Needle-free dosing reusable separation device
Patent Information
- Application Number
- TW114111495
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-10-01
- Estimated Expiration
- 2045-03-25
AI Technical Summary
Conventional needle-free connectors suffer from low flow rates, drug residue, damage to blood cells, poor sealing, and laborious connection due to inflexible design, limiting their effectiveness in drug delivery and blood drawing applications.
A needle-free, reusable separation device with longitudinally opened through holes, enhanced sealing mechanisms, and easy-to-disengage design, ensuring high flow rates and preventing drug residue and blood cell damage while allowing stable connection and disconnection.
The device achieves flow rates above 100 mL/min, prevents drug residue and blood cell damage, and ensures easy, stable connection and disconnection, enhancing the reliability and efficiency of drug delivery and blood drawing processes.
Smart Images
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Abstract
Description
[Technical Field]
[0001] The present invention relates to a separation device, and more particularly to a needle-free, reusable separation device for drug delivery. [Previous Technology]
[0002] A conventional closed-type pinless connector module includes a movable closed connector and a pinless connector, which can be mated and separated. The movable closed connector includes a body, a first connecting portion, and a first resilient valve. The pinless connector includes a housing, a second connecting portion, a screw portion, a connecting tube, a second resilient valve, a third resilient valve, and a balancing pressure valve. The connecting tube is disposed inside the housing and includes an upper column, a large-diameter portion, and a lower column. Two through holes are laterally opened on the side wall of the top of the upper column, so that the connecting tube can withstand a large back pressure.
[0003] However, the size of these through-holes is small and the flow rate is low, failing to meet the specifications of ISO 8536-4 (flow rate above 100 mL / min). When conventional closed-type needle-free connector modules are used for drug dispensing, it is easy for drug solution to remain on the outer surface of the first sealing part of the first resilient valve.
[0004] Furthermore, when conventional closed-type needle-free connector modules are used for blood drawing, the blood flows along the curved direction and impacts the inner wall of the through holes. The inner wall of the through holes can easily damage the cell membrane of blood cells, causing blood cells to rupture, and medical staff cannot collect the correct blood data.
[0005] In addition, the top surface of the block is flat, which causes the third elastic valve to reset slowly by its elastic force. No positive pressure is generated inside the connecting pipe, the liquid inside the connecting pipe will flow back, and the sealing effect is poor.
[0006] Furthermore, the bottom surface of the block is flat, which makes the pressure balancing valve prone to arbitrary displacement. When the movable sealing joint and the needle-free connector are separated, the valve body of the pressure balancing valve will reset by its elasticity and generate negative pressure, causing the liquid to flow back.
[0007] In addition, the side wall thickness of the lower cylinder of the movable sealed connector is greater than 1.3mm, which is less flexible and makes it impossible to control the clamping force of the lower cylinder. Users must apply a lot of force to connect the movable sealed connector to the pinless connector, which is quite laborious.
[0008] Furthermore, the second circumferential portion of the second resilient valve does not contact the inner wall of the housing, which makes the second resilient valve prone to tilting and losing its function during the reset process.
[0009] Furthermore, there are three types of needle-free connectors. The first type has only one Luer connector, which can only be used with a syringe and cannot be used with snap-fit or clip-on swivel connectors. The second type has only one small annular protrusion, which can only be used with snap-fit swivel connectors and cannot be used with syringes or clip-on swivel connectors. The third type has only one large annular protrusion, which can only be used with clip-on swivel connectors and cannot be used with syringes or snap-fit swivel connectors. [Summary of the Invention]
[0010] The main objective of this invention is to provide a needle-free, reusable separation device that does not cause drug residue on the outer surface of the first sealing part, the inner wall of the through hole does not damage the cell membrane of blood cells, and the second sealing part can withstand a large back pressure.
[0011] To achieve the aforementioned objective, the present invention provides a needle-free, reusable dispensing device, comprising a movable sealing connector and a needle-free connector. The movable sealing connector comprises a body, a first connecting portion, and a first elastic valve. The body comprises a sleeve, a conduit, and a positioning portion. The conduit is disposed inside the sleeve and has a channel and a first opening. The positioning portion is located inside the sleeve and outside the conduit. The first connecting portion is disposed on the sleeve. The first elastic valve comprises a first circumferential portion and a first sealing portion. The first circumferential portion is fixed to the positioning portion and has a plurality of through holes communicating with the channel. The first sealing portion is disposed at the bottom of the first circumferential portion and located in the channel. The pinless connector includes a housing, a second coupling portion, a screw portion, a connecting tube, and a second resilient valve. The housing has a second opening at a first end. The second coupling portion is located at the second end of the housing and has a third opening. The screw portion is located below the second coupling portion and has an inner conduit. The third opening communicates with the inner conduit. The connecting tube is located within the housing, with a closed end at its top. At least one through hole is longitudinally formed on the side wall of the top of the connecting tube, communicating with the interior of the connecting tube. The second resilient valve is located within the housing and has a second circumferential portion and a second sealing portion. The second circumferential portion surrounds the outside of the connecting tube. The second sealing portion is located at the top of the second circumferential portion and has a slit. The two opposite sides of the top of the second sealing portion are defined as a first side and a second side. The first side has a first protrusion, and the second side has a first protrusion. When the movable sealing connector mates with the pinless connector, the housing enters the sleeve, the connecting tube opens the slit of the second sealing part, the connecting tube pushes against and compresses the first sealing part, the connecting tube passes through the first opening and enters the channel, the connecting tube compresses the second sealing part, the second sealing part compresses the second circumferential part, so that at least one through hole of the connecting tube is exposed outside the second sealing part and located in the channel. When the movable sealing connector separates from the pinless connector, the second circumferential portion pushes against the conduit with its elasticity, causing the movable sealing connector to move, so that the connecting tube disengages from the conduit and returns to the second circumferential portion. The conduit disengages from the second sealing portion, and the second sealing portion resets and closes the second opening with the elasticity of the second circumferential portion. The first protrusions abut against the inner wall of the housing and press inward to compress the slit of the second sealing portion to close tightly and withstand a back pressure. The first end of the housing disengages from the sleeve, and the first sealing portion resets with its elasticity, so that the first sealing portion closes the first opening.
[0012] The advantages of this invention are that, because the through holes are longitudinally opened on the side wall of the top of the upper column, the needle-free connector has the following two advantages: First, the diameter of the through holes is relatively large, and the flow rate of the medicine through the through holes is relatively large, reaching the standard of ISO 8536-4 (flow rate of more than 100 mL / min), and the medicine will not remain on the outer surface of the first sealing part; Second, during the blood drawing procedure, the blood flows in a straight line without hitting the inner wall of the through holes, the inner wall of the through holes will not damage the cell membrane of the blood cells, the blood cells will not rupture, and medical personnel can collect accurate blood data.
[0013] Furthermore, when the first protrusions abut against the inner wall of the housing, the first protrusions will press inward to compress the slit of the second sealing part to close tightly, thereby enhancing the ability of the second sealing part to withstand back pressure and preventing leakage of the medicine.
Implementation Method
[0014] As shown in Figures 1 to 5, the present invention provides a needle-free drug dispensing reusable separation device, including a movable sealed connector 10 and a needle-free connector 20.
[0015] The movable sealing connector 10 includes a body 11, a first engaging portion 12, and a first resilient valve 13. The body 11 includes a sleeve 111, a conduit 112, a positioning portion 113, and a first engaging portion 114. The sleeve 111 includes an upper sleeve portion 1111 and a lower sleeve portion 1112, with the lower sleeve portion 1112 disposed on the outer side of a first end of the upper sleeve portion 1111. The conduit 112 extends from the interior of the upper sleeve portion 1111 to the interior of the lower sleeve portion 1112 and has a channel 1121 and a first opening 1122. The positioning portion 113 is located inside the upper sleeve portion 1111 and is disposed on the outer side of the conduit 112. The first engaging portion 114 includes a plurality of protrusions 1141 and is located near the bottom of the lower sleeve portion 1112. The first connecting portion 12 includes a first end portion 121, a second end portion 122, and a connecting channel 123. The first end portion 121 is disposed at the second end of the upper cylinder portion 1111 and has a groove 1211. The second end portion 122 is a Luer connector. The connecting channel 123 passes through the first end portion 121 and the second end portion 122 and communicates with the groove 1211. The first elastic valve 13 includes a first circumferential portion 131 and a first sealing portion 132. The first circumferential portion 131 is fixed to the positioning portion 113 and has a plurality of through holes 1311, which communicate with the channel 1121. The first sealing portion 132 is disposed at the bottom of the first circumferential portion 131 and is located in the channel 1121.
[0016] The pinless connector 20 includes a housing 21, a second engagement portion 22, a screw portion 23, a connecting tube 24, a second elastic valve 25, a third elastic valve 26, and a balancing pressure valve 27. The housing 21 includes an upper shell 211, a lower shell 212, a second engaging portion 213, a third engaging portion 214, and a stabilizing structure 215. A first end of the upper shell 211 has a second opening 2111. The upper shell 211 is a Luer connector. The outer diameter of the upper shell 211 is smaller than the outer diameter of the lower shell 212. The second engaging portion 213 is an annular protrusion disposed on the outer side of a first end of the lower shell 212. The third engaging portion 214 is an annular protrusion disposed on the outer side of the lower shell 212 and located below the second engaging portion 213. The stabilizing structure 215 is an annular protrusion disposed on the outer side of a second end of the lower shell 212 and located below the third engaging portion 214. The second connecting part 22 is integrally formed with the second end of the lower shell 212 and has a block 221 inside, with a third opening 2211. The screw connection part 23 is located below the second connecting part 22 and has an inner guide tube 231, with the third opening 2211 communicating with the inner guide tube 231. The connecting pipe 24 is located in the shell 21 and includes an upper column 241, a large diameter part 242 and a lower column 243. The upper column 241 is located above the large diameter part 242 and its top end is closed. The side wall of the top of the upper column 241 has a three-way hole 2411 running longitudinally, which communicates with the interior of the upper column 241. The lower column 243 is located below the large diameter part 242 and its bottom end is open. The interiors of the upper column 241, the large diameter part 242 and the lower column 243 communicate with each other. The second elastic valve 25 is disposed in the upper shell 211 and has a second circumferential portion 251 and a second sealing portion 252. The second circumferential portion 251 is disposed around the outside of the upper column 241 and its bottom end abuts against the large diameter portion 242. The second sealing portion 252 is disposed on the top of the second circumferential portion 251 and has a slit 2521. The two opposite sides of the top of the second sealing portion 252 are respectively defined as a first side and a second side. The first side has a first protrusion 2522 and the second side has a first protrusion 2522. The third elastic valve 26 is disposed in the lower housing 212 and has a third circumferential portion 261 and a third sealing portion 262. The third circumferential portion 261 is disposed around the outside of the lower column 243 and its top end abuts against the large diameter portion 242. The third sealing portion 262 is disposed at the bottom end of the third circumferential portion 261 and abuts against an inner sidewall of the second joint portion 22. The second end of the lower housing 212 presses against the top end of the third sealing portion 262. The third sealing portion 262 has a slit 2621. The slit 2621 of the third sealing portion 262 is aligned with the interior of the lower column 243 and the third opening 2211.The balancing pressure valve 27 is disposed between the block 221 and the screw connection 23 and includes a valve body 271 and a fixing part 272. The valve body 271 is hemispherical, has a slit 2711, and a bend 2712 is formed on its outer side. The fixing part 272 is disposed around the outer side of the bend 2712 of the valve body 271. The top of the fixing part 272 abuts against the bottom surface of the block 221, and the side wall and bottom of the fixing part 272 abut against the inner wall of the screw connection 23.
[0017] As shown in Figure 6, when the movable closed connector 10 mates with the pinless connector 20, the upper shell 211 enters the lower cylinder 1112, and a gap 30 is formed between the inner wall of the lower cylinder 1112 and the outer wall of the upper shell 211. The width of the gap 30 is 0.1mm. The first engaging part 114 is fixed to the second engaging part 213. The upper column 241 opens the slit 2521 of the second sealing part 252. The upper column 241 pushes against and compresses the first sealing part 132. The upper column 241 passes through the first opening 1122 and enters the through-hole. Channel 1121, conduit 112 compresses second sealing part 252, second sealing part 252 compresses second circumferential part 251, so that the through holes 2411 of upper column 241 are exposed outside the second sealing part 252 and located in channel 1121, second circumferential part 251 pushes against large diameter part 242, large diameter part 242 compresses third circumferential part 261, lower column 243 opens the slit 2621 of third sealing part 262 and enters third opening 2211, so that channel 1121, connecting pipe 24 and inner conduit 231 are connected.
[0018] As shown in Figure 6, during the drug delivery procedure, a needle-free drug delivery reusable separation device is installed on an infusion system (not shown). The infusion system includes multiple drug mixing devices, multiple infusion drip sleeves, a dispenser, a separator, and an indwelling needle. The infusion system is conventional technology and will not be described in detail here. More specifically, the second end 122 of the first connecting part 12 is connected to an output end 100 of the dispenser, and the screw part 23 is fixed to the Luer connector at a first end of a valve body 200 of the separator. An output end of the separator (not shown) is connected to a second end of the valve body 200 and an indwelling needle (not shown). The medicine in the output end 100 of the dispenser can sequentially pass through the connecting channel 123, the groove 1211, the perforations 1311, the channel 1121, the through holes 2411, the interior of the connecting tube 24, the third opening 2211, the valve body 271 of the balancing pressure valve 27, the inner conduit 231, the valve body 200, the output end of the separator and the indwelling needle, and then enter the patient's body.
[0019] Because the through holes 2411 are longitudinally opened on the side wall of the top of the upper column 241, the needle-free connector 20 has the following two effects: First, the diameter of the through holes 2411 is relatively large, and the flow rate of the medicine through the through holes 2411 is relatively large, reaching the standard of ISO 8536-4 (flow rate above 100 mL / min), and the medicine will not remain on the outer surface of the first sealing part 132; Second, when performing the blood drawing procedure, the blood flows in a straight line without hitting the inner wall of the through holes 2411, the inner wall of the through holes 2411 will not damage the cell membrane of the blood cells, the blood cells will not rupture, and medical personnel can collect accurate blood data.
[0020] In case the medicine bag falls off during the infusion process, or when the patient coughs, or when the medicine bag is lower than the body, the balancing pressure valve 27 can prevent blood backflow.
[0021] As shown in Figure 5, when the movable sealing connector 10 separates from the pinless connector 20, a pull-out force of 2 to 5 Newtons is applied to the first engaging portion 114, causing the first engaging portion 114 to disengage from the second engaging portion 213. The third circumferential portion 261, through its elastic large-diameter portion 242, causes the connecting tube 24 and the second elastic valve 25 to move, and the lower column 243 returns to the interior of the third circumferential portion 261. The slit 2621 of the third sealing portion 262 closes, and the second circumferential portion 251, through its elasticity, pushes against the guide tube 112, causing the movable sealing connector 10 to move, causing the upper column 243 to move. 41 Disconnects from the conduit 112 and returns to the second circumferential portion 251. The conduit 112 disconnects from the second sealing portion 252. The second sealing portion 252 is reset by the elastic force of the second circumferential portion 251 and closes the second opening 2111. The first protrusions 2522 abut against the inner wall of the upper shell 211 of the housing 21 and press inward to compress the slit 2521 of the second sealing portion 252 tightly and withstand a back pressure. The first end of the upper shell 211 disconnects from the sleeve 111. The first sealing portion 132 is reset by its elastic force, so that the first sealing portion 132 closes the first opening 1122.
[0022] In other words, the movable closure connector 10 of the first embodiment uses the protrusions 1141 of the first engagement portion 114 to fix or disengage the second engagement portion 213 of the pinless connector 20, and has the characteristic of easy disengagement, and can be referred to as "easy-to-disengage engagement movable closure connector 10".
[0023] Because the through holes 2411 are longitudinally formed on the side wall of the top of the upper column 241, the ability of the connecting pipe 24 to withstand back pressure is reduced. To address this problem, the present invention provides first protrusions 2522 on the first and second sides of the second sealing part 252. When the first protrusions 2522 abut against the inner side wall of the upper shell 211, they press inward to compress the slit 2521 of the second sealing part 252, thereby improving the ability of the second sealing part 252 to withstand back pressure and preventing leakage of the medicine. Experiments have shown that, compared with the prior art, the first protrusions 2522 can improve the ability of the second sealing part 252 to withstand back pressure by about 1 to 1.5 times.
[0024] Because a pull-out force of 2 to 5 Newtons is applied to the first engaging part 114, it has an easy effect. Even if the patient moves around, the movable sealing connector 10 and the needle-free connector 20 will immediately separate and prevent leakage of medicine and blood. It can be disinfected with alcohol swabs for reuse without replacement.
[0025] Because the gap 30 between the inner wall of the lower cylinder 1112 and the outer wall of the upper shell 211 is only 0.1 mm, the shell 21 is quite stable and will not tilt when the movable closed connector 10 mates with the pinless connector 20, reducing the impact on the stability of the pull-out force applied to the first engaging part 114. Therefore, experimental data showing ten mating and disassembly cycles of the movable closed connector 10 and the pinless connector 20 demonstrate that the pull-out force applied to the first engaging part 114 can be stably maintained within the range of 2 to 5 Newtons, without causing an increase in the variation of the pull-out force drop.
[0026] In the first embodiment, as shown in FIG5, the top surface of the block 221 has a second protrusion 2212, and the third sealing part 262 abuts against the second protrusion 2212. As shown in FIG6, when the movable sealing connector 10 is connected to the needle-free connector 20, the second protrusion 2212 compresses the bottom surface of the third sealing part 262, causing the bottom surface of the third sealing part 262 to be concave to form a recess. As shown in FIG5, when the movable sealing connector 10 is separated from the needle-free connector 20, the second protrusion 2212 no longer compresses the bottom surface of the third sealing part 262, and the third elastic valve 26 quickly resets due to its elasticity, causing a positive pressure to be generated inside the connecting pipe 24. The positive pressure will spray the liquid inside the connecting pipe 24 upward through the through holes 2411, preventing the liquid from flowing back and improving the sealing effect.
[0027] In the first embodiment, as shown in FIG5, the bottom surface of the block 221 has a third protrusion 2213. The third protrusion 2213 abuts against the valve body 271 of the balancing pressure valve 27. The balancing pressure valve 27 is restricted by the third protrusion 2213 and will not move arbitrarily. When the movable sealing connector 10 is separated from the needle-free connector 20, the valve body 271 of the balancing pressure valve 27 will return to its initial state by its elasticity, but will not generate negative pressure, thus preventing backflow of the medicine.
[0028] In the first embodiment, as shown in FIG5, the thickness of the bottom of the lower cylinder portion 1112 is less than 1.3 mm. This makes the lower cylinder portion 1112 elastic, and the clamping force of the lower cylinder portion 1112 is easily controlled. When the movable closed connector 10 mates with the pinless connector 20, the user only needs to apply slight force to complete the mating action, which is quite labor-saving. Preferably, the thickness of the bottom of the lower cylinder portion 1112 is 0.8 mm.
[0029] As shown in Figures 7, 8, and 9, the difference between the second embodiment and the first embodiment is as follows: First, the connecting pipe 24A is conical, and the bottom end of the connecting pipe 24A is integrally formed with the top surface of the block 221A; Second, there is no third elastic valve 26, the bottom end of the second circumferential portion 251A abuts against the top surface of the block 221A, and the second end of the lower shell 212 presses against the bottom of the second circumferential portion 251A; Third, the inner wall of the upper shell 211A has an annular chamfer 211. 2. The second elastic valve 25A has a conical portion 253, which is disposed between the second circumferential portion 251A and the second sealing portion 252. When the movable sealing connector 10 is separated from the pinless connector 20A, the conical portion 253 abuts against the annular chamfer 2112, so that the second elastic valve 25A is guided during the reset process to prevent the second elastic valve 25A from being misaligned and losing its function; Fourth, the top surface of the block 221A is a plane without the second protrusion 2212.
[0030] As shown in Figures 10, 11 and 12, the difference between the third embodiment and the second embodiment is as follows: First, the second connecting part 22A has no block 221A inside, the second connecting part 22A is integrally formed with the screw part 23 and has a third opening 2211; Second, the housing 21A does not include the third engaging part 214 and the stabilizing structure 215, the third engaging part 214 and the stabilizing structure 215 are provided on the outer side of the second connecting part 22A; Third, the bottom end of the connecting tube 24A is integrally formed with the second connecting part 22A, and the bottom end of the second circumferential part 251A abuts against the second connecting part 22A; Fourth, the pinless connector 20B has no balancing pressure valve 27.
[0031] As shown in Figure 13, the second end 122 of the first joint 12 is mounted on an automated device 300, which can automatically connect the movable closed connector 10 and the pinless connector 20B.
[0032] As shown in Figures 14 to 17, the difference between the fourth embodiment and the second embodiment is that the number of through holes 2411 in the connecting tube 24B of the pinless connector 20C is two.
[0033] As shown in Figures 18, 19 and 20, the difference between the fifth embodiment and the third embodiment is that the number of through holes 2411 in the connecting tube 24B of the pinless connector 20D is two.
[0034] As shown in Figures 21 and 22, the sixth embodiment differs from the previous embodiments in that: firstly, the sleeve 111A includes an upper cylinder portion 1111A, a middle cylinder portion 1113, and a lower cylinder portion 1112A. The middle cylinder portion 1113 is disposed between a first end of the upper cylinder portion 1111A and a first end of the lower cylinder portion 1112A. A first through hole 1114 is opened between a side wall of the upper cylinder portion 1111A and a side wall of the middle cylinder portion 1113. A second through hole 1115 is opened between a side wall of the middle cylinder portion 1113 and a side wall of the lower cylinder portion 1112A. The conduit 112 extends from the interior of the upper cylindrical portion 1111A to the interior of the middle cylindrical portion 1113; secondly, the first engaging portion 114A includes two clamping arms 1142, each clamping arm 1142 including an arm portion 11421, a connecting portion 11422, and a hook portion 11423. The connecting portion 11422 is disposed in the upper cylindrical portion 1111A, passes through the first through hole 1114 from the interior of the upper cylindrical portion 1111A, and connects to the arm portion 11421. The hook portion 11423 is disposed at one end of the arm portion 11421 and is located in the second through hole 1115; thirdly, when the movable closed connector 10A is mated with the pinless connector 20D, the third engaging portion... 214 is located in the second through hole 1115. The hook portion 11423 is fixed to a bottom end of the third engaging portion 214. An inner side of the lower cylinder portion 1112A abuts against an outer side of the stabilizing structure 215, so the lower shell 212 will not shake in the lower cylinder portion 1112A. Fourth, when the movable sealing connector 10A is separated from the needle-free connector 20D, a pulling force is applied to the arm portion 11421, causing the hook portion 11423 to disengage from the third engaging portion 214. Fifth, the second end 122 of the first connecting portion 12 is connected to a syringe 100A, and the screw portion 23 is fixed to a Luer connector at a first end of a valve body 200A. The above technical features make it difficult to remove the hook portion 11423 from the third engaging portion 214, and the hook portion 11423 can only be disengaged from the third engaging portion 214 by pressing the arm portion 11421. It is worth mentioning that without the aforementioned technical features, the movable closure connector 10A would be prone to detachment, leading to additional costs for medical equipment and personnel, increasing the risk of bacterial infection for patients undergoing treatment, and failing to achieve the desired medical effect, thus raising concerns about the patient's chances of recovery. In other words, the movable closure connector 10A uses the clamping arms 1142 of the first engaging portion 114A to fix or detach from the third engaging portion 214 of the pinless connector 20D, and has the characteristic of being difficult to detach; it can be referred to as a "difficult-to-detach clamp-type movable closure connector".
[0035] The seventh embodiment (not shown) differs from the previous embodiments in that the upper shell 211 is used to attach to a syringe 100A.
[0036] Because the upper shells 211 and 211A of the housings 21 and 21A of the needle-free connectors 20, 20A, 20B, 20C, and 20D are Luer connectors, and the lower shells 212 of the housings 21 and 21A of the needle-free connectors 20, 20A, 20B, 20C, and 20D have a second engaging portion 213, and the lower shells 212 or the second engaging portions 22 and 22A of the housings 21 and 21A of the needle-free connectors 20, 20A, 20B, 20C, and 20D have a third engaging portion 214, the needle-free connectors 20, 20A, 20B, 20C, and 20D of all embodiments can be connected to syringes, easily detachable snap-fit movable closure connectors 10, and difficult-to-detach clip-type movable closure connectors 10A, providing medical personnel with multiple options. For example, if medical staff want to take a blood sample or add a non-toxic general medication, they can choose to connect the needle-free connectors 20, 20A, 20B, 20C, and 20D to the syringe; if the patient is prone to movement, they can choose to connect the needle-free connectors 20, 20A, 20B, 20C, and 20D to the easily detachable snap-fit closure connector 10; if the patient needs to be infused with highly toxic drugs such as chemotherapy drugs, they can choose to connect the needle-free connectors 20, 20A, 20B, 20C, and 20D to the difficult-to-detach clip-fit closure connector 10A.
[0037] Herein, the term "medical device" is used to mean any medical device commonly used in the medical field, except for any different form of implementation other than the connector disclosed herein, and capable of being connected or combined with other related connector devices for medical purposes. [Simplified Explanation of the Diagram]
[0038] Figure 1 is a perspective view of the separation device according to the first embodiment of the present invention. Figure 2 is an exploded view of the separation device according to the first embodiment of the present invention. Figure 3 is an exploded view of the pinless connector according to the first embodiment of the present invention. Figure 4 is a top view of the connecting tube according to the first embodiment of the present invention. Figure 5 is an exploded cross-sectional view of the separation device according to the first embodiment of the present invention. Figure 6 is a schematic diagram of liquid passing through the separation device according to the first embodiment of the present invention. Figure 7 is an exploded view of the pinless connector according to the second embodiment of the present invention. Figure 8 is an exploded cross-sectional view of the separation device according to the second embodiment of the present invention. Figure 9 is a schematic diagram of liquid passing through the separation device according to the second embodiment of the present invention. Figure 10 is an exploded view of the pinless connector according to the third embodiment of the present invention. Figure 11 is an exploded cross-sectional view of the separation device according to the third embodiment of the present invention. Figure 12 is a schematic diagram of liquid passing through the separation device according to the third embodiment of the present invention. Figure 13 is a schematic diagram of the separation device according to the third embodiment of the present invention installed in an automated device. Figure 14 is an exploded view of the pinless connector according to the fourth embodiment of the present invention. Figure 15 is a top view of the connecting tube according to the fourth embodiment of the present invention. Figure 16 is an exploded cross-sectional view of the separation device according to the fourth embodiment of the present invention. Figure 17 is a schematic diagram of liquid passing through the separation device according to the fourth embodiment of the present invention. Figure 18 is an exploded view of the pinless connector according to the fifth embodiment of the present invention. Figure 19 is a cross-sectional view of the separation device according to the fifth embodiment of the present invention. Figure 20 is a schematic diagram of liquid passing through the separation device according to the fifth embodiment of the present invention. Figure 21 is a cross-sectional view of the separation device according to the sixth embodiment of the present invention. Figure 22 is a schematic diagram of liquid passing through the separation device according to the sixth embodiment of the present invention.
Claims
1. A needle-free, reusable dispensing device, comprising: A movable sealing connector includes a body, a first connecting portion, and a first resilient valve. The body includes a sleeve, a conduit, and a positioning portion. The conduit is disposed inside the sleeve and has a channel and a first opening. The positioning portion is located inside the sleeve and outside the conduit. The first connecting portion is disposed on the sleeve. The first resilient valve includes a first circumferential portion and a first sealing portion. The first circumferential portion is fixed to the positioning portion and has a plurality of through holes communicating with the channel. The first sealing portion is disposed at the bottom of the first circumferential portion and located in the channel. A pinless connector includes a housing, a second connecting portion, a screw connection, a connecting tube, and a second resilient valve. A first end of the housing has a second opening. A second joint is disposed at a second end of the housing and has a third opening. A screw-in part is disposed below the second joint and has an inner conduit. The third opening communicates with the inner conduit. A connecting pipe is disposed in the housing. The top end of the connecting pipe is a closed end. At least one through hole is longitudinally opened on the side wall of the top of the connecting pipe. The at least one through hole communicates with the interior of the connecting pipe. A second elastic valve is disposed in the housing and has a second circumferential part and a second sealing part. The second circumferential part is disposed around the outside of the connecting pipe. The second sealing part is disposed at the top of the second circumferential part and has a slit. The two opposite sides of the top of the second sealing part are respectively defined as a first side and a second side. The first side has a first protrusion and the second side has a first protrusion. When the movable sealing connector mates with the pinless connector, the housing enters the sleeve, the connecting tube opens the slit of the second sealing part, the connecting tube pushes against and compresses the first sealing part, the connecting tube passes through the first opening and enters the channel, the connecting tube compresses the second sealing part, the second sealing part compresses the second circumferential part, so that at least one through hole of the connecting tube is exposed outside the second sealing part and located in the channel; When the movable sealing connector separates from the pinless connector, the second circumferential portion pushes against the conduit with its elasticity, causing the movable sealing connector to move, so that the connecting tube disengages from the conduit and returns to the second circumferential portion. The conduit disengages from the second sealing portion, and the second sealing portion resets and closes the second opening with the elasticity of the second circumferential portion. The first protrusions abut against the inner wall of the housing and press inward to compress the slit of the second sealing portion to close tightly and withstand a back pressure. The first end of the housing disengages from the sleeve, and the first sealing portion resets with its elasticity, so that the first sealing portion closes the first opening.
2. The separation device as claimed in claim 1, wherein, The connecting tube includes an upper column, a large-diameter section, and a lower column. The upper column is positioned above the large-diameter section and has a closed top end. At least one through hole is longitudinally formed on the side wall of the top of the upper column, communicating with the interior of the upper column. The lower column is positioned below the large-diameter section and has an open bottom end. The interiors of the upper column, the large-diameter section, and the lower column communicate with each other. A second circumferential portion surrounds the outer side of the upper column, and its bottom end abuts against the large-diameter section. The pinless connector further includes a third elastic valve, and the interior of the second coupling portion has a solid... The block has the third opening, and the top surface of the block has a second protrusion. The third elastic valve is disposed in the housing and has a third circumferential portion and a third sealing portion. The third circumferential portion surrounds the outside of the lower column and its top end abuts against the large-diameter portion. The third sealing portion is disposed at the bottom end of the third circumferential portion and abuts against an inner sidewall of the second joint and the second protrusion. The second end of the housing presses against the top end of the third sealing portion. The third sealing portion has a slit, and the slit of the third sealing portion is aligned with the interior of the lower column and the third opening. When the movable sealing joint is connected to the... When the pinless connector is mated, the upper post opens the slit of the second sealing part, the upper post pushes against and compresses the first sealing part, the upper post passes through the first opening and enters the channel, the guide tube compresses the second sealing part, the second sealing part compresses the second circumferential part, so that at least one through hole of the upper post is exposed outside the second sealing part and located in the channel, the second circumferential part pushes against the large diameter part, the large diameter part compresses the third circumferential part, the second protrusion compresses the bottom surface of the third sealing part, so that the bottom surface of the third sealing part is concave to form a recess, and the lower post opens the slit of the third sealing part and enters. The third opening connects the channel, the connecting tube, and the inner conduit. When the movable sealing joint separates from the needle-free connector, the third circumferential portion pushes against the large-diameter portion with its elasticity, causing the connecting tube and the second elastic valve to move. The lower column returns to the interior of the third circumferential portion, the second protrusion no longer compresses the bottom surface of the third sealing portion, and the third elastic valve quickly resets with its elasticity, generating a positive pressure inside the connecting tube. The second circumferential portion pushes against the conduit with its elasticity, causing the movable sealing joint to move, so that the upper column disengages from the conduit and returns to the second circumferential portion.
3. The separation device as claimed in claim 1, wherein, The interior of the second joint has a block with the third opening. The connecting tube is conical, and its bottom end is integrally formed with the top surface of the block. The bottom end of the second circumferential portion abuts against the top surface of the block, and the second end of the housing presses against the bottom of the second circumferential portion. The inner wall of the housing has an annular chamfer, and the second elastic valve has a conical portion disposed between the second circumferential portion and the second sealing portion. When the movable sealing joint is separated from the pinless connector, the conical portion abuts against the annular chamfer.
4. The separation device as described in claim 2 or 3, wherein, The pinless connector further includes a balancing pressure valve disposed between the block and the screw connection portion. The bottom surface of the block has a third protrusion that abuts against the balancing pressure valve.
5. The separation device as claimed in claim 1, wherein, The second connecting part is integrally formed with the screw connection part. The connecting tube is conical, and the bottom end of the connecting tube is integrally formed with the second connecting part. The bottom end of the second circumferential part abuts against the second connecting part. The second end of the housing presses against the bottom of the second circumferential part. The inner sidewall of the housing has an annular chamfer. The second elastic valve has a conical part, which is disposed between the second circumferential part and the second sealing part. When the movable sealing joint is separated from the pinless connector, the conical part abuts against the annular chamfer.
6. The separation apparatus as claimed in claim 1, wherein, The first end of the housing is a Luer connector for attachment to a syringe; the body includes a first engaging portion, which includes at least one protrusion or two clamping arms; the housing has a second engaging portion, which is an annular protrusion; the housing or the second engaging portion has a third engaging portion, which is an annular protrusion located below the second engaging portion; when the movable closure connector mates with the needle-free connector and the first engaging portion includes the at least one protrusion, the first engaging portion is fixed to the second engaging portion; when the... When the movable closure connector is separated from the pinless connector and the first engaging portion includes the at least one protrusion, a pull-out force of 2 to 5 Newtons is applied to the first engaging portion to disengage it from the second engaging portion; wherein, when the movable closure connector is mated with the pinless connector and the first engaging portion includes two clamping arms, the first engaging portion is fixed to the third engaging portion; wherein, when the movable closure connector is separated from the pinless connector and the first engaging portion includes two clamping arms, a pull-out force is applied to the first engaging portion to disengage it from the third engaging portion.
7. The separation device as claimed in claim 6, wherein, The sleeve includes an upper sleeve portion and a lower sleeve portion. The lower sleeve portion is disposed on the outside of a first end of the upper sleeve portion. The conduit extends from the interior of the upper sleeve portion to the interior of the lower sleeve portion. The first engaging portion includes at least one protrusion and is close to the bottom of the lower sleeve portion. The thickness of the bottom of the lower sleeve portion is less than 1.3 mm.
8. The separation device as claimed in claim 7, wherein, The thickness of the bottom of the lower cylinder is 0.8 mm.
9. The separation device as claimed in claim 1, wherein, When the movable closed connector mates with the pinless connector, a gap is formed between the inner wall of the sleeve and the outer wall of the first end of the housing, and the width of the gap is 0.1 mm.