Sterile disposable needleless connecting piece capable of being quickly connected

Abstract

The invention relates to the technical field of medical instruments, in particular to a sterile disposable needleless connecting piece capable of achieving quick connection. The sterile disposable needleless connecting piece comprises a needleless connector shell, a silica gel piece and a quick connector, the quick connector comprises a shell body, two installation protrusions, two fastening springs and two fastening pieces, the installation protrusions are arranged on the two sides of the bottom of the shell body, and the two fastening springs are arranged on the two sides of the bottom of the shell body. Mounting protrusions are arranged in the shell, sliding grooves are formed in the mounting protrusions, fastening pieces are arranged in the sliding grooves in a sliding mode, the annular mounting grooves are formed in the end opening of the shell to guide external needleless equipment to be inserted, the fastening pieces installed through fastening springs are arranged on the two sides of the interior of the shell, and instant buckle connection with locking holes in the external needleless equipment can be achieved; during operation, rotation is not needed, and locking can be automatically completed through a mechanical structure by direct insertion, so that the connection time of external needleless equipment is shortened from several seconds to the moment, the operation efficiency in an emergency medical scene is greatly improved, and meanwhile, the connection safety and reliability are kept.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a sterile, quick-connect, disposable needle-free connector. Background Technology

[0002] When long-term and repeated infusions are required during intravenous infusion therapy, a needleless connector is generally used to connect the indwelling venous needle or catheter inserted into the human vein to the drug injection equipment, thereby enabling operations such as drug administration.

[0003] Patent document CN204121510U discloses a needleless connector, including a needleless connector and a silicone component. The needleless connector consists of a needleless connector shell and a flow channel. The silicone component includes an upper end, an extension end, and a lower end. The extension end has a straight section and an inclined section. The straight section of the silicone component forms a normally closed passage, and the inclined section forms a conical space. The lower end of the silicone component is sealed to the needleless connector shell. The upper port of the flow channel is located at the bottom of the conical space. The needleless connector using this technical solution employs a silicone component with a passage, which allows for the insertion of external needleless devices, and the passage opens and closes smoothly. The upper end face of the silicone component is concave, increasing the sealing effect of the needleless connector. The lower end of the silicone component is fixedly positioned within the receiving gap, making the connection between the silicone component and the needleless connector more secure and preventing separation. The upper port of the shell has a vent hole to prevent pressure difference from causing slow closure of the passage, ensuring smooth closure.

[0004] Existing needleless connectors typically have a Luer connector at the top of the connector housing, which is used to connect to external needleless devices. Although the Luer connector has a certain degree of versatility, it requires rotation and mating, resulting in a slow connection speed, which may delay treatment in emergency medical situations. Summary of the Invention

[0005] The purpose of this invention is to provide a sterile, quick-connect disposable needleless connector, which aims to solve the technical problem that existing needleless connectors usually have a Luer connector at the top of the connector shell to complete the connection with external needleless devices. Although the Luer connector has a certain degree of versatility, the Luer connector requires rotation and docking, resulting in a slow connection speed, which may delay treatment in emergency medical situations.

[0006] To achieve the above objectives, the present invention provides a sterile, quick-connect disposable needleless connector, comprising a needleless connector housing, a silicone component, and a quick-connect head. The silicone component is mounted on the top of the needleless connector housing. The silicone component includes an upper end, an extension end, and a lower end. The extension end has a straight section and an inclined section. The straight section of the silicone component forms a normally closed passage, and the upper port of the passage is located on the upper end face of the silicone component. The inclined section of the silicone component forms a conical space, and the conical space is located at the bottom of the passage.

[0007] The quick connector includes a housing, two mounting protrusions, two fastening springs, and two fasteners. The housing is screwed to the top of the needleless connector housing and located outside the silicone part. An annular mounting groove is provided at the end of the housing away from the needleless connector housing for guiding the insertion of an external needleless device. The mounting protrusions are fixedly provided on both the left and right sides of the housing. Each mounting protrusion has a sliding groove inside, and the end of the sliding groove communicates with the annular mounting groove. The fasteners are slidably disposed inside the sliding grooves. A fastening spring is provided between the end of each fastener away from the annular mounting groove and the inner end wall of the corresponding mounting protrusion. The fasteners are configured to adapt to the corresponding locking holes on the external needleless device.

[0008] Each of the fasteners includes a fastening head and two limiting protrusions. Each of the slide grooves has a limiting groove on both sides. The limiting protrusions are fixedly provided on both sides of the fastening head. Each limiting protrusion slides in the corresponding limiting groove.

[0009] Each of the fastening heads has a guide ramp at the end away from the corresponding fastening spring. The guide ramp is configured such that when an external needleless device is inserted into the annular mounting groove, its end can contact and press the guide ramp, driving the fastening head to move into the groove against the elastic force of the fastening spring.

[0010] Each of the fastening heads has a pull rod at the end away from the annular mounting groove, each pull rod is located inside the corresponding fastening spring, and the end of each pull rod away from the corresponding fastening head passes through the corresponding mounting protrusion.

[0011] The annular mounting groove has guide recesses on both the front and rear sides, and the guide recesses are configured to adapt to the corresponding guide protrusions on the external needleless device.

[0012] The sterile, quick-connectable, disposable needleless connector also includes a disposable sterile barrier, which is a sealing film. The sealing film is sealed and covered at the port of the housing with medical-grade heat-sealing adhesive, that is, covering the entrance of the annular mounting groove, and forming a sterile shield for the port of the internal passageway.

[0013] The sealing film is provided with a quick-release protrusion at its edge.

[0014] This invention discloses a sterile, quick-connect, disposable needleless connector, comprising a needleless connector housing, a silicone component, and a quick-connect head. The quick-connect head includes a housing, two mounting protrusions, two fastening springs, and two fasteners. The mounting protrusions are fixedly arranged on both the left and right sides of the housing. Each mounting protrusion has a groove inside, the end of which communicates with an annular mounting groove. The fasteners are slidably arranged inside the grooves. The annular mounting groove at the port of the housing guides the insertion of an external needleless device. The fasteners, mounted by the fastening springs on both sides of the housing, allow for instantaneous snap-fit ​​connection with the locking holes on the external needleless device. No rotation is required during operation; direct insertion automatically locks the connection via a mechanical structure. This reduces the connection time of the external needleless device from several seconds to an instant, greatly improving operational efficiency in emergency medical scenarios while maintaining connection safety and reliability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the external structure of the sterile, quick-connect, disposable needleless connector according to the first embodiment of the present invention.

[0017] Figure 2 This is a side view of the sterile, quick-connect, disposable needle-free connector according to the first embodiment of the present invention.

[0018] Figure 3 This invention provides Figure 2 A cross-sectional view of the internal structure of line AA.

[0019] Figure 4 This invention provides Figure 2 A cross-sectional view of the internal structure of the BB line.

[0020] Figure 5This invention provides Figure 3 A magnified view of the local structure at point C.

[0021] Figure 6 This is a schematic diagram of the external structure of a sterile, quick-connect, disposable needleless connector according to the second embodiment of the present invention.

[0022] 101-Pinless connector housing, 102-Silicone part, 103-Housing, 104-Mounting protrusion, 105-Fixing spring, 106-Fixing head, 107-Limiting protrusion, 108-Upper end, 109-Straight section, 110-Angled section, 111-Lower end, 112-Passway, 113-Conical space, 114-Annular mounting groove, 115-Sliding groove, 116-Limiting groove, 117-Guide inclined surface, 118-Pull rod, 119-Actuating block, 120-Guide recess, 201-Sealing film, 202-Quick release protrusion. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] First embodiment:

[0025] Please see Figures 1 to 5 ,in Figure 1 This is a schematic diagram of the external structure of the sterile, quick-connect, disposable needle-free connector of the first embodiment. Figure 2 This is a side view of the sterile, quick-connect, disposable needle-free connector of the first embodiment. Figure 3 yes Figure 2 A cross-sectional view of the internal structure of line AA. Figure 4 yes Figure 2 A cross-sectional view of the internal structure of the BB line. Figure 5 yes Figure 3 A magnified view of the local structure at point C.

[0026] This invention provides a sterile, quick-connect disposable needle-free connector: comprising a needle-free connector housing 101, a silicone component 102, and a quick-connect head. The quick-connect head includes a housing 103, two mounting protrusions 104, two fastening springs 105, and two fasteners, each of which includes a fastening head 106 and two limiting protrusions 107. This solution addresses the problem that existing needle-free connectors typically use a Luer connector at the top of the connector housing for connection to external needle-free devices. While the Luer connector has some versatility, it requires rotational mating, resulting in a slow connection speed and potentially delaying treatment in emergency medical situations. Therefore, the aforementioned solution can be applied to the structure of disposable needle-free connectors.

[0027] In this specific embodiment, the silicone element 102 is installed at the top of the needleless connector housing 101. The silicone element 102 includes an upper end 108, an extension end, and a lower end 111. The extension end has a straight section 109 and an inclined section 110. The straight section 109 of the silicone element 102 forms a normally closed passage 112, and the upper end 108 of the passage 112 is located on the upper end 108 surface of the silicone element 102. The inclined section 110 of the silicone element 102 forms a conical space 113, and the conical space 113 is located at the bottom of the passage 112. Since the silicone element 102 forms the normally closed passage 112 through its straight section 109 and forms the conical space 113 at the bottom through its inclined section 110, the sealing and flow guiding functions of the needleless connector are realized.

[0028] The housing 103 is screwed to the top of the needleless connector housing 101 and located outside the silicone part 102. An annular mounting groove 114 is provided at one end of the housing 103 away from the needleless connector housing 101. The annular mounting groove 114 guides the insertion of an external needleless device. Mounting protrusions 104 are fixedly provided on both the left and right sides of the housing 103. Each mounting protrusion 104 has a sliding groove 115 inside, and the end of the sliding groove 115 communicates with the annular mounting groove 114. A fastener is slidably disposed inside the sliding groove 115. The end of each fastener away from the annular mounting groove 114 is connected to the corresponding mounting protrusion. The fastening springs 105 are provided between the inner end walls of 104. The fasteners are configured to adapt to the corresponding locking holes on the external needleless device. The external needleless device is guided to be inserted by the annular mounting groove 114 at the port of the housing 103. The fasteners installed by the fastening springs 105 are provided on both sides of the housing. They can be instantly snapped into place with the locking holes on the external needleless device. No rotation is required during operation. The device can be directly inserted and locked automatically by the mechanical structure. This reduces the connection time of the external needleless device from several seconds to an instant, greatly improving the operational efficiency in emergency medical scenarios, while maintaining the safety and reliability of the connection.

[0029] Secondly, each of the slide grooves 115 is provided with a limiting groove 116 on both sides, and the fastening head 106 is fixedly provided with a limiting protrusion 107 on both sides. Each limiting protrusion 107 slides in the corresponding limiting groove 116. Through the setting of the limiting groove 116 and the limiting protrusion 107, the structure of the fastening head 106 is more stable when it slides inside the slide groove 115.

[0030] Meanwhile, each of the fastening heads 106 is provided with a guide slope 117 at one end away from the corresponding fastening spring 105. The guide slope 117 is configured such that when an external needleless device is inserted into the annular mounting groove 114, its end can contact and press the guide slope 117, driving the fastening head 106 to move into the groove 115 against the elastic force of the fastening spring 105.

[0031] In addition, each of the fastening heads 106 is provided with a pull rod 118 at the end away from the annular mounting groove 114. Each pull rod 118 is located inside the corresponding fastening spring 105. The end of each pull rod 118 away from the corresponding fastening head 106 passes through the corresponding mounting protrusion 104. When it is necessary to remove the external needleless device, medical staff only need to pull the pull rod 118 to disengage the fastening head 106 from the locking hole on the external needleless device to complete the disassembly of the external needleless device. Furthermore, each pull rod 118 is provided with a toggle block 119 at the end extending to the outside of the corresponding mounting protrusion 104. With the toggle block 119, medical staff only need to use two fingertips to simultaneously toggle the toggle block 119 to disengage the fastening head 106 from the locking hole of the external needleless device.

[0032] Furthermore, guide recesses 120 are provided on both the front and rear sides of the interior of the annular mounting groove 114. The guide recesses 120 are configured to adapt to the corresponding guide protrusions on the external needleless device. The setting of the wire recesses can guide the insertion of the external needleless device, making it easier for the fastening head 106 to correspond to the locking hole.

[0033] When using the sterile, quick-connect disposable needleless connector of this embodiment, the silicone part 102 forms a normally closed passage 112 through its straight section 109 and forms the tapered space 113 at the bottom through its inclined section 110, thus achieving the sealing and guiding functions of the needleless connector. Furthermore, the annular mounting groove 114 at the port of the housing 103 guides the insertion of the external needleless device, and the fasteners installed on both sides of its interior by the fastening spring 105 can achieve instantaneous snap-fit ​​connection with the locking hole on the external needleless device. During operation, no rotation is required; direct insertion will automatically lock the connection through the mechanical structure. This reduces the connection time of the external needleless device from several seconds to an instant, greatly improving the operational efficiency in emergency medical scenarios while maintaining the safety and reliability of the connection.

[0034] Second embodiment:

[0035] Based on the first embodiment, please refer to Figure 6 , Figure 6 This is a schematic diagram of the external structure of the sterile, quick-connect, disposable needleless connector according to the second embodiment.

[0036] The present invention provides a sterile, quick-connect disposable needleless connector, which also includes a disposable sterile barrier.

[0037] In this specific embodiment, the disposable sterile barrier is a sealing film 201. The sealing film 201 is sealed and covered at the port of the housing 103 with medical-grade heat-sealing adhesive, that is, covering the entrance of the annular mounting groove 114, and forming a sterile shield for the port of the internal passage 112. By heat-sealing a layer of medical-grade sealing film 201 at the port of the quick connector, the disposable sterile barrier is constructed, thereby ensuring that the port of the passage 112 of the internal silicone part 102 is in a sterile state until it is removed before use, effectively preventing microbial contamination and cross-infection.

[0038] The sealing film 201 is provided with a quick-release protrusion 202 at its edge, which makes it easier to open the sealing film 201.

[0039] When using the sterile, quick-connect disposable needleless connector of this embodiment, a medical-grade sealing film 201 is heat-sealed over the port of the quick-connect head to construct the disposable sterile barrier, thereby ensuring that the port of the passage 112 of the internal silicone part 102 is sterile until it is removed before use, effectively preventing microbial contamination and cross-infection. Furthermore, the quick-release protrusion 202 makes it more convenient to remove the sealing film 201.

[0040] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A sterile, quick-connect, disposable needle-free connector, comprising a needle-free connector housing and a silicone component, wherein the silicone component is mounted on the top of the needle-free connector housing, the silicone component includes an upper end, an extended end, and a lower end, the extended end having a straight section and an inclined section, the straight section of the silicone component forming a normally closed passage, and the upper port of the passage being located on the upper end face of the silicone component, the inclined section of the silicone component forming a conical space, the conical space being located at the bottom of the passage, characterized in that... It also includes quick connectors; The quick connector includes a housing, two mounting protrusions, two fastening springs, and two fasteners. The housing is screwed to the top of the needleless connector housing and located outside the silicone part. An annular mounting groove is provided at the end of the housing away from the needleless connector housing for guiding the insertion of an external needleless device. The mounting protrusions are fixedly provided on both the left and right sides of the housing. Each mounting protrusion has a sliding groove inside, and the end of the sliding groove communicates with the annular mounting groove. The fasteners are slidably disposed inside the sliding grooves. A fastening spring is provided between the end of each fastener away from the annular mounting groove and the inner end wall of the corresponding mounting protrusion. The fasteners are configured to adapt to the corresponding locking holes on the external needleless device.

2. The sterile, quick-connect, disposable needle-free connector as described in claim 1, characterized in that, Each of the fasteners includes a fastening head and two limiting protrusions. Each of the slide grooves has a limiting groove on both sides. The limiting protrusions are fixedly provided on both sides of the fastening head. Each limiting protrusion slides in its corresponding limiting groove.

3. The sterile, quick-connect, disposable needle-free connector as described in claim 2, characterized in that, Each of the fastening heads has a guide ramp at one end away from the corresponding fastening spring. The guide ramp is configured such that when an external needleless device is inserted into the annular mounting groove, its end can contact and press against the guide ramp, driving the fastening head to move into the groove.

4. The sterile, quick-connect, disposable needle-free connector as described in claim 3, characterized in that, Each of the fastening heads is provided with a pull rod at the end away from the annular mounting groove. Each pull rod is located inside the corresponding fastening spring, and the end of each pull rod away from the corresponding fastening head passes through the corresponding mounting protrusion.

5. The sterile, quick-connect, disposable needle-free connector as described in claim 1, characterized in that, The annular mounting groove has guide recesses on both the front and rear sides, and the guide recesses are configured to adapt to the corresponding guide protrusions on the external needleless device.

6. The sterile, quick-connect, disposable needle-free connector as described in claim 1, characterized in that, The sterile, quick-connectable, disposable needleless connector also includes a disposable sterile barrier, which is a sealing film. The sealing film is sealed and covered at the port of the housing with medical-grade heat-sealing adhesive, that is, covering the entrance of the annular mounting groove, and forming a sterile shield for the port of the internal passageway.

7. The sterile, quick-connect, disposable needle-free connector as described in claim 6, characterized in that, A quick-release protrusion is fixedly provided at the edge of the sealing film.

Images