Buffer type anti-falling analgesia pump catheter connector

Abstract

The utility model discloses a buffer type anti-falling analgesia pump catheter connector which comprises a connector pipe sleeve formed by connecting an infusion sleeve and the end portion of a positioning end sleeve, a cylindrical liquid guide cavity is formed in the inner side of the infusion sleeve, and a liquid inlet communicated with the liquid guide cavity and connected with an infusion catheter is formed in one end of the infusion sleeve. A movable catheter coaxial with the liquid guide cavity is arranged in the liquid guide cavity, one end of the movable catheter penetrates through an inner hole of the positioning end sleeve, the diameter of the inner hole of the positioning end sleeve is smaller than that of the liquid guide cavity, the movable catheter is located at the outer end of the connector pipe sleeve and connected to the infusion catheter, and the movable catheter is located on a positioning ring on the periphery of the inner end of the liquid guide cavity. The infusion sleeve is similar to a syringe, and the silicone rubber piston is similar to a syringe piston, so that no matter which pipe section of the infusion sleeve the movable guide pipe drives the positioning ring to move to, liquid guided in from the liquid inlet cannot leak to the cavity, located on one side of the elastic component, of the liquid guide cavity, the structure is simple, and the design is reasonable.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a buffer-type anti-dropping analgesic pump catheter connector. Background Art

[0002] Analgesia pump is a liquid infusion device that can maintain a stable concentration of drugs in the blood, which can help achieve better analgesia with less drugs. Patients are usually allowed to press by themselves to add an additional infusion dose on the basis of the continuous infusion volume, so the treatment is more individualized, which is in line with the characteristics of large individual differences in pain perception. It can be used for postoperative analgesia, cancer pain, labor analgesia, etc.

[0003] In actual use, due to the portability of the pain pump, patients often move back and forth during treatment, so the catheter needle is often dragged or even pulled out, causing inconvenience to the pain treatment and medical staff. Once the needle falls off, it will cause liquid leakage and spillage contamination. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a buffer-type anti-dropping analgesic pump catheter connector to solve the problem that the catheter needle of the existing analgesic pump catheter mentioned in the above background technology is often dragged or even pulled out during use, thereby causing inconvenience to analgesic treatment and medical staff, and once the needle falls off, it will also cause liquid leakage and spillage pollution.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a buffer-type anti-dislocation analgesic pump catheter connector, which includes a connector sleeve composed of an infusion sleeve and a positioning end sleeve connected at the end, the infusion sleeve having a cylindrical liquid guide cavity on the inner side, one end of the infusion sleeve having a liquid inlet communicated with the liquid guide cavity and connected to the infusion catheter, the liquid guide cavity having a movable catheter coaxial therewith and one end of which is passed through the inner hole of the positioning end sleeve, and the inner hole diameter of the positioning end sleeve is smaller than the diameter of the liquid guide cavity, the movable catheter is located at the outer end of the connector sleeve and is connected to the infusion catheter, the inner end of the movable catheter has a positioning ring adapted to the inner diameter of the liquid guide cavity, the outer peripheral side of the positioning ring is provided with a silicone rubber piston that fits the inner wall of the liquid guide cavity, and the inner side of the liquid guide cavity is provided with an elastic component sleeved on the outer side of the movable catheter, one end of which abuts against the positioning end sleeve and the other end abuts against the positioning ring.

[0007] As a preferred solution of the buffer-type anti-dislocation analgesic pump catheter connector described in the utility model, a first catheter connector connected to the liquid inlet is fixed at one end of the infusion sleeve, and the outer end of the movable catheter has a second catheter connector corresponding to the first catheter connector.

[0008] As a preferred solution of the buffer-type anti-dropping analgesic pump catheter connector described in the utility model, the outer circle of the positioning end sleeve is also provided with a connecting groove, and the inner side of the connecting groove is provided with an external thread, and the positioning end sleeve is threadedly connected with the infusion sleeve through the connecting groove.

[0009] As a preferred solution of the buffer-type anti-dropping analgesic pump catheter connector described in the utility model, the outer peripheral side of the positioning ring also has an annular limiting groove 2 for positioning the silicone rubber piston.

[0010] As a preferred solution of the buffer-type anti-dropping analgesic pump catheter connector described in the utility model, the elastic component is a plastic spring.

[0011] As a preferred solution of the buffer-type anti-dropping analgesic pump catheter connector described in the utility model, the inner side of the positioning end sleeve is provided with an annular limiting groove, and the annular limiting groove is embedded with an anti-fouling pad which is fitted on the outer side of the movable catheter.

[0012] Compared with the prior art, the beneficial effect of the utility model is that when the buffer-type anti-dropout analgesic pump catheter connector is in use, when the catheter is dragged improperly, elastic stretching and extension will be formed between the connector sleeve and the movable catheter under the action of the elastic component. The greater the dragging force, the greater the buffering resistance, and vice versa. After feeling the dragging force of the catheter, the patient will correct it as soon as possible, and under the action of the elastic component, the connector sleeve and the movable catheter will return to their original position. During this process, the liquid is always located inside the connector sleeve and will not leak. Under the mutual cooperation, the problem of the needle loosening or even being pulled out after the catheter connector is dragged hard is effectively prevented or reduced, and the pollution caused by liquid leakage is avoided, which brings convenience to analgesic treatment and medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the utility model as a whole;

[0015] Figure 3 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0016] In the figure: 100, joint sleeve; 200, infusion sleeve; 2001, liquid guide cavity; 2002, liquid inlet; 210, first catheter joint; 300, positioning end sleeve; 3001, annular limit groove 1; 3002, connecting groove; 310, anti-fouling pad; 400, movable catheter; 410, positioning ring; 4101, annular limit groove 2; 420, silicone rubber piston; 430, second catheter joint; 500, elastic component. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0018] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1-Figure 3 The schematic diagram of the whole structure of a buffer type anti-dropping analgesic pump catheter connector of the utility model is shown. Figure 1-Figure 3 The present embodiment is a buffer type anti-dislocation analgesic pump catheter connector, comprising a connector sleeve 100 formed by connecting the ends of an infusion sleeve 200 and a positioning end sleeve 300, the inner side of the infusion sleeve 200 has a cylindrical liquid guide cavity 2001, one end of the infusion sleeve 200 has a liquid inlet 2002 that communicates with the liquid guide cavity 2001 and is connected to the infusion catheter, the interior of the liquid guide cavity 2001 has a movable catheter 400 that is coaxial with the liquid guide cavity 2001 and one end of which is inserted into the inner hole of the positioning end sleeve 300, and the inner hole diameter of the positioning end sleeve 300 is The movable catheter 400 is located at the outer end of the joint sleeve 100 and is connected to the infusion catheter. The inner end of the movable catheter 400 has a positioning ring 410 that is adapted to the inner diameter of the liquid guiding cavity 2001. The outer peripheral side of the positioning ring 410 is provided with a silicone rubber piston 420 that fits with the inner wall of the liquid guiding cavity 2001. The inner side of the liquid guiding cavity 2001 is provided with an elastic component 500 that is sleeved on the outer side of the movable catheter 400, and one end abuts against the positioning end sleeve 300 and the other end abuts against the positioning ring 410.

[0021] A first catheter connector 210 connected to the liquid inlet 2002 is fixed at one end of the infusion sleeve 200, and a second catheter connector 430 corresponding to the first catheter connector 210 is provided at the outer end of the movable catheter 400. Here, the first catheter connector 210 and the second catheter connector 430 are standard connectors for infusion catheters, making the installation and use of the catheter connector device and the infusion catheter more convenient.

[0022] The outer circle of the positioning end sleeve 300 also has a connecting groove 3002, and the inner side of the connecting groove 3002 has an external thread. The positioning end sleeve 300 is threadedly connected to the infusion sleeve 200 through the connecting groove 3002. The cooperation between the connecting groove 3002 and the internal and external threads of the thread makes it more convenient to disassemble and assemble the positioning end sleeve 300 and the infusion sleeve 200, as well as the device as a whole, which is conducive to mass production and disassembly and recycling.

[0023] The outer peripheral side of the positioning ring 410 also has an annular limiting groove 4101 for positioning the silicone rubber piston 420. Here, the infusion sleeve 200 is similar to the syringe, and the silicone rubber piston 420 is the same as the syringe piston. In this way, no matter which section of the infusion sleeve 200 the movable catheter 400 drives the positioning ring 410 to move, the liquid introduced by the liquid inlet 2002 will not leak into the chamber of the liquid guide cavity 2001 located on the side of the elastic component 500, and the structure is simple and the design is reasonable.

[0024] Furthermore, the elastic component 500 is a plastic spring. It can be understood that, compared with metal springs, plastic springs are inexpensive and suitable for disposable applications, which is conducive to later recycling or destruction.

[0025] Furthermore, the inner side of the positioning end sleeve 300 is provided with an annular limiting groove 3001, and the annular limiting groove 3001 is embedded with an anti-fouling pad 310 which is fitted on the outer side of the movable conduit 400. The anti-fouling pad 310 here can be a medical sponge. The anti-fouling pad 310 can be used to scrape and remove dust adhering to the outer side of the movable conduit 400 during the extension and retraction process, thereby ensuring the cleanliness of the inside of the joint sleeve 100 to the maximum extent.

[0026] In summary, the buffer-type anti-dislocation analgesic pump catheter connector of the present embodiment, when in use, directly connects the first catheter connector 210 and the second catheter connector 430 at both ends of the device to the end of the infusion catheter. When the catheter is dragged improperly, elastic stretching and extension will be formed between the connector sleeve 100 and the movable catheter 400 under the action of the elastic component 500. The greater the drag force, the greater the buffering resistance, and vice versa. After feeling the drag force of the catheter, the patient will correct it as soon as possible, and under the action of the elastic component 500, the connector sleeve 100 and the movable catheter 400 will return to their original position. During this process, the liquid is always located inside the connector sleeve 100 and will not leak. Under the cooperation of each other, the problem of the needle loosening or even being pulled out after the catheter connector is dragged hard is effectively prevented or reduced, thereby avoiding pollution caused by liquid leakage.

[0027] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A buffer-type anti-drop analgesic pump catheter connector, characterized in that: The invention comprises a joint sleeve (100) formed by connecting the ends of an infusion sleeve (200) and a positioning end sleeve (300), wherein the inner side of the infusion sleeve (200) has a cylindrical liquid guiding cavity (2001), one end of the infusion sleeve (200) has a liquid inlet (2002) which communicates with the liquid guiding cavity (2001) and is connected to the infusion catheter, the interior of the liquid guiding cavity (2001) has a movable catheter (400) which is coaxial with the liquid guiding cavity and one end of which is inserted into the inner hole of the positioning end sleeve (300), and the inner hole diameter of the positioning end sleeve (300) is smaller than the diameter of the liquid guiding cavity (2001). The movable catheter (400) is located at the outer end of the joint sleeve (100) and is connected to the infusion catheter. The inner end of the movable catheter (400) has a positioning ring (410) adapted to the inner diameter of the liquid guiding cavity (2001). The outer peripheral side of the positioning ring (410) is provided with a silicone rubber piston (420) that fits the inner wall of the liquid guiding cavity (2001). The inner side of the liquid guiding cavity (2001) is provided with an elastic component (500) that is sleeved on the outer side of the movable catheter (400) and abuts against the positioning end sleeve (300) at one end and abuts against the positioning ring (410) at the other end.

2. A buffer-type anti-dropout analgesic pump catheter connector according to claim 1, characterized in that: A first catheter connector (210) connected to the liquid inlet (2002) is fixed at one end of the infusion sleeve (200), and a second catheter connector (430) corresponding to and matching the first catheter connector (210) is provided at the outer end of the movable catheter (400).

3. The buffer-type anti-dropout analgesic pump catheter connector according to claim 1, characterized in that: The outer circle of the positioning end sleeve (300) is also provided with a connection groove (3002), and the inner side of the connection groove (3002) is provided with an external thread, and the positioning end sleeve (300) is threadedly connected to the infusion sleeve (200) via the connection groove (3002).

4. The buffer-type anti-dropout analgesic pump catheter connector according to claim 1, characterized in that: The outer peripheral side of the positioning ring (410) also has an annular limiting groove 2 (4101) for engaging and positioning the silicone rubber piston (420).

5. The buffer-type anti-dropout analgesic pump catheter connector according to claim 1, characterized in that: The elastic component (500) is a plastic spring.

6. The buffer-type anti-dropout analgesic pump catheter connector according to claim 1, characterized in that: The inner side of the positioning end sleeve (300) is provided with an annular limiting groove 1 (3001), and the annular limiting groove 1 (3001) is fitted with an anti-fouling pad (310) which is fitted on the outer side of the movable conduit (400).

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