Device for conveniently converting plasma drainage tube into double sleeves

By designing a device including an outer sleeve and an inner sleeve, the complexity of converting plasma drainage tube into a double sleeve in the prior art is solved, convenient conversion and efficient negative pressure control are achieved, and the safety and convenience of use of the device are improved.

CN119971191APending Publication Date: 2025-05-13GENERAL HOSPITAL OF THE CENT WAR ZONE OF THE CHINESE PEOPLES LIBERATION ARMY
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Patent Information

Application Number
CN202510345755.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-24
Publication Date
2025-05-13

AI Technical Summary

Technical Problem

The prior art lacks a device that facilitates the conversion of plasma drainage tubes into double casings, which leads to complex production and difficult to grasp clinically. The homemade double casings have problems such as high failure rate and inaccurate negative pressure control.

Method used

A device including an outer sleeve and an inner pipe is designed. A sleeve hole is provided on the outer sleeve and a suction hole and a jet cavity are provided on the inner sleeve. It is equipped with a water inlet pipe, a negative pressure pipe and medical rubber, and an alarm and a pressure dial for controlling negative pressure and monitoring systems.

Benefits of technology

It realizes the convenience of converting plasma drainage tubes into double cannulas, improves the convenience and safety of the device, and ensures the accuracy of negative pressure control and the convenience of troubleshooting.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of medical instruments, and discloses a device for conveniently converting a plasma drainage tube into double sleeves, the device comprises an outer sleeve, the outer side of the outer sleeve is provided with sleeve holes distributed in a rectangular array, and the left end of the outer sleeve is fixedly connected with an injector head; and spraying openings distributed in an annular array mode are formed in the outer surface of the spraying head, an inner pipe is arranged in the outer sleeve, an inserting pad is fixedly connected to the outer surface of the inner pipe, and a water inlet pipe extending to the right side of the inner pipe is fixedly connected to the interior of the inner pipe. The device for conveniently converting the plasma drainage tube into the double sleeves has the advantages of being convenient to use, high in safety and the like, and the problems that manufacturing is complex, and clinical mastering is not easy are solved; the problems that a sputum suction tube, a scalp needle tube and a suture with a needle need to be prepared for self-making of the double cannula, operation and maintenance of professionals are needed, the failure rate is high, and popularization is not easy are solved.
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Description

Technical Field

[0001] The invention relates to the technical field of medical appliances, in particular to a device for conveniently converting a plasma drainage tube into a double cannula. Background Art

[0002] Surgical infection usually occurs after surgery. If it is not handled in time or thoroughly, it often leads to postoperative fever, surgical infection, and even serious complications such as anastomotic fistula, which leads to surgical failure. The usual practice of surgeons is to place a plasma drainage tube in the easily drained part of the surgical area immediately after surgery to facilitate the timely drainage of local effusion from the surgical area. Most plasma drainage tubes are relatively soft, single-lumen round tubes with a diameter of about 1 cm. In other surgeries, such as abdominal abscess surgery, retroperitoneal abscess surgery, and intestinal fistula surgery, the plasma drainage tube has a poor drainage effect because the effusion in the surgical area is viscous and may even be mixed with intestinal contents. Doctors often directly place a double cannula, which consists of an outer tube and an inner tube. The inner tube can be flushed with local saline combined with negative pressure suction to remove the more viscous fluid that is not easy to drain from the plasma tube in time to avoid the progression of local infection.

[0003] However, surgery is not always smooth sailing. In digestive surgery, although the doctor promptly places a plasma tube in the surgical area after surgery, digestive tract fistulas may still occur after surgery, such as bile leakage, pancreatic leakage, intestinal fistula, etc. At this time, negative pressure flushing is often required in time. Rashly removing the plasma tube and reinserting the double cannula along the drainage hole often leads to failure because the fixed sinus has not yet been formed. At present, there is no convenient device to convert the plasma tube into a double cannula. The clinical treatment method is to place a suction tube of appropriate thickness into the plasma tube, and use a scalp needle to inject water and connect negative pressure to simply make a double cannula. However, the homemade double cannula has the following disadvantages:

[0004] 1. The production is complicated and difficult to master clinically. The self-made double cannula requires the preparation of suction tubes, scalp needle tubes, and needle sutures. It requires professional personnel to operate and maintain it, has a high failure rate, and is not easy to promote;

[0005] 2. The suction tube with built-in negative pressure and the scalp needle tube for water collection are not easy to fix and are easily displaced, resulting in many malfunctions, or water cannot be flushed, or the suction tube is easily blocked, or suction fails;

[0006] 3. The location where the suction tube is placed at the outer opening of the plasma tube often leaks, which can easily contaminate the bed sheets, resulting in a poor patient experience;

[0007] 4. There is no clear standard or label for how high the pressure of negative pressure suction should be adjusted. The homemade double cannula often requires patients and their families to check and maintain it by themselves, and even nurses do not know how to operate it. As a result, when a malfunction occurs, the pressure is too high, resulting in excessive suction and bleeding; when the suction is too low, the negative pressure flushing function cannot be achieved;

[0008] Therefore, a device for conveniently converting a plasma drainage tube into a double cannula is proposed to solve the above problem. Summary of the invention

[0009] 1. Technical issues to be resolved

[0010] In view of the deficiencies in the prior art, the present invention provides a device that is convenient for converting a plasma drainage tube into a double-tube, which has the advantages of being easy to use and highly safe, and solves the problems of being complex to manufacture and difficult to master clinically; homemade double-tubes require one to prepare suction tubes, scalp needle tubes, and needle sutures, which require professional personnel to operate and maintain, have a high failure rate, and are difficult to promote; the suction tube with built-in negative pressure and the scalp needle tube for receiving water are not easy to fix, and their positions are easy to shift, resulting in many failures, or they cannot be flushed due to lack of water, or the suction tube is easily blocked, or suction fails; the position where the outer opening of the plasma tube is placed where the suction tube is placed often leaks, which is easy to contaminate the bed sheets, resulting in a poor patient experience; there is no obvious uniformity or identification as to how much the negative pressure suction pressure should be adjusted; homemade double-tubes often require patients and their families to check and maintain them by themselves, and even nurses do not understand how to operate them, resulting in problems such as excessive pressure causing excessive suction and bleeding after a failure; and too little suction cannot achieve the effect of negative pressure flushing.

[0011] (II) Technical solution

[0012] The technical solution of the present invention to solve the above technical problems is as follows: a device for conveniently converting a plasma drainage tube into a double sleeve, comprising an outer sleeve, the outer side of the outer sleeve is provided with sleeve holes distributed in a rectangular array, the left end of the outer sleeve is fixedly connected to a spray head, the outer surface of the outer sleeve is fixedly connected to an outlet mark, the outer surface of the spray head is provided with spray ports distributed in a ring array, the inner part of the outer sleeve is provided with an inner tube, the outer surface of the inner tube is fixedly connected to a plug pad, the plug pad is embedded with an air inlet pipe connected to the inner part and extending to the right side thereof, the inner part of the inner tube is fixedly connected with a water inlet pipe and a negative pressure pipe extending to the right side thereof, the inner tube is filled with medical rubber between the inner tube and the water inlet pipe and the negative pressure pipe, the outer side of the inner tube is provided with a suction hole adapted to the sleeve hole and connected to the negative pressure pipe, the left end of the inner tube is provided with a spray cavity connected to both the inner tube and the water inlet pipe, and the right side of the spray head is fixedly connected with a connecting sealing ring adapted to the inner tube;

[0013] The device also includes an alarm, a pressure gauge is embedded in the front of the alarm, connectors are provided on the left and right sides of the alarm for communication therewith, an alarm light and an alarm speaker are provided on the front of the alarm from top to bottom, the left connector is connected to the water inlet pipe, and the right connector is connected to the external air intake device.

[0014] The beneficial effects of the present invention are:

[0015] 1) The device can be used to convert the plasma drainage tube into a double-tube device. First, physiological saline can be injected into the injection cavity through the water inlet pipe, and then the physiological saline can be injected into the patient's body through the injection port to dilute the viscous pollutants therein, so that the viscous pollutants can be sucked into the negative pressure tube through the suction hole, so that the viscous pollutants can be sucked out of the surgical infection site in a timely and effective manner, and it has the advantage of being easy to use.

[0016] 2) This device can convert the plasma drainage tube into a double-tube device, so that the flow rate of the water inlet pipe is fixed. The internal air pressure of the negative pressure tube can be determined by observing the pressure dial. The pressure is maintained at around 200±50pa normally, and the indicator area is green; if it is too high or too low, it indicates an abnormality, and the medical staff can be reminded through the alarm speaker, which is convenient for timely discovery and troubleshooting, and has the advantage of high safety.

[0017] Based on the above technical solution, the present invention can also be improved as follows.

[0018] Furthermore, the sleeve hole covers a length of 7 cm and has a diameter of 5 mm.

[0019] Furthermore, the plug pad is arranged in a structure of being small on the left and large on the right, and sealing rings which are distributed at equal distances in the transverse direction are fixedly connected to the outer surface of the plug pad.

[0020] The beneficial effect of adopting the above further solution is to enhance the sealing between the outer sleeve and the inner tube.

[0021] Furthermore, the outer side of the sealing ring is arranged in an inclined surface.

[0022] The beneficial effect of adopting the above further solution is that it is convenient to align the injection cavity inside the inner tube with the injection head. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0025] Figure 3 It is a cross-sectional view of the inner tube of the present invention;

[0026] Figure 4 It is a side cross-sectional view of the inner tube of the present invention;

[0027] Figure 5 It is a schematic diagram of the alarm of the present invention.

[0028] In the figure: 1. outer sleeve; 11. sleeve hole; 2. injection head; 21. injection port; 3. inner tube; 4. plug pad; 41. air inlet pipe; 5. outlet mark; 6. water inlet pipe; 7. negative pressure pipe; 71. suction hole; 8. medical rubber; 81. sealing ring; 9. injection chamber; 10. alarm; 101. connector; 102. pressure gauge; 103. alarm light; 104. alarm speaker; 105. external air intake device. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1, by Figure 1-5 Provided is a device for conveniently converting a plasma drainage tube into a double sleeve, the invention comprises an outer sleeve 1, the outer side of the outer sleeve 1 is provided with sleeve holes 11 distributed in a rectangular array, the left end of the outer sleeve 1 is fixedly connected with an injection head 2, the outer surface of the outer sleeve 1 is fixedly connected with an outlet mark 5, the outer surface of the injection head 2 is provided with injection ports 21 distributed in a ring array, the inner side of the outer sleeve 1 is provided with an inner tube 3, the outer surface of the inner tube 3 is fixedly connected with a plug pad 4, the plug pad 4 is embedded with an air inlet pipe 41 connected with the inner side and extending to the right side thereof, the inner side of the inner tube 3 is fixedly connected with a water inlet pipe 6 and a negative pressure pipe 7 extending to the right side thereof, the inner side of the inner tube 3 is filled with medical rubber 8, the outer side of the inner tube 3 is provided with a suction hole 71 adapted to the sleeve hole 11 and connected to the negative pressure pipe 7, the left end of the inner tube 3 is provided with an injection cavity 9 connected to the water inlet pipe 6, and the right side of the injection head 2 is fixedly connected with a connecting sealing ring 81 adapted to the inner tube 3;

[0031] The covering length of the cannula hole 11 is 7 cm, and the diameter of the cannula hole 11 is 5 mm;

[0032] The plug pad 4 is a structure with a small left side and a large right side, and the outer surface of the plug pad 4 is fixedly connected with sealing rings distributed at equal distances in the transverse direction;

[0033] Enhance the sealing between the outer tube 1 and the inner tube 3;

[0034] The outer side of the sealing ring 81 is arranged in an inclined surface;

[0035] It is convenient to align the injection cavity 9 inside the inner tube 3 with the injection head 2.

[0036] Embodiment 2, based on embodiment 1, the device also includes an alarm 10, a pressure gauge 102 is embedded on the front of the alarm 10, and connectors 101 connected thereto are provided on the left and right sides of the alarm 10. An alarm light 103 and an alarm speaker 104 are provided on the front of the alarm 10 from top to bottom, the left connector 101 is connected to the water inlet pipe 6, and the right connector 101 is connected to the external air intake device 105.

[0037] Working principle:

[0038] The first step to implement the innovation point:

[0039] Step 1: First, inject physiological saline into the injection chamber 9 through the water inlet pipe 6;

[0040] Step 2: injecting physiological saline into the patient's body through the injection port 21 to dilute the viscous pollutants therein;

[0041] Step 3: Finally, the viscous pollutants are sucked into the negative pressure tube 7 through the suction hole 71, so as to facilitate timely and effective removal of the viscous pollutants from the surgical infection site.

[0042] The second innovation point implementation steps:

[0043] By fixing the flow rate of the water inlet pipe 6, the internal air pressure of the negative pressure tube 7 can be determined by observing the pressure dial 102. The pressure is maintained at around 200±50Pa normally, and the indicator area is green. If the pressure is too high or too low, it indicates an abnormality, and the medical staff can be reminded through the alarm speaker 104, so as to facilitate timely detection and troubleshooting.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for conveniently converting a plasma drainage tube into a double cannula, comprising an outer cannula (1), characterized in that: The outer side of the outer sleeve (1) is provided with sleeve holes (11) distributed in a rectangular array, the left end of the outer sleeve (1) is fixedly connected to an injection head (2), the outer surface of the outer sleeve (1) is fixedly connected to an outlet mark (5), the outer surface of the injection head (2) is provided with injection ports (21) distributed in a ring array, the inner side of the outer sleeve (1) is provided with an inner tube (3), the outer surface of the inner tube (3) is fixedly connected to a plug pad (4), the plug pad (4) is embedded with an intake pipe (41) which is connected to the inner side and extends to the right side thereof, and the inner tube (3) is provided with an inner tube (3). The inner part of the tube (3) is fixedly connected with a water inlet pipe (6) and a negative pressure pipe (7) extending to the right side thereof; medical rubber (8) is filled between the inner tube (3) and the outlet mark (5), the water inlet pipe (6) and the negative pressure pipe (7); the outer side of the inner tube (3) is provided with a suction hole (71) adapted to the sleeve hole (11) and connected to the negative pressure pipe (7); the left end of the inner tube (3) is provided with an injection cavity (9) connected to both the outlet mark (5) and the water inlet pipe (6); and the right side of the injection head (2) is fixedly connected with a connection sealing ring (81) adapted to the inner tube (3).

2. A device for conveniently converting a plasma drainage tube into a double cannula according to claim 1, characterized in that: The device further comprises an alarm (10), wherein a pressure gauge (102) is embedded on the front of the alarm (10), and connectors (101) are provided on both the left and right sides of the alarm (10) and are in communication with the alarm (10), and an alarm light (103) and an alarm speaker (104) are provided on the front of the alarm (10) in order from top to bottom, wherein the left connector (101) is connected to a water inlet pipe (6), and the right connector (101) is connected to an external air intake device (105).

3. The device for conveniently converting a plasma drainage tube into a double cannula according to claim 1, characterized in that: The sleeve hole (11) covers a length of 7 cm and has a diameter of 5 mm.

4. The device for conveniently converting a plasma drainage tube into a double cannula according to claim 1, characterized in that: The plug-in pad (4) is arranged in a structure with a small left side and a large right side, and the outer surface of the plug-in pad (4) is fixedly connected with sealing rings which are distributed at equal distances in the transverse direction.

5. The device for conveniently converting a plasma drainage tube into a double-tube according to claim 1, characterized in that: The outer side of the sealing ring (81) is arranged in an inclined surface.