CN218305801U - Abdominal drainage double cannula - Google Patents

Abstract

The utility model provides an abdominal cavity drainage double-cannula, which comprises a drainage inner cannula, a rotary connection seat, a connecting tube, a drainage outer cannula, a connecting seat, a water seat, a medicine seat and a clamp type ultrasonic flow monitoring device; the drainage inner sleeve and the drainage outer sleeve which are detachably separated from each other in the abdominal drainage double-sleeve can be used for drawing out the blocked drainage inner sleeve and discarding the blocked drainage inner sleeve and replacing a new drainage inner sleeve when the drainage inner sleeve is blocked so as to ensure that the drainage of a patient is smooth; the water seat and the medicine seat can be used for washing the abdominal cavity by dropping physiological saline or liquid medicine; the clamp type ultrasonic flow monitoring device is arranged on the connecting pipe, so that the flow of the drainage liquid in the connecting pipe can be monitored in real time, and corresponding reminding and alarming can be given when the double sleeves are blocked; the double-cannula for the abdominal drainage can prevent the blockage of the double-cannula, reduce the monitoring workload of medical staff to a patient who keeps the double-cannula, reduce the occurrence of complications of the double-cannula, and more importantly, reduce the pain of the patient who needs to keep the double-cannula again for operation due to the blockage of the double-cannula.

Description

Abdominal drainage double cannula

The technical field is as follows:

the utility model relates to a surgical drainage apparatus technical field, concretely relates to abdominal cavity drainage double cannula.

Background art:

after a patient undergoes abdominal cavity viscera operation (such as operations on viscera parts of liver, biliary tract, pancreas, stomach and intestine, and the like), blood, body fluid, pus and the like in abdominal cavity gaps and viscera tissues are generally required to be discharged to the outside of the body through a surgical drainage indwelling drainage tube, the double-sleeve is a common choice for the patient, and particularly when the patient has abdominal cavity infection and intestinal fistula, the double-sleeve is utilized to slowly drip physiological saline into the patient to flush the abdominal cavity, and meanwhile, a small amount of negative pressure is adopted to keep a continuous low negative pressure state on the double-sleeve, and the physiological saline dripped into the abdominal cavity, the blood, the pus, inflammatory exudate, bile, secretion and the like in the abdominal cavity are drained out of the body of the patient.

Although the currently used abdominal drainage double cannula can achieve the purpose of drainage, the most common clinical problem is that the double cannula is easily blocked by drainage liquid, pus or fine tissues in the using process, so that the drainage effect cannot be expected; in the flushing process, if the double-cannula blockage is not found, infectious body fluid is retained after the double-cannula blockage, partial necrosis and abscess in the abdominal cavity of a patient are easily formed, and infected objects can corrode to aggravate digestive tract fistula and even cause bleeding risk; meanwhile, if the normal saline dripped into the abdominal cavity cannot be discharged out of the body in time, the abdominal cavity infection can be spread, and more serious complications are caused; the unobstructed drainage of the double cannula is therefore crucial for the patient; clinically, the drainage monitoring of a patient who uses the double-casing pipe needs great energy, manpower and material resources, and the smoothness degree of the double-casing pipe is comprehensively judged by observing the dropping speed of the physiological saline, the blockage degree of the pipe, the drainage quantity, the color, the character and the like of the drainage liquid at the frequency per hour; once the double cannula is blocked, if the conventional method cannot dredge, the double cannula needs to be pulled out and replaced by a new double cannula, and the patient may suffer from the pain of reoperation.

The invention content is as follows:

the utility model aims to solve the problems mentioned in the background technology and provide a double sleeve for abdominal drainage.

The utility model adopts the following technical scheme to realize the purpose of the invention: an abdominal cavity drainage double cannula comprises a drainage inner cannula, a rotary connection seat, a connection tube, a drainage outer cannula and a connection seat; the rotary connection seat is communicated with the drainage inner sleeve and is arranged at the rear end of the drainage inner sleeve; one end of the connecting pipe is communicated with the rotary connection seat, and the other end of the connecting pipe is communicated with the negative pressure device; the connecting seat is communicated with the drainage outer sleeve and is arranged at the rear end of the drainage outer sleeve; a plurality of inner sleeve drainage holes are formed in the front end of the drainage inner sleeve; the front end of the drainage outer sleeve is provided with a plurality of outer sleeve drainage holes; the drainage inner sleeve is sleeved inside the drainage outer sleeve, and the front end of the drainage inner sleeve extends to the front end of the drainage outer sleeve; the drainage inner sleeve and the rear end of the drainage outer sleeve are detachably and hermetically connected with the connecting seat through a screwing seat.

Preferably, the aperture of the drainage hole of the outer sleeve is larger than that of the drainage hole of the inner sleeve.

Furthermore, a rotary joint is arranged at the front end of the rotary joint seat, and an external thread is arranged on the outer wall surface of the rotary joint; the drainage inner sleeve and the drainage outer sleeve are detachably, hermetically and spirally connected at the rear ends of the drainage inner sleeve and the drainage outer sleeve through the external threads arranged on the rotary joint and the internal threads arranged on the inner wall surface of the connecting seat.

Further, the abdominal cavity drainage double-cannula also comprises a water seat; a plurality of flushing capillaries are uniformly arranged in the tube wall of the drainage outer sleeve along the length direction of the tube wall, and a plurality of flushing holes which are independently communicated with the flushing capillaries and have the same number are arranged at the front end of the drainage outer sleeve; the water seat is arranged on the connecting seat, one end of the water seat is communicated with the plurality of flushing capillary tubes, and the other end of the water seat can be hermetically connected with a normal saline infusion bag or an infusion apparatus connected with the normal saline infusion bottle.

Further, the abdominal cavity drainage double cannula also comprises a medicine seat; a plurality of flushing capillaries are uniformly arranged in the tube wall of the drainage outer sleeve along the length direction of the tube wall, and a plurality of flushing holes which are independently communicated with the flushing capillaries and have the same number are arranged at the front end of the drainage outer sleeve; the flushing capillary comprises a normal saline flushing capillary and a liquid medicine flushing capillary, one end of the water seat is communicated with the multiple normal saline flushing capillaries, and the other end of the water seat can be hermetically connected with a normal saline infusion bag or an infusion apparatus connected with the normal saline infusion bottle; the medicine seat is arranged on the connecting seat, one end of the medicine seat is communicated with the plurality of liquid medicine flushing capillaries, and the other end of the medicine seat can be hermetically connected with a liquid medicine infusion bag or an infusion apparatus of the liquid medicine infusion bottle.

Preferably, the plurality of saline flushing capillaries and the plurality of chemical flushing capillaries are provided at intervals.

Preferably, a sealing cover capable of sealing the other ends of the water seat and the medicine seat is arranged at the other ends of the water seat and the medicine seat; the water seat and the medicine seat can be distinguished by being made of materials with different colors or the sealing cover of the water seat and the medicine seat can be distinguished by being made of materials with different colors.

Furthermore, a clamp type ultrasonic flow monitoring device capable of monitoring the liquid flow in the connecting pipe is arranged on the connecting pipe; the clamp type ultrasonic flow monitoring device comprises two flow monitoring components and fixed clamps arranged at two ends of the two flow monitoring components; two the inboard that flow monitoring subassembly and connecting tube contacted all is provided with ultrasonic sensor, and two ultrasonic sensor position stagger, an ultrasonic sensor sets up in the left side of a flow monitoring subassembly, and another ultrasonic sensor sets up in the right side of another flow monitoring subassembly.

Furthermore, clamp formula ultrasonic flow monitoring devices still includes the display alarm, and the display alarm sets up on flow monitoring subassembly, and the display alarm is used for showing the numerical value of the connecting tube liquid flow who monitors through ultrasonic sensor to send out when this numerical value is less than preset threshold value and remind or report to the police.

Furthermore, the fixed clamp comprises two semicircular clamp assemblies and a connecting bolt which can fixedly connect the two clamp assemblies.

By adopting the technical scheme, the utility model better realizes the purpose of the invention, and the clamp type ultrasonic flow monitoring device is arranged on the connecting pipe, so that the flow of the drainage liquid in the connecting pipe can be monitored in real time, and corresponding reminding and alarming can be given when the double-sleeve pipe is blocked; the water seat and the medicine seat can be used for washing the abdominal cavity by dropping physiological saline or liquid medicine; can dismantle drainage interior sleeve pipe and the drainage outer tube of separation can be when the interior sleeve pipe of drainage blocks up, take out and abandon and change new drainage interior sleeve pipe from the drainage interior sleeve pipe that blocks up, guarantee that patient's drainage is unobstructed, promote two sleeve pipe drainage effects and prevent two sleeve pipe and block up, alleviate medical staff to keeping somewhere two sleeve pipe patient's monitoring work load, reduce the emergence of two sleeve pipe complications, more importantly reduces the patient and need perform the operation once more because of two sleeve pipe blocks up and keep somewhere the misery of two sleeve pipes.

Description of the drawings:

fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is the schematic diagram of the position of the drainage sleeve 1, the screw connection seat 2, the connection pipe 3 and the clamp-type ultrasonic flow monitoring device 8 and the schematic diagram of the cross-sectional structure of the drainage sleeve 1.

Fig. 3 is a schematic diagram of the arrangement positions of the middle drainage outer sleeve 4, the connecting seat 5, the water seat 6 and the medicine seat 7.

Fig. 4 is a partial enlarged view of a portion a in fig. 3 of the present invention and a schematic cross-sectional structure of the drainage outer tube 4.

Fig. 5 is a schematic view of the cross-sectional structure of the middle drainage outer tube 4 and the arrangement positions of the normal saline flushing capillary 421 and the liquid flushing capillary 422.

Fig. 6 is a schematic diagram of the cross-sectional structure of the middle clamp type ultrasonic flow monitoring device 8 and a schematic diagram of the arrangement positions of the connecting pipe 3 and the clamp type ultrasonic flow monitoring device 8.

Fig. 7 is a schematic structural view of the middle fixing clip 82 of the present invention.

The reference numerals are illustrated in the following table.

Number of mark	Name of label	Number of mark	Name of the tag
				1	Drainage inner sleeve 1	5	Connecting seat 5
11	Inner sleeve drainage hole 11	6	Water seat 6
				2	Screw connection seat 2	7	Medicine seat 7
21	Rotary joint 21	8	Clamp type ultrasonic flow monitoring device 8
				3	Connecting pipe 3	81	Flow monitoring assembly 81
4	Drainage outer sleeve 4	811	Ultrasonic sensor 811
				41	Outer sleeve drainage hole 41	812	Display alarm 812
42	Flushing capillary 42	82	Fixing clamp 82
				421	Physiological saline flushing capillary 421	821	Clip assembly 821
422	The liquid medicine washes the capillary 422	822	Connecting bolt 822
				43	Flushing hole 43

The specific implementation mode is as follows:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative effort, and the contents of the invention will be further described below with reference to the drawings:

example 1:

referring to the attached figures 1, 2, 3 and 4 of the specification, the abdominal cavity drainage double-cannula comprises a drainage inner cannula 1, a rotary connection base 2, a connecting tube 3, a drainage outer cannula 4 and a connecting base 5; the rotary joint seat 2 is communicated with the drainage inner sleeve 1 and is arranged at the rear end of the drainage inner sleeve 1; one end of the connecting pipe 3 is communicated with the rotary connection seat 2, and the other end is communicated with a negative pressure device which can be a negative pressure machine or a negative pressure drainage bag or a negative pressure drainage bottle; the connecting seat 5 is communicated with the drainage outer sleeve 4 and is arranged at the rear end of the drainage outer sleeve 4; a plurality of inner sleeve drainage holes 11 are formed in the front end of the drainage inner sleeve 1; the front end of the drainage outer sleeve 4 is provided with a plurality of outer sleeve drainage holes 41; the drainage inner sleeve 1 is sleeved inside the drainage outer sleeve 4, and the front end of the drainage inner sleeve 1 extends to the front end of the drainage outer sleeve 4; the rear ends of the drainage inner sleeve 1 and the drainage outer sleeve 4 are detachably and hermetically connected with the connecting seat 5 through the screwing seat 2; the drainage liquid such as blood, pus, inflammatory effusion, bile, secretion and the like sequentially enters the drainage inner sleeve 1 through the outer sleeve drainage hole 41 and the inner sleeve drainage hole 11 and is drained out of the abdominal cavity of the patient under all negative pressure.

In a preferred embodiment, the outer cannula drainage holes 41 have a larger pore size than the inner cannula drainage holes 11; so that the drainage outer sleeve 4 is not easily blocked by drainage liquid such as blood, pus, inflammatory effusion, bile, secretion and the like; in order to further prevent the blockage of the outer sleeve drainage hole 41 arranged at the front end of the drainage outer sleeve 4, the outer sleeve drainage hole 41 can be made large enough, so that the normal saline together with the blood, the pus, the inflammatory exudate, the bile, the secretion and even the tissues in the abdominal cavity can conveniently enter the drainage outer sleeve 4 through the outer sleeve drainage hole 41 and finally can be completely drained out of the abdominal cavity through the drainage inner sleeve 1 arranged in the drainage outer sleeve 4 under negative pressure.

In one embodiment, referring to fig. 1, 2 and 3, a screw joint 21 is arranged at the front end of the screw joint seat 2, and an external thread is arranged on the outer wall surface of the screw joint 21; the connecting seat 5 is hollow, an internal thread which can be matched with the external thread and is in sealing screwed connection with the internal thread is arranged on the inner wall surface of the connecting seat, and the rear ends of the drainage inner sleeve 1 and the drainage outer sleeve 4 are in detachable sealing screwed connection with the internal thread arranged on the inner wall surface of the connecting seat 5 through the external thread arranged on the screwed joint 21; can separate drainage inner cannula 1 and drainage outer cannula 4 through the mode that can dismantle sealed connecing soon, can change drainage inner cannula 1 under the condition of drainage inner cannula 1 jam.

In one embodiment, referring to fig. 1 and 3, the peritoneal drainage double cannula further comprises a water seat 6; a plurality of flushing capillaries 42 are uniformly arranged in the tube wall of the drainage outer sleeve 4 along the length direction of the tube wall, and a plurality of flushing holes 43 which are independently communicated with the flushing capillaries 42 and have the same number are arranged at the front end of the drainage outer sleeve 4; the water seat 6 is arranged on the connecting seat 5, one end of the water seat 6 is communicated with the plurality of flushing capillary tubes 42, and the other end of the water seat 6 can be hermetically connected with a normal saline infusion bag or an infusion apparatus connected with the normal saline infusion bottle; the normal saline in the normal saline infusion bag or the normal saline infusion bottle can enter the abdominal cavity through the infusion apparatus, the water seat 6, the washing capillary tube 42 and the washing hole 43 in sequence, the normal saline is washed in the abdominal cavity, and the normal saline dripped into the abdominal cavity together with blood, pus, inflammatory effusion, bile, secretion and the like in the abdominal cavity is drained through negative pressure drainage through the drainage inner sleeve 1.

In one embodiment, referring to fig. 1 and 3, the abdominal drainage double cannula further comprises a drug seat 7; a plurality of washing capillaries 42 are uniformly arranged on the inner edge of the tube wall of the drainage outer sleeve 4 along the length direction, and a plurality of washing holes 43 which are independently communicated with the washing capillaries 42 and have the same number are arranged at the front end of the drainage outer sleeve 4; the flushing capillary tube 42 comprises a normal saline flushing capillary tube 421 and a liquid medicine flushing capillary tube 422, one end of the water seat 6 is communicated with the multiple normal saline flushing capillary tubes 421, and the other end of the water seat can be hermetically connected with an infusion apparatus connected with a normal saline infusion bag or a normal saline infusion bottle; the medicine seat 7 is arranged on the connecting seat 5, one end of the medicine seat 7 is communicated with the plurality of medicine liquid flushing capillaries 422, and the other end can be hermetically connected with a medicine liquid infusion bag or an infusion apparatus connected with the medicine liquid infusion bottle; the liquid medicine in the medicine bottle can enter the abdominal cavity of the patient through the infusion apparatus, the medicine seat 7, the flushing capillary tube 42 and the flushing hole 43 in sequence, and the liquid medicine is flushed to the abdominal cavity, so that the effects of diminishing inflammation and stopping bleeding are achieved; after the aim of diminishing inflammation and stopping bleeding is achieved, the patient can drain the liquid medicine dripped into the abdominal cavity together with the normal saline, blood, pus, inflammatory effusion, bile, secretion and the like in the abdominal cavity by negative pressure drainage through the drainage inner sleeve 1; specifically, the liquid medicine comprises anti-inflammatory liquid medicine and hemostatic liquid medicine.

In a preferred embodiment, referring to fig. 5, the plurality of saline flushing capillaries 421 and the plurality of medical fluid flushing capillaries 422 are arranged at intervals, that is, one medical fluid flushing capillary 422 is arranged between two saline flushing capillaries 421, and one saline flushing capillary 421 is arranged between two medical fluid flushing capillaries 422; the arrangement aims at enabling the flushing holes 43 which are independently communicated with the normal saline flushing capillary 421 and the liquid medicine flushing capillary 422 to be uniformly distributed on the circumferential surface of the drainage outer sleeve 4, so that the normal saline or liquid medicine coming out of the flushing holes 43 comes out along all directions of the drainage outer sleeve 4, the normal saline flushing and liquid medicine flushing of the abdominal cavity are more sufficient and thorough, and no dead angle exists; meanwhile, the number of the saline flushing capillaries 421 and the drug flushing capillaries 422 shown in the figure is 5 respectively, and the total number of the corresponding flushing holes 43 is 10, but the number of the saline flushing capillaries 421 and the drug flushing capillaries 422 is not limited to only 5, and may also be 8, 10, and the like.

In a preferred embodiment, a sealing cover capable of sealing the other ends of the water seat 6 and the drug seat 7 is arranged at the other ends of the water seat 6 and the drug seat 7, so that the water seat 6 and the drug seat 7 can be sealed by the sealing cover when the abdominal cavity does not need to be washed, and the water seat 6 and the drug seat 7 are prevented from being polluted by external bacteria, or the external bacteria finally enter the abdominal cavity through the water seat 6 and the drug seat 7; the water seat 6 and the medicine seat 7 can be distinguished by being made of materials with different colors, or the sealing covers of the water seat 6 and the medicine seat 7 can be distinguished by being made of materials with different colors; the water seat 6 and the medicine seat 7 can be distinguished by colors for medical staff visually, and the medicine seat can be selected and used in a targeted manner; specifically, the water seat 6 and/or the sealing cover of the water seat 6 are made of blue materials, and the medicine seat 7 and/or the sealing cover of the medicine seat 7 are made of green materials.

In one embodiment, referring to fig. 1, 2 and 6, a clamp type ultrasonic flow monitoring device 8 capable of monitoring the flow rate of the liquid in the connecting pipe 3 is mounted on the connecting pipe 3; the clamp type ultrasonic flow monitoring device 8 comprises two flow monitoring assemblies 81 and fixed clamps 82 arranged at two ends of the two flow monitoring assemblies 81; two the inboard of flow monitoring subassembly 81 and connecting pipe 3 contact all is provided with ultrasonic sensor 811, and two ultrasonic sensor 811 position staggers, and one ultrasonic sensor 811 sets up in the left side of a flow monitoring subassembly 81, and another ultrasonic sensor 811 sets up in the right side of another flow monitoring subassembly 81, and two ultrasonic sensor 811's line is the certain acute angle with connecting pipe 3 length direction promptly.

The operating principle of the clamp type ultrasonic flow monitoring device 8 is as follows: one ultrasonic sensor 811 alternately transmits or receives ultrasonic waves, which cross the drainage fluid in the connection tube 3 at an oblique angle and then are alternately received or transmitted by the other ultrasonic sensor 811; when the flow direction of the ultrasonic wave passing through the drainage liquid and advancing is opposite to that of the drainage liquid, the propagation speed is reduced; on the contrary, when the flow direction of the drainage liquid is the same, the propagation speed becomes fast, the propagation time difference of the two ultrasonic waves is converted into the flow rate, the influence of environmental change can be counteracted, and the stable measurement of the flow rate is realized.

In one embodiment, referring to fig. 6, the clamp-type ultrasonic flow monitoring device 8 further includes a display alarm 812, the display alarm 812 is disposed on the flow monitoring assembly 81, and the display alarm 812 is configured to display a value of the liquid flow in the connecting pipe 3 monitored by the ultrasonic sensor 811, and send a warning or alarm when the value is lower than a preset threshold; specifically, the value of the liquid flow in the connecting pipe 3 monitored by the ultrasonic sensor 811 is directly displayed on the display alarm 812, for example: if the preset threshold is set to 5ml/min, the propagation time difference of the ultrasonic waves alternately emitted by the two ultrasonic sensors 811 is converted into a flow rate, and when the flow rate is less than 5ml/min, the display alarm 812 emits a warning or alarm such as a dripping sound, a voice broadcast, or a flashing light.

In one embodiment, referring to fig. 6 and 7, the fixing clip 82 includes two semicircular clip assemblies 821 and a connecting bolt 822 fixedly connecting the two clip assemblies 821; specifically, the mounting seats are arranged on two sides of the clamp assembly 821, the mounting seats are provided with mounting holes, threads are arranged on the inner wall of each mounting hole, and the connecting bolts 822 are screwed on the threads of the mounting holes to realize the fixed connection of the two clamp assemblies 821.

Specifically, this patent clamp formula ultrasonic flow monitoring devices 8 can directly choose for use kirschner clamp formula flow sensor FD-X series product, and this patent has only changed the fixed part on this product into fixed clamp 82 to more convenient fix clamp formula ultrasonic flow monitoring devices 8 detachable on connecting pipe 3.

The use method of the abdominal cavity drainage double-sleeve of the utility model is as follows: the drainage inner cannula 1 is inserted into the drainage outer cannula 4, the rotary connection base 2 is rotatably connected and installed on the connection base 5 by rotating the rotary connection base 2, the abdominal cavity drainage double cannula is reserved in the abdominal cavity of a patient, the connection pipe 3 is communicated with the negative pressure device, and the water base 6 can be hermetically connected with an infusion apparatus connected with a normal saline infusion bag or a normal saline infusion bottle or the medicine base 7 can be hermetically connected with an infusion apparatus connected with a medicine liquid infusion bag or a medicine liquid infusion bottle to carry out normal saline flushing or medicine liquid flushing on the abdominal cavity as required; and install clamp formula ultrasonic flow monitoring devices 8 through fixed clamp 82 on connecting pipe 3, and preset the threshold value, when the abdominal cavity drainage in-process shows that alarm 812 reminds or reports to the police, medical personnel observe whether abdominal cavity drainage double cannula blocks up, can adopt current bath after blocking, methods such as extrusion drainage tube dredge, if find can not dredge, the transfusion system of connecting on disconnection water base 6 and/or medicine seat 7, close sealed lid, take off clamp formula ultrasonic flow monitoring devices 8, rotatory connect seat 2 will connect seat 2 with connecting seat 5 separation soon, extract drainage inner cannula 1, and change new drainage inner cannula 1, repeat above-mentioned operation alright make the drainage of abdominal cavity drainage double cannula unobstructed.

It is clear that modifications and/or additions of parts may be made to the peritoneal drainage double cannula and corresponding method as described heretofore, without departing from the field and scope of the present invention.

It is also clear that, although the present invention has been described in detail, a person of skill in the art shall certainly be able to achieve many other equivalent forms of dual abdominal drainage cannula and corresponding methods, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

Claims (9)

1. An abdominal cavity drainage double cannula is characterized in that: comprises a drainage inner sleeve (1), a rotary connection seat (2), a connecting pipe (3), a drainage outer sleeve (4) and a connecting seat (5); the rotary connection seat (2) is communicated with the drainage inner sleeve (1) and is arranged at the rear end of the drainage inner sleeve (1); one end of the connecting pipe (3) is communicated with the rotary joint seat (2), and the other end is communicated with the negative pressure device; the connecting seat (5) is communicated with the drainage outer sleeve (4) and is arranged at the rear end of the drainage outer sleeve (4); a plurality of inner sleeve drainage holes (11) are formed in the front end of the drainage inner sleeve (1); a plurality of outer sleeve drainage holes (41) are arranged at the front end of the drainage outer sleeve (4); the drainage inner sleeve (1) is sleeved inside the drainage outer sleeve (4) and the front end of the drainage inner sleeve (1) extends to the front end of the drainage outer sleeve (4); the drainage inner sleeve (1) and the rear end of the drainage outer sleeve (4) are detachably and hermetically connected with the connecting seat (5) through the screwing seat (2); a clamp type ultrasonic flow monitoring device (8) capable of monitoring the liquid flow in the connecting pipe (3) is arranged on the connecting pipe (3); the clamp type ultrasonic flow monitoring device (8) comprises two flow monitoring assemblies (81) and fixing clamps (82) arranged at two ends of the two flow monitoring assemblies (81); two the inboard of flow monitoring subassembly (81) and connecting pipe (3) contact all is provided with ultrasonic sensor (811), and two ultrasonic sensor (811) position staggers, and one ultrasonic sensor (811) set up the left side in one flow monitoring subassembly (81), and another ultrasonic sensor (811) set up the right side in another flow monitoring subassembly (81).

2. The peritoneal drainage dual cannula of claim 1, wherein: the aperture of the outer sleeve drainage hole (41) is larger than that of the inner sleeve drainage hole (11).

3. The peritoneal drainage dual cannula of claim 1, wherein: a rotary joint (21) is arranged at the front end of the rotary joint seat (2), and an external thread is arranged on the outer wall surface of the rotary joint (21); the drainage connecting device is characterized in that the connecting seat (5) is hollow, an internal thread which can be matched with the external thread and is in sealed screwed connection with the external thread is arranged on the inner wall surface of the connecting seat, and the drainage inner sleeve (1) and the rear end of the drainage outer sleeve (4) are in detachable sealed screwed connection with the internal thread arranged on the inner wall surface of the connecting seat (5) through the external thread arranged on the screwed joint (21).

4. The peritoneal drainage dual cannula of claim 1, wherein: the abdominal cavity drainage double-cannula also comprises a water seat (6); a plurality of flushing capillaries (42) are uniformly arranged in the tube wall of the drainage outer sleeve (4) along the length direction of the tube wall, and a plurality of flushing holes (43) which are independently communicated with the flushing capillaries (42) and have the same number are arranged at the front end of the drainage outer sleeve (4); the water seat (6) is arranged on the connecting seat (5), one end of the water seat (6) is communicated with the plurality of flushing capillaries (42), and the other end of the water seat can be hermetically connected with a normal saline infusion bag or an infusion apparatus connected with the normal saline infusion bottle.

5. The peritoneal drainage dual cannula of claim 4, wherein: the abdominal cavity drainage double-cannula also comprises a medicine seat (7); the flushing capillary tube (42) comprises a normal saline flushing capillary tube (421) and a liquid medicine flushing capillary tube (422), one end of the water seat (6) is communicated with the multiple normal saline flushing capillary tubes (421), and the other end of the water seat can be hermetically connected with a normal saline infusion bag or an infusion apparatus connected with the normal saline infusion bottle; the medicine seat (7) is arranged on the connecting seat (5), one end of the medicine seat (7) is communicated with the plurality of liquid medicine flushing capillaries (422), and the other end of the medicine seat can be hermetically connected with a liquid medicine infusion bag or an infusion apparatus connected with the liquid medicine infusion bottle.

6. The peritoneal drainage dual cannula of claim 5, wherein: the plurality of saline flushing capillaries (421) and the plurality of liquid medicine flushing capillaries (422) are arranged at intervals.

7. The peritoneal drainage dual cannula of claim 5, wherein: a sealing cover capable of sealing the other ends of the water seat (6) and the medicine seat (7) is arranged at the other ends of the water seat (6) and the medicine seat (7); the water seat (6) and the medicine seat (7) can be distinguished by being made of materials with different colors or the sealing cover of the water seat (6) and the medicine seat (7) can be distinguished by being made of materials with different colors.

8. The peritoneal drainage dual cannula of claim 1, wherein: the clamp type ultrasonic flow monitoring device (8) further comprises a display alarm (812), the display alarm (812) is arranged on the flow monitoring assembly (81), the display alarm (812) is used for displaying the value of the liquid flow in the connecting pipe (3) monitored by the ultrasonic sensor (811), and a prompt or an alarm is given when the value is lower than a preset threshold value.

9. The peritoneal drainage dual cannula of claim 1, wherein: the fixing clamp (82) comprises two semicircular clamp assemblies (821) and a connecting bolt (822) which can fixedly connect the two clamp assemblies (821).

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