Water stop clamp for remaining needle

Abstract

A remaining needle water stop clamp is integrally in a C shape and comprises a left portion, a middle portion and a right portion which are sequentially fixed together, a left through hole is formed in the left portion, a right through hole is formed in the right portion, a hose can pass through the left through hole and the right through hole, a guide tube is fixed to the inner wall of the left portion, and the axis of the guide tube coincides with the axis of the left through hole. Compared with the prior art, the hose fixing device has the technical effects that the guide tube is arranged, so that the radial direction of the hose is restrained, the hose can be prevented from deviating, and the hose can be conveniently blocked by the clamping block.

Description

Technical Field

[0001] The utility model belongs to disposable medical equipment, in particular to a water-stop clamp for an indwelling needle. Background Art

[0002] At present, intravenous catheters are widely used in clinical practice. Intravenous catheters are generally composed of a needle assembly, a catheter assembly, a hose, a water stop clamp, an end cap, a color tee and a heparin cap or a positive pressure connector. The intravenous catheter uses a water stop clamp to close the hose. The water stop clamp can be found in the CN107335110A patent document.

[0003] In clinical practice, because the two through holes of the water stop clamp (i.e., the left through hole 3a and the right through hole 3c in the document) are relatively thick, the hose may swing left and right, causing the hose to deviate and the locking block to fail to lock. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to design a water-stop clamp for an indwelling needle to prevent the hose from deviating.

[0005] The technical solution of the utility model is specifically as follows:

[0006] A water-stop clamp for an indwelling needle is in a "C" shape as a whole, and includes a left part, a middle part, and a right part fixed together in sequence. The left part is provided with a left through hole, and the right part is provided with a right through hole. The left through hole and the right through hole are used for the passage of a hose. A guide tube is fixed on the inner wall of the left part, and the axis of the guide tube coincides with the axis of the left through hole.

[0007] The guide tube and the hose are interference fit or clearance fit.

[0008] The left through hole is a speaker hole that is larger on the outside and smaller on the inside.

[0009] The clamping block A is fixed in the middle, and the clamping block B is fixed on the right. The clamping block A and the clamping block B are used to clamp the hose.

[0010] The free ends of the left part and the right part are both provided with locking parts.

[0011] The locking piece of the left part is a hook, and the locking piece of the right part is a protrusion. When the protrusion enters the hook, the locking of the free ends of the left part and the right part is completed.

[0012] The indwelling needle water-stop clamp body and the guide tube are integrally formed plastic parts.

[0013] Compared with the prior art, the technical effect of the utility model is that the utility model is provided with a guide pipe, which constrains the radial direction of the hose, can prevent the hose from deviating, and facilitates the clamping block to block the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the utility model.

[0016] Figure 3 This is a cross-sectional diagram when in use. DETAILED DESCRIPTION

[0017] The utility model is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figure 1-2 A water-stop clamp for an indwelling needle is in a "C" shape as a whole, and includes a left part 10, a middle part 20, and a right part 30 fixed together in sequence. The left part 10 is provided with a left through hole 12, and the right part 30 is provided with a right through hole 33. The left through hole 12 and the right through hole 33 are used for the passage of a hose.

[0019] like Figure 1-2 A guide tube 13 is fixed on the inner wall of the left portion 10 , and the axis of the guide tube 13 coincides with the axis of the left through hole 12 .

[0020] like Figure 3 In order to limit the hose as much as possible, the guide tube 13 and the hose 90 are interference fit or clearance fit. Considering that interference fit will affect the passage of medicine, clearance fit is given priority.

[0021] like Figure 3 During the transfer, in order to facilitate the hose 90 to pass through the left through hole 12 and the guide tube 13, the left through hole 12 is a trumpet hole that is larger on the outside and smaller on the inside. In this way, the hose 90 can enter the hollow part 14 of the guide tube 13 from one side of the left through hole 12.

[0022] like Figure 1-2 The middle part 20 fixes the clamping block A21, and the right part 30 fixes the clamping block B32. The clamping block A21 and the clamping block B32 are used to clamp the hose.

[0023] like Figure 1-2 The free ends of the left part 10 and the right part 30 are both provided with locking parts for determining whether "the clamping block A21 and the clamping block B32 are working".

[0024] like Figure 1-2 The locking member of the left part 10 is a hook 11, and the locking member of the right part 30 is a protrusion 31. When the protrusion 31 enters the hook 11, the locking of the free ends of the left part 10 and the right part 30 is completed.

[0025] For the convenience of manufacturing, the indwelling needle water-stop clamp body and the guide tube 13 are integrally formed plastic parts.

[0026] Its working principle is:

[0027] like Figure 1-3 When the liquid medicine is flowing, Figure 3 , the free ends of the left part 10 and the right part 30 are in a loose state, and the medicine in the hose 90 can flow normally.

[0028] When water stopping is required, the protrusion 31 is inserted into the hook 11, the free ends of the left part 10 and the right part 30 are locked together, and the hose 90 is clamped flat by the clamping block A21 and the clamping block B32, so that the liquid medicine cannot pass.

[0029] Features of this application:

[0030] S1. The utility model is provided with a guide tube, which constrains the radial direction of the hose and can prevent the hose from moving left and right ( Figure 3 The clamping block deviates from the set position by swinging in the vertical screen direction, making it easier for the clamping block to block the hose.

[0031] S2. The left through hole 12 is a trumpet hole that is larger on the outside and smaller on the inside. In this way, the hose 90 can enter the hollow portion 14 of the guide tube 13 from one side of the left through hole 12, which facilitates assembly.

[0032] For other contents, please refer to the prior art.

[0033] The above-described embodiments are only preferred embodiments of the present invention. It should be noted that those skilled in the art may make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as within the protection scope of the present invention.

Claims

1. A water-stop clamp for an indwelling needle, which is in a "C" shape as a whole and comprises a left portion (10), a middle portion (20), and a right portion (30) which are fixed together in sequence, wherein the left portion (10) is provided with a left through hole (12), and the right portion (30) is provided with a right through hole (33), and the left through hole (12) and the right through hole (33) are used for a hose to pass through, and the characteristics are: A guide tube (13) is fixed on the inner wall of the left portion (10), and the axis of the guide tube (13) coincides with the axis of the left through hole (12).

2. The water-stop clamp for an indwelling needle according to claim 1, characterized in that: The guide tube (13) and the hose (90) are interference fit or clearance fit.

3. The water-stop clamp for an indwelling needle according to claim 1, characterized in that: The left through hole (12) is a horn hole that is larger on the outside and smaller on the inside.

4. The water-stop clamp for an indwelling needle according to claim 1, characterized in that: The middle part (20) is fixed with a clamping block A (21), and the right part (30) is fixed with a clamping block B (32). The clamping block A (21) and the clamping block B (32) are used to clamp the hose (90).

5. The indwelling needle water stop clamp according to claim 1, characterized in that: The free ends of the left part (10) and the right part (30) are both provided with locking parts.

6. The water-stop clamp for an indwelling needle according to claim 5, characterized in that: The locking element of the left part (10) is a hook (11), and the locking element of the right part (30) is a protrusion (31). When the protrusion (31) enters the hook (11), the locking of the free ends of the left part (10) and the right part (30) is completed.

7. The water-stop clamp for an indwelling needle according to claim 5, characterized in that: The indwelling needle water-stop clamp body and the guide tube (13) are integrally formed plastic parts.

Images