Connector assembly capable of preventing blood from overflowing and remaining needle

Abstract

The utility model relates to the technical field of medical accessories, in particular to a connector assembly capable of preventing blood from overflowing and an indwelling needle, the connector assembly capable of preventing blood from overflowing comprises a first connector, a second connector, a plug, a spring and a fastener, the first connector comprises a first channel and a second channel, a plug is arranged between the first channel and the second channel, the spring enables the plug to separate the first channel from the second channel, the fastener is arranged on the second connector in a sleeving mode, the fastener is in threaded connection with the first connector, the fastener is tightened to enable the second connector to be inserted into the first channel and act on the plug to enable the plug to move, and the first channel is communicated with the second channel. The fastener is unscrewed, under the action of the spring, the plug pushes the second connector to move outwards until the first channel is separated from the second channel, and therefore blood is prevented from overflowing.

Description

Technical Field

[0001] The utility model relates to the technical field of medical accessories, in particular to a connector assembly and an indwelling needle for preventing blood from overflowing. Background Art

[0002] An IV catheter is a commonly used medical device in clinical practice. It usually consists of a puncture needle and a soft tube wrapped around the needle. Therefore, the IV catheter is also called a trocar. When in use, the needle and the soft tube on the IV catheter are punctured into the patient's vein together. After the puncture is completed, the needle is pulled out and the soft tube is left in the patient's body so that infusion can be performed at any time. Using an IV catheter can reduce the pain and damage caused by repeated punctures and reduce the patient's discomfort. At the same time, the IV catheter can provide a stable and reliable delivery channel for operations such as delivering liquids or collecting samples.

[0003] When using an indwelling needle, one end of the infusion set is connected to the connector of the indwelling needle for delivering liquid medicine. After the liquid medicine is delivered, the infusion set needs to be disconnected from the indwelling needle connector. When the infusion set is disconnected, the indwelling needle connector fails to close in time because the pulling-out action is usually fast. At the same time, due to the pressure difference between the inside and outside of the blood vessels, blood may overflow or even splash, thereby causing blood contamination and increasing the risk of occupational exposure for medical staff.

[0004] In view of the above problems, the utility model provides a connector assembly and an indwelling needle that can prevent blood from overflowing. Utility Model Content

[0005] The purpose of the utility model is to provide a connector assembly that prevents blood from overflowing in order to address the above-mentioned shortcoming of the current indwelling needle in actual use, that is, blood overflows when the tube is removed.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0007] A joint assembly for preventing blood spillage, comprising:

[0008] a first connector, the first connector including a first channel and a second channel, one end of the second channel being connected to the first channel and the other end being an output end, a plug being provided between the first channel and the second channel, the plug being slidable within the second channel, a spring being provided on a side of the plug facing away from the first channel, the plug is operable to isolate the first channel from the second channel under the action of the spring;

[0009] a second joint, wherein a third channel is provided in the second joint, one end of the third channel being an input end and the other end extending through a side wall of the second joint, the outer wall size of the second joint being adapted to the size of the first channel, a fastener being slidably sleeved on the second joint, a retaining ring being provided on the second joint, the retaining ring being capable of abutting against the fastener, and the fastener being threadedly connected to the first joint;

[0010] The fastener is rotated so that the thread on the fastener is screwed into the thread on the first joint, so that the second joint is inserted into the first channel, so that the second joint pushes the plug to move, so that the second channel is connected to the first channel, and so that the second channel is connected to the third channel.

[0011] As a preferred technical solution of the present application, the end of the plug that abuts against the end face of the second channel is tapered, corresponding to the end face of the second channel being a tapered surface.

[0012] As a preferred technical solution of the present application, the outer peripheral size of the plug is adapted to the size of the second channel.

[0013] As a preferred technical solution of the present application, a countersunk hole is provided on the side of the plug abutting against the spring, and the size of the countersunk hole is adapted to the size of the spring.

[0014] As a preferred technical solution of this application, the first joint is transparent.

[0015] As a preferred technical solution of the present application, a water absorbing body is further provided on the second joint, and the water absorbing body is used to absorb the residual liquid medicine on the third channel.

[0016] As a preferred technical solution of this application, it also includes a sealing cover, which is threadedly connected to the first joint.

[0017] As a preferred technical solution of this application, a sealing gasket is provided in the sealing cover.

[0018] In order to achieve the above-mentioned purpose of the utility model, the utility model also provides the following technical solutions:

[0019] A retention needle adopts the above-mentioned connector assembly.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Use the connector assembly of the present application, insert the second connector into the first channel, wait for the end of the second connector to abut against the plug, rotate the fastener so that the thread on the fastener is screwed into the thread on the first connector, the fastener acts on the retaining ring, pushes the second connector to continue to be inserted, the second connector pushes the plug to move, the first channel is connected to the second channel, continue to rotate the fastener so that the second connector continues to push the plug forward until the second channel is connected to the third channel. At this time, the connector assembly is in a conducting state, connect the input end of the second connector to the infusion pump, and connect the output end of the first connector to the patient. The drug solution is sequentially input into the patient's body through the infusion pump, the input end, the third channel, the second channel and the output end. After the drug solution is delivered, the second connector needs to be pulled out. At this time, some blood may flow back to the second channel; rotate the fastener so that the thread on the fastener is unscrewed from the thread on the first connector. Under the action of the spring At this time, the plug separates the first channel from the second channel, and avoids the spillage of blood in the second channel; further, the fastener adopts a threaded connection method, and when the fastener is unscrewed, the sudden withdrawal of the second connector is avoided, and the splashing of blood is avoided; further, the spring acts on the plug to keep the plug in contact with the end face of the second channel, thereby ensuring the seal between the plug and the end face of the second channel, and further helping to prevent blood from spilling.

[0022] 2. The output end of the first connector is connected to the indwelling needle tube of the indwelling needle as a whole. In this way, after the second connector is pulled out, blood spillage is avoided, and the reliability of the indwelling needle is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of one embodiment of a connector assembly for preventing blood spillage according to the present application;

[0024] Figure 2 This is a schematic diagram of a split structure of one embodiment of a connector assembly for preventing blood spillage of the present application;

[0025] Figure 3 This is a schematic cross-sectional structural diagram of one embodiment of a first connector of a connector assembly for preventing blood spillage of the present application;

[0026] Figure 4 This is a schematic cross-sectional structural diagram of one embodiment of a connector assembly for preventing blood spillage of the present application in a blocked state;

[0027] Figure 5 This is a schematic cross-sectional structural diagram of one embodiment of a connector assembly for preventing blood spillage of the present application in a conductive state;

[0028] Figure 6 This is a schematic cross-sectional view of one embodiment of a sealing cap of a connector assembly for preventing blood spillage according to the present application;

[0029] Figure 7 This is a schematic structural diagram of one embodiment of an indwelling needle of the present application;

[0030] Markings in the figure: 1-first connector, 2-second connector, 3-plug, 4-spring, 5-fastener, 6-water absorbent, 7-sealing cover, 8-sealing gasket, 11-first channel, 12-second channel, 13-output end, 21-third channel, 22-input end, 23-retaining ring, 31-sink hole, 100-indwelling needle. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0032] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of this utility model, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is typically placed when in use, or the orientations or positional relationships commonly understood by those skilled in the art. Such terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" and the like are used solely for distinction and description and should not be construed as indicating or implying relative importance.

[0036] Example 1: See Figures 1 to 6 As shown,

[0037] This embodiment provides a connector assembly for preventing blood spillage, comprising:

[0038] A first connector 1, comprising a first channel 11 and a second channel 12, wherein one end of the second channel 12 is connected to the first channel 11 and the other end is an output end 13, a plug 3 is provided between the first channel 11 and the second channel 12, the plug 3 being slidable within the second channel 12, and a spring 4 is provided on the side of the plug 3 facing away from the first channel 11, under the action of the spring 4, the plug 3 isolates the first channel 11 from the second channel 12;

[0039] A second connector 2, wherein a third channel 21 is provided in the second connector 2, one end of the third channel 21 being an input end 22, and the other end extending through a side wall of the second connector 2. The outer wall size of the second connector 2 is adapted to the size of the first channel 11. A fastener 5 is slidably sleeved on the second connector 2, and a retaining ring 23 is provided on the second connector 2. The retaining ring 23 can abut against the fastener 5, and the fastener 5 is threadedly connected to the first connector 1;

[0040] The fastener 5 is rotated so that the thread on the fastener 5 is screwed into the thread on the first joint 1, so that the second joint 2 is inserted into the first channel 11, so that the second joint 2 pushes the plug 3 to move, so that the second channel 12 is connected to the first channel 11, and so that the second channel 12 is connected to the third channel 21.

[0041] 2, and the second end 12 is connected to the third end 13 of the second connector 2. The second end 12 is connected to the third end 13 of the second connector 2. The third end 13 of the second connector 2 is connected to the third end 13 of the second connector 2. The fourth end 13 of the second connector 2 is connected to the third end 13 of the second connector 2. The fourth end 13 of the second connector 2 is connected to the third end 13 of the second connector 2. The fourth end 13 of the second connector 2 is connected to the third end 13 of the second connector 2. The fourth end 13 of the second connector 2 is connected to the third end 13 of the first connector 1 ... first connector 1. The fourth end 13 of the second connector 2 is connected to the third end 13 of the second connector 2. The fourth end 13 of the second connector 2 is connected to the third end 13 of the first connector 1. The fourth end 13 of the second connector 2 is connected to the third end 13 of the second connector 2. The fourth end 13 of the second connector 2 is connected to the third end 13 of the first connector 1. The fourth end 13 of the second connector 2 is connected to When the plug 3 is in the closed position, the second connector 2 is in the closed position, and the third connector 2 is in the closed position, so that the plug 3 is in the closed position.

[0042] As a preferred embodiment, based on the above manner, further, one end of the plug 3 that abuts against the end surface of the second channel 12 is tapered, and the end surface of the corresponding second channel 12 is a tapered surface.

[0043] The structure of the conical fitting conical surface is adopted. Under the action of the spring 4, the sealing effect after the plug 3 abuts against the end surface of the second channel 12 is better, which is further beneficial to prevent blood from overflowing.

[0044] As a preferred embodiment, based on the above-mentioned manner, further, the outer peripheral size of the plug 3 is adapted to the size of the second channel 12 .

[0045] The above structure, on the one hand, guides the movement of the plug 3, which is beneficial to the reciprocating movement of the plug 3 in the second channel 12; on the other hand, it ensures that the conical surface of the plug 3 abuts the end surface of the second channel 12 more stably, which is further beneficial to prevent blood overflow.

[0046] As a preferred embodiment, on the basis of the above-mentioned manner, further, a countersunk hole 31 is provided on the side of the plug 3 abutting against the spring 4 , and the size of the countersunk hole 31 is adapted to the size of the spring 4 .

[0047] The setting of the countersunk hole 31 plays a positioning role for the spring 4, ensuring the force of the spring 4 on the plug 3, which is beneficial to the stable movement of the plug 3, the abutment between the plug 3 and the end face of the second channel 12, and further beneficial to preventing blood from overflowing.

[0048] As a preferred embodiment, based on the above embodiment, further, the first joint 1 is transparent.

[0049] The first connector 1 is set to be transparent. This configuration makes it easy to observe the movement of the plug 3. When an abnormal situation occurs, such as the plug 3 is not reset, the second connector 2 can be repeatedly pushed to make the plug 3 move smoothly, thereby ensuring the sealing effect of the plug 3 and preventing blood from overflowing in abnormal situations.

[0050] As a preferred embodiment, based on the above embodiment, further, a water absorbing body 6 is provided on the second joint 2 , and the water absorbing body 6 is used to absorb the residual liquid medicine on the third channel 21 .

[0051] After the second connector 2 is pulled out, the water-absorbing body 6 absorbs the residual liquid medicine on the third channel 21 to prevent the liquid medicine from spilling and polluting the environment, which is beneficial to keeping the ward clean. In this embodiment, the water-absorbing body 6 is a sponge.

[0052] As a preferred embodiment, based on the above embodiment, it further includes a blocking cover 7 , which is threadedly connected to the first joint 1 .

[0053] After the second joint 2 is pulled out, the blocking cover 7 is threadedly connected to the first joint 1 to prevent dust and reduce the risk of contamination of the first channel 11 .

[0054] As a preferred embodiment, on the basis of the above embodiment, a sealing gasket 8 is further provided in the sealing cover 7 .

[0055] The provision of the sealing gasket 8 seals the connection between the sealing cover 7 and the first plug 3 , further reducing the risk of contamination of the first channel 11 .

[0056] Example 2: See Figure 7As shown,

[0057] This embodiment also provides an indwelling needle, and the indwelling needle 100 adopts the above-mentioned connector assembly.

[0058] The output end 13 of the first connector 1 is connected to the indwelling needle tube of the indwelling needle 100 as a whole. In this way, after the second connector 2 is pulled out, blood overflow is avoided, and the reliability of the use of the indwelling needle 100 is improved.

[0059] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A joint assembly for preventing blood spillage, characterized in that: include: a first connector, the first connector including a first channel and a second channel, one end of the second channel being connected to the first channel and the other end being an output end, a plug being provided between the first channel and the second channel, the plug being slidable within the second channel, a spring being provided on a side of the plug facing away from the first channel, the plug is operable to isolate the first channel from the second channel under the action of the spring; a second joint, wherein a third channel is provided in the second joint, one end of the third channel being an input end and the other end extending through a side wall of the second joint, the outer wall size of the second joint being adapted to the size of the first channel, a fastener being slidably sleeved on the second joint, a retaining ring being provided on the second joint, the retaining ring being capable of abutting against the fastener, and the fastener being threadedly connected to the first joint; The fastener is rotated so that the thread on the fastener is screwed into the thread on the first joint, so that the second joint is inserted into the first channel, so that the second joint pushes the plug to move, so that the second channel is connected to the first channel, and so that the second channel is connected to the third channel.

2. The blood spill prevention connector assembly according to claim 1, wherein: One end of the plug abutting against the end surface of the second channel is tapered, corresponding to the tapered end surface of the second channel.

3. The blood spill prevention connector assembly according to claim 2, wherein: The outer circumferential size of the plug is adapted to the size of the second channel.

4. The blood spill prevention connector assembly according to claim 3, wherein: A countersunk hole is provided on one side of the plug abutting against the spring, and the size of the countersunk hole is adapted to the size of the spring.

5. The blood spill prevention connector assembly according to claim 4, characterized in that: The first joint is transparent.

6. The blood spill prevention connector assembly according to claim 5, wherein: The second joint is also provided with a water absorbing body, and the water absorbing body is used to absorb the residual liquid medicine on the third channel.

7. The blood spill prevention connector assembly according to claim 6, wherein: It also includes a blocking cover, which is threadedly connected to the first joint.

8. The blood spill prevention connector assembly according to claim 7, wherein: A sealing gasket is arranged in the sealing cover.

9. An indwelling needle, characterized in that: A blood spill-preventing joint assembly comprising the method according to any one of claims 1 to 8.

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