CN111388844A - A kind of medical pulse double cannula - Google Patents

Abstract

The invention discloses a medical pulse double cannula, belonging to the field of double cannulas. A medical pulse double cannula comprises a double cannula body with a plurality of drainage holes evenly drilled at the head and two bifurcated ports at the tail , a suction tube and a flushing tube inside the main body of the double casing, the suction tube is fixedly connected and communicated with one of the ports of the main body of the double casing, a leak-proof plug is provided near the other port of the main body of the double casing, and one end of the flushing tube passes through the main body of the double casing. Through the sliding hole drilled in the middle of the head of the main body of the double sleeve, the other end penetrates the leak-proof plug to the outside of the main body of the double sleeve, and a plurality of small holes corresponding to the drainage holes are drilled on the outer wall of the flushing pipe, so that the During the drainage flushing, the traditional continuous flushing method is changed, and the pulse flushing is adopted, so that the flushing salt water is accumulated and increased during the empty flushing time, and the flushing flow rate is increased, so that the flushing force of the drainage hole is increased, and the probability of the drainage hole being blocked is reduced.

Description

A kind of medical pulse double cannula

technical field

The present invention relates to the field of double sleeves, and more particularly, to a medical pulse double sleeve.

Background technique

Intestinal fistula refers to the abnormal passage between the gastrointestinal tract and other hollow organs, body cavity or outside the body cavity. The intestinal fistula penetrates the abdominal wall and communicates with the outside world, which is called enteroexternal fistula. , Prevention and treatment of abdominal sepsis, an important link to cure intestinal fistula, because the traditional application of latex tube drainage and cigarette drainage are passive drainage, the drainage effect is not good, so the abdominal cavity double cannula continuous irrigation negative pressure drainage method appeared.

The abdominal double cannula is composed of a double cannula body, an irrigation tube and a suction tube. The suction tube is soft and elastic, usually a latex tube. The inside of the main body is in a state of continuous negative pressure. The leakage is sucked into the main body of the double cannula through the drainage hole at the end of the main body of the double cannula and then discharged through the suction tube. The flushing tube is usually a plastic tube, which is thinner than the suction tube. The side wall of one end of the cannula body is penetrated and is usually connected with a saline bottle, which is used for outputting liquid to flush the drainage site to avoid clogging of the drainage hole.

However, with the continuous flushing and negative pressure drainage method, the intestinal fluid during drainage is very likely to block the drainage hole of the double cannula, which will affect the drainage effect. , Sometimes the double cannula must be replaced, so there are certain medical risks.

SUMMARY OF THE INVENTION

1. technical problem to be solved

In view of the problems existing in the prior art, the purpose of the present invention is to provide a medical pulsed double cannula, which can change the traditional continuous flushing mode during drainage and flushing, and adopt pulsed flushing, so that the flushing saline can be flushed within the empty flushing time. Accumulation increases, increasing the flow rate of one flush, thereby increasing the flushing force of the drainage hole, reducing the probability of the drainage hole being blocked.

2. Technical solutions

In order to solve the above problems, the present invention adopts the following technical solutions.

A medical pulse double cannula, comprising a double cannula body with a plurality of drainage holes evenly drilled at the head, two bifurcated ports at the tail, a suction tube and a flushing tube inside the double cannula body, the suction tube It is fixedly connected and communicated with one of the ports of the double-sleeve body, and a leak-proof plug is provided near the other port of the double-sleeve body. One end of the flushing pipe is drilled in the middle of the double-sleeve body head. The sliding hole, the other end penetrates through the leak-proof plug head and goes out to the outside of the double-sleeve main body, and the outer wall of the flushing pipe is drilled with a plurality of small holes corresponding to the drainage holes;

A saline bottle is connected to one end of the flushing tube away from the main body of the double sleeve, and a pulse device is installed between the flushing tube and the saline bottle, the pulse device controls the intermittent outflow of the liquid in the flushing tube to perform pulsed flushing.

Further, the pulse device includes a controller, a relay, a pressing device, and a first switch and a second switch respectively arranged on the pressing device, and the controller is preset with the first switch and the second switch respectively. When the first switch is turned on, the controller controls the first switch and the second switch to be turned on cyclically. When the first switch is turned on, the squeezing device works to squeeze the flushing tube to stop the liquid in it from flowing down. When the second switch is turned on, the squeezing device works. The pressure device works back to the original state, and the liquid in the flushing pipe flows normally.

Further, the extrusion device includes a casing, a push rod motor installed in the casing, and a roller rotatably connected to the output shaft of the push rod motor. When the first switch is turned on, the push rod motor extends and drives the roller to move, which can press the flushing tube to stop the liquid flowing out. When the second switch is turned on, the push rod motor shortens and drives the roller to move, releasing the The pressure on the flushing pipe causes the liquid to flow out, and one of the side walls of the casing along the length direction of the flushing pipe is inclined. The diameter of the tube, the roller moves up and down along the outer wall of the flushing tube, and cooperates with the inclined side wall to squeeze the flushing tube, thereby controlling the outflow of the liquid in the flushing tube.

Further, the suction tube is connected with the inner wall of the double-sleeve body in a smooth curve, so that the side of the suction tube away from the irrigation tube and the double-sleeve body forms an obtuse angle, so that the intestinal fluid entering the double-sleeve body can be smoothly guided to the double-sleeve body. In the suction tube, compared with the vertical connection, the curve between the main body of the double sleeve and the suction tube is smaller, and it is not easy to accumulate at the connection and cause blockage.

Further, the flushing tube is located between the outer part of the double-sleeve main body and the head of the double-sleeve main body and is connected with a disengagement structure, and the width of the anti-slip structure is smaller than the outer diameter of the double sleeve body in a natural state to facilitate insertion. , when the flushing pipe is pulled back near the leak-proof plug head, the anti-separation structure is opened, and its width is larger than the outer diameter of the double-sleeve main body to prevent disengagement, which is convenient for the positioning of the double-sleeve main body head in the human body, The main body of the double cannula is not easily prolapsed or the drainage position is changed.

Further, the anti-detachment structure includes a plurality of deformable strips fixedly connected between the main body of the double sleeve and the flushing tube, a limit ring and a silicone gasket fixed on the outer end of the flushing tube, the limit ring and the The distance between the silicone gaskets is equal to the thickness of the deformable strip. When the flushing tube is pulled back, the anti-detachment structure is opened. The silicone gasket is attached to the end of the main body of the double sleeve to effectively seal the gap between the flushing tube and the sliding hole.

Further, the deformable strip is a thin sheet of elastic material or an inflatable airbag strip.

Further, a positioning structure is provided at one end of the flushing pipe close to the leak-proof plug, and the positioning structure includes a pulling rope fixed on the outer wall of the flushing pipe and a positioning ring Tie the end away from the flush tube to the retaining ring.

Further, a prompt color circle is wrapped around the outer end of the flushing pipe, and the distance between the prompt color circle and one end of the flushing pipe close to the anti-dropping structure is equal to the length of the main body of the double sleeve, and the prompt color circle is used to indicate whether or not at this time. in a detachable state.

3. beneficial effect

Compared with the prior art, the advantages of the present invention are:

1. This solution can change the traditional continuous flushing method during drainage and flushing, and adopt pulse flushing, so that the flushing saline can be accumulated and increased during the empty flushing time, and the flushing flow rate can be increased, thereby increasing the flushing force of the drainage hole and reducing the drainage. The probability of the hole being blocked.

2. The anti-dropping structure is adopted, which does not affect the insertion of the double cannula body, and the expansion of the anti-dropping structure makes it difficult for the double cannula body to come off at will, improving the drainage effect of the double cannula body in the body.

3. The use of the positioning structure is convenient for fixing the unfolded state of the anti-detachment structure, which is beneficial to the continuous maintenance of the unfolded state.

Fourth, through the prompt color circle, the medical staff can be reminded whether the anti-dropping structure has reached the specified state at this time, which is beneficial to the medical staff to grasp the anti-dropping state at any time.

Description of drawings

Fig. 1 is the structural representation of the double casing main body of the present invention;

Fig. 2 is a structural representation at A in Fig. 1;

Fig. 3 is the structural representation at B in Fig. 1;

FIG. 4 is a schematic structural diagram of the anti-drop mechanism of the present invention when it is deployed;

Fig. 5 is the structural representation at C in Fig. 4;

FIG. 6 is a schematic structural diagram of the pulse device of the present invention.

Description of the labels in the figure:

1 double casing body, 1a drainage hole, 2 suction tube, 3 flushing tube, 4 leak-proof plug, 5 pulse device, 51 shell, 52 roller, 53 push rod motor, 6 anti-drop structure, 61 deformable strip, 62 Silicone gasket, 63 limit ring, 71 prompt color circle, 72 pull rope, 73 positioning ring.

Detailed ways

The following will combine the drawings in the embodiments of the present invention; the technical solutions in the embodiments of the present invention will be described clearly and completely; obviously; the described embodiments are only a part of the embodiments of the present invention; rather than all the embodiments, based on The embodiments of the present invention; all other embodiments obtained by those of ordinary skill in the art without creative work; all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the orientations shown in the accompanying drawings Or the positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "provided with", "sleeve/connection", "connection", etc., should be understood in a broad sense, such as " Connection", which can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal connection between two components. of connectivity. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1:

Please refer to Figures 1-6, a medical pulse double cannula, including a plurality of drainage holes 1a evenly drilled at the head, a double cannula body 1 with two bifurcated ports at the tail, a suction tube 2, and a double cannula in the double cannula. The flushing tube 3 inside the main body 1, the suction tube 2 is fixedly connected and communicated with one port of the double-sleeve body 1, and a leak-proof plug 4 is provided near the other port of the double-sleeve body 1, and one end of the flushing tube 3 passes through A sliding hole is drilled in the middle of the head of the double-sleeve main body 1, and the other end penetrates through the leak-proof plug 4 to the outside of the double-sleeve body 1. The outer wall of the flushing pipe 3 is drilled with a plurality of small holes corresponding to the drainage holes 1a. , when the flushing tube 3 is pulled back to the unfolded state of the anti-detachment structure 6, the small hole corresponds to the position of the drainage hole 1a, and the liquid sprayed from the small hole can flush the drainage hole 1a, that is, the small hole and the flushing tube 3 are close to the double sleeve The distance between one end of the head of the tube body 1 is not greater than the distance between the drainage hole 1a and the head of the double sleeve body 1, so that when the double sleeve is in the negative pressure suction state and the flushing state, all the small holes are in the double sleeve. the inside of the casing body 1;

Referring to FIG. 6 , a saline bottle is connected to one end of the flushing tube 3 away from the double-sleeve main body 1 , and a pulse device 5 is installed between the flushing tube 3 and the saline bottle. The pulse device 5 controls the intermittent outflow of the liquid in the flushing tube 3 to Pulse flushing, the pulse device 5 includes a controller, a relay, a squeezing device, and a first switch and a second switch respectively arranged on the squeezing device, and the opening duration of the first switch and the second switch are preset in the controller respectively. , the controller controls the first switch and the second switch to be turned on cyclically. When the first switch is turned on, the squeezing device works to squeeze the flushing tube 3 to stop the liquid flowing down. When the second switch is turned on, the squeezing device works and returns to the original state. When the liquid in the flushing pipe 3 flows normally.

The extrusion device includes a casing 51, a push rod motor 53 installed in the casing 51, and a roller 52 rotatably connected to the output shaft of the push rod motor 53. The flushing pipe 3 is inserted inside the casing 51, and the two sides of the outer end are respectively connected with the roller 52 and the roller 52. The inner wall of the casing 51 is in contact. When the first switch is turned on, the push rod motor 53 extends and drives the roller 52 to move. The roller 52 and the inner wall of the casing 1 press against the flushing pipe 3 to stop the liquid in the flushing pipe from flowing out. 3. The liquid is accumulated in the upper part of the extrusion device. When the second switch is turned on, the push rod motor 53 shortens and drives the roller 52 to move, releasing the pressure on the flushing pipe 3, the accumulated liquid flows out, and the casing 51 runs along the length of the flushing pipe 3. One of the side walls is inclined and arranged, the maximum distance between the roller 52 and this inclined side wall is greater than the diameter of the flushing pipe 3, and the minimum distance is less than the diameter of the flushing pipe 3, the roller 52 moves up and down along the outer wall of the flushing pipe 3, and the inclined sidewall The flushing tube 3 is squeezed by the cooperation, so as to control the outflow of the liquid in the flushing tube 3 .

Please refer to FIG. 1 , the suction tube 2 is connected to the inner wall of the double cannula main body 1 with a smooth curve, so that the side of the suction tube 2 away from the flushing tube 3 and the double cannula main body 1 is at an obtuse angle, so that the suction tube 2 is at an obtuse angle. The intestinal fluid can be smoothly guided into the suction tube 2. Compared with the vertical connection, the bend between the double cannula body 1 and the suction tube 2 is smaller, and it is not easy to accumulate at the connection and cause blockage.

Please refer to FIG. 2 , the flushing pipe 3 is connected with a disengagement structure 6 between the outer part of the double sleeve main body 1 and the head of the double sleeve main body 1 , and the width of the disengagement structure 6 is smaller than the outer diameter of the double sleeve main body 1 in a natural state. For ease of insertion, when the flushing pipe 3 is pulled back near the leak-proof plug head 4, the anti-detachment structure 6 is opened, and its width is larger than the outer diameter of the double-sleeve main body 1 to prevent it from falling off, which is convenient for the head of the double-sleeve main body 1 to be removed. The positioning in the human body makes it difficult for the double cannula body 1 to come out or the drainage position to change. The anti-drop structure 6 includes a plurality of deformable strips 61 fixedly connected between the double cannula body 1 and the flushing tube 3, which are fixed on the flushing tube. 3. The limit ring 63 and the silicone gasket 62 at the outer end, the distance between the limit ring 63 and the silicone gasket 62 is equal to the thickness of the deformable strip 61, when the flushing tube 3 is pulled back, the anti-detachment structure 6 opens, and the silicone gasket 62 is attached to the end of the main body 1 of the double sleeve to effectively seal the gap between the flushing tube 3 and the sliding hole. The deformable strip 61 is a thin sheet of elastic material or an inflatable airbag strip.

Referring to FIG. 3, a positioning structure is provided at one end of the flushing pipe 3 near the leak-proof plug 4. The positioning structure includes a pull rope 72 fixed on the outer wall of the flushing pipe 3 and a positioning ring 73 fixed on the outer end of the double sleeve body 1. The pull rope The end of 72 away from the flushing pipe 3 is tied on the positioning ring 73, and the outer end of the flushing pipe 3 is wrapped with a prompt color circle 71, and the distance between the prompt color circle 71 and the end of the flushing pipe 3 close to the anti-fall structure 6 is equal to the double sleeve body. The length of 1, the prompt color circle 71 is used to prompt whether it is in the anti-dropping state at this time. When it is in the anti-dropping state, the prompting color circle 71 is just located near the leak-proof plug 4.

This solution can change the traditional continuous flushing method during drainage and flushing, and adopt pulse flushing, so that the flushing salt water can be accumulated and increased during the empty flushing period, and the flushing flow rate of one flush can be increased, so that the flushing force of the drainage hole is increased, and the drainage hole is reduced. The probability of blockage; the anti-drop structure is adopted, which does not affect the insertion of the main body of the double cannula, and the expansion of the anti-drop structure makes the main body of the double cannula not easily dislodged at will, improving the drainage effect of the main body of the double cannula in the body; using the positioning structure It is convenient to fix the unfolded state of the anti-detachment structure, which is conducive to the continuous maintenance of the unfolded state; the color circle can prompt the medical staff whether the anti-detachment structure has reached the specified state at this time, which is conducive to the medical staff to grasp the anti-detachment state at any time. .

The above is only a preferred embodiment of the present invention; but the protection scope of the present invention is not limited to this; any person skilled in the art is within the technical scope disclosed by the present invention; according to the technical solution of the present invention equivalent replacements or changes to its improved ideas; all should be covered within the protection scope of the present invention.

Claims (10)

1. A medical pulse double cannula, comprising a double cannula body (1) with a plurality of drainage holes (1a) evenly drilled at the head, a double cannula body (1) provided with two bifurcated ports at the tail, a suction tube (2), and a double sleeve A flushing tube (3) inside the tube body (1), characterized in that the suction tube (2) is fixedly connected to and communicated with one of the ports of the double-cannulated body (1), and is close to the double-cannulated body (1) ) The other port is provided with a leak-proof plug (4), one end of the flushing pipe (3) passes through the sliding hole dug in the middle of the head of the double-sleeve body (1), and the other end passes through the leak-proof plug The plug head (4) protrudes out to the outside of the double sleeve body (1), and a plurality of small holes corresponding to the drainage holes (1a) are drilled on the outer wall of the flushing pipe (3); A saline bottle is connected to one end of the flushing pipe (3) away from the main body (1) of the double casing, and a pulse device (5) is installed between the flushing pipe (3) and the saline bottle. The pulse device (5) Control the intermittent outflow of liquid in the flushing pipe (3) to perform pulse flushing. 2 . The medical pulse double cannula according to claim 1 , wherein the pulse device ( 5 ) comprises a controller, a relay, a pressing device, and a first switch and a first switch respectively arranged on the pressing device. 3 . The second switch, the controller presets the opening durations of the first switch and the second switch respectively, the controller controls the first switch and the second switch to be turned on cyclically, and the pressing device works when the first switch is turned on Squeeze the flushing tube (3) to stop the flow of the liquid in it, and when the second switch is turned on, the pressing device works back to the original state, and the liquid in the flushing tube (3) flows normally at this time. 3 . The medical pulse double cannula according to claim 2 , wherein the extrusion device comprises a casing ( 51 ), a push rod motor ( 53 ) installed in the casing ( 51 ), and a push rod motor ( 53 ) rotatably connected in the casing ( 51 ) . The roller (52) of the output shaft of the push rod motor (53), the flushing pipe (3) is inserted into the inner side of the casing (51), and the two sides of the outer end are respectively in contact with the roller (52) and the inner wall of the casing (51). When the first switch is turned on, the push rod motor (53) extends and drives the roller (52) to move, which can press the flushing pipe (3) to stop the liquid from flowing out. When the second switch is turned on, the push rod motor (53) ) shortening drives the roller (52) to move, releasing the pressure on the flushing pipe (3), and the liquid flows out. The medical pulse double cannula according to claim 3, characterized in that, one of the side walls of the casing (51) along the length direction of the flushing tube (3) is inclined, and the roller (52) is connected to The maximum distance between the inclined side walls is larger than the diameter of the flushing pipe (3), and the minimum distance is smaller than the diameter of the flushing pipe (3). 5. A medical pulse double cannula according to claim 1, characterized in that the suction tube (2) is connected to the inner wall of the double cannula body (1) with a smooth curve, so that the suction tube (2) is kept away from flushing An obtuse angle is formed between one side of the pipe (3) and the main body (1) of the double sleeve. 6 . The medical pulse double cannula according to claim 1 , wherein the flushing tube ( 3 ) is located between the outer part of the double cannula body ( 1 ) and the head of the double cannula body ( 1 ). 7 . An anti-dropping structure (6) is connected. In a natural state, the width of the anti-dropping structure (6) is smaller than the outer diameter of the double-sleeve body (1) for easy insertion. The flushing pipe (3) is close to the leak-proof plug. When pulling back at the place (4), the anti-separation structure (6) is opened, and its width is larger than the outer diameter of the double-sleeve main body (1) to prevent it from coming off. 7 . The medical pulse double cannula according to claim 6 , wherein the anti-drop structure ( 6 ) comprises a plurality of A deformable strip (61), a limit ring (63) fixed on the outer end of the flushing tube (3), and a silicone gasket (62), between the limit ring (63) and the silicone gasket (62) The distance is equal to the thickness of the deformable strip (61). 8 . The medical pulse double cannula according to claim 7 , wherein the deformable strip ( 61 ) is a thin sheet of elastic material or an inflatable airbag strip. 9 . 9 . The medical pulse double cannula according to claim 1 , wherein a positioning structure is provided at one end of the flushing tube ( 3 ) close to the leak-proof plug ( 4 ). A pull rope (72) on the outer wall of the flushing pipe (3) and a positioning ring (73) fixed on the outer end of the double sleeve body (1), the end of the pull rope (72) away from the flushing pipe (3) is tied to the position Ring (73). 10 . The medical pulse double cannula according to claim 1 , wherein a prompt color circle ( 71 ) is wrapped around the outer end of the flushing tube ( 3 ), and the prompt color circle ( 71 ) is associated with the flushing tube ( 10 ). 11 . The distance between one end of the tube (3) close to the anti-falling structure (6) is equal to the length of the double sleeve body (1).

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