CN111714726A - Medical leakage-proof joint - Google Patents
Medical leakage-proof joint Download PDFInfo
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- CN111714726A CN111714726A CN201910223880.1A CN201910223880A CN111714726A CN 111714726 A CN111714726 A CN 111714726A CN 201910223880 A CN201910223880 A CN 201910223880A CN 111714726 A CN111714726 A CN 111714726A
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- Prior art keywords
- shell
- valve core
- movable frame
- elastic
- flow guide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
- A61M2005/3107—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle for needles
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A medical leakage-proof joint comprises a shell, a flow guide channel, an elastic sealing piece, a valve core, a movable frame and an elastic reset element. The shell is provided with an inner cavity and a first interface; the flow guide channel penetrates through the inner cavity of the shell and keeps fluid seal with the inner cavity; one end of the flow guide channel is provided with a second interface; the elastic sealing element closes the first interface and enables the first interface to be communicated with the other end of the flow guide channel when the elastic sealing element is compressed and deformed; the elastic reset element is abutted against one end of the movable frame; the other end of the movable frame can be driven by external force so that the movable frame overcomes the elasticity of the elastic reset element and moves towards the inner cavity of the shell; the movable frame and the valve core are respectively provided with a magnetic body and a magnetizer, and the magnetic attraction between the magnetic body and the magnetizer can enable the valve core and the movable frame to move together; the valve core is switched between a closed state and an open state through movement, and fluid communication between the second interface and the flow guide channel is blocked in the closed state. The invention can minimize the phenomena of liquid leakage and dripping when being separated from the medical equipment.
Description
Technical Field
The invention relates to a medical connecting joint. In particular to a medical connecting joint which is clinically matched with an infusion apparatus, an injector, a needleless joint and the like.
Background
At present, a medical connector is often used for connecting an infusion apparatus, an injector and the like in the intravenous infusion treatment. When the traditional medical connector is connected or separated with an infusion apparatus, an injector and the like, the phenomena of liquid leakage and dripping are easy to occur. In the case of some medical solutions (such as cancer chemotherapy solutions) which are harmful to human health, once leakage or dripping occurs, the risk of contact with human skin is greatly increased, and the medical personnel or patients are harmed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a medical leakage-proof joint which can minimize or eliminate the phenomena of liquid leakage and dripping when being separated from other medical equipment.
The technical scheme adopted by the invention is as follows:
the invention provides a medical leakage-proof joint which comprises a shell, a flow guide channel, an elastic sealing element, a valve core, a movable frame and an elastic reset element, wherein the shell is provided with a guide channel; the shell is provided with an inner cavity and a first interface; the flow guide channel penetrates through the inner cavity of the shell and is in fluid seal with the inner cavity; one end of the flow guide channel is provided with a second interface; the elastic sealing piece closes the first interface in a fluid-tight mode, is compressed and deformed when being subjected to external force, and can enable the first interface to be communicated with the other end of the flow guide channel when being compressed and deformed; the elastic reset element is arranged in the inner cavity of the shell and is abutted against one end of the movable frame; the other end of the movable frame can be driven by external force, so that the movable frame overcomes the elasticity of the elastic reset element to move towards the inner cavity of the shell, and the movable frame is reset under the action of the elasticity of the elastic reset element after the external force is eliminated; the movable frame is provided with a magnetic body; the valve core is provided with a magnetizer; the magnetic attraction between the magnetizer and the magnetic body can make the valve core and the movable frame move together; the valve core is switched between a closed state and an open state through movement, the valve core blocks fluid communication between the second interface and the flow guide channel when in the closed state, and the valve core enables the second interface and the flow guide channel to form fluid communication when in the open state.
The invention also provides a medical leakage-proof joint which comprises a shell, a male luer connector tube, an elastic sealing element, a puncture nail, a valve core, a movable frame and an elastic reset element; the shell is provided with an inner cavity, a female luer connector tube and an annular joint which is coaxially arranged with the male luer connector tube; the female luer connector tube is arranged at the first end of the shell, the annular joint is arranged at the second end of the shell opposite to the first end of the shell and partially surrounds the male luer connector tube, and one end of the male luer connector tube extends out of the central through hole of the annular joint; the central through hole of the annular joint is communicated with the inner cavity of the shell, and the inner peripheral surface of the annular joint is provided with internal threads; an elastomeric seal closes the female luer mouthpiece in a fluid-tight manner and is compressively deformed when subjected to an external force; the puncture nail is fixedly connected with the shell, and the top of the puncture nail is provided with a flow guide hole; the bottom of the puncture nail is connected with the other end of the male luer connector tube, the puncture nail and the male luer connector tube jointly limit a flow guide channel, and the flow guide channel penetrates through the inner cavity of the shell and keeps fluid seal with the inner cavity; the puncturing nail can puncture the elastic sealing piece in the compression deformation process of the elastic sealing piece and expose the diversion hole, so that the fluid in the diversion channel, which can flow to the outside through the diversion hole or the outside, can flow into the diversion channel through the diversion hole; the elastic reset element is arranged in the inner cavity of the shell, one end of the elastic reset element is fixed, and the other end of the elastic reset element is abutted against one end of the movable frame; the other end of the movable frame extends into the central through hole of the annular joint; the other end of the movable frame can be driven by external force, so that the movable frame overcomes the elasticity of the elastic reset element to move towards the inner cavity of the shell, and the movable frame is reset under the action of the elasticity of the elastic reset element after the external force is eliminated; the movable frame is provided with a magnetic body; the valve core is arranged in the male luer connector tube, and the inner wall of the male luer connector tube is provided with a sealing surface matched with the valve core; the valve core is provided with a magnetizer, and the valve core and the movable frame can move together through magnetic attraction between the magnetizer and the magnetic body; the valve core is switched between a closed state and an open state through movement, the valve core is in contact sealing with the sealing surface of the male luer connector tube when in the closed state, and the valve core is separated from the sealing surface of the male luer connector tube when in the open state.
The invention has at least the following advantages:
when the first interface and the second interface of the medical leakage-proof joint are separated from the external medical equipment, the elastic sealing element and the valve core can automatically recover to a closed state, so that the phenomena of leakage and dripping of liquid medicine from the first interface and the second interface can be minimized or eliminated, and the safety of medical staff is guaranteed.
Drawings
Fig. 1 is a schematic external view showing one embodiment of a medical leakproof joint according to the present invention.
Fig. 2 shows a schematic section a-a of fig. 1.
Fig. 3 shows an exploded view of one embodiment of a medical containment fitting in accordance with the present invention.
Fig. 4 shows a schematic section a-a of fig. 3.
Fig. 5 is a cross-sectional view schematically illustrating a medical leakage-proof connector according to an embodiment of the present invention when drawing fluid.
Fig. 6 is a cross-sectional view schematically illustrating the medical leakage-proof joint according to an embodiment of the present invention after completion of drawing.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Fig. 1 to 4 show the structure of a medical leak-proof joint according to an embodiment of the present invention. Referring to fig. 1 to 4, a medical leakage-proof joint 100 according to an embodiment of the present invention includes a housing 1, an elastic sealing member 2, a piercing pin 3, a valve core 4, a movable frame 5, an elastic restoring element 6, and a flow guide channel 7.
The housing 1 includes a top lid portion 1A and a housing body 1B. The top lid portion 1A includes a lid portion 11 and a first mouthpiece 13, and a bottom end of the first mouthpiece 13 is connected to a top portion of the lid portion 11. The piercing nail 3 penetrates the lid portion 11 and is connected to the lid portion 11. In the present embodiment, the piercing spike 3 is integrally formed with the lid portion 11. The top and bottom of the cap portion 11 are provided with a first annular groove 111 and a second annular groove 112, respectively, which surround the piercing spike 3. The bottom end of the elastic sealing member 2 is embedded in the first annular groove 111, and the top end of the elastic sealing member 2 extends into the first mouthpiece 13 and closes the first mouthpiece 131 (i.e., the inlet of the first mouthpiece 13 in this embodiment) in a fluid-tight manner. The top of the piercing spike 3 extends into a cavity 20 which opens onto the underside of the elastomeric seal and extends axially along the elastomeric seal. Wherein, elastic seal 2 includes sealing portion 2A and corrugated portion 2B, and sealing portion 2A's top surface 21 is a little higher than first mouth-piece 13's top surface 132 or flushes with first mouth-piece 13's top surface 132, and sealing portion 2A's top side and first mouth-piece 13's inner wall interference fit. The bottom of the sealing part 2A is a conical shoulder 23, the inner wall of the first mouthpiece 13 has a conical surface 133 matching with the conical shoulder 23, the conical shoulder 23 is in interference contact with the conical surface 133, and the conical surface sealing is realized by the conical shoulder 23 and the conical surface 133. The top end of the bellows portion 2B is connected to the bottom end of the seal portion 2A, and at least a part of the side surface of the bellows portion 2B is formed in a bellows shape. The elastic reset element 6 is in a bellows shape, and one end of the elastic reset element 6 is embedded in the second annular groove 112. Optionally, the elastic sealing element 2 and the elastic restoring element 6 are made of a non-metal elastic material, such as silicone, rubber, etc. In other embodiments, the elastic return element 6 is a metal spring.
The housing body 1B has a central through hole 10, and the cover 11 covers the top of the housing body 1B and is connected to the housing body 1B in a sealing manner, including but not limited to, bonding, ultrasonic welding, etc. The cover portion 11 and the housing body 1B together define an inner cavity 1C of the housing. The housing body 1B is provided with an annular joint 14 at the other end of the housing opposite to the end of the housing where the first mouthpiece 13 is located, and the top end of the annular joint 14 is connected to the bottom of the housing body 1B. The central through hole 140 of the annular joint 14 communicates with the inner cavity 1C of the housing, and the inner peripheral surface of the annular joint 14 is provided with internal threads 141. In the present embodiment, the annular joint 14 is integrally formed with the housing body 1B.
The guide channel 7 penetrates through the inner cavity 1C of the shell and is in fluid seal with the inner cavity 1C, and one end of the guide channel 7 is provided with a second interface 72.
In this embodiment, the medical containment fitting 100 includes a second mouthpiece 8. The annular joint 14 partially surrounds the second interface tube 8, the annular joint 14 is arranged coaxially with the second interface tube 8, and one end of the second interface tube 8 extends out of a central through hole 140 of the annular joint; the bottom of the puncture pin 3 is connected with the other end of the second mouthpiece 8 in a sealing way, the puncture pin 3 and the second mouthpiece 8 jointly define the flow guide channel 7, and the inlet of the second mouthpiece 8 forms the second interface 72. The puncture nail 3 is provided with a diversion hole 31; the guide channel 7 extends between the guide hole 31 and the second port 72.
In the present embodiment, the bottom surface of the piercing pin 3 is provided with a cavity 30 extending in the axial direction of the piercing pin. The diversion hole 31 is arranged on the side surface of the puncture nail 3 and penetrates through the cavity 30 of the puncture nail 3. The upper part of the piercing spike 3 is tapered. The bottom of the piercing spike 3 is inserted into the second mouthpiece 8 and the two are adhesively connected to effect a seal.
Further, the side surface of the first mouthpiece 13 is provided with external threads 135; the first mouthpiece 13 is a female luer mouthpiece and the second mouthpiece 8 is a male luer mouthpiece.
The elastic sealing member 2 is compressed and deformed when an external force is applied thereto, and the first port 131 can communicate with the other end of the flow guide passage 7 when the elastic sealing member 2 is compressed and deformed.
In the present embodiment, the piercing pin 3 can pierce the elastic sealing member 2 and expose the diversion hole 31 during the compression deformation of the elastic sealing member 2, so that the fluid in the diversion channel 7 can flow to the outside through the diversion hole 31 or the fluid in the outside can flow into the diversion channel 7 through the diversion hole 31. The diversion hole 31 may be partially exposed outside the elastic sealing member 2 or may be entirely exposed outside the elastic sealing member 2. The number of the baffle holes 31 may be one or more. In other embodiments, the piercing pin 3 may not be provided, but the second mouthpiece 8 and the elastic sealing member 2 may define the flow guiding channel 7, and the top surface of the elastic sealing member 2 may be provided with a slit, which is located above the cavity 20. When the elastic sealing element 2 is pushed by an external medical instrument to be compressed and deformed, the upper surface of the elastic sealing element 2 is sunken, the cutting seam is opened, the cavity 20 is opened, and the communication between the first interface 131 and the other end of the flow guide channel 7 is realized. When the external medical instrument is removed and the elastic sealing element 2 is restored, the slit is automatically closed, and the elastic sealing element 2 closes the first interface 131 again.
The elastic reset element 6 is arranged in the inner cavity 1C of the housing 1, one end of the elastic reset element 6 is embedded in the second annular groove 112 so as to be fixed, and the other end of the elastic reset element abuts against one end of the movable frame 5. The other end of the movable frame 5 can be driven by external force, so that the movable frame 5 overcomes the elastic force of the elastic reset element 6 to move towards the inner cavity 1C of the shell, and the movable frame is reset under the elastic force of the elastic reset element 6 after the external force is eliminated. The moving frame 5 is provided with a magnetic body 51.
The valve element 4 is provided with a magnetizer 42, and the valve element 4 and the moving frame 5 can be moved together by the magnetic attraction between the magnetizer 42 and the magnetic body 51. The magnetic body 51 may be made of neodymium iron boron, and the magnetizer may be made of iron, steel, or the like. The valve element 4 is switched between a closed state and an open state by the movement, the valve element 4 blocks the fluid communication between the second port 72 and the guide passage 7 when in the closed state, and the valve element 4 brings the fluid communication between the second port 72 and the guide passage 7 when in the open state.
In this embodiment, the magnetic body 51 is a magnetic ring, and the magnetic ring 51 surrounds the valve core 4; the magnetizer 42 is a magnetic conductive block. This structure enables a large magnetic attraction force to be generated between the magnetic body 51 and the magnetic conductor 42, and ensures the uniformity of the force. The movable frame 5 includes a movable frame body 5A and a force receiving portion 5B. The movable frame body 5A is formed in a hollow cylindrical shape, an annular groove 53 is formed in an inner peripheral surface of the movable frame body 5A, and the magnetic ring 51 is mounted in the annular groove 53. The bottom surface of the movable frame body 5A abuts against the bottom surface 151 of the inner cavity 1C of the shell, and the movable frame body 5A is limited. The top of the moving frame body 5A abuts against the other end of the elastic restoring element 6. The top end of the stress part 5B is connected with the bottom of the movable frame body 5A, and the bottom end of the stress part 5B extends into the central through hole 140 of the annular joint 14. The force receiving portion 5B may be an annular cylinder or may be constituted by a pair of cantilevers.
In the present embodiment, the spool 4 includes a spool body 41 and a seal portion 43. The valve core body 41 is provided with a cavity 410 which is opened towards the bottom surface, the top of the sealing part 43 extends into the cavity 410, the bottom of the sealing part 43 is in sealing fit with the inner wall of the flow guide channel 7, the inner wall of the second joint pipe 8 is provided with a sealing surface 83 which is matched with the valve core 4, in the embodiment, the bottom of the sealing part 43 is in a conical shape, and the sealing surface 83 is a conical surface, so that conical surface sealing is realized by the sealing part and the sealing surface 83. Preferably, the sealing portion 43 is made of a non-metal elastic material such as silicone rubber, etc., so as to ensure that the sealing portion 43 can reliably seal with the flow guide channel 7. The magnetizer 42 is fixedly disposed in the chamber 410 and located between the bottom of the chamber 410 and the top of the sealing portion 43. Further, the mouth of the cavity 30 of the puncture nail 3 is provided with a plurality of drainage grooves 35 at intervals along the circumferential direction to ensure the smoothness of the diversion channel. The top of the valve core 4 is provided with an external conical surface 45, the opening part of the cavity 30 of the puncture nail 3 is provided with an internal conical surface 33, and the taper of the external conical surface 45 is smaller than that of the internal conical surface 33. After the valve core 4 moves towards the inner cavity of the shell, the outer conical surface 45 is matched with the inner conical surface 33 of the puncture nail 3, so that the valve core 4 can be positioned, and the valve core 4 can be reset accurately.
Fig. 5 is a cross-sectional view schematically illustrating a medical leakage-proof connector according to an embodiment of the present invention when drawing fluid. Referring to fig. 5, during drawing, the connector 201 of the syringe 200 extends into the first mouthpiece 13 of the medical leakage-proof connector 100, and the puncture needle connector 301 connected to a liquid medicine bottle (not shown) extends into the second mouthpiece 8 of the medical leakage-proof connector 100. The elastic sealing member 2 is compressed and deformed by the pushing of the joint 201 of the syringe 200, and since the piercing pin 3 remains stationary, the top of the elastic sealing member 2 is pierced and the guide hole 31 is exposed during the compression deformation of the elastic sealing member 2. The movable frame 5 is pushed down by the joint 301 of the puncture needle 300, so that the movable frame 5 moves toward the interior of the housing cavity 1C against the elastic force of the elastic restoring element 6. The magnetic attraction between the magnetizer 42 and the magnetic body 51 moves the valve element 4 and the movable frame 5 together, and the valve element 4 is separated from the sealing surface 83 of the second mouthpiece and switched from the closed state to the open state. When the piston rod 202 of the syringe 200 is pulled backwards, the liquid medicine in the liquid medicine bottle flows into the syringe 200 through the puncture needle 300, the second port 72, the guide passage 7 and the guide hole 31 in sequence.
Fig. 6 is a cross-sectional view schematically illustrating the medical leakage-proof joint according to an embodiment of the present invention after completion of drawing. After the fluid withdrawal is completed, the hub 301 of the puncture needle 300 is withdrawn from the second hub 8. The movable frame 5 is reset by the elastic force of the elastic reset element 6. The magnetic attraction between the magnetizer 42 and the magnetic body 51 moves the valve core 4 and the movable frame 5 together until the valve core 4 contacts and seals with the sealing surface 83 of the second mouthpiece 8, and the valve core 4 is switched from the open state to the closed state. The medical staff can hold the medical leakage-proof connector 100 and the syringe 200 by hand to move to the location of the patient, so as to inject the medical liquid into the patient.
In the process that the medical staff separates the puncture needle 300 from the medical leakage-proof joint 100 and moves the puncture needle, the phenomenon that the liquid medicine leaks and drips from the second interface 72 is minimized or eliminated because the valve core 4 is in the closed state, so that the safety of the medical staff is ensured.
After the withdrawal is completed, the second mouthpiece 8 may be connected to a needleless connector (not shown) of an infusion path for infusing fluid to a patient. The needle-free joint pushes the movable frame 5 to open the valve core 4, thereby realizing fluid communication between the infusion passage and the flow guide channel 7. When the medical staff pushes the piston rod 202 of the syringe 200 forward, the medical fluid in the syringe 200 flows into the infusion path, thereby achieving the infusion to the patient. After the infusion is completed, the syringe 200 is withdrawn from the first mouthpiece 13, and the needleless connector is withdrawn from the second mouthpiece 8. In the process of separating the syringe 200 from the medical leakage-proof connector 100, the elastic sealing element 2 which is compressed and deformed is restored, the puncture nail 3 is kept still, the elastic sealing element 2 shields the diversion hole 31 and closes the first interface 131, and the valve core 4 is restored to the closed state, so that the phenomena of leakage and dripping of the liquid medicine from the first interface 131 and the second interface 72 are minimized or eliminated, and the safety of medical staff is guaranteed.
The present embodiment has been described in conjunction with specific examples, but it will be understood by those of ordinary skill in the art that the present invention is not limited to the examples described herein, and that various modifications and changes may be made without departing from the spirit and scope of the present invention.
Claims (10)
1. A medical leakproof joint is characterized by comprising a shell, a flow guide channel, an elastic sealing element, a valve core, a movable frame and an elastic reset element;
the housing has an interior cavity and a first interface;
the flow guide channel penetrates through the inner cavity of the shell and is in fluid seal with the inner cavity; one end of the flow guide channel is provided with a second interface;
the elastic sealing piece closes the first interface in a fluid-tight mode, is compressed and deformed when being subjected to external force, and can enable the first interface to be communicated with the other end of the flow guide channel when being compressed and deformed;
the elastic reset element is arranged in the inner cavity of the shell and is abutted against one end of the movable frame;
the other end of the movable frame can be driven by external force, so that the movable frame overcomes the elasticity of the elastic reset element to move towards the inner cavity of the shell, and the movable frame is reset under the action of the elasticity of the elastic reset element after the external force is eliminated; the moving frame is provided with a magnetic body;
the valve core is provided with a magnetizer; the magnetic attraction between the magnetizer and the magnetic body can enable the valve core and the movable frame to move together; the valve core is switched between a closed state and an open state through movement, the valve core blocks fluid communication between the second port and the flow guide channel when in the closed state, and the valve core enables fluid communication between the second port and the flow guide channel when in the open state.
2. The medical leak-proof connector of claim 1, comprising a piercing pin fixedly connected to the housing, the piercing pin having a guiding hole; the flow guide channel extends between the flow guide hole and the second port; the puncturing nail can puncture the elastic sealing piece in the compression deformation process of the elastic sealing piece and expose the diversion hole, so that the liquid in the diversion channel can flow to the outside or the outside fluid can flow into the diversion channel through the diversion hole.
3. The medical leak-proof connector as defined in claim 2, wherein the elastic sealing member has a top end near the first port and a bottom end far from the first port, and the bottom end of the elastic sealing member defines a cavity extending axially along the elastic sealing member;
the top of the puncture nail extends into the cavity of the elastic sealing element, and the bottom surface of the puncture nail is provided with a cavity extending along the axial direction of the puncture nail; the diversion hole is arranged on the side surface of the puncture nail and runs through the cavity of the puncture nail.
4. The medical leakage-proof connector of claim 3, wherein the top of the valve core is provided with an external conical surface, the mouth of the cavity of the puncture nail is provided with an internal conical surface, and the taper of the external conical surface is smaller than that of the internal conical surface.
5. The medical leak-proof joint as defined in claim 1, wherein the magnetic body is a magnetic ring surrounding the valve core; the magnetizer is a magnetic conduction block.
6. The medical leak-proof joint as claimed in claim 5, wherein the movable frame comprises a movable frame body and a force-receiving portion; the moving frame body is in a hollow cylinder shape, an annular groove is formed in the inner circumferential surface of the moving frame body, and the magnetic ring is installed in the annular groove; the bottom surface of the moving frame body abuts against the bottom surface of the inner cavity of the shell, and the top of the moving frame body abuts against the other end of the elastic reset element; the top end of the stress part is connected with the bottom of the movable frame body.
7. The medical leak-proof connector of claim 2, wherein the housing has a first mouthpiece and an annular connector; the medical leak-proof joint comprises a second mouth piece;
the first interface tube is arranged at one end of the shell, the annular joint is arranged at the other end of the shell opposite to one end of the shell and partially surrounds the second interface tube, the annular joint and the second interface tube are coaxially arranged, and one end of the second interface tube extends out of a central through hole of the annular joint; the central through hole of the annular joint is communicated with the inner cavity of the shell, and the inner circumferential surface of the annular joint is provided with internal threads;
the bottom of the puncture nail is hermetically connected with the other end of the second interface tube, and the puncture nail and the second interface tube jointly limit the flow guide channel.
8. The medical leak-proof fitting of claim 7, wherein the housing comprises a top cover portion and a housing body;
the top cover part comprises a cover body part and the first mouthpiece, and the bottom end of the first mouthpiece is connected with the top of the cover body part; the puncture nail penetrates through the cover body part and is connected with the cover body part; the top and the bottom of the cover body part are respectively provided with a first annular groove and a second annular groove which surround the puncture nail, the bottom end of the elastic sealing element is embedded in the first annular groove, the top end of the elastic sealing element extends into the first mouthpiece, and the top of the puncture nail extends into a cavity with an opening at the bottom surface of the elastic sealing element; one end of the elastic reset element is embedded in the second annular groove;
the shell body is provided with a central through hole, and the cover body covers the top of the shell body and is connected with the shell body in a sealing way; the top end of the annular joint is connected with the bottom of the shell body.
9. The medical leak-proof joint as claimed in any one of claims 1 to 8, wherein the valve core comprises a valve core body and a sealing portion; the valve core body is provided with a cavity with an opening towards the bottom surface, the top of the sealing part extends into the cavity, the bottom of the sealing part is in sealing fit with the inner wall of the flow guide channel, and the sealing part is made of a non-metal elastic material; the magnetizer is fixedly arranged in the cavity and is positioned between the bottom of the cavity and the top of the sealing part.
10. A medical leakage-proof joint is characterized by comprising a shell, a male luer connector tube, an elastic sealing element, a puncture nail, a valve core, a movable frame and an elastic reset element;
the housing has an inner cavity, a female luer connector tube and an annular joint coaxially arranged with the male luer connector tube; the female luer connector tube is arranged at the first end of the shell, the annular joint is arranged at the second end of the shell opposite to the first end of the shell and partially surrounds the male luer connector tube, and one end of the male luer connector tube extends out of the central through hole of the annular joint; the central through hole of the annular joint is communicated with the inner cavity of the shell, and the inner circumferential surface of the annular joint is provided with internal threads;
the resilient seal closes the female luer mouthpiece in a fluid-tight manner and is compressively deformed when subjected to an external force; the puncture nail is fixedly connected with the shell, and the top of the puncture nail is provided with a flow guide hole; the bottom of the puncture nail is connected with the other end of the male luer connector tube, the puncture nail and the male luer connector tube jointly define a flow guide channel, and the flow guide channel penetrates through the inner cavity of the shell and keeps fluid seal with the inner cavity; the puncture nail can puncture the elastic sealing piece in the compression deformation process of the elastic sealing piece and expose the diversion hole, so that the fluid which can flow into the outside or the outside through the diversion hole from the liquid in the diversion channel can flow into the diversion channel;
the elastic reset element is arranged in the inner cavity of the shell, one end of the elastic reset element is fixed, and the other end of the elastic reset element is abutted against one end of the movable frame;
the other end of the movable frame extends into the central through hole of the annular joint; the other end of the movable frame can be driven by external force, so that the movable frame overcomes the elasticity of the elastic reset element to move towards the inner cavity of the shell, and the movable frame is reset under the action of the elasticity of the elastic reset element after the external force is eliminated; the moving frame is provided with a magnetic body;
the valve core is arranged in the male luer connector tube, and the inner wall of the male luer connector tube is provided with a sealing surface matched with the valve core; the valve core is provided with a magnetizer, and the magnetic attraction between the magnetizer and the magnetic body can enable the valve core and the movable frame to move together; the valve core is switched between a closed state and an open state through movement, the valve core is in contact sealing with the sealing surface of the male luer connector tube when in the closed state, and the valve core is separated from the sealing surface of the male luer connector tube when in the open state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223880.1A CN111714726A (en) | 2019-03-22 | 2019-03-22 | Medical leakage-proof joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223880.1A CN111714726A (en) | 2019-03-22 | 2019-03-22 | Medical leakage-proof joint |
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| Publication Number | Publication Date |
|---|---|
| CN111714726A true CN111714726A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910223880.1A Pending CN111714726A (en) | 2019-03-22 | 2019-03-22 | Medical leakage-proof joint |
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| CN (1) | CN111714726A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635771A (en) * | 2022-02-24 | 2022-06-17 | 北汽福田汽车股份有限公司 | Urea sprays pipe connection seat, urea and sprays pipeline structure and vehicle |
| CN117205080A (en) * | 2023-11-07 | 2023-12-12 | 德宝恒生科技服务有限公司 | Dispensing device, gas storage method, and gas dispensing method |
-
2019
- 2019-03-22 CN CN201910223880.1A patent/CN111714726A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635771A (en) * | 2022-02-24 | 2022-06-17 | 北汽福田汽车股份有限公司 | Urea sprays pipe connection seat, urea and sprays pipeline structure and vehicle |
| CN117205080A (en) * | 2023-11-07 | 2023-12-12 | 德宝恒生科技服务有限公司 | Dispensing device, gas storage method, and gas dispensing method |
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