Drainage tube extractor

Abstract

The invention discloses a drainage tube extractor which comprises a fixing tube and an operation cylinder. The whole device can be placed in a drainage tube through the fixing cylinder, and after the device is placed in a corresponding position, the operation cylinder is moved back and forth to cut off a suture from the interior of the drainage tube, so that noninvasive removal of the drainage tube of a patient is realized; meanwhile, in order to ensure that the process can be smoothly realized, the cutting assembly is made into a retractable form and can be put into the drainage tube when being retracted, and then the cutting assembly can be opened to cut the suture; a C-shaped sleeve is arranged in a matched mode at the same time, the drainage tube can be sleeved from the outside through the arranged C-shaped sleeve, that is, after the whole device is placed in, the C-shaped tube is placed in, the drainage tube can be clamped through the C-shaped tube, and the position with a suture line can be clamped; cutting is carried out after clamping, and further injury to the skin and pain of a patient caused by pulling of a suture in the cutting process can be effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a drainage tube extractor. Background Art

[0002] A drainage tube is a medical device designed to help patients drain unwanted fluids or gases from their bodies through a drainage function, so as to promote wound healing, prevent infection, and help doctors monitor the patient's recovery. Drainage tubes play an important role in various surgeries. However, after the drainage volume of the patient decreases, the drainage tube needs to be removed.

[0003] Currently, the general operation method for removing a drainage tube is to remove it during ward dressing change. However, in order to effectively prevent the drainage tube from slipping out during intraoperative placement of the drainage tube, the drainage tube is sutured with a suture. After the drainage fluid decreases, most cases require a second operation to remove the drainage tube. In this way, the drainage tube can be effectively removed; but this will bring unnecessary trauma to the patient and also increase the economic burden on the patient and their family; and currently, there is no way to cut the suture inside the drainage tube from the inside by an internal cutting method.

[0004] Therefore, a drainage tube extractor is needed to solve the above technical problems. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention designs a drainage tube extractor, including: a fixed tube and an operation cylinder; a plurality of limiting grooves are circumferentially arranged on the side wall of the fixed sleeve, and the operation cylinder is movably installed on the limiting grooves. A cutting assembly is movably installed circumferentially at the end of the operation cylinder. The cutting assembly includes a rotating rod and a cutting knife; the rotating rod is movably installed on the outer side wall of the operation cylinder, and the cutting knife is installed at the end of the rotating rod. The cutting knife is installed parallel to the operation cylinder. By controlling the telescopic movement of the operation cylinder, the clockwise or counterclockwise rotation of the cutting knife is controlled, and then the cutting knife is controlled to approach the drainage tube wall to cut the suture.

[0006] Further, the cutting knife is of an arc-shaped structure, and a wedge-shaped opening is arranged on the inner side of the lower end of the cutting knife, and the wedge-shaped opening inclines from the inner wall to the outer wall; a side cutting edge is arranged on the side wall of the cutting knife.

[0007] Further, the cutting knife is fixedly installed at the end of the rotating rod.

[0008] Further, the cutting knife is movably installed at the end of the rotating rod.

[0009] Further, an arc-shaped threaded plate is arranged at the rear end of the fixed cylinder, and a tightening sleeve is movably installed on the arc-shaped threaded plate. By rotating to control the forward and backward movement of the tightening sleeve, the inward clamping or loosening of the arc-shaped threaded plate is controlled.

[0010] Further, a conical sleeve is fixedly connected to the front end of the fixed cylinder, and the conical sleeve is inclined inward; a water-absorbing cotton is installed on the side wall near one end of the conical sleeve;

[0011] Further, the operating cylinder is of a hollow structure, and a handle is fixedly installed at the rear end of the operating cylinder;

[0012] Further, the drain tube extractor is also equipped with a C-shaped sleeve. A fixing belt is fixedly installed on the end face of the C-shaped sleeve, a soft magnetic strip is arranged inside the fixing belt, and a soft magnetic strip is also arranged on the outer side wall of the C-shaped sleeve.

[0013] The beneficial effects of the present invention are:

[0014] The present invention designs a drain tube extractor, including: a fixed tube and an operating cylinder; through the fixed cylinder, the whole device can be placed into the drain tube. After being placed in the corresponding position, the operating cylinder can be moved back and forth to cut the suture from the inside of the drain tube, so as to achieve non-invasive removal of the patient's drain tube; at the same time, in order to ensure the smooth realization of this process, the present invention makes the cutting assembly in a retractable form, which can be put into the drain tube when retracted, and then can be opened to cut the suture;

[0015] In addition, the present invention is also equipped with a C-shaped sleeve. By setting the C-shaped sleeve, the drain tube can be sleeved from the outside, that is, after the whole device is placed, the C-shaped tube is placed. After being placed, the drain tube can be clamped by the C-shaped tube, and the position with the suture can be clamped. After clamping and cutting, it can effectively prevent further damage to the skin and pain of the patient caused by the pulling of the suture during the cutting process;

[0016] In addition, in order to prevent the residual air and liquid in the drain tube from being pushed back into the patient's body during the process of putting the whole device in, the present invention makes the operating cylinder into a hollow structure to balance the air pressure and ensure that the air does not flow inward; at the same time, a water-absorbing cotton is installed on the side wall of the fixed tube near the conical sleeve end, and the water-absorbing cotton is arranged to adsorb the residual liquid on the drain tube wall to prevent it from collecting and flowing back into the patient's body during the pushing process. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below.

[0018] Figure 1 is an overall structural schematic diagram of a drain tube extractor;

[0019] Figure 2 is a front view of a drain tube extractor;

[0020] Figure 3 It is another overall structural schematic diagram of a drainage tube extractor;

[0021] Figure 4 It is an enlarged schematic diagram of part A of a drainage tube extractor;

[0022] Figure 5 It is an exploded view of a drainage tube extractor;

[0023] Figure 6 It is a sectional enlarged structural schematic diagram of a drainage tube extractor;

[0024] Figure 7 It is a structural schematic diagram of the C-shaped tube of a drainage tube extractor;

[0025] Figure 8 It is a simple schematic diagram of the cutting method of the cutting knife described in Embodiment 2 of a drainage tube extractor.

[0026] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0027] 1 - fixed tube, 11 - limit groove, 12 - arc-shaped threaded plate, 13 - tightening sleeve, 14 - absorbent cotton, 15 - conical sleeve, 2 - operating cylinder, 21 - handle, 22 - cutting assembly, 221 - rotating rod, 222 - cutting knife, 2221 - wedge-shaped opening, 2222 - side cutting edge, 3 - C-shaped sleeve, 31 - fixing belt, 311 - soft magnetic strip, 4 - drainage tube, 5 - suture. Detailed implementation manners

[0028] Embodiment 1

[0029] A drainage tube 4 extractor includes: a fixed tube 1 and an operating cylinder 2; limit grooves 11 are circumferentially arranged on the side wall of the fixed sleeve, and the operating cylinder 2 is movably installed on the limit grooves 11. The cutting assembly 22 is movably installed circumferentially at the end of the operating cylinder 2. The cutting assembly 22 includes a rotating rod 221 and a cutting knife 222; the rotating rod 221 is movably installed on the outer side wall of the operating cylinder 2, and the cutting knife 222 is installed at the end of the rotating rod 221. The cutting knife 222 is installed parallel to the operating cylinder 2. By controlling the telescopic movement of the operating cylinder 2, the clockwise or counterclockwise rotation is controlled, and then the cutting knife 222 is controlled to approach the wall of the drainage tube 4 to cut the suture 5; the whole device can be placed into the drainage tube 4 through the fixed cylinder. After being placed in the corresponding position, the operating cylinder 2 is moved back and forth to cut the suture 5 from the inside of the drainage tube 4, so as to achieve the non-invasiveness of removing the drainage tube 4 of the patient; at the same time, in order to ensure the smooth realization of this process, the cutting assembly 22 of the present invention is made in a retractable form, which can be put into the drainage tube 4 when retracted, and then can be opened to cut the suture 5.

[0030] Embodiment 2

[0031] In this embodiment, in order to ensure that the suture 5 can be cut, the cutting knife 222 is made into an arc structure so that it can fit onto the inner wall of the drainage tube 4. After fitting, on the one hand, it can prevent the drainage tube 4 from being cut, and on the other hand, it can enable the cutting knife 222 to contact the suture 5 and perform cutting. At the same time, a wedge-shaped opening 2221 is provided on the inner side of the lower end of the cutting knife 222. The wedge-shaped opening 2221 slopes from the inner wall towards the outer wall. Generally speaking, the cutting edge slopes towards the outside. The outer wall fits the drainage tube 4, and after the inner wall is inclined, it is used for cutting. The forward-facing cutting edge is mainly used for moving back and forth to cut the suture 5. However, in actual use, the forward cutting may press the suture 5 between the cutting knife 222 and the drainage tube 4, resulting in cutting failure. Therefore, rotational cutting is now required to cut the suture 5. So, a side cutting edge 2222 is provided on the side wall of the cutting knife 222. By setting the side cutting edge 2222, rotational cutting can be performed, and the suture 5 can be cut complementarily by forward-backward cutting and rotational cutting to ensure the effectiveness of cutting.

[0032] In addition, in this embodiment, there are mainly two connection methods for the rotating rod 221 and the cutting knife 222. One is that the cutting knife 222 is fixedly installed at the end of the rotating rod 221. The fixedly installed cutting knife 222 can move back and forth for cutting by means of inclined cutting after rotation. Specifically, as Figure 8 shown, the cutting knife 222 in the figure performs cutting by means of inclined contact after rotation. It can completely fit the drainage tube 4 for front-back cutting, and the problem that the suture 5 is pressed between the cutting knife 222 and the drainage tube 4 will not occur. However, this method has a defect that only a specific angle of rotation can achieve rotational cutting.

[0033] To solve the above technical problems, in this embodiment, the cutting knife 222 is movably installed at the end of the rotating rod 221. By the movable setting, the cutting knife 222 can completely fit on the drainage tube 4 for front-back cutting and rotational cutting. Especially after the cutting knife 222 rotates and fits onto the drainage tube 4, the position of the cutting knife 222 is relatively restricted, and effective cutting can be achieved.

[0034] In addition, an arc-shaped threaded plate 12 is provided at the rear end of the fixed cylinder. A tightening sleeve 13 is movably mounted on the arc-shaped threaded plate 12. By rotating to control the forward and backward movement of the tightening sleeve 13, the inward clamping or relaxation of the arc-shaped threaded plate 12 is controlled. The method of fixing and restricting through threaded rotation belongs to the prior art and will not be elaborated here. Additionally, in order to further enhance the clamping effect, a gasket or rubber sheet can be fixedly mounted on the arc-shaped threaded plate 12 to increase friction and ensure the stability of clamping.

[0035] Embodiment 3

[0036] In this embodiment, in order to prevent the residual air and liquid in the drainage tube 4 from being pushed back into the patient's body during the process of putting the entire device in, the present invention makes the operation cylinder 2 into a hollow structure to balance the air pressure and ensure that air does not flow inward. At the same time, a water-absorbing cotton 14 is installed on the side wall of the fixed tube 1 near one end of the tapered sleeve 15. By providing the water-absorbing cotton 14, the residual liquid on the wall of the drainage tube 4 is adsorbed to prevent it from collecting and flowing back into the patient's body during the pushing process.

[0037] Also in this embodiment, the drainage tube extractor is also equipped with a C-shaped sleeve 3. By providing the C-shaped sleeve 3, the drainage tube 4 can be sleeved from the outside, that is, after the entire device is put in, the C-shaped tube is put in. After being put in, the drainage tube 4 can be clamped by the C-shaped tube, and the position with the suture 5 can be clamped. After clamping and then cutting, it can effectively prevent further damage to the skin and pain to the patient caused by the pulling of the suture 5 during the cutting process. At the same time, a fixing belt 31 is fixedly mounted on the end face of the C-shaped sleeve 3. A magic tape is provided on the outside of the fixing belt 31 for sticking. At the same time, a soft magnetic strip 311 is provided inside the fixing belt 31. A soft magnetic strip 311 is also provided on the outer side wall of the C-shaped sleeve 3 and has the opposite magnetic polarity to the soft magnetic strip 311 provided inside the fixing belt 31. By providing the soft magnetic strip 311, the fixing effect is enhanced, so that the C-shaped sleeve 3 can completely fix the suture 5 and greatly reduce the pulling during the cutting process.

[0038] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not elaborate all the details and do not limit the invention to the specific embodiments described.

Claims

1. A drainage tube extractor, characterized in that: include: Fixed tube, operating tube; The fixed sleeve has a circumferential array of limit grooves on the side wall, the operating cylinder is movably mounted on the limit grooves, and a cutting assembly is movably mounted on the end of the operating cylinder, the cutting assembly includes a rotating rod and a cutting knife; the rotating rod is movably mounted on the outer side wall of the operating cylinder, the cutting knife is mounted on the end of the rotating rod, and the cutting knife is mounted parallel to the operating cylinder, and the operating cylinder is controlled to rotate clockwise or counterclockwise by controlling the extension and contraction of the operating cylinder to control the cutting knife to approach the drainage tube wall to cut the suture.

2. A drainage tube extractor according to claim 1, characterized in that: The cutting knife is an arc-shaped structure, and a wedge-shaped opening is arranged on the inner side of the lower end of the cutting knife, and the wedge-shaped opening is inclined from the inner wall to the outer wall; and a side cutting edge is arranged on the side wall of the cutting knife.

3. The drainage tube extractor according to claim 1, characterized in that: The cutting knife is fixedly mounted on the end of the rotating rod.

4. The drainage tube extractor according to claim 1, characterized in that: The cutting knife is movably mounted on the end of the rotating rod.

5. The drainage tube extractor according to claim 1, characterized in that: The rear end of the fixed cylinder is provided with an arc-shaped threaded plate, on which an elastic sleeve is movably mounted, and the arc-shaped threaded plate is controlled to be clamped inward or loosened by rotating the elastic sleeve to control the forward and backward movement.

6. The drainage tube extractor according to claim 1, characterized in that: The front end of the fixed cylinder is fixedly connected with a conical sleeve, and the conical sleeve is inclined inwardly; water-absorbing cotton is installed on the side wall close to one end of the conical sleeve.

7. The drainage tube extractor according to claim 1, characterized in that: The operating cylinder is a hollow structure, and a handle is fixedly installed at the rear end of the operating cylinder.

8. The drainage tube extractor according to claim 1, characterized in that: The drainage tube extractor is also equipped with a C-shaped sleeve, a fixing belt is fixedly installed on the end surface of the C-shaped sleeve, a soft magnetic strip is arranged inside the fixing belt, and a soft magnetic strip is also arranged on the outer wall of the C-shaped sleeve.

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