Drainage tube

Abstract

The utility model provides a drainage tube which comprises an in-vivo section and an in-vitro section, the in-vivo section comprises an inner tube and an outer tube, at least two supporting ribs along the length direction of the drainage tube are arranged between the inner tube and the outer tube, and a notch along the length direction of the drainage tube is arranged on the outer tube between the adjacent supporting ribs. And no less than two through holes are formed in the side wall of the inner pipe between the adjacent supporting ribs. The drainage tube has the beneficial effects that by adopting the technical scheme, the tube drawing resistance of the drainage tube can be effectively reduced, human tissues are prevented from being embedded into the through holes in the drainage tube, the tube drawing operation is convenient and fast, and the pain of a patient is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a drainage tube for negative pressure drainage. BACKGROUND

[0002] The negative pressure drainage device is a kind of medical instrument widely used in medical field, mainly used for drainage after operation or trauma, to help patient to exclude the secretion such as blood, body fluid, pus etc. in body, to reduce the risk of infection, promote wound healing.

[0003] The main functional component of the negative pressure drainage device is the drainage tube, and the function of the drainage tube is to establish a channel between the closed human cavity (thoracic cavity, abdominal cavity, etc.) after operation and the outside world, to help patient to exclude the secretion such as blood, body fluid, pus etc. in body.The catheterization operation of drainage tube is usually carried out with puncture needle, the end of drainage tube is fixed with the tail of puncture needle, the puncture needle is inserted into human cavity from surgical incision, the drainage tube is led out by puncturing human tissue such as skin and muscle on one side of surgical incision, so that the two ends of drainage tube are located on the inside and outside of human body respectively.After drainage, the drainage tube is pulled out.

[0004] Due to the consideration of wound healing and prevention of drainage tube falling off, the incision formed by puncture needle penetrating the skin will not be too large, and the incision is generally in the form of a character, and the skin and muscle at the incision will clamp the drainage tube, which results in that the pulling-out resistance of the drainage tube is relatively large in the catheterization operation after being led out by puncture needle and drainage end, especially in the catheterization operation, generally no anesthetic is used, and the patient will be more painful.In addition, in order to facilitate drainage, a plurality of through holes will be provided on the side wall of the part of drainage tube inside human body, for being used for collecting the drainage liquid into the drainage tube.In practice, if the catheterization time of drainage tube is relatively long, there is a certain probability that human tissue such as fat will grow into the drainage tube along the through hole, which will greatly increase the pain of patient when the catheter is pulled out. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a drainage tube with simple structure and simple operation, which can effectively reduce the resistance when the drainage tube is pulled out and reduce the pain of patient.

[0006] The technical scheme of the utility model is:

[0007] A drainage tube, comprising an in-vivo segment and an extra-corporeal segment, the in-vivo segment comprising an inner tube and an outer tube, and at least two support ribs are arranged between the inner tube and the outer tube along the length direction of the drainage tube, a cut is arranged on the outer tube between adjacent support ribs along the length direction of the drainage tube, and at least two through holes are arranged on the side wall of the inner tube between adjacent support ribs.

[0008] Preferably, the support ribs are four, and the four support ribs are evenly arranged along the circumferential direction of the outer tube.

[0009] The utility model discloses a drainage tube is arranged as the double -deck structure of inner and outer tubes, is divided after being cut, and the support rib and outer tube form T type structure, and the drainage tube adopts soft material such as silica gel. When in the patient's body, the drainage tube is not under pressure, keeps the columnar structure, and the liquid of being drained enters between the inner and outer tubes from the cut, then enters the inner tube through the through hole, and is drained out of the patient's body. Because the block of outer tube, fat and other tissues do not grow into the through hole, prevent the tissue that the tube is pulled out and tears into the through hole to cause the pain of patient. When pulling out the tube, the in-vivo section is through the narrow cut, and the soft support rib is bent, and the drainage tube is deformed, thereby conforming to the shape of the cut, reducing the pulling resistance of the tube, and reducing the pain of the patient.

[0010] Two channels are arranged in the inner tube, and each channel is provided with not less than two through holes penetrating the side wall of the inner tube.

[0011] The double-channel arrangement of the inner tube provides the drainage tube with a flushing function. In clinical practice, some drainage sites need to be flushed with physiological saline or liquid medicine. One channel of the double-channel arrangement is used for negative pressure drainage, and the other channel is used for injecting flushing liquid into the drainage site.

[0012] The in-vivo section is provided with a marker line near the in-vivo section.

[0013] The marker line prevents the drainage tube from being pulled out too much and the in-vivo section from being pulled out of the body surface when the tube is placed.

[0014] The utility model has the advantages and positive effects that: due to the adoption of the above technical scheme, the pulling resistance of the drainage tube can be effectively reduced, the human tissue can be prevented from being embedded in the through hole of the drainage tube, the tube can be conveniently pulled out, and the pain of the patient can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the structural principle schematic diagram of the utility model

[0016] Figure 2 is the detail view of the end of the in-vivo section

[0017] Figure 3 is the end schematic view of the puncture needle connecting section

[0018] In the drawings:

[0019] 1, in-vivo section 2, ex-vivo section 3, marker line 4, puncture needle connection section 11, inner tube 12, outer tube 13, support rib 14, cutout 15, through hole DETAILED DESCRIPTION

[0020] As Figures 1-3 shown, the utility model:

[0021] A drainage tube comprises an in-vivo section 1 and an in-vitro section 2, the in-vivo section comprises an inner tube 11 and an outer tube 12, four support ribs 13 are arranged between the inner tube and the outer tube along the length direction of the drainage tube, the four support ribs are evenly arranged along the circumferential direction of the outer tube, the outer tube 12 between the adjacent support ribs 13 is provided with a cut 14 along the length direction of the drainage tube, and the side wall of the inner tube between the adjacent support ribs 13 is provided with not less than two through holes 15.

[0022] The inner tube 11 is provided with two channels, each channel is provided with not less than two through holes 15 penetrating the side wall of the inner tube.

[0023] The in-vitro section is provided with a mark line 3 close to the in-vivo section.

[0024] The in-vitro section of the drainage tube is provided with a puncture needle connecting section 4, and the puncture needle connecting section is in a circular tube shape.

[0025] The working process of the present example is as follows:

[0026] When the catheter is placed, the puncture needle connecting section is sleeved on the tail of the puncture needle, under the guidance of the puncture needle, the drainage tube penetrates the patient's body surface from inside to outside, the drainage tube is further pulled out, when the mark line reaches the body surface, the pulling of the drainage tube is stopped, the length of the in-vivo section is trimmed to a proper length, the puncture needle connecting section is cut off, the end part of the double channels of the inner tube is exposed, and the double channels are connected with a negative pressure device and a flushing device respectively, and the channel for flushing can be closed by a plug when not in use.

[0027] When the catheter is pulled out, the in-vivo section is pulled out through the in-vitro section of the drainage tube, when the in-vivo section passes through the incision of the body surface, the support ribs are deformed, so that the in-vivo section of the drainage tube conforms to the shape of the incision, thereby conveniently pulling out the drainage tube.

[0028] The above describes one embodiment of the present application in detail, but the content is only a preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

Claims

1. A drainage tube comprising an in vivo section and an ex vivo section, characterised in that: The in-vivo section comprises an inner tube and an outer tube, and not less than two supporting ribs are arranged between the inner tube and the outer tube along the length direction of the drainage tube; a cut is arranged on the outer tube between adjacent supporting ribs along the length direction of the drainage tube; and not less than two through holes are arranged on the side wall of the inner tube between adjacent supporting ribs.

2. The drainage tube of claim 1, wherein: The supporting ribs are four, and the four supporting ribs are evenly arranged along the circumferential direction of the outer tube.

3. The drainage tube of claim 1, wherein: Two channels are arranged in the inner tube, and each channel is provided with not less than two through holes penetrating the side wall of the inner tube.

4. The drainage tube of claim 1, wherein: The in-vitro section is provided with a mark line close to the in-vivo section.

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