Liquid feeding connector and medical endoscope spraying device

Abstract

The utility model relates to the technical field of medical instruments, and provides a liquid feeding connector and a medical endoscope spraying device. The liquid feeding joint comprises a joint main body and a fastening sleeve; the connector body comprises a handheld section, a first fastening section and an adapter which are sequentially connected, the connector body is further provided with a fluid channel, the fluid channel sequentially penetrates through the handheld section, the first fastening section and the adapter, and the outer side of the adapter is configured to be sleeved with a target pipe body; the fastening sleeve comprises a second fastening section and a limiting section which are connected with each other, the second fastening section is arranged on the outer side of the first fastening section in a sleeving mode and detachably connected with the first fastening section, the limiting section is located on the outer side of the adapter, and the inner wall of at least part of the limiting section is configured to abut against the peripheral wall of a target pipe body arranged on the adapter in a sleeving mode; therefore, the target pipe body is prevented from being separated from the adapter. According to the liquid feeding connector, the liquid feeding connector can be conveniently assembled, the situation that the target pipe body is separated from the connector body under the action of external force can be prevented, and it is ensured that the target pipe body is reliably fixed to the connector body.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a liquid delivery connector and a medical endoscope spraying device. Background Technology

[0002] With the development of science and technology, endoscopes are increasingly used for detecting lesions and minimally invasive surgery in the human body. They can enter the stomach through the mouth or other natural orifices. An endoscope includes an operating section and an insertion section. The insertion section includes an insertion tube and a tip. The tip connects to the front end of the insertion tube, and the rear end of the insertion tube connects to the operating section. The tip includes a camera unit, an illumination unit, and a working channel. The instruments can extend along the working channel provided by the insertion tube to the front of the tip to sample or treat lesions.

[0003] In some applications, the injection handle is typically connected to the nozzle via a spray pipe. The injection handle controls the movement of the spray pipe within the working jaws, allowing the nozzle to extend to the front of the headstock or retract into it. The cleaning fluid enters the spray pipe through the injection handle and is then sprayed out through the nozzle to rinse the lens of the camera unit or the area to be inspected.

[0004] In practical applications, it has been found that due to the small diameter of the working channel of the endoscope, the diameter of the spray tube and nozzle must be smaller than the inner diameter of the working channel, making it difficult to fix the injection handle and the spray tube. In existing technology, the injection handle and the spray tube are connected using a fluid delivery connector. Specifically, the injection handle is connected to the spray tube via an adapter, and then a thermoplastic tube is used to cover the connection between the injection handle and the spray tube, thus providing a certain degree of reinforcement. However, since the thermoplastic tube requires a heat source to heat it for shrinkage and fixation, this fixing design is not only cumbersome to assemble, but also fails to effectively prevent the injection handle and the spray tube from detaching under external force. Utility Model Content

[0005] This utility model provides a liquid delivery connector and a medical endoscope spraying device to at least solve or improve the problems of cumbersome assembly and unreliable fixation of existing liquid delivery connectors.

[0006] In a first aspect, the present invention provides a liquid delivery connector, comprising: a connector body and a fastening sleeve; the connector body includes a handheld section, a first fastening section and an adapter connected in sequence, the connector body also having a fluid channel passing through the handheld section, the first fastening section and the adapter in sequence, and the outer side of the adapter being configured to accommodate a target tube.

[0007] The fastening sleeve includes a second fastening section and a limiting section connected to each other. The second fastening section is sleeved on the outside of the first fastening section and is detachably connected to the first fastening section. The limiting section is located on the outside of the adapter. At least a portion of the inner wall of the limiting section is configured to abut against the peripheral wall of the target tube sleeved on the adapter to prevent the target tube from detaching from the adapter.

[0008] According to the liquid delivery connector provided by this utility model, the inner diameter of the limiting section gradually decreases along the extension direction from the second fastening section to the limiting section.

[0009] The adapter has a plurality of skirts on its peripheral wall, and the plurality of skirts are arranged sequentially along the axial direction of the adapter. Each skirt extends circumferentially along the adapter and the diameter of the skirt gradually decreases along the extension direction from the first fastening section to the adapter.

[0010] When the target tube is fitted onto the peripheral wall of the adapter, the inner wall of the limiting section is in contact with the peripheral wall of the target tube corresponding to at least one of the skirt edges.

[0011] According to the present invention, the peripheral wall of the first fastening section is provided with an external thread, and the inner wall of the second fastening section is provided with an internal thread. The first fastening section and the second fastening section are threadedly connected by the internal thread and the external thread.

[0012] According to the present invention, the fastening sleeve further includes a protective section; one end of the protective section is connected to the end of the limiting section opposite to the second fastening section, and the target tube can pass through the second fastening section, the limiting section and the protective section in sequence.

[0013] According to the present invention, the axial length of the protective section is greater than the axial length of the limiting section.

[0014] According to the present invention, a liquid delivery connector is provided with a first operating part on the peripheral wall of the hand-held section. The first operating part is used to receive external force to drive the connector body to rotate relative to the fastening sleeve.

[0015] According to the present invention, a liquid delivery connector is provided, wherein the first operating part includes a plurality of protrusions, the plurality of protrusions are arranged circumferentially along the handle section, and each protrusion extends axially along the handle section.

[0016] According to the present invention, a liquid delivery connector is provided with a second operating part on the peripheral wall of the fastening sleeve. The second operating part is used to receive external force to drive the fastening sleeve to rotate relative to the connector body.

[0017] According to the present invention, a liquid delivery connector is provided, wherein the second operating part includes a hand-held surface, which is distributed in a planar shape.

[0018] In a second aspect, the present invention also provides a medical endoscope spraying device, including the liquid delivery connector as described above.

[0019] The liquid delivery connector and medical endoscope spraying device provided by this utility model, by configuring a connector body and a fastening sleeve for the liquid delivery connector, when applied to the docking of the target tube, can first place one end of the target tube onto the peripheral wall of the adapter corresponding to the connector body, and then assemble the second fastening section of the fastening sleeve and the first fastening section of the connector body into one piece. When the second fastening section is installed in place, the inner wall of the limiting section can abut against the peripheral wall of the target tube, thereby preventing the end of the target tube from detaching from the adapter. This design not only facilitates the assembly of the liquid delivery connector, but also prevents the target tube from detaching from the connector body under external force, ensuring the reliable fixation of the target tube on the connector body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the liquid delivery connector provided by this utility model.

[0022] Figure 2 This utility model provides Figure 1 A cross-sectional structural diagram.

[0023] Figure 3 This is a partially enlarged schematic diagram showing the contact between the inner wall of the limiting segment and the peripheral wall of the target tube provided by this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the connector body provided by this utility model.

[0025] Figure 5 This is a cross-sectional structural diagram of the fastening sleeve provided by this utility model.

[0026] Figure label:

[0027] 1. Connector body; 101. Fluid channel; 11. Handheld section; 12. First fastening section; 13. Adapter; 131. Skirt; 111. First operating part; 2. Fastening sleeve; 21. Second fastening section; 22. Limiting section; 23. Protective section; 211. Second operating part; 3. Target pipe body; 4. Nozzle. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] The following is combined with Figures 1-5 The liquid delivery connector and medical endoscope spraying device provided in the utility model embodiments are described in detail through specific implementation examples and application scenarios.

[0030] In the first aspect, such as Figure 1 , Figure 2 and Figure 4 As shown, this utility model embodiment provides a liquid delivery connector, including: a connector body 1 and a fastening sleeve 2;

[0031] The connector body 1 includes a handheld section 11, a first fastening section 12, and an adapter 13 connected in sequence. The connector body 1 also has a fluid channel 101, which passes through the handheld section 11, the first fastening section 12, and the adapter 13 in sequence. The outer side of the adapter 13 is configured to accommodate a target tube 3, for example, one end of the target tube 3 is fitted onto the peripheral wall of the adapter 13 to achieve communication with the fluid channel 101.

[0032] The fastening sleeve 2 includes a second fastening section 21 and a limiting section 22 connected to each other. The second fastening section 21 is sleeved on the outside of the first fastening section 12 and is threadedly connected to the first fastening section 12. The limiting section 22 is located on the outside of the adapter 13. At least part of the inner wall of the limiting section 22 abuts against the peripheral wall of the target tube 3 to prevent the target tube 3 from detaching from the adapter 13.

[0033] Understandably, the target tube 3 can be a plastic or silicone tube with a certain degree of elasticity. One end of the target tube 3 is fitted onto the peripheral wall of the adapter 13 with an interference fit, and the other end of the target tube 3 is connected to the nozzle 4. The diameter of the target tube 3 and the diameter of the nozzle 4 are approximately the same to ensure that the target tube 3 and the nozzle 4 can move freely in the working channel of the endoscope.

[0034] Since one end of the target tube 3 is fitted onto the peripheral wall of the adapter 13, under the action of the adapter 13, a bulge will appear on the side wall of the target tube 3 corresponding to the adapter 13. The bulge can be hemispherical, triangular, or annular. When the second fastening section 21 is fitted onto the outside of the first fastening section 12, at least part of the inner wall of the limiting section 22 will abut against the bulge on the peripheral wall of the target tube 3 to prevent the target tube 3 from moving toward the side away from the adapter body 1.

[0035] For the first fastening section 12 of the connector body 1 and the second fastening section 21 of the fastening sleeve 2, the first fastening section 12 and the second fastening section 21 can be assembled together by means of snap-fit ​​connection or threaded connection. For example, as Figure 2 , Figure 4 and Figure 5 As shown, in order to facilitate reliable installation of the fastening sleeve 2, the peripheral wall of the first fastening section 12 is provided with external threads, and the inner wall of the second fastening section 21 is provided with internal threads. The first fastening section 12 and the second fastening section 21 are threadedly connected through the internal threads and the external threads.

[0036] like Figure 2 As shown, for the connector body 1, the fluid channel 101 of the connector body 1 includes a first channel segment, a second channel segment and a third channel segment connected in sequence. The first channel segment is formed in the handheld section 11, the second channel segment is formed in the first fastening section 12 and the third channel segment is formed in the adapter 13. The inner diameters of the first channel segment, the second channel segment and the third channel segment decrease in sequence.

[0037] The end of the handheld section 11 opposite to the first fastening section 12 may be provided with a Luer connector, which can be detachably connected to other syringes or injection lines with Luer connectors.

[0038] The liquid delivery connector provided by this utility model, by configuring a connector body 1 and a fastening sleeve 2, when applied to the docking of a target tube 3, can first place one end of the target tube 3 onto the peripheral wall of the adapter 13 corresponding to the connector body 1, and then insert the other end of the target tube 3 into the fastening sleeve 2, controlling the fastening sleeve 2 to move towards the connector body 1. When the fastening sleeve 2 reaches the position of the connector body 1, the second fastening section 21 of the fastening sleeve 2 and the first fastening section 12 of the connector body 1 are assembled into one unit. When installed in place, the inner wall of the limiting section 22 can abut against the peripheral wall of the target tube 3, thereby preventing the end of the target tube 3 from detaching from the adapter 13. This design not only facilitates the assembly of the liquid delivery connector, but also prevents the target tube 3 from detaching from the connector body 1 under external force, ensuring the reliable fixation of the target tube 3 on the connector body 1. In other words, the liquid delivery connector shown in this utility model can effectively solve or improve the problems of cumbersome operation and unreliable fixation in the existing design for fixing the liquid injection handle and spray pipe.

[0039] In some embodiments, such as Figure 2 and Figure 3 As shown, the peripheral wall of the adapter 13 has multiple skirts 131, which are arranged sequentially along the axial direction of the adapter 13. Each skirt 131 extends circumferentially along the adapter 13. The diameter of the skirt 131 gradually decreases along the extension direction from the first fastening section 12 to the adapter 13. This design makes the adapter 13 form a pagoda-shaped connector. Specifically, the peripheral wall of the adapter 13 may be provided with two annular skirts 131.

[0040] like Figure 3 and Figure 5 As shown, for the limiting section 22 of the connector body 1, along the extension direction from the second fastening section 21 to the limiting section 22, the inner diameter of the limiting section 22 gradually decreases, that is, a frustum-shaped channel adapted to the peripheral wall of the target tube body 3 is formed within the limiting section 22; wherein, the inner diameter of the limiting section 22 is within Figure 5 The letter "D" is used to represent it.

[0041] like Figure 3 As shown, when the target tube 3 is fitted onto the peripheral wall of the adapter 13, the inner wall of the limiting section 22 is in contact with the peripheral wall of the target tube 3 corresponding to at least one skirt 131. According to Figure 3As can be seen from the cross-sectional view, under the constraint of the skirt 131, the peripheral wall of the target tube 3 corresponding to the skirt 131 is inclined, and the inner wall of the limiting section 22 is also inclined. Thus, the relative wall surfaces of the limiting section 22 and the target tube 3 are fitted with inclined surfaces. If a pulling force is applied to the target tube 3 toward the side away from the connector body 1, the limiting section 22 will exert a resisting force on the target tube 3 toward the connector body 1 to avoid the situation where the connector body 1 and the target tube 3 separate.

[0042] Meanwhile, since the peripheral wall of the adapter 13 has multiple skirts 131, not only is there a beveled fit between the relative wall surfaces of the limiting section 22 and the target tube 3 corresponding to one skirt 131, but the end of the limiting section 22 will also abut against the outer wall of the target tube 3 corresponding to another skirt 131, thereby effectively preventing the end of the target tube 3 from detaching from the adapter 13 of the connector body 1.

[0043] Of course, in practical applications, for each skirt 131 of the peripheral wall of the adapter 13, along the extension direction from the first fastening section 12 to the adapter 13, the diameter of each skirt 131 can also be configured in a gradient decreasing manner. Then, when the second fastening section 21 of the fastening sleeve 2 and the first fastening section 12 of the connector body 1 are assembled, the inner wall of the limiting section 22 can be made to be inclined with the target tube 3 corresponding to each skirt 131, so as to effectively prevent the end of the target tube 3 from detaching from the adapter 13 of the connector body 1.

[0044] In some embodiments, such as Figure 5 As shown, the angle between the extension direction of the inner wall of the limiting segment 22 and the central axis of the limiting segment 22 is α, and the size of α is 8º to 15º. For example, the size of α can be 8º, 11º, 13º or 15º.

[0045] In some embodiments, such as Figure 2 and Figure 5 As shown, the fastening sleeve 2 also includes a protective section 23; one end of the protective section 23 is connected to the end of the limiting section 22 that is away from the second fastening section 21, and the target tube 3 can pass through the second fastening section 21, the limiting section 22 and the protective section 23 in sequence.

[0046] Understandably, the protective section 23 protects the part of the target tube 3 that is close to the connector 13, preventing this part from bending at a large angle relative to the end of the target tube 3, which would cause the end of the target tube 3 to detach from the connector 13.

[0047] For example, the axial length of the protective section 23 is greater than the axial length of the limiting section 22, and the inner diameter of the protective section 23 is greater than the diameter of the target pipe body 3. Specifically, the inner diameter of the protective section 23 is greater than the inner diameter of the end of the limiting section 22 facing the protective section 23.

[0048] In some embodiments, such as Figure 1 and Figure 4 As shown, the peripheral wall of the handheld section 11 is provided with a first operating part 111. The first operating part 111 can be a protruding structure or a groove structure. The first operating part 111 is used to receive external force to drive the connector body 1 to rotate relative to the fastening sleeve 2, so as to realize the threaded connection between the second fastening section 21 of the fastening sleeve 2 and the first fastening section 12 of the connector body 1.

[0049] For example, the first operating part 111 includes a plurality of protrusions arranged circumferentially along the handle section 11, and each protrusion extends axially along the handle section 11. This design facilitates the operator to move the protrusions circumferentially, thereby controlling the rotation of the connector body 1 relative to the fastening sleeve 2.

[0050] Two protrusions can be provided, and the two protrusions are arranged symmetrically with respect to the central axis of the handheld section 11.

[0051] In some embodiments, such as Figure 1 As shown, the peripheral wall of the fastening sleeve 2 is provided with a second operating part 211. The second operating part 211 is used to receive external force to drive the fastening sleeve 2 to rotate relative to the connector body 1, so as to realize the threaded connection between the second fastening section 21 of the fastening sleeve 2 and the first fastening section 12 of the connector body 1.

[0052] Multiple second operating parts 211 can be provided, and multiple second operating parts 211 are arranged sequentially along the circumferential direction on the peripheral wall of the fastening sleeve 2.

[0053] For example, the second operating part 211 may be disposed on the peripheral wall of the second fastening section 21. The second operating part 211 includes a hand-held surface that is distributed in a planar shape. This design makes it convenient for the operator to press the second operating part 211 with their fingers so that when installing the fastening sleeve 2, only the joint body 1 is controlled to rotate, while the fastening sleeve 2 is prevented from rotating.

[0054] In the second aspect, such as Figure 1 and Figure 2 As shown, this embodiment of the invention also provides a medical endoscope spraying device, including the liquid delivery connector as described above. For example, the medical endoscope spraying device includes an injection handle and a spray tube. The injection handle can be constructed as the connector body structure shown in the above embodiment. One end of the spray tube is sleeved on the adapter of the injection handle, and the other end of the spray tube is connected to the nozzle 4. In this way, based on the cooperation between the injection handle and the fastening sleeve, the spray tube can be fixed between the injection handle and the fastening sleeve, which can prevent the spray tube from detaching from the adapter of the injection handle and realize the communication between the fluid channel of the injection handle and the spray tube.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A liquid delivery connector, characterized in that, The utility model relates to a liquid feeding connector, comprising: a connector body and a fastening sleeve; the connector body comprises a hand-holding section, a first fastening section and an adapter in sequence, and further has a fluid channel penetrating through the hand-holding section, the first fastening section and the adapter in sequence, and the outer side of the adapter is configured to be sleeved with a target pipe body; the fastening sleeve comprises a second fastening section and a limiting section connected in sequence, the second fastening section is sleeved on the outer side of the first fastening section and detachably connected with the first fastening section, and the limiting section is located on the outer side of the adapter, and the inner wall of at least part of the limiting section is configured to abut against the peripheral wall of the target pipe body sleeved on the adapter to prevent the target pipe body from being separated from the adapter.

2. The liquid delivery fitting of claim 1, wherein, The inner diameter of the limiting section gradually decreases along the extension direction of the second fastening section to the limiting section; the peripheral wall of the adapter has a plurality of skirts, and the plurality of skirts are arranged in sequence along the axial direction of the adapter, and each skirt extends along the peripheral direction of the adapter, and the diameter of the skirt gradually decreases along the extension direction of the first fastening section to the adapter; in the case that the target pipe body is sleeved on the peripheral wall of the adapter, the inner wall of the limiting section is in close contact with the peripheral wall of the target pipe body corresponding to at least one skirt.

3. The liquid delivery fitting of claim 1, wherein, the peripheral wall of the first fastening section is provided with external threads, the inner wall of the second fastening section is provided with internal threads, and the first fastening section and the second fastening section are threadedly connected through the internal threads and the external threads.

4. The liquid delivery fitting of claim 1, wherein, the fastening sleeve further comprises a protection section, one end of the protection section is connected with one end of the limiting section away from the second fastening section, and the target pipe body can pass through the second fastening section, the limiting section and the protection section in sequence.

5. The liquid delivery fitting of claim 4, wherein, the axial length of the protection section is greater than the axial length of the limiting section.

6. The liquid feed adapter of any one of claims 1 to 5, wherein, the peripheral wall of the hand-holding section is provided with a first operation part for accepting external force to drive the connector body to rotate relative to the fastening sleeve.

7. The liquid delivery fitting of claim 6, wherein, the first operation part comprises a plurality of protrusions arranged along the peripheral direction of the hand-holding section, and each protrusion extends along the axial direction of the hand-holding section.

8. The liquid delivery fitting of claim 6, wherein, the peripheral wall of the fastening sleeve is provided with a second operation part for accepting external force to drive the fastening sleeve to rotate relative to the connector body.

9. The liquid delivery fitting of claim 8, wherein, the second operation part comprises a hand-holding surface distributed in a planar shape.

10. A medical endoscope spraying device, characterized by, The utility model relates to a liquid feeding connector, comprising: any one of claims 1 to 9.

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