TWM590974U - Medical injection connector - Google Patents

Abstract

A medical injection connector is used to solve the problem that the conventional injection connector is easy to cause leakage or deterioration of the medical liquid due to the silicone elastomer crack. It includes: a sleeve with a partition inside, one end of a pipe connected to the partition, and an infusion port formed at the other end; a moving part is located inside the sleeve and is axially displaceable by a first tube Penetrating into the catheter; a connecting base, which is combined with the sleeve and the inside of the connecting base communicates with the inside of the moving part, the moving part can be axially displaced to connect the connecting base in a liquid-tight manner; and an elastic return part, two ends Respectively abutting the moving part and the connecting seat, so that the elastic restoring part can be compressed when the moving part is pressed, and when the moving part is not pressed, the elastic restoring part can push the moving part to reset and close the catheter Infusion port.

Description

Medical injection connector

This creation is about a medical infusion set, especially a medical injection connector.

At present, in the process of administering continuous intravenous injection (commonly known as "drops" or "infusion", etc.) to patients in medical institutions, additional medicines are often required, especially some courses that require repeated administration, such as a total of 5cc The amount of medicine can only be added 0.5~1cc each time, and it needs to be added every 2~3 hours. There will be a demand for adding medicine multiple times a day. In order to improve the operation convenience of dosing, and to ensure that the drug solution does not deteriorate with contact with air during placement, there is a conventional injection connector that can be combined with the front end of the syringe to connect the medicine with the conventional injection connector. A female connector combined with the tank, and then operate the syringe to take the medicine from the medicine tank, and keep the liquid medicine sealed in the conventional injection connector; when the medicine needs to be added, then the conventional injection connector Connect another female connector communicating with the drip tube to operate the syringe to input the medical liquid into the drip tube. An embodiment of the injection connector similar to the conventional one has been disclosed in the Patent Case No. I446942 published by the Republic of China.

In detail, the aforementioned conventional injection connector has a first seat body for connecting a syringe, a second seat body for connecting a female connector, and a silicone elastomer combining the first seat body and the second seat body; When the second base is connected to the female connector, the first base and the second base can be relatively displaced to stretch the silicone elastomer, and when the second base is separated from the female connector, the The elastic reset force of the silicone elastomer relatively pulls the first seat body and the second seat body back to the initial position.

Therefore, the use of the conventional injection connector is to stretch its silicone elastomer. Especially in the course of treatment requiring repeated administration, the silicone elastomer will be prone to elastic fatigue and cracking due to repeated stretching, which cannot cause the first seat body and the second seat body to be accurately reset. Not only will it cause leakage or deterioration of the drug solution, but it may also directly affect the treatment effect.

In view of this, the conventional injection connector still needs to be improved.

In order to solve the above problems, the purpose of this creation is to provide a medical injection connector, which can be compressed when the female connector is connected to the female connector, and can be recovered by the elastic reset member when separated from the female connector. The type before compression is accurately reset by interlocking related components.

The next objective of this creation is to provide a medical injection connector that can evenly apply force to its elastic return member to ensure that the elastic return member can be accurately deformed and reset.

Another purpose of this creation is to provide a medical injection connector that can improve the efficiency of infusion or pumping.

Another purpose of this creation is to provide a medical injection connector, which can avoid the residual of liquid medicine or affect the treatment effect.

The directionality or its approximate terms in the full text of this creation, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "Side", etc., mainly refer to the directions of the attached drawings, and each directivity or its approximate terms are only used to help explain and understand the embodiments of the creation, not to limit the creation.

The use of the quantifier "a" or "one" in the elements and components described in the full text of this creation is only for convenience and provides the usual meaning of the scope of this creation; in this creation, it should be interpreted as including one or at least one, and single The concept of also includes the plural case unless it clearly means something else.

Similar terms such as "combination", "combination" or "assembly" mentioned in the full text of this creation, It mainly includes the types that can be separated without damaging the components after connection, or the components can not be separated after the connection. Those who have ordinary knowledge in the art can choose according to the material or assembly requirements of the components to be connected.

The medical injection connector of the present invention includes: a sleeve with a partition inside, a end of a catheter connected to the partition, and an infusion port formed at the other end; a moving part is located inside the sleeve and consists of a The first tube penetrates into the catheter displaceably in an axial direction; a connecting seat is combined with the sleeve and the inside of the connecting seat communicates with the inside of the moving part, and the moving part can connect the connecting seat in a liquid-tight manner axially displaceable; And an elastic restoring member, the two ends abut the moving member and the connecting seat respectively, so that the elastic restoring member can be compressed when the moving member is pressed, and the elastic restoring member can push against the moving member when the moving member is not pressed The moving part resets and closes the infusion port of the catheter.

Accordingly, the medical injection connector of the present invention not only has a simple structure and is easy to assemble, but also can be compressed by the moving member instead of stretching the elastic reset member when the female connector is connected, and When it is separated from the female connector, the elastic reset member is restored to the state before being compressed to push the mobile member to accurately reset; in this way, the elastic reset member can be effectively prevented from elastic fatigue and cracking quickly, so Even if the medical injection connector is used under the operation condition of repeated dosing, it will not be incompletely reset due to damage or deterioration of the elastic reset member, and will cause leakage or deterioration of the chemical solution. It has the advantages of reducing manufacturing costs and improving assembly Multiple effects such as efficiency, prolonged service life, and avoid treatment effects due to liquid leakage.

Wherein, the moving part may have two ends of a plate body respectively connected to the first tube and a second tube, and the first tube communicates with the second tube, and the connecting base may have two ends of a fixing plate An extension tube and a syringe connection tube are respectively connected, and the extension tube communicates with the syringe connection tube, and the second tube is connected to the extension tube in a liquid-tight manner with axial displacement. In this way, the structure of the moving part and the connecting base is simple and easy to manufacture and assemble, and has the effects of reducing manufacturing costs and improving assembly efficiency.

Wherein, the elastic return member can surround the outer circumference of the second tube and the extension tube, The two ends of the elastic reset member can respectively abut the disc body and the holding plate. In this way, the structure of the elastic reset member is simple and easy to manufacture and assemble, and the disc body and the retaining plate can evenly apply force to the entire axial end surface of the elastic reset member to accurately control the elasticity of the elastic reset member The deformation condition enables the elastic reset member to be deformed and reset as expected, and has the effects of reducing manufacturing costs, improving assembly efficiency, and improving operation accuracy to prevent leakage or infusion.

Wherein, the elastic reset member can push the disc body to abut against the partition plate and close the infusion port of the catheter by the first tube. In this way, the elastic reset member can be slightly pre-pressed to accurately reset after elastic deformation, and has the effect of improving the effect of preventing liquid leakage.

Wherein, the inner wall of the catheter may form a constricted section at the end away from the partition, and the constricted section extends to the infusion port, and the end of the first tube away from the disc body is closed and may form a reduced diameter Section, the reduced-diameter section of the first tube can be detachably plugged into the narrowed section of the catheter, the first tube can have at least one through hole, when the reduced-diameter section is separated from the reduced section, the inside of the first tube The infusion port can be communicated by the side through hole. In this way, it has the effect of improving the smoothness of infusion.

Wherein, the side through hole may be at least partially located in the reduced diameter section. In this way, the side through hole can expand the space for liquid circulation through the portion located in the reduced diameter section, and has the effects of improving the infusion or pumping efficiency.

Wherein, the first tube may be provided with a positioning groove to accommodate a sealing ring, the positioning groove and the sealing ring may be located between the side through hole and the disc body, and the sealing ring may contact the inner wall of the catheter . In this way, the liquid will not flow into the gap between the outer wall of the first tube and the inner wall of the catheter below the sealing ring, and has the effect of avoiding the residual of the medical liquid or affecting the treatment effect.

Wherein, the extension tube may be provided with a containing groove to accommodate a leakage prevention ring, the extension tube may penetrate into the second tube, and the leakage prevention ring may contact the inner wall of the second tube. In this way, it has the effect of avoiding the residual of liquid medicine or affecting the therapeutic effect.

Wherein, the sleeve may have two perforations penetrating the partition, the two perforations are preferably located On the opposite sides of the catheter, the moving member may have two limiting plates connected to the disc body, the two limiting plates are located on the outer periphery of the first tube, and the two limiting plates may pass through the two perforations and lie opposite the The periphery of the catheter. In this way, when the sleeve is connected to a female connector, the female connector can be pressed against the two limiting plates and the reduced diameter section of the first tube at the same time, so that the moving member can be displaced toward the connection seat more smoothly. Improve the operation accuracy and other functions.

Wherein, the sleeve may have a body and an end cap, the partition may be located inside the body, the conduit may be located at the first end of the body, the inner wall of the body may form a shoulder at the second end of the body The end cover may have a fixing portion facing the partition plate, and the fixing plate of the connecting seat may be limited between the shoulder portion and the fixing portion. In this way, it has the effect of improving the stability of the combination.

Wherein, the end cap may have a slot-shaped through hole, and the syringe connecting tube may extend through the slot. In this way, it has the effect of improving the convenience of operation when the syringe is connected.

Wherein, the elastic reset member can be provided with several longitudinally spaced ring grooves on its inner wall and outer wall, respectively. In this way, the elastic reset member can have suitable elastic deformation and elastic reset capabilities, and has the effects of improving operation accuracy and the like.

1‧‧‧Sleeve

11‧‧‧Body

11a‧‧‧The first end

11b‧‧‧Second end

111‧‧‧Partition

112‧‧‧ screw joint

113‧‧‧Shoulder

114‧‧‧Catheter

115‧‧‧Shrink section

116‧‧‧Perforation

12‧‧‧End cover

121‧‧‧Slot

122‧‧‧Consolidation Department

2‧‧‧Mobile

21‧‧‧ First tube

211‧‧‧Reduced diameter section

212‧‧‧Side through hole

213‧‧‧Locating slot

214‧‧‧Seal ring

22‧‧‧Disc

23‧‧‧Second tube

24‧‧‧Limit plate

3‧‧‧Connector

31‧‧‧Retaining plate

32‧‧‧Extension tube

321‧‧‧Room

322‧‧‧Leakproof ring

33‧‧‧syringe connecting tube

331‧‧‧Thread

4‧‧‧Elastic reset

41‧‧‧ring groove

K‧‧‧infusion port

[Figure 1] An exploded perspective view of a preferred embodiment of the present creation.

[Figure 2] A combined side sectional view of a preferred embodiment of the present creation.

[Figure 3] A cross-sectional view taken along line A-A of Figure 2.

[Figure 4] This is a diagram of the operation of a preferred embodiment of this creation.

In order to make the above and other purposes, features and advantages of this creation more obvious and understandable, the following Wente cites the preferred embodiment of this creation, and in conjunction with the attached drawings, detailed descriptions are as follows:

Please refer to FIG. 1 and FIG. 2, which is a preferred embodiment of the medical injection connector of the present invention, which includes a sleeve 1, a moving member 2, a connecting seat 3 and an elastic return member 4, the The moving part 2 is connected to the connecting base 3, the connecting base 3 is combined with the sleeve 1, and the moving part 2 and the elastic return part 4 are located in the sleeve 1.

The sleeve 1 has a body 11 with a first end 11a and a second end 11b opposite; in this embodiment, both the first end 11a and the second end 11b of the body 11 can be open shape. The body 11 has a partition 111 inside, and a screw portion 112 can be provided on the inner wall of the body 11 and between the partition 111 and the first end 11a; the inner wall of the body 11 can also be located on the The second end 11b forms a shoulder 113. A duct 114 is located at the first end 11a of the body 11, one end of the duct 114 is connected to the partition 111, and the other end forms an infusion port K, and the duct 114 of this embodiment may protrude beyond the first end 11a, The infusion port K is located outside the first end 11a; the inner wall of the conduit 114 can form a constriction section 115 at the end away from the partition 111, and the constriction section 115 extends to the infusion port K. The body 11 may further have two perforations 116 penetrating the partition 111. The two perforations 116 are preferably located on opposite sides of the duct 114. In addition, the sleeve 1 may have an end cover 12 coupled to the second end 11 b of the body 11, the end cover 12 may have a slot 121 penetrating therethrough, and a retaining portion 122 facing the partition 111.

The moving member 2 is located inside the body 11 of the sleeve 1 and penetrates into the catheter 114 by a first tube 21 so as to be axially displaceable. In this embodiment, the moving member 2 has a plate body 22, the two ends of the plate body 22 are respectively connected to the first tube 21 and a second tube 23, and the first tube 21 and the second tube 23 Connected. The moving member 2 may further have two limiting plates 24 connected to the disc body 22. The two limiting plates 24 are located on the outer periphery of the first tube 21. The moving member 2 can be inserted from the second end 11b of the body 11, and the disc body 22 abuts the partition plate 111, the first tube 21 is aligned and penetrated into the conduit 114, and the two limiting plates 24 Then, the two perforations 116 can be passed through and located on the outer periphery of the catheter 114.

More specifically, the end of the first tube 21 away from the disc body 22 is closed and a reduced diameter section 211 can be formed on the outer wall, so that when the disc body 22 abuts the partition 111, the reduced diameter section 211 It is plugged into the constricted section 115 of the catheter 114; wherein, the reduced-diameter section 211 and the constricted section 115 may be slightly tapered to improve the tightness. The first tube 21 has at least one side through hole 212 that penetrates the inner and outer walls of the first tube 21 from the circumferential surface of the first tube 21. The outer diameter of the portion of the first tube 21 other than the reduced-diameter section 211 may be slightly smaller than the inner diameter of the portion of the catheter 114 other than the narrowed section 115, so that the first tube 21 is directed to the second of the body 11 When the end 11b is pressed, the first tube 21 can be smoothly displaced axially with respect to the catheter 114, so that the reduced-diameter section 211 can be separated from the constricted section 115, and the inside of the first tube 21 can be formed by the side through-hole 212 communicates with the infusion port K; preferably, the side through hole 212 is at least partially located in the reduced diameter section 211 (please refer to FIG. 3 for cooperation). The first tube 21 can also be provided with a positioning groove 213 on the outer wall to accommodate a sealing ring 214, the positioning groove 213 and the sealing ring 214 are located between the side through hole 212 and the disc body 22, and the sealing ring 214 contacts the inner wall of the duct 114 so that liquid does not flow into the gap between the outer wall of the first tube 21 and the inner wall of the duct 114 below the seal ring 214 (in the direction shown in FIG. 2 ).

The connecting base 3 is combined with the sleeve 1 and is located at the second end 11b of the body 11. The inside of the connecting base 3 communicates with the inside of the moving part 2, and the moving part 2 can be axially displaced and liquid-tightly connected to the connecting base 3. In this embodiment, the connecting base 3 has a retaining plate 31, which can be limited between the shoulder 113 of the body 11 and the retaining portion 122 of the end cover 12. An extension tube 32 and a syringe connection tube 33 are respectively connected to the two ends of the retaining plate 31. The extension tube 32 is fluid-tightly connected to the second tube 23, and the second tube 23 can be axially displaced relative to the extension tube 32 In this embodiment, the outer diameter of the extension tube 32 can be selected to be slightly smaller than the inner diameter of the second tube 23, and a receiving groove 321 is provided on the outer wall of the extension tube 32 to accommodate a leak-proof ring 322, The extension tube 32 can penetrate into the second tube 23 and smoothly displace axially, and the leakage prevention ring 322 contacts the inner wall of the second tube 23 to form a liquid-tight connection. The syringe connecting tube 33 communicates with the extension tube 32, and the syringe is connected The connecting tube 33 can penetrate through the slot 121 of the end cap 12, and the outer wall of the syringe connecting tube 33 can be provided with a threaded portion 331 for connecting the syringe (not shown).

The two ends of the elastic restoring member 4 are respectively used to elastically abut the moving member 2 and the connecting base 3. In this embodiment, the elastic return member 4 is generally a hollow tube to surround the outer circumferences of the second tube 23 and the extension tube 32. The two ends of the elastic return member 4 can abut the disc body 22 and The resisting plate 31 enables the disc body 22 and the resisting plate 31 to uniformly apply force to the entire axial end surface of the elastic reset member 4 to accurately control the elastic deformation state of the elastic reset member 4 so that the The elastic reset member 4 can be deformed and reset as expected. The material of the elastic restoring element 4 can be, for example, silicone rubber or rubber. The elastic reset member 4 of this embodiment may be provided with a plurality of longitudinally spaced ring grooves 41, a spiral groove or a wide groove on its inner wall and outer wall, respectively, so that the elastic reset member 4 has suitable elastic deformation and elastic reset capabilities .

Referring to FIG. 3, according to the foregoing structure, the medical injection connector of the present invention can be connected to a syringe by the syringe connecting tube 33, so that the interior of the syringe is connected to the syringe connecting tube 33, the extension tube 32, the The inside of the second tube 23 and the first tube 21 are in communication. In the initial state, the elastic return member 4 can push the disk 22 against the partition 111, and the reduced diameter section 211 of the first tube 21 can be plugged into the narrowed section 115 of the catheter 114.

Referring to FIG. 4, when a female connector is connected to the sleeve 1, the female connector can press against the two limiting plates 24 and the reduced diameter section 211 of the first tube 21 at the same time to make the movement The member 2 can be smoothly displaced toward the connection base 3. In this way, the disc body 22 of the moving member 2 can compress the elastic return member 4, and the diameter-reducing section 211 can be separated from the constriction section 115, so that the inside of the first tube 21 can communicate with the constriction through the side through hole 212 Section 115, so that the syringe can infuse or withdraw liquid to the female connector through the medical injection connector; wherein, in the embodiment where the side through hole 212 has a portion located in the reduced diameter section 211, the side through hole 212 The space for liquid circulation can be enlarged by the portion located at the reduced diameter section 211 to improve the efficiency of infusion or pumping.

After the female connector is separated from the sleeve 1, the force against the two limiting plates 24 and the first tube 21 has disappeared, so the moving member 2 will no longer press against the elastic reset member 4, and By the elastic resetting ability of the elastic resetting member 4, the elastic resetting member 4 can push the moving member 2 to move toward the first end 11a of the body 11 until the disc body 22 abuts the partition 111 again, and The moving member 2 is returned to the initial position shown in FIG. 3, and the reduced diameter section 211 of the first tube 21 is again plugged into the narrowed section 115 of the catheter 114 to close the infusion port K and the catheter 114. Prevent leakage.

In summary, the medical injection connector of this creation not only has a simple structure and is easy to assemble, but also can be compressed by the moving member instead of stretching the elastic reset member when the female connector is connected , And when it is separated from the female connector, the elastic reset member is restored to the pre-compressed state to push the mobile member to accurately reset; in this way, the elastic reset member can quickly avoid elastic fatigue and cracking Therefore, even if the medical injection connector is used under the operating conditions of repeated dosing, it will not be incompletely reset due to damage or deterioration of the elastic reset member and cause leakage or deterioration of the chemical solution. Improve the assembly efficiency, extend the service life, and avoid multiple effects such as leakage and affecting the treatment effect.

Although this creation has been disclosed using the above preferred embodiments, it is not intended to limit this creation. Anyone who is familiar with this art will still make changes and modifications to the above embodiments without departing from the spirit and scope of this creation. The scope of technology protected by the creation, so the scope of protection of this creation shall be deemed as defined by the scope of the attached patent application.

1‧‧‧Sleeve

11‧‧‧Body

11a‧‧‧The first end

11b‧‧‧Second end

111‧‧‧Partition

112‧‧‧ screw joint

113‧‧‧Shoulder

114‧‧‧Catheter

115‧‧‧Shrink section

116‧‧‧Perforation

12‧‧‧End cover

121‧‧‧Slot

122‧‧‧Consolidation Department

2‧‧‧Mobile

21‧‧‧ First tube

211‧‧‧Reduced diameter section

212‧‧‧Side through hole

213‧‧‧Locating slot

214‧‧‧Seal ring

22‧‧‧Disc

23‧‧‧Second tube

24‧‧‧Limit plate

3‧‧‧Connector

31‧‧‧Retaining plate

32‧‧‧Extension tube

321‧‧‧Room

322‧‧‧Leakproof ring

33‧‧‧syringe connecting tube

4‧‧‧Elastic reset

41‧‧‧ring groove

K‧‧‧infusion port

Claims (12)

A medical injection connector includes: a sleeve with a partition inside, one end of a catheter connected to the partition, and an infusion port formed at the other end; a moving part is located inside the sleeve and is composed of a first The tube can penetrate the catheter with axial displacement; a connecting seat, combined with the sleeve and the inside of the connecting seat communicates with the inside of the moving part, the moving part can connect the connecting seat in a liquid-tight manner with axial displacement; and a Two ends of the elastic restoring member respectively abut the moving member and the connecting seat, so that the elastic restoring member can be compressed when the moving member is pressed, and the moving member can push the moving member when the moving member is not pressed Reset and close the infusion port of the catheter. The medical injection connector as described in item 1 of the patent application scope, wherein the moving member has two ends of a disc body respectively connected to the first tube and a second tube, and the first tube and the second tube Connected, the connecting seat has two ends of a fixing plate respectively connected with an extension tube and a syringe connection tube, and the extension tube communicates with the syringe connection tube, and the second tube can be axially displaced to the liquid-tight connection Extension tube. The medical injection connector as described in item 2 of the patent application scope, wherein the elastic return member surrounds the outer circumference of the second tube and the extension tube, and the two ends of the elastic return member abut the disc body and The holding plate. The medical injection connector as described in item 3 of the patent application range, wherein the elastic return member pushes the disc body against the partition plate and closes the infusion port of the catheter by the first tube. The medical injection connector as described in item 2 of the patent application scope, wherein the inner wall of the catheter forms a constricted section at the end away from the partition, and the constricted section extends to the infusion port, the first The end of the tube away from the disc body is closed and forms a diameter-reduced section. The diameter-reduced section of the first tube can be detachably plugged into the necked-down section of the catheter. The first tube has at least one side through hole. Paragraph out of the contraction In the mouth section, the side through hole communicates with the infusion port inside the first tube. The medical injection connector as described in item 5 of the patent application scope, wherein the side through hole is at least partially located in the reduced diameter section. The medical injection connector as described in item 5 of the patent application, wherein the first tube is provided with a positioning groove to accommodate a sealing ring, and the positioning groove and the sealing ring are located at the side through hole and the disc body Between, and the sealing ring contacts the inner wall of the catheter. The medical injection connector as described in item 2 of the patent application scope, wherein the extension tube is provided with a receiving groove to receive a leak-proof ring, the extension tube penetrates into the second tube, and the leak-proof ring contacts the The inner wall of the second tube. The medical injection connector as described in item 2 of the patent application scope, wherein the sleeve has two perforations penetrating the partition plate, the two perforations are located on opposite sides of the catheter, and the moving member has two limit plate connections In the disc body, the two limiting plates are located on the outer periphery of the first tube, and the two limiting plates pass through the two perforations and are located on the outer periphery of the catheter. The medical injection connector as described in item 2 of the patent application scope, wherein the sleeve has a body and an end cap, the baffle is located inside the body, the catheter is located at the first end of the body, and the body The inner wall forms a shoulder at the second end of the body, the end cover has a retaining portion facing the partition, and the retaining plate of the connecting seat is limited between the shoulder and the retaining portion. The medical injection connector as described in item 10 of the patent application range, wherein the end cap has a slot-shaped through hole, and the syringe connecting tube extends through the slot. The medical injection connector according to any one of items 1 to 11 of the patent application range, wherein the elastic return member is provided with a plurality of longitudinally spaced ring grooves on its inner wall and outer wall, respectively.

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