above object, the present invention provides a needle-free joint structure, comprising: a hollow joint having a first passage and a second passage connected at both ends, and a ring block extending inwardly from the periphery of the first passage. a first ring wall is formed on the inner circumference of the ring block, and the first channel forms a second ring wall between the ring block and the second channel; an elastic block is received in the first channel; and a switch An assembly having a stop member and a conduit connected to the stop member, the stop member being clamped between the ring block and the elastic block, the conduit being disposed through the second passage, the stop member The outer circumference is formed with a first ring portion abutting the first ring wall and a second ring portion abutting the second ring wall, and the stopper is at the first ring portion and the second ring portion A groove is provided between the conduits.

This creation also has the following effects:

First, an elastic block that is elastically fatigued due to the force, and its function is only to push the stopper to automatically recover, and then the first ring portion and the second ring portion on the stopper block the passage to thereby close the door. The function of the needle-free joint structure to prevent outside air from entering the joint, or the medicine and blood in the patient's body The countercurrent, so long-term use, the elastic block is elastic fatigue, and does not affect the sealing effect of the stopper, so that the closed needle-free joint structure of the present invention has excellent structural stability and sealing ability.

Second, the medical blood transfusion or drug delivery process does not require the use of conventional needles, but uses a needleless syringe and a needle-free joint structure to interface with each other, thereby avoiding needle sticking events and saving needle replacement and recycling. , thereby reducing medical costs.

Third, during the process of the stopper sliding on the first passage, the second ring portion formed by the outer periphery of the stopper abuts against the second ring wall to prevent liquid from passing between the stopper and the second ring wall. The gap penetrates into other positions, so that the liquid reliably flows into the groove, so that the needle-free joint structure of the present invention has good conductivity stability.

Fourth, the stopper comprises a plug block and a two-shaped O-ring which is sleeved around the plug block. The plug block is made of a hard material, the O-ring is made of rubber or silicone rubber, and the plug block forms a first ring portion with respect to the two O-rings. And the second ring part, the present invention can be easily assembled into a structurally stable stopper by using simple and convenient manufacturing components, thereby saving the manufacturing cost of the needle-free joint structure.

Fifth, the surface of the stopper contacting the injection head forms a liquid inlet surface, the peripheral edge of the liquid inlet surface has an end edge, and the end edge is provided with a flow guiding gap, thereby helping the liquid to enter the first passage through the flow guiding gap to prevent the liquid from being stopped. The surface of the stopper is blocked to reduce the problem of backflow of the liquid.

10‧‧‧ Needle-free joint structure

1‧‧‧ hollow joint

11‧‧‧First Passage

111‧‧‧ ring block

112‧‧‧First ring wall

113‧‧‧Second ring wall

12‧‧‧second channel

13‧‧‧First hollow body

131‧‧‧ external thread

14‧‧‧Second hollow body

141‧‧ ‧ partition

142‧‧‧ hollow tube

143‧‧‧ recessed area

144‧‧‧ internal thread

2‧‧‧Elastic block

3‧‧‧Switch components

31‧‧‧stops

311‧‧‧ First Ring

312‧‧ Second Second Ring

313‧‧‧ trench

32‧‧‧ catheter

33‧‧‧ plug

331‧‧‧ shoulder

332‧‧‧ head

333‧‧‧First ring groove

334‧‧‧second ring groove

335‧‧‧Into the liquid level

336‧‧‧ edge

337‧‧ ‧ diversion gap

34‧‧‧O-ring

100‧‧‧ needleless syringe

101‧‧‧Injection head

200‧‧‧Liquid

The first figure is a perspective exploded view of the needle-free joint structure of the present invention.

The second figure is another exploded view of the needle-free joint structure of the present invention.

The third figure is a schematic diagram of the combination of the needle-free joint structure of the present invention.

The fourth figure is a schematic cross-sectional view of the needle-free joint structure of the present invention.

The fifth figure is a schematic diagram of the use state of the needle-free joint structure of the present invention.

The sixth figure is a schematic diagram of another use state of the needle-free joint structure of the present invention.

The detailed description and technical content of the present invention will be described below in conjunction with the drawings, but the drawings are for illustrative purposes only and are not intended to limit the present invention.

Please refer to the first to fourth figures. The present invention provides a needle-free joint structure. The needle-free joint structure 10 mainly comprises a hollow joint 1, an elastic block 2 and a switch assembly 3.

The first end of the hollow joint 1 has a first passage 11 and a second passage 12, and a ring block 111 extends inwardly from the periphery of the first passage 11. The inner circumference of the ring block 111 forms a first ring wall 112, and the first passage A second annular wall 113 is formed between the ring block 111 and the second passage 12, and the circumference of the first annular wall 112 is smaller than the peripheral dimension of the second annular wall 113.

The hollow joint 1 includes a first hollow body 13 and a second hollow body 14 which are respectively connected to each other. The first hollow body 13 defines a first passage 11 and the second hollow body 14 extends from the inner periphery. 141 and a hollow tube 142 extending from the partition plate 141 away from the first hollow body 13, and a second passage 12 is formed in the hollow tube 142.

In addition, an external thread 131 is defined in an end portion of the first hollow body 13 away from the second hollow body 14. A recessed area 143 is formed between the partition wall 141 and the hollow tube 142 in the second hollow body 14, and the outer circumference of the recessed area 143 is formed. The rim has an internal thread 144.

The elastic block 2 is disposed in the first channel 11 and is made of sponge, rubber or silicone. The shape of the elastic block 2 is I-shaped, but not limited thereto.

The switch assembly 3 has a stop member 31 and a self-stop member 31 connected to a conduit 32. The stop member 31 is clamped between the ring block 111 and the elastic block 2, and the conduit 32 is disposed through the second passage 12, and The outer peripheral edge of the blocking member 31 is formed with a first ring portion 311 abutting the first ring wall 112 and a second ring portion 312 abutting the second ring wall 113, and the stopper 31 is at the first ring portion 311. And a communication guide between the second ring portion 312 A groove 313 of the tube 32.

As described in detail below, the stopper 31 includes a plug block 33 and a double O-ring 34 that surrounds the periphery of the plug block 33. The plug block 33 is made of a hard material such as plastic or the like, and the O-ring 34 is made of rubber or silicone. The plug block 33 extends with a duct 32 and forms a first ring portion 311 and a second ring portion 312 with respect to the two O-rings 34, and the plug block 33 is provided with a groove 313.

The plug block 33 has a shoulder portion 331 and a head portion 332 extending from the shoulder portion 331 toward the direction away from the duct 32. The circumference of the shoulder portion 331 is larger than the circumference of the head portion 332, and the first rim of the head portion 332 is provided with a first ring groove. 333, a second annular groove 334 is defined in the periphery of the shoulder 331, and the two O-rings 34 are respectively positioned on the first annular groove 333 and the second annular groove 334.

In addition, the plug block 33 forms an inlet surface 335 at an end remote from the conduit 32. The inlet surface 335 has an end edge 336 at its periphery, and the end edge 336 is provided with one or a plurality of flow guiding notches 337.

Furthermore, one end of the elastic block 2 abuts against the plug 33, and the other end abuts against the partition 141, so that the elastic block 2 is accommodated in the first passage 11, and a thrust is applied to the block 33 toward the ring block 111. .

In the combination of the needle-free joint structure 10, the hollow joint 1 has a first passage 11 and a second passage 12 at both ends, and a ring block 111 extends inwardly from the periphery of the first passage 11, and the inner circumference of the ring block 111 forms a first a ring wall 112, and the first channel 11 forms a second ring wall 113 between the ring block 111 and the second channel 12; the elastic block 2 is received in the first channel 11; the switch assembly 3 has a stop member 31 and The stopper 31 is connected with a duct 32. The stopper 31 is sandwiched between the ring block 111 and the elastic block 2, and the duct 32 is disposed through the second passage 12. The outer periphery of the stopper 31 is formed to abut the first a first ring portion 311 of the ring wall 112 and a second ring portion 312 abutting the second ring wall 113, and the stopper 31 is provided with a communication conduit 32 between the first ring portion 311 and the second ring portion 312. Trench 313. Thereby, the elastic block 2 which is elastically fatigued is generated by the force, and the function is only to push the stopper 31 to automatically recover, and then the first ring portion 311 and the second ring portion 312 on the stopper 31 are blocked. Channel, which in turn achieves the function of the closed needleless joint structure 10 In order to prevent the outside air from entering the joint or the counterflow of the medicament and the blood in the patient's body, the elastic block 2 is elastically fatigued under long-term use, and does not affect the sealing effect of the stopper 31, so that the present invention is closed and the needle-free joint structure is closed. 10 has excellent structural stability and sealing ability.

Referring to Figures 5 to 6, the use state of the needle-free joint structure is created, wherein the injection head 101 of the needle-free injector 100 is inserted from the first passage 11 of the hollow joint 1, and the injection head 101 is given a dose. a force to press and deform the elastic block 2 to cause the stopper 31 to retreat while the first ring portion 311 is located at the position of the first ring wall 112, given the position of the second ring wall 113, due to the first ring The peripheral dimension of the wall 112 is smaller than the peripheral dimension of the second annular wall 113, resulting in failure of the sealing ability of the first ring portion 311. The liquid 200 of the needleless injector 100 enters the first passage 11 via the liquid inlet surface 335, and then The catheter 32 and the second channel 12 are flowed through the groove 313 and finally enter the patient for use by the patient. Therefore, in the medical blood transfusion or drug delivery process, the needle-free injector 100 and the needle-free joint structure 10 are used to abut each other without using a conventional needle, thereby avoiding the needling event and saving the needle replacement. And recycling, which in turn reduces medical costs.

In addition, during the process in which the stopper 31 slides on the first passage 11, the second ring portion 312 formed on the outer periphery of the stopper 31 abuts against the second ring wall 113 to prevent the liquid 200 from passing through the stopper 31 and the The gap between the second ring walls 113 penetrates into other positions, so that the liquid 200 surely flows into the grooves 313, so that the needle-free joint structure 10 of the present invention has good conductivity.

Furthermore, the stopper 31 includes a plug 33 and a double O-ring 34 that surrounds the periphery of the plug 33. The plug 33 is made of a hard material, and the O-ring 34 is made of rubber or silicone, and the plug 33 is relatively The ring 34 forms the first ring portion 311 and the second ring portion 312, so that the present invention can be easily assembled into a structurally stable stopper 31 by using a simple and convenient manufacturing component, thereby saving the manufacturing cost of the needle-free joint structure 10.

Moreover, the stopper 31 contacts the surface of the injection head 101 to form a liquid inlet surface 335. The periphery of the liquid inlet surface 335 has an end edge 336, and the end edge 336 is provided with a flow guiding notch 337, thereby helping the liquid 200 to enter the first through the flow guiding notch 337. In the passage 11, to prevent the liquid 200 from being blocked by the surface of the stopper 31, reaching a lowering liquid The problem of the body 200 countercurrent.

In summary, the needle-free joint structure of the creation can achieve the intended purpose of use, and solve the lack of conventional knowledge, and has industrial utilization, novelty and progress, fully comply with the requirements of new patent applications, and converts patents. If the law is filed, please check and grant the patent in this case to protect the rights of the creator.

10‧‧‧ Needle-free joint structure

1‧‧‧ hollow joint

11‧‧‧First Passage

13‧‧‧First hollow body

131‧‧‧ external thread

14‧‧‧Second hollow body

2‧‧‧Elastic block

3‧‧‧Switch components

31‧‧‧stops

311‧‧‧ First Ring

312‧‧ Second Second Ring

313‧‧‧ trench

33‧‧‧ plug

331‧‧‧ shoulder

332‧‧‧ head

335‧‧‧Into the liquid level

336‧‧‧ edge

337‧‧ ‧ diversion gap

34‧‧‧O-ring

Claims (11)

A needle-free joint structure includes: a hollow joint having a first passage and a second passage connected at both ends, a ring block extending inwardly from the periphery of the first passage, and a first ring formed on the inner circumference of the ring block a second annular wall is formed between the ring block and the second passage; an elastic block is received in the first passage; and a switch assembly has a stop member and The stopper is connected with a conduit, and the stopper is clamped between the ring block and the elastic block. The conduit is disposed in the second passage, and the outer periphery of the stopper is formed to abut the first ring. a first ring portion of the wall and a second ring portion abutting the second ring wall, and the stopper is provided with a groove connecting the conduit between the first ring portion and the second ring portion groove. The needle-free joint structure of claim 1, wherein a circumference of the first ring wall is smaller than a circumference of the second ring wall. The needle-free joint structure of claim 1, wherein the stopper comprises a plug and a two-ring ring that surrounds the periphery of the plug, the plug extending the conduit and forming with respect to the two O-rings The first ring portion and the second ring portion are provided with the groove. The needle-free joint structure of claim 3, wherein the plug has a shoulder and a head extending from the shoulder away from the conduit, the shoulder having a circumference larger than a circumference of the head. A first ring groove is disposed on the periphery of the head, and a second ring groove is disposed on the periphery of the shoulder. The two O-rings are respectively positioned on the first ring groove and the second ring groove. The needle-free joint structure according to claim 3, wherein the plug block forms a liquid inlet surface at an end away from the conduit, and the liquid inlet surface has an end edge having at least one flow guiding gap. The needle-free joint structure of claim 1, wherein the hollow joint comprises a first joint a hollow body and a second hollow body, the first hollow body forming the first passage, the second hollow body extending a partition from the inner circumference and extending from the partition toward the first hollow body a tube in which the second passage is formed. The needle-free joint structure of claim 6, wherein the first hollow body is provided with an external thread away from the end of the second hollow body, and the second hollow body is formed between the partition and the hollow tube. a recessed area, the outer periphery of which has an internal thread. The needle-free joint structure of claim 3, wherein one end of the elastic block abuts the plug. The needle-free joint structure of claim 6, wherein one end of the elastic block abuts the partition. The needle-free joint structure according to claim 1, wherein the elastic block is made of sponge, rubber or silicone. The needle-free joint structure according to claim 1, wherein the elastic block has an I-shape.