A liquid-stopping clamp device for an indwelling needle

Abstract

The application discloses a remaining needle liquid-stopping clamp device and belongs to the technical field of medical devices, which comprises a remaining needle body, an infusion pipeline in communication with the remaining needle body, a first corrugated telescopic section and a second corrugated telescopic section which are arranged at intervals on the infusion pipeline, wherein the first corrugated telescopic section is located on the side close to the needle head of the remaining needle body; a plurality of first liquid-stopping pieces and second liquid-stopping pieces are fixedly arranged on the second corrugated telescopic section, the first liquid-stopping pieces and the second liquid-stopping pieces are arranged at intervals and staggered on the two sides of the second corrugated telescopic section, the inner ends of the first liquid-stopping pieces and the second liquid-stopping pieces are inserted into the inner channel of the second corrugated telescopic section, and the inner ends of the first liquid-stopping pieces and the second liquid-stopping pieces are separated from the inner wall of the second corrugated telescopic section to form a hole; and the clamp assembly and the elastic supporting assembly are simultaneously mounted on the second corrugated telescopic section. The device can conveniently close and open the liquid-stopping clamp, does not cause damage to the infusion pipeline, and makes the infusion process more smooth.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a liquid-stopping clamp device for an indwelling needle. Background Art

[0002] The indwelling needle stop clamp is an important component of the indwelling needle device. Its main function is to control the flow of liquid in the indwelling needle infusion pipeline. When the infusion needs to be suspended, by closing the stop clamp, blood can be prevented from flowing back into the infusion tube, and the liquid in the infusion bottle can also be prevented from continuing to be infused. The existing infusion stop clamp acts on the infusion pipeline in a mechanical way, forcing the infusion pipeline to deform, thereby blocking the flow channel. This method is likely to cause permanent deformation of the infusion pipeline. In some cases, the flow area of ​​the infusion pipeline is not easy to return to the state before clamping. After loosening the stop clamp, there will be a problem of poor infusion. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide an indwelling needle liquid stop clamp device, which can facilitate the closing and opening of the liquid stop clamp without causing damage to the infusion pipeline, making the infusion process smoother.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] 18. The liquid-stopping clamp device of claim 17, wherein the clamping member is configured to extend past the first and second ends of the channel to allow the channel to move forward and backward, and wherein the clamping member is configured to extend past the first and second ends of the channel to allow the channel to move forward and backward.

[0006] Furthermore, the clamping assembly includes a fixing ring, a screw, a guide rod, a clamping ring and a nut. The fixing ring is fixed to the end of the second corrugated telescopic section away from the needle head. The screw and the guide rod are installed on the fixing ring parallel to its axis. The first liquid-stopping plate and the second liquid-stopping plate are both provided with through holes for the screw and the guide rod to pass through. The clamping ring is slidably arranged on the outside of the guide rod, and the screw is connected to the nut after passing through the clamping ring.

[0007] Further, the elastic support assembly comprises support springs, and the support springs are arranged between adjacent two first liquid-stopping sheets, between adjacent two second liquid-stopping sheets, between the first liquid-stopping sheet and the fixing ring, and between the second liquid-stopping sheet and the compression ring.

[0008] Further, in the axial direction of the support spring, the diameter of the support spring is in a spiral shrinkage shape.

[0009] Further, the compression ring is coaxially and integrally connected with an extension cylinder, the inner side of the extension cylinder is threadedly connected with a rotating tube, the inner side of the rotating tube is provided with an annular groove, the outer side of the infusion pipeline is fixed with an annular protrusion which is rotationally matched with the annular groove, and the outer end of the rotating tube is fixed with an indication mark, and the indication mark corresponds to a mark which is arranged along the circumferential direction on the outer side of the infusion pipeline.

[0010] Further, the first liquid-stopping sheet and the second liquid-stopping sheet each comprise an elastic sheet body, and a plurality of elastic support sheets are uniformly and transversely arranged in the sheet body and extend along the vertical direction.

[0011] Further, the elastic support sheet is in a strip shape, the lower end of the sheet body is provided with an insertion slot for mounting the elastic support sheet, the elastic support sheet is inserted into the insertion slot, and at least part of the elastic support sheet extends to the outside of the second corrugated telescopic section.

[0012] Further, for the adjacent two first liquid-stopping sheets and second liquid-stopping sheets, the elastic support sheets on the first liquid-stopping sheet and the elastic support sheets on the second liquid-stopping sheet are transversely staggered with each other.

[0013] The beneficial effects of the present application are as follows:

[0014] The device disclosed in the present application can achieve the state of liquid stopping or infusion by axially clamping and releasing the liquid-stopping sheets, and the device is simple and will not directly affect the infusion pipeline, so that the later infusion is more smooth.

[0015] The device disclosed in the present application can achieve the state of liquid stopping or infusion by axially clamping and releasing the liquid-stopping sheets, and the device is simple and will not directly affect the infusion pipeline, so that the later infusion is more smooth.

[0016] In the device of the present invention, by simultaneously providing the first corrugated telescopic section, the expansion and contraction changes of the second corrugated telescopic section can be adapted, and no pulling will be caused on the infusion pipeline during expansion and contraction, thereby facilitating operation and ensuring the comfort of the patient during infusion.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0019] Figure 1 It is a structural schematic diagram of the liquid-stop clamp device of the present invention;

[0020] Figure 2 This is a structural diagram of the second corrugated expansion section when it is extended;

[0021] Figure 3 This is a schematic diagram of the structure when the second corrugated expansion section contracts;

[0022] Figure 4 Schematic diagram of the coordination between the first liquid-stopping piece and the second liquid-stopping piece;

[0023] Figure 5 Schematic diagram of the structure of the rotating tube;

[0024] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0025] The markings in the accompanying drawings are as follows: indwelling needle body 1, infusion pipe 2, first corrugated telescopic section 3, second corrugated telescopic section 4, first liquid-stopping plate 5, second liquid-stopping plate 6, fixing ring 7, screw 8, guide rod 9, clamping ring 10, nut 11, through hole 12, support spring 13, extension tube 14, rotating tube 15, annular groove 16, annular protrusion 17, indicator mark 18, sheet body 19, elastic support sheet 20. DETAILED DESCRIPTION

[0026] like Figures 1 to 6 As shown, the present invention discloses a liquid-stopping clamp device for an indwelling needle, comprising an indwelling needle body 1, an infusion pipe 2 connected to the indwelling needle body 1, and a first corrugated telescopic section 3 and a second corrugated telescopic section 4 are arranged at intervals on the infusion pipe 2. The first corrugated telescopic section 3 is located on the side close to the needle head of the indwelling needle body 1, and the second corrugated telescopic section 4 is located on the side away from the needle head of the indwelling needle body 1. Both the first corrugated telescopic section 3 and the second corrugated telescopic section 4 can be telescoped along the axial direction.

[0027] In this embodiment of the present invention, three first liquid-stopping plates 5 and three second liquid-stopping plates 6 are fixedly mounted on the second bellows expansion section 4. These plates are staggered and arranged on either side of the second bellows expansion section 4. For example, the three first liquid-stopping plates 5 are spaced apart on the upper side of the second bellows expansion section 4, while the three second liquid-stopping plates 6 are spaced apart on the lower side. A second liquid-stopping plate 6 is positioned between adjacent first liquid-stopping plates 5, and a first liquid-stopping plate 5 is positioned between adjacent second liquid-stopping plates 6. These plates are arranged in a staggered and spaced arrangement.

[0028] The liquid-stopping piece is rectangular as a whole. The inner ends of the first liquid-stopping piece 5 and the second liquid-stopping piece 6 both extend into the inner channel of the second corrugated telescopic section 4 and are separated from the inner wall of the second corrugated telescopic section 4 to form a hole. The lower side of the upper first liquid-stopping piece 5 extends into the second corrugated telescopic section 4 and at least exceeds the central axis of the second corrugated telescopic section 4. Similarly, the upper side of the lower second liquid-stopping piece 6 extends into the second corrugated telescopic section 4 and at least exceeds the central axis of the second corrugated telescopic section 4. In this way, the axial combined projection of the first liquid-stopping piece 5 and the second liquid-stopping piece 6 can cover the inner channel cross-section of the second corrugated telescopic section 4, that is, when each block of the first liquid-stopping piece 5 and the second liquid-stopping piece 6 is axially compressed and overlapped, the channel of the second corrugated telescopic section 4 can be closed to play a role in stopping liquid.

[0029] Furthermore, the present invention simultaneously installs a clamping assembly and an elastic support assembly on the second corrugated telescopic section 4. The clamping assembly is used to clamp the first liquid-stopping piece 5 and the second liquid-stopping piece 6 in the axial direction, and the elastic support assembly is used to separate the first liquid-stopping piece 5 and the second liquid-stopping piece 6 in the axial direction when the clamping assembly is released. During use of the device, when stopping liquid, the clamping assembly is used to clamp the first liquid-stopping piece 5 and the second liquid-stopping piece 6 in the axial direction, thereby closing the channel of the second corrugated telescopic section 4. When liquid circulation is required, the elastic support assembly is used to separate the first liquid-stopping piece 5 and the second liquid-stopping piece 6 in the axial direction when the clamping assembly is released. In the above manner, the device can be clamped and released without damaging the pipeline, thereby avoiding problems such as permanent deformation caused by direct clamping of the infusion pipeline 2, and increasing stability during infusion.

[0030] In this embodiment, the clamping assembly includes a fixing ring 7, a screw 8, a guide rod 9, a compression ring 10, and a nut 11. The fixing ring 7 is fixed to the end of the second bellows expansion section 4 away from the needle. The fixing ring 7 is coaxially fixed to the outside of the infusion tube 2. The screw 8 and guide rod 9 are mounted on the fixing ring 7 parallel to its axis, extending toward the needle. The first and second liquid-stopping plates 5 and 6 are both provided with through-holes 12 for the screw 8 and guide rod 9 to pass through. The compression ring 10 is slidably mounted on the outside of the guide rod 9. The screw 8 passes through the compression ring 10 and then connects to the nut 11. The guide rod 9 primarily serves as a guide. When the liquid-stopping plates need to be tightened, the nut 11 can be rotated. With the cooperation of the threads, the nut 11 can drive the compression ring 10 toward the side away from the needle, thereby gradually pressing the liquid-stopping plates together. This control method is simple and convenient to operate.

[0031] In this embodiment, the elastic support assembly includes a support spring 13, which is installed between two adjacent first liquid-stopping sheets 5, between two adjacent second liquid-stopping sheets 6, between the first liquid-stopping sheet 5 and the fixing ring 7, and between the second liquid-stopping sheet 6 and the clamping ring 10. By providing the support spring 13, when liquid circulation is required, the support spring 13 can promptly separate the first liquid-stopping sheet 5 and the second liquid-stopping sheet 6 along the axial direction when the clamping assembly is released, allowing the two ends of the support spring 13 to return to their original spacing, making the infusion process smoother.

[0032] In this embodiment, in the axial direction of the support spring 13, the diameter of the support spring 13 is in a spiral contraction shape, which can reduce the space occupied by the support spring 13 when it is compressed, so that the two adjacent liquid-stopping sheets can be more closely fitted, thereby preventing the flow of liquid.

[0033] In this embodiment, the compression ring 10 is coaxially and integrally connected to an extension tube 14. The inner side of the extension tube 14 is threadedly connected to a rotating tube 15. An annular groove 16 is formed on the inner side of the rotating tube 15. An annular protrusion 17 that rotates with the annular groove 16 is fixed to the outer side of the infusion pipe 2. An indicator mark 18 is fixed to the outer end of the rotating tube 15. Marks are provided along the circumference of the outer side of the infusion pipe 2 corresponding to the indicator mark 18. By providing the rotating tube 15, when the compression ring 10 is displaced, it can drive the rotating tube 15 to rotate. After the rotating tube 15 rotates, the indicator mark 18 aligns with different marks. The marks correspond to the degree of contraction of the second corrugated expansion section 4, thereby displaying different compression levels, which is convenient for the operator to operate and identify.

[0034] In this embodiment, both the first and second liquid-stopping plates 5 and 6 include an elastic plate body 19, which ensures a better seal between the plates. Several elastic support plates 20 are evenly spaced laterally within the plate body 19. These elastic support plates 20 extend vertically and possess a certain elastic preload, allowing the plates to deform appropriately after being compressed. This preload enhances the sealing effect between adjacent plates.

[0035] In this embodiment, the elastic support sheet 20 is in the shape of a long strip, and a slot for installing the elastic support sheet 20 is opened at the lower end of the sheet body 19. The elastic support sheet 20 is inserted into the slot, and at least part of the elastic support sheet 20 extends to the outside of the second corrugated expansion section 4, which can increase the deformation recovery ability of the liquid-stop sheet after it is released.

[0036] In this embodiment, for the two adjacent first liquid-stopping plates 5 and the second liquid-stopping plates 6, the elastic support plates 20 on the first liquid-stopping plates 5 and the elastic support plates 20 on the second liquid-stopping plates 6 are staggered laterally, which can increase the sealing ability of the first liquid-stopping plates 5 and the second liquid-stopping plates 6 after they are tightly fitted.

[0037] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A fluid-stopping clamp device for an indwelling needle, comprising an indwelling needle body and an infusion tube connected to the indwelling needle body, characterized in that: The infusion pipeline is provided with a first corrugated telescopic section and a second corrugated telescopic section at intervals, and the first corrugated telescopic section is located on the side where the needle head of the indwelling needle body is located; the second corrugated telescopic section is fixedly provided with a plurality of first liquid-stopping plates and a second liquid-stopping plate, and the first liquid-stopping plates and the second liquid-stopping plates are staggered and spaced apart on both sides of the second corrugated telescopic section, and the inner ends of the first liquid-stopping plates and the second liquid-stopping plates are both extended into the inner channel of the second corrugated telescopic section and are separated from the inner wall of the second corrugated telescopic section by a hole, and the axial combined projection of the first liquid-stopping plate and the second liquid-stopping plate can cover the inner channel cross-section of the second corrugated telescopic section; the second corrugated telescopic section is also installed with a clamping assembly and an elastic support assembly, and the clamping assembly is used to clamp the first liquid-stopping plate and the second liquid-stopping plate The sheet is clamped axially, and the elastic support assembly is used to separate the first liquid-stop sheet and the second liquid-stop sheet axially when the clamping assembly is loosened; the clamping assembly includes a fixing ring, a screw, a guide rod, a pressure ring and a nut, the fixing ring is fixed to the end of the second corrugated telescopic section away from the needle head, and the fixing ring is installed with a screw and a guide rod parallel to its axis, and the first liquid-stop sheet and the second liquid-stop sheet are simultaneously provided with through holes for the screw and the guide rod to pass through, the pressure ring is slidably arranged on the outside of the guide rod, and the screw is connected to the nut after passing through the pressure ring at the same time; the elastic support assembly includes a support spring, and support springs are installed between two adjacent first liquid-stop sheets, between two adjacent second liquid-stop sheets, between the first liquid-stop sheet and the fixing ring, and between the second liquid-stop sheet and the pressure ring.

2. The indwelling needle fluid-stopping clamp device according to claim 1, characterized in that: In the axial direction of the support spring, the diameter of the support spring is in a spiral contraction shape.

3. The indwelling needle fluid-stopping clamp device according to claim 1, characterized in that: The compression ring is coaxially and integrally connected to an extension tube, the inner side of the extension tube is threadedly connected to a rotating tube, an annular groove is provided on the inner side of the rotating tube, an annular protrusion that rotates with the annular groove is fixed to the outer side of the infusion pipe, an indicator mark is fixed to the outer end of the rotating tube, and a mark is provided on the outer side of the infusion pipe along the circumferential direction corresponding to the indicator mark.

4. The indwelling needle fluid-stopping clamp device according to any one of claims 1 to 3, characterized in that: The first liquid-stopping plate and the second liquid-stopping plate both include an elastic plate body, wherein a plurality of elastic support plates are evenly spaced apart in the horizontal direction and extend in the vertical direction.

5. The indwelling needle fluid-stopping clamp device according to claim 4, characterized in that: The elastic support piece is in the shape of an elongated strip. A slot for installing the elastic support piece is provided at the lower end of the piece body. The elastic support piece is inserted into the slot, and at least part of the elastic support piece extends to the outside of the second corrugated expansion section.

6. The indwelling needle fluid-stopping clamp device according to claim 5, characterized in that: For two adjacent first liquid-stopping sheets and second liquid-stopping sheets, the elastic supporting sheets on the first liquid-stopping sheets and the elastic supporting sheets on the second liquid-stopping sheets are staggered with each other in the transverse direction.

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