TWI567321B - Foolproof closed connector - Google Patents

Description

Hysteresis closed connector

The present invention relates to a closed joint for medical or laboratory instruments.

Luer taper is a standardized micro-non-permeable joint, including male and female joints. The male and female joints are connected to each other by screwing, so they can be screwed and loosened in both directions. Luer fittings are widely used in medical and laboratory instruments. In medicine, syringes, drip bottles, infusion machines, and medicine bags are connected to the infusion tube through a Luer connector to deliver the drug to the patient.

However, since the male and female joints can be loosened by the threads at the junction of the two, it is easy for the user to accidentally loosen the two during use, causing the medicament to be connected from the male and female joints. The problem of leaking at the gap causes a waste of the medicament. Moreover, some of the agents are toxic, which will harm the caregivers, their families and other patients, and cause environmental pollution. In addition, the leakage of the drug will also cause the drug in the input patient to be short, so that the therapeutic effect of the drug on the patient is reduced, and even the life of the patient is endangered.

Moreover, in some areas where space is insufficient, the pipeline connecting the female joints will be distorted, which affects the smoothness of the delivery of the medicament. It is usually necessary to unscrew the female connector from the male connector and then rearrange the twisted tubing into a straight line, which is cumbersome to operate and risking leakage of the medicament.

The main object of the present invention is to provide a foolproof closed type joint, the first ratchet selectively engaging the second ratchet and the first connecting member driving the second connecting member to be unidirectionally screwed and fixed to the second component. The effect of preventing the second connector from coming loose from the second component is achieved. After being completely screwed and fixed to the second component, the second ratchet can be broken to achieve the effect that the second connecting member rotates 360 degrees relative to the first connecting member by the sliding rail and the sliding slot, so that the second component of the infusion tube Can be easily arranged into a straight line, solve the problem of twisting in one fell swoop, and the second connecting member can also remain screwed to the second component, and the second connecting member does not move axially relative to the first connecting member at all without loose Distracted doubts.

In order to achieve the foregoing objects, the present invention provides a foolproof closed type joint for connecting between a first component and a second component, the foolproof closed type connector including a first connector and a first Two connectors.

The first connecting member includes a first end portion and a second end portion, and the first end portion of the first connecting member forms a groove and a plurality of first ratchet teeth, wherein the first ratchet teeth are disposed in the groove The wall is configured to connect the first component.

The second connecting member includes a first end portion, a second end portion and a large diameter portion, and the first end portion of the second connecting member forms a plurality of second ratchet teeth, and the first end portion of the second connecting member Provided in the recess, the first ratchets are selectively engaged with the second ratchets, and the first connecting member drives the second connecting member to rotate in a single direction in a first direction to enable the first The second end of the two connecting members is screwed and fixed to the second component, the large diameter segment is disposed between the first and second ends of the second connecting member, and the outer diameter is greater than the first of the second connecting members , the outer diameter of the second end, the inside of the groove One side of the outer side of the large diameter section of the second connecting member is provided with a sliding rail, and the other is provided with a sliding slot. The sliding rail is disposed on the sliding slot, wherein the second connecting member is second. After the end portion is screwed to the second component, the first connecting member rotates in the first direction or the second connecting member rotates in a reverse direction of the first direction, so that the second ratchet is replaced by the first A ratchet is broken to rotate the second connecting member 360 degrees relative to the first connecting member by the sliding rail and the sliding slot.

According to a preferred embodiment, the inner side wall of the groove is provided with the sliding rail, and the sliding rail is located above the first ratchet, and the outer side of the large diameter section is provided with the sliding groove. Preferably, the slide rail is composed of a plurality of blocks spaced apart. Wherein the first ratchet is divided into a plurality of first ratchet sets comprising a plurality of first ratchets, each block being located above each of the two first ratchet sets.

According to a preferred embodiment, the number of the second ratchets is less than the number of the first ratchets.

According to a preferred embodiment, the first ratchet rings are disposed on the inner side wall of the recess, and the second ratchet rings are disposed on the outer side of the first end of the second connecting member.

According to a preferred embodiment, the first ratchet rings are disposed on the inner bottom surface of the recess, and the second ratchet rings are disposed on the bottom of the first end of the second connecting member.

According to a preferred embodiment, the foolproof closed type joint further includes a gasket, and the inner bottom surface of the groove protrudes upwardly from the plug block, and the plug block includes a large diameter section and a small diameter section, and the large diameter The segment is connected to the inner bottom surface of the groove, the small diameter segment is disposed on a side of the large diameter segment away from the inner bottom surface of the groove, and the bottom end of the first end portion of the second connecting member is axially concavely formed a plugging groove, the inner side wall of the plugging groove is provided with a ring recess, the plugging block is disposed in the plugging groove, the gasket is disposed outside the small diameter section of the plugging block and protrudes from the outer peripheral surface thereof by a ring convex The ring is convexly located in the annular recess of the inner side wall of the insertion slot.

The effect of the invention is that the first connector can only drive the second connector to rotate unidirectionally in the first direction. Thereby, after the second connecting member is screwed and fixed to the second component, it cannot rotate in the opposite direction of the first direction to achieve the function of not being loosened from the second component, thereby further preventing liquid leakage. Moreover, after the second ratchet is broken, the second connecting member can be rotated 360 degrees with respect to the first connecting member by the sliding rail and the sliding slot. Thereby, the second component of the infusion tube can be easily arranged into a straight line and solve the problem of distortion, and the second connector can also remain screwed to the second component, and the second connector is not completely opposite to the first component. The connector moves axially without the doubt of looseness.

10‧‧‧Danger-proof closed joint

20‧‧‧First component

21‧‧‧ first end

22, 22’, 22” ‧ ‧ second end

221‧‧‧ male connector

222‧‧‧

2221‧‧‧ internal thread

23‧‧‧ Room

30‧‧‧second component

31‧‧‧ first end

311‧‧‧ male connector

3111‧‧‧ channel

312‧‧‧

3121‧‧‧ internal thread

40‧‧‧medicine bags

50‧‧‧First connector

51, 51’, 51” ‧ ‧ first end

511‧‧‧ Groove

512‧‧‧First ratchet

513‧‧‧First ratchet group

514‧‧‧First cogging

5151‧‧‧Block

516‧‧‧ Socket block

5161‧‧‧ Large diameter section

5162‧‧‧Small path

52‧‧‧second end

53‧‧‧First through hole

60‧‧‧Second connection

61‧‧‧First end

611‧‧‧second ratchet

612‧‧‧ Socket slot

6121‧‧‧

62‧‧‧second end

621‧‧‧ external thread

622‧‧‧Second through hole

63‧‧‧ Large diameter section

631‧‧ ‧ chute

70‧‧‧ Washer

71‧‧‧ ring convex

A, B‧‧ arrows

Fig. 1 is a perspective view showing a first embodiment of the present invention.

Fig. 2 is an exploded view of the first embodiment of the present invention.

Figure 3 is a cross-sectional view showing a first embodiment of the present invention.

Figure 4 is a schematic illustration of the first embodiment of the present invention coupled to a second component, wherein the second component is a syringe.

Fig. 5 is a schematic view showing the first embodiment of the present invention connected between the first and second components, wherein the first component is connected to the medicine bag and the second component is an infusion tube.

Figure 6 is a schematic view showing the first connecting member driving the second connecting member unidirectionally rotating in the first direction in the first embodiment of the present invention.

Figure 7 is a schematic view showing the second connecting member rotated 360 degrees with respect to the first connecting member after the second ratchet of the first embodiment of the present invention is broken.

Figure 8 is a cross-sectional view showing a second embodiment of the present invention.

Figure 9 is a perspective view of a third embodiment of the present invention.

Figure 10 is a cross-sectional view showing a fourth embodiment of the present invention.

Figure 11 is a cross-sectional view showing a fifth embodiment of the present invention.

Figure 12 is a cross-sectional view showing a sixth embodiment of the present invention.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

1 to 5, FIG. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is an exploded view of a first embodiment of the present invention, and FIG. 3 is a cross section of the first embodiment of the present invention. Figure 4 is a schematic view showing the connection of the first embodiment of the present invention to the second component, wherein the second component is a syringe, and Figure 5 is a first embodiment of the present invention connected between the first component and the second component A schematic view of a first component connected to a pouch and a second component being an infusion tubing. The present invention provides a foolproof closed joint 10 for connection between a first component 20 and a second component 30. The first assembly 20 includes a first end portion 21, a second end portion 22 and a connecting wall. The connecting wall is connected between the first and second end portions 21, 22 and encloses a chamber 23. The second end portion 22 protrudes from a male connector 221. The male connector 221 is surrounded by a ring wall 222. The ring wall 222 is provided with an internal thread 2221. The second component 30 includes a first end portion 31 protruding from a male connector 311 having a passage 3111. The circumference of the male joint 311 surrounds a ring wall 312, and the ring wall 312 is provided with an internal thread 3121. The second component 30 may be a syringe as shown in FIG. Alternatively, the first component 20 may be connected to a medicine bag 40 by its internal thread 2221 and the male connector 221, and the second component 30 is an infusion tube, as shown in FIG. In the example shown in Figure 5, the first component 20 can also be connected to an infusion machine or a drop bottle. The foolproof closed type connector 10 includes a first connecting member 50, a second connecting member 60 and a washer 70.

The first connecting member 50 includes a first end portion 51 and a second end portion 52. The first end portion 51 defines a recess 511 and a plurality of first ratchet teeth 512 . The first ratchet teeth 512 are disposed on the inner side wall of the recess 511 . In other words, the first ratchets 512 extend radially from the inner sidewall of the recess 511 toward the axis of the recess 511. Preferably, the first ratchets 512 are divided into a plurality of first ratchet sets 513 comprising a plurality of first ratchet teeth 512, the first ratchet sets 513 being circumferentially arranged. As can be observed from FIG. 6, each of the first ratchet sets 513 includes three first ratchets 512. A first slot 514 is formed between each of the two first ratchets 512. The inner side wall of the groove 511 is provided with a slide rail, and the slide rail is located above the first ratchet teeth 512. Preferably, the slide rail is composed of a plurality of blocks 5151 spaced apart, and each block 5151 is located just above each of the two first ratchet groups 513. In other words, each block 5151 is just offset from every two first ratchet groups 513. The insertion block 516 protrudes upward from the center of the inner bottom surface of the recess 511. The plug block 516 includes a large diameter section 5161 and a small diameter section 5162. The large diameter section 5161 is connected to the recess 511. The bottom surface of the small diameter section 5162 is disposed on a side of the large diameter section 5161 away from the inner bottom surface of the recess 511. The outer diameter of the first end portion 51 is greater than the second end portion 52 and is substantially equal to the outer diameter of the first end portion 21 of the first component. The second end portion 52 of the first connecting member is inserted into the first end portion 21 of the first component, and the first end portion 51 of the first connecting member abuts against the first end portion 21 of the first component the top of. The first connecting member 50 has a first through hole 53 extending through the plugging block 516 and the second end portion 52 and communicating with the chamber 23 of the first component.

The second connecting member 60 includes a first end portion 61, a second end portion 62 and a large diameter portion 63. The first end portion 61 of the second connector forms a plurality of second ratchet teeth 611. More specifically, The second ratchet teeth 611 are annularly disposed outside the first end portion 61 of the second connecting member. In other words, the second ratchet teeth 611 extend radially from the outer side of the first end portion 61 of the second connecting member away from the axis of the second connecting member 60, and thus the second connecting member The one end portion 61 is actually a ratchet. The large diameter section 63 is disposed between the first and second end portions 61, 62 of the second connecting member and has an outer diameter larger than an outer diameter of the first and second end portions 61, 62 of the second connecting member. A chute 631 is disposed on the outer side of the large diameter section 63. The bottom end of the first end portion 61 of the second connecting member is axially recessed to form a plugging groove 612, and the plugging groove 612 further extends to the large diameter portion 63. An annular recess 6121 is defined in the inner side wall of the insertion slot 612. An outer thread 621 is formed on the outer side of the second end portion 62 of the second connecting member, and a second through hole 622 is defined in the inner side. The second through hole 622 is in communication with the insertion slot 612. The first end portion 61 of the second connecting member is disposed in the recess 511 and the second ratchet teeth 611 extend into the corresponding first slots 514 to engage the first ratchets 512. The number of the second ratchets 611 is equal to or smaller than the number of the first ratchets 512. The plug block 516 is disposed in the plug slot 612. The blocks 5151 of the slide rail are disposed in the chute 631. When the plug block 516 is disposed in the plug slot 612 and the second end portion 62 of the second connector is screwed to the internal thread 3121 of the ring wall of the second component by the external thread 621 thereof, the plug The connector 311 is inserted into the second through hole 622, and the first through hole 53 communicates with the channel 3111 of the male connector of the second component, as shown in FIG.

The gasket 70 is disposed outside the small diameter section 5162 of the plug block and has an annular protrusion 71 protruding from the outer peripheral surface thereof. The ring protrusion 71 is located in the annular recess 6121 of the inner side wall of the insertion slot.

Referring to FIG. 6, a first connector of the first embodiment of the present invention drives a second connector to rotate unidirectionally in a first direction. When the foolproof closed type connector 10 of the present invention is connected to the second component 30, the first connecting member 50 is first rotated in a first direction (as indicated by the arrow A in FIG. 6), the first connecting member 50 by the first ratchet 512 pointing to the arrow A The first direction pushes the second ratchets 611. Thereby, the second connecting member 60 can be driven to rotate in the first direction indicated by the arrow A. When the second connecting member 60 is rotated in the first direction indicated by the arrow A, the second end portion 62 of the second connecting member is screwed to the internal thread 3121 of the ring wall of the second component by the external thread 621 thereof. The male connector 311 is inserted into the second through hole 622 until the second end portion 62 of the second connecting member is screwed and fixed to the second component 30. It is worth mentioning that the first ratchets 512 push the second ratchets 611 only when rotating in the first direction indicated by the arrow A, so when the first connecting member 50 is in the first direction When the reverse direction (that is, the reverse direction of the direction indicated by the arrow A) is rotated, the second ratchet teeth 611 are disengaged from the first slots 514 and are no longer engaged with the first ratchets 512. The first connecting member 50 cannot drive the second connecting member 60 to rotate in the opposite direction of the first direction (that is, the opposite direction to the direction indicated by the arrow A), causing the second connecting member 60 to idling.

When the second component 30 is an infusion tube, the second component 30 may generate a twist tube after the second end portion 62 of the second connector is screwed to the first end portion 31 of the second component ( That is, a pipe with severe distortion. At this time, the user can strongly rotate the first connecting member 50 in a first direction indicated by the arrow A, or strongly rotate the second connecting member 60 in a direction opposite to the first direction indicated by the arrow A, so that the user The second ratchet 611 is broken by the first ratchets 512 as shown in FIG. Thereby, the second connecting member 60 can be freely rotated 360 degrees with respect to the first connecting member 50, that is, 360 degrees in the direction of the arrow A and the arrow B shown in FIG. 7, and the second component 30 is caused. Can be twisted into a straight line to solve the problem of the twist tube.

Referring to Figure 8, there is shown a cross-sectional view of a second embodiment of the present invention. The second embodiment of the present invention is substantially the same as the first embodiment. The difference is that the first ratchet teeth 512 are disposed on the inner bottom surface of the recess 511, and the second ratchet teeth 611 are disposed on the first surface. First end of the two connectors The bottom of the part 61. In other words, the first ratchet teeth 512 protrude upward from the inner bottom surface of the recess 511, and the second ratchet teeth 611 protrude downward from the bottom of the first end portion 61 of the second connecting member. of.

Referring to Figure 9, there is shown a perspective view of a third embodiment of the present invention. The third embodiment of the present invention is substantially the same as the first embodiment described above, except that the gasket 70 is omitted from the foolproof closed joint 10, and the inner side wall of the plug groove also omits the annular recess 6121 to be a flat surface.

Referring to Figure 10, there is shown a cross-sectional view of a fourth embodiment of the present invention. The fourth embodiment of the present invention is substantially the same as the first embodiment described above, except that the bottom end of the first end portion 51 of the first connecting member is joined to by the ultrasonic welding or other bonding means. The top of the first end 21 of the first component.

Referring to Figure 11, there is shown a cross-sectional view of a fifth embodiment of the present invention. The fifth embodiment of the present invention is substantially the same as the first embodiment described above, except that the structure of the first component of the present embodiment is different from the structure of the first component 20 of the first embodiment, and the first connection of the embodiment is different. The structure of the member is also different from that of the first connector 50 of the first embodiment. More specifically, the first component of the present embodiment omits the first end portion 21 of the first component 20 of the first embodiment and the connecting wall while retaining the second end portion 22', the first connecting member of the embodiment The second end portion 52 of the first connector 50 of the first embodiment is omitted while the first end portion 51' is retained. The bottom end of the first end portion 51' of the first connector of the present embodiment is directly disposed at the top of the second end portion 22' of the first assembly.

Referring to Figure 12, there is shown a cross-sectional view of a sixth embodiment of the present invention. The sixth embodiment of the present invention is substantially the same as the foregoing second embodiment, except that the structure of the first component of the present embodiment is different from the structure of the first component 20 of the second embodiment, and the first connection of the embodiment is different. The structure of the member is also different from that of the first connector 50 of the second embodiment. More specifically, this is The first component of the embodiment omits the first end portion 21 of the first component 20 of the second embodiment and the connecting wall while retaining the second end portion 22". The first connector of the present embodiment omits the second embodiment The second end 52 of the first connector 50 retains the first end 51". The bottom end of the first end portion 51" of the first connector of the present embodiment is directly disposed at the top of the second end portion 22" of the first component.

The foolproof closed type connector 10 of the present invention is such that the first ratchet teeth 512 of the first connecting member are selectively engaged with the second ratchet teeth 611 of the second connecting member, so that the first The connecting member 50 can only drive the second connecting member 60 to rotate unidirectionally in the first direction, and cannot drive the second connecting member 60 to rotate in the opposite direction to the first direction indicated by the arrow A. Thereby, after the second connecting member 60 is screwed and fixed to the second component 30, it cannot be loosened from the second component 30, thereby achieving the effect of preventing liquid leakage. In particular, when the liquid in the syringe, the drip bottle, the medicine bag or the infusion machine is a highly toxic agent, the foolproof closed type connector 10 of the present invention can protect the caregiver, family members and other patients from leakage. The harm of toxic agents, and can ensure that the drug completely enters the patient's body, and can also be thrown into the medical waste bag along with disposable containers such as syringes, drip bottles or medicine bags.

Secondly, after the second end portion 62 of the second connecting member is screwed and fixed to the first end portion 31 of the second component, the user can strongly rotate the first connecting member in a first direction indicated by the arrow A. 50, or the second connecting member 60 is strongly rotated in the opposite direction to the first direction indicated by the arrow A, so that the second ratchet teeth 611 are broken by the first ratchet teeth 512, and the second connecting member The large diameter section 63 is interposed between the first and second end portions 61 and 62, and the slide rail on the inner side wall of the recess 511 is disposed in the sliding groove 631 of the large diameter section of the second connecting member. Thereby, the second connecting member 60 can be freely rotated 360 degrees in the direction indicated by the arrow A and the arrow B by the sliding rail and the sliding slot 631 relative to the first connecting member 50, so as to be the second of the infusion tube. The assembly 30 can be twisted into a straight line to solve the twisted tube The problem is that it is very easy to operate, and the second connector 60 can still remain screwed to the second component 30, completely unaffected, and the second connector 60 does not move axially relative to the first connector 50 at all. There are no doubts about looseness.

Moreover, the number of the second ratchet teeth 611 is smaller than the number of the first ratchet teeth 512 as compared to the embodiment in which the number of the second ratchet teeth 611 is equal to the number of the first ratchet teeth 512. The second ratchets 611 in the embodiment are relatively easily broken.

In addition, the slide rail is composed of a plurality of blocks 5151 spaced apart from each other, which not only saves the production materials, but also maintains the effect of the slide rails, and is quite novel and practical.

Also, each block 5151 is located above every two first ratchet groups 513. Thereby, when the first end portion 61 of the second connecting member is mounted into the recess 511, the second ratchet teeth 611 can be smoothly installed through the space between each two blocks 5151 without hindrance. To the location.

It is worth mentioning that, in the embodiment having the washer 70, the washer 70 is disposed on the outer side of the small diameter section 5161 of the plug block and the ring protrusion 71 is located on the inner side wall of the plug slot 612. in. Thereby, the gasket 70 can provide an excellent effect of preventing liquid leakage. As for the embodiment in which the gasket 70 is omitted, there is actually a certain effect of preventing liquid leakage.

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the present invention in any way, so that any modifications or alterations to the present invention made in the same spirit of creation are made. All should still be included in the scope of the intention of the present invention.

10‧‧‧Danger-proof closed joint

20‧‧‧First component

21‧‧‧ first end

22‧‧‧ second end

23‧‧‧ Room

50‧‧‧First connector

51‧‧‧First end

511‧‧‧ Groove

512‧‧‧First ratchet

513‧‧‧First ratchet group

514‧‧‧First cogging

5151‧‧‧Block

516‧‧‧ Socket block

5161‧‧‧ Large diameter section

5162‧‧‧Small path

52‧‧‧second end

53‧‧‧First through hole

60‧‧‧Second connection

611‧‧‧second ratchet

62‧‧‧second end

621‧‧‧ external thread

622‧‧‧Second through hole

63‧‧‧ Large diameter section

631‧‧ ‧ chute

70‧‧‧ Washer

71‧‧‧ ring convex

Claims (8)

A foolproof closed type joint for connecting between a first component and a second component, the foolproof closed type connector comprising: a first connecting component comprising a first end and a second end The first end portion of the first connecting member forms a groove and a plurality of first ratchet teeth, the first ratchet teeth are disposed on a wall surface of the groove, and the second end portion is used for connecting the first component; And a second connecting member, including a first end portion, a second end portion and a large diameter portion, the first end portion of the second connecting member forming a plurality of second ratchet teeth, the first of the second connecting members An end portion is disposed in the recess, the first ratchets are selectively engaged with the second ratchet teeth, and the first connecting member drives the second connecting member to rotate in a single direction in a first direction, so that The second end of the second connecting member is screwed and fixed to the second component, and the large diameter segment is disposed between the first and second ends of the second connecting member and has an outer diameter larger than that of the second connecting member. The outer diameter of the first and second end portions, the inner side wall of the groove and the outer side of the large diameter section of the second connecting member are provided with a sliding rail, and the other a sliding slot is disposed in the sliding slot, wherein the second end of the second connecting member is screwed and fixed to the second component, and the first connecting member rotates in the first direction or Rotating the second connecting member in a direction opposite to the first direction, so that the second ratchets are broken by the first ratchets, so that the second connecting member is opposite to the first connecting member by the sliding rail and the sliding slot The connector rotates 360 degrees. The foolproof closed type joint according to claim 1, wherein the inner side wall of the groove is provided with the sliding rail, and the sliding rail is located above the first ratchet, and the outer ring of the large diameter section Set this chute. The foolproof closed type joint according to claim 2, wherein the slide rail is composed of a plurality of blocks spaced apart. The foolproof closed type joint according to claim 3, wherein the first ratchet is divided into a plurality of first ratchet groups including a plurality of first ratchets, each block being located in every two Above the ratchet group. The foolproof closed type joint according to claim 1, wherein the number of the second ratchets is smaller than the number of the first ratchets. The foolproof closed type joint according to the first aspect of the invention, wherein the first ratchet ring is disposed on an inner side wall of the groove, and the second ratchet ring is disposed on the second connecting piece The outside of one end. The foolproof closed type joint according to the first aspect of the invention, wherein the first ratchet ring is disposed on an inner bottom surface of the groove, and the second ratchet ring is disposed on the second connecting piece The bottom of one end. The foolproof closed type joint according to claim 1, further comprising a gasket, wherein the inner bottom surface of the groove protrudes upwardly from the plug block, and the plug block comprises a large diameter section and a small diameter section. The large diameter section is connected to the inner bottom surface of the recess, the small diameter section is disposed on a side of the large diameter section away from the inner bottom surface of the recess, and the bottom end of the first end of the second connecting component is axially a recessed groove is formed in the recessed portion, and a ring recess is formed in the inner side wall of the plugging slot, and the plugging block is disposed on the plugging In the slot, the washer is disposed on the outer side of the small diameter section of the plug block and protrudes from the outer peripheral surface thereof by a ring protrusion located in the annular recess of the inner side wall of the plug slot.