CN117379669A - Multi-channel anti-blocking drainage catheter - Google Patents

Abstract

The invention discloses a multi-channel anti-blocking drainage catheter which comprises a circular pipe section and a multi-channel drainage section, wherein one end of the circular pipe section is connected with the multi-channel drainage section, a drainage total channel is arranged in the circular pipe section, a core body is arranged in the multi-channel drainage section, at least one open channel and at least one closed channel are arranged around the core body in a surrounding mode, the ends of the open channel and the closed channel are communicated with the drainage total channel, and at least one communicating part is arranged on the core body and is communicated with the open channel and the closed channel. According to the invention, the collected waste liquid can bypass the blocking channel and be discharged from other unblocked channels through the communication function of the communication part, so that the blocking problem in the use of the drainage catheter is effectively solved.

Description

Multi-channel anti-blocking drainage catheter

Technical Field

The invention belongs to the technical field of drainage catheters, and particularly relates to a multichannel anti-blocking drainage catheter.

Background

The drainage catheter is used for clinically cleaning the cavity or newly forming body fluid accumulated in the cavity after surgical operation, guiding pus, waste blood and waste liquid accumulated between human tissues or in the cavity to be discharged out of the body, preventing postoperative infection and promoting wound healing.

At present, the traditional drainage catheter used clinically is single in structure of a drainage channel designed universally, and is easy to be blocked by fragments, blood clots or granula of human tissues, so that a drainage catheter passage cannot exert a drainage effect, the drainage effect is not ideal, the traditional drainage catheter is blocked in clinical use and needs to be replaced, and therefore the risk of postoperative infection is increased, and a plurality of inconveniences are caused. One study showed that conventional drainage catheters may become occluded 1.52 days after surgery, with 20 out of 21 cases studied using conventional drainage catheters containing blockages associated with human tissue growth. Because traditional drainage tube drainage channel structure is single, each drainage channel that is equipped with on it is not intercommunicated, if the jam takes place at any one point on such drainage channel, then liquid such as waste liquid, waste blood can't bypass and stop up and accomplish the drainage, this has just hindered the function of drainage pipe, and traditional drainage tube just can't clear away liquid such as sufficient waste liquid, waste blood like this, and this increases postoperative infection and the risk of readmission.

Chinese patent application number 2019201541686 discloses a prevent blockking up drainage tube, prevent blockking up drainage tube includes: a catheter portion and a drainage portion; an internal channel penetrating the catheter and the drainage part; the anti-blocking groove is arranged on the outer surface of the drainage part and extends continuously in the axial direction and the circumferential direction of the drainage part respectively; the in-groove drainage holes are arranged in the anti-blocking grooves, and the in-groove drainage holes are communicated with the anti-blocking grooves and the internal channels.

According to the scheme, the drainage holes are formed in the grooves, so that waste liquid is guided into the internal channels of the drainage catheter through the drainage holes in the grooves, and the continuous drainage effect is achieved. Although this kind of scheme can play the effect of continuous drainage, its shortcoming lies in the waste liquid that need suck through the structure of hole, and this kind of structure can make drainage speed slow down, still has a single internal channel in the drainage section moreover, still can not reach the effect of continuous drainage after the internal channel takes place to block up in this drainage section.

Disclosure of Invention

In order to solve the problems, the invention provides a multi-channel anti-blocking drainage catheter which comprises a circular pipe section and a multi-channel drainage section, wherein one end of the circular pipe section is connected with the multi-channel drainage section, a drainage total channel is arranged in the circular pipe section, a core body is arranged in the multi-channel drainage section, at least one open channel and at least one closed channel are arranged around the core body in a surrounding mode, the ends of the open channel and the closed channel are communicated with the drainage total channel, and at least one communicating part is arranged on the core body and is communicated with the open channel and the closed channel.

Preferably, one end of the circular tube section, which is close to the multi-channel drainage section, is provided with a transition section, and the outer surface of the transition section is provided with an anti-slip layer.

Preferably, an air bag is arranged on the outer surface of one end, close to the multi-channel drainage section, of the circular tube section, and an inflation channel communicated with the air bag is arranged in the drainage total channel.

Preferably, the section of the closed channel is in a fan-shaped structure.

Preferably, the cross section of the multichannel drainage section is of a circular structure, and the core body is of a Y-shaped structure.

Preferably, the cross section of the multichannel drainage section is of a circular structure, and the core body is of a cross-shaped structure.

Preferably, the cross section of the multichannel drainage section is of an oval structure, and the core body is of a double-cross structure.

Preferably, the communicating part comprises a first communicating cavity, a second communicating cavity and a third communicating cavity, wherein one ends of the first communicating cavity, the second communicating cavity and the third communicating cavity are intersected, the three communicating cavities form a Y-shaped structure, the included angles of the three communicating cavities are the same, one ends of the first communicating cavity, the second communicating cavity and the third communicating cavity, which are far away from the intersection point, are respectively communicated with the three closed channels, and three included angle parts formed by the first communicating cavity, the second communicating cavity and the third communicating cavity are respectively communicated with the three open channels.

Preferably, the communicating part comprises an annular cavity, three first communicating holes and three second communicating holes are formed in the periphery of the annular cavity, the annular cavity is respectively communicated with three closed channels through the three first communicating holes, the annular cavity is respectively communicated with three open channels through the three second communicating holes, and the first communicating holes and the second communicating holes are of a bending structure and are consistent in bending direction.

Preferably, the outer side wall and the inner side wall of the circular tube section and the multichannel drainage section are respectively provided with an antibacterial layer.

The invention has the advantages that:

1. this scheme is when carrying out drainage, can more comprehensive collect internal waste liquid through open passageway and closed passageway, promotes drainage effect, guarantees drainage speed.

2. In the scheme, the open channels are communicated with the closed channels at intervals, when one channel or a certain point on the channel is blocked by human tissue fragments or granulation, collected waste liquid can be discharged from other unblocked channels by bypassing the blocking through the communication function of the communication parts, and the blocking problem in the use of the drainage catheter is effectively solved. While the closed channel prevents tissue fragments or granulation from growing into the channel.

3. The section of the closed channel in the scheme is of a fan-shaped structure, and the fan-shaped section can reduce the resistance of the fluid in the pipeline, thereby being beneficial to reducing the friction loss of the fluid and enabling the fluid to pass through the pipeline more easily. The scalloped cross-section also reduces the likelihood of some shape and edges accumulating material, which reduces the risk of clogging the interior of the pipe.

4. In the scheme, the anti-slip structure is arranged on the drainage catheter, so that the drainage catheter can be prevented from slipping out of the body.

5. In the scheme, the inner wall and the outer wall of the drainage catheter are provided with the structure with the physical layer capable of achieving the antibacterial effect, and the skin infection of the cavity and the puncture point can be effectively reduced.

Drawings

Fig. 1 is an overall external configuration diagram of embodiment 1 of the present invention.

Fig. 2 is a sectional view of a circular tube segment according to embodiment 1 of the present invention.

FIG. 3 is a cross-sectional view of a multi-channel drainage segment according to example 1 of the present invention.

Fig. 4 is a sectional view of a multi-channel drainage segment with a communication portion according to embodiment 1 of the present invention.

Fig. 5 is a sectional view of a multi-channel drainage segment with a communication portion according to embodiment 2 of the present invention.

Fig. 6 is an overall external configuration diagram of embodiment 3 of the present invention.

Fig. 7 is a sectional view of a circular tube segment according to embodiment 3 of the present invention.

FIG. 8 is a cross-sectional view of a multi-channel drainage segment according to example 3 of the present invention.

Fig. 9 is a sectional view of a multi-channel drainage segment with a communication portion according to embodiment 3 of the present invention.

FIG. 10 is a cross-sectional view of a multi-channel drainage segment according to example 4 of the present invention.

Fig. 11 is a sectional view of a multi-channel drainage segment with communication section according to embodiment 4 of the present invention.

In the figure: 1 a circular tube section, 2 a multi-channel drainage section, 3 a drainage total channel, 4 a core body, 5 an open channel, 6 a closed channel, 7 a communication part, 8 a transition section, 9 an anti-slip layer, 10 an air bag, 11 an inflation channel, 12 a first communication cavity, 13 a second communication cavity, 14 a third communication cavity, 15 a ring cavity, 16 a first communication hole, 17 a second communication hole, 18 a closed channel G, 19 a closed channel H, 20 a closed channel a, 21 a closed channel B, 22 a closed channel c, 23 a closed channel d, 24 an open channel a, 25 an open channel B, 26 an open channel c, 27 an open channel d, 28 an open channel e, 29 an open channel f, 30 a communication part A, 31 a communication part B.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

As shown in fig. 1-4, a multi-channel anti-blocking drainage catheter comprises a circular tube section 1 and a multi-channel drainage section 2, wherein the circular tube section 1 and the multi-channel drainage section 2 are integrally formed through silica gel extrusion without adhesive connection. The inside at pipe section 1 is equipped with drainage total channel 3, and multichannel drainage section 2 comprises inside core 4 and outside pipe wall, is equipped with closed passageway 6 in the inside of multichannel drainage section 2, has seted up open channel 5 on the pipe wall of multichannel drainage section 2, and closed passageway 6 and open channel 5 all encircle the central point setting of core 4. The closed channel 6 and the open channel 5 are communicated with the drainage total channel 3, the closed channel 6 and the open channel 5 are arranged at the body fluid drainage position, and body fluid is drained from the drainage total channel 3 after passing through the closed channel 6 and the open channel 5. The drainage total channel 3 is of a circular tubular structure, so that body fluid in the closed channel 6 and the body fluid in the open channel 5 can enter the drainage total channel 3.

The closed channel 6 is a channel positioned in the multichannel drainage section 2, the section of the closed channel is of a fan-shaped structure, and the fan-shaped section can reduce the resistance of body fluid in the pipeline, thereby being beneficial to reducing the friction loss of the body fluid and enabling the body fluid to pass through the pipeline more easily. The fan-shaped cross section also reduces the likelihood of accumulation of material in some shapes and edges, and reduces the risk of blockage inside the pipe. The open channel 5 is a linear groove structure formed on the outer surface of the drainage catheter, the resistance of the channel can be reduced by the channel of the linear groove structure, the drainage efficiency of the channel is improved, and body fluid can be quickly drained from the open channel 5 to the drainage total channel 3. Through setting up a plurality of open channels 5 and closed passageway 6 at multichannel drainage section 2, can more comprehensive collect internal waste liquid when the drainage, promote the drainage effect, guarantee drainage speed.

Referring to fig. 4, at least one communicating portion 7 is further provided in the middle of the core 4, the communicating portion 7 is of a cavity structure, the communicating portion 7 communicates with the closed channel 6 and the open channel 5, and when a certain channel is blocked, body fluid drained from the channel is communicated to another channel through the communicating portion 7 and drained from the other channel. The communicating portion 7 can evenly set up a plurality of along the axial of multichannel drainage section 2 to avoid single communicating portion 7 to take place to block up the back, can't play the effect of intercommunication, just can't realize the effect of continuous drainage yet.

In this embodiment, three closed channels 6 and three open channels 5 are provided, and the three open channels 5 are uniformly arranged on the multi-channel drainage section 2, and the core 4 in the multi-channel drainage section 2 has a Y-shaped structure, so that the structural strength of the multi-channel drainage section 2 can be increased by the Y-shaped structure, and external pressure or impact can be better resisted. Five communicating portions 7 are axially and equidistantly arranged on the core 4, and each communicating portion 7 is identical in structural size and is communicated with the three closed channels 6 and the three open channels 5. In this embodiment, the communicating portion 7 includes a first communicating cavity 12, a second communicating cavity 13 and a third communicating cavity 14, where one ends of the first communicating cavity 12, the second communicating cavity 13 and the third communicating cavity 14 are intersected, and the three communicating cavities form a Y-shaped structure and have the same included angle, and one ends of the first communicating cavity 12, the second communicating cavity 13 and the third communicating cavity 14, which are far away from the intersection point, are respectively communicated with the three closed channels 6, and three included angle portions formed by the first communicating cavity 12, the second communicating cavity 13 and the third communicating cavity 14, which are mutually communicated with the three open channels 5, respectively. The Y-shaped cavity helps to avoid local blockage in the communication portion 7, and if the flow of liquid in a certain area of the communication portion 7 is blocked, the communication ports in other positions can continue to maintain the flow of liquid.

In the embodiment, with reference to fig. 1, an anti-slip layer 9 with a length of about 60mm is arranged at one end of the circular tube section 1 at the transition position of the circular tube section 1 and the multi-channel drainage section 2, and the surface of the anti-slip layer 9 is slightly rough, so that the friction force between the position of the drainage catheter and skin tissues can be increased, and the drainage tube is effectively prevented from sliding off. In the embodiment, the inner wall and the outer wall of the whole drainage catheter are coated with the antibacterial layers, so that the skin infection of the cavity and the puncture point can be effectively reduced. The whole drainage catheter can be further provided with a developing line penetrating through the whole drainage tube, so that the drainage tube can be conveniently displayed at the in-vivo position under X-rays.

When drainage operation is implemented in operation, all the multi-channel drainage sections 2 and part of the circular tube sections 1 are placed at the position where drainage is needed, and the anti-skid layer 9 is placed at the skin position of the puncture point so as to prevent the drainage tube from sliding out. Under the action of negative pressure, the open channel 5, the closed channel 5 and the communicating part 7 of the multi-channel drainage section 2 absorb pus, waste blood and waste liquid in all directions, flow into the circular channel 3 of the circular pipe section 1, and drain out of the body.

In this embodiment, through open passageway 5 and closed passageway 6 can more comprehensive collect internal waste liquid, promote drainage effect, guarantee drainage speed. Meanwhile, the open channel 5 is communicated with the closed channel 6 through the spaced communication part 7, when one channel or a certain point on the channel is blocked by human tissue fragments or granulation, collected waste liquid can bypass the blocking and be discharged from other unblocked channels through the communication function of the communication part, and the blocking problem in the use of the drainage catheter is effectively solved. While the closed channel 6 is able to prevent tissue fragments or granulation from growing into the channel.

Example 2

Referring to fig. 5, this embodiment has the same portion as embodiment 1, and differs from embodiment 1 in that the structure of the communicating portion 7 is different, the communicating portion 7 includes an annular chamber 15, three first communicating holes 16 and three second communicating holes 17 are provided around the annular chamber 15, the annular chamber 15 communicates with the three closed passages 6 through the three first communicating holes 16, respectively, the annular chamber 15 communicates with the three open passages 5 through the three second communicating holes 17, respectively, and the first communicating holes 16 and the second communicating holes 17 are both of a curved structure and the curved directions are identical.

In the present embodiment, when a certain passage is blocked, the body fluid drained in the passage enters the communicating portion 7 through the corresponding communicating hole, and as shown by an arrow in fig. 5, all the body fluid entering the communicating portion 7 flows in the direction of the arrow, and then flows into the corresponding passage from the remaining communicating holes. The body fluid can be split through the entire annular cavity 15, thereby reducing the speed difference generated in the cavity, improving the uniformity of the fluid, and helping to split the body fluid uniformly. The curved communication hole and the annular cavity 15 are designed to reduce the resistance of the body fluid in the communication portion 7, thereby reducing the frictional loss of the body fluid. The structure of the annular cavity 15 also makes it possible to avoid accumulation of body fluid generated in a partial region of the communication portion 7, reducing the possibility of clogging of the communication portion 7, compared with embodiment 1.

Example 3

Referring to fig. 6-9, a multi-channel anti-blocking drainage catheter comprises a circular tube section 1 and a multi-channel drainage section 2, wherein one end of the circular tube section 1 is connected with the multi-channel drainage section 2, a drainage total channel 3 is arranged in the circular tube section 1, a core 4 is arranged in the multi-channel drainage section 2, four open channels 5 and four closed channels 6 surround the core 4, the ends of the open channels 5 and the closed channels 6 are communicated with the drainage total channel 3, at least five communicating parts 7 are arranged on the core 4, and each communicating part 7 is communicated with the open channels 5 and the closed channels 6. An air bag 10 is arranged on the outer surface of one end, close to the multichannel drainage section 2, of the circular pipe section 1, and an inflation channel 11 communicated with the air bag 10 is arranged in the drainage total channel 3.

In this embodiment, the structure of the core body 4 is a cross-shaped structure, compared with embodiment 1, more body fluid drainage channels are provided, so that body fluid can flow in multiple directions, flexibility of the drainage system is improved, different working conditions and requirements are met, and the cross-shaped structure can better resist external pressure and impact.

In this embodiment, the anti-slip layer 9 is replaced by the air bag 10, after the drainage catheter is placed below the skin tissue, the air bag 10 is inflated through the inflation channel 11 to expand the drainage catheter below the skin tissue, and the drainage catheter can be prevented from sliding out of the body.

Example 4

10-11, a multichannel anti-blocking drainage catheter comprises a circular tube section 1 and a multichannel drainage section 2, wherein one end of the circular tube section 1 is connected with the multichannel drainage section 2, a drainage total channel 3 is arranged in the circular tube section 1, a core 4 is arranged in the multichannel drainage section 2, the cross section of the multichannel drainage section 2 in the embodiment is of an oval structure, and the core 4 is of a double-cross structure. Six closed channels and six open channels are arranged in the multi-channel drainage tube, wherein the six closed channels are composed of a closed channel G18 and a closed channel H19 which are arranged up and down at the middle position of the multi-channel drainage tube, a closed channel a20 and a closed channel b21 which are arranged up and down at the left side position of the multi-channel drainage tube, and a closed channel 22 and a closed channel d23 which are arranged up and down at the left side position of the multi-channel drainage tube. The six open channels consist of an open channel a24, an open channel b25, an open channel c26 on the left side of the multichannel draft tube, an open channel d27, an open channel e28 and an open channel f29 on the right side of the multichannel draft tube.

The left sides of the closed channel G18 and the closed channel H19 are communicated with a communication portion a30, and the right sides of the closed channel G18 and the closed channel H19 are communicated with a communication portion B31. The open channel a24, the open channel B25, the open channel c26, the closed channel a20 and the closed channel B21 are all communicated with the communicating part A30, and the open channel d27, the open channel e28, the open channel f29, the closed channel c22 and the closed channel d23 are all communicated with the communicating part B31. The embodiment provides drainage channels in multiple directions, increases the flexibility of drainage, is favorable for uniformly draining liquid, and the multichannel drainage section with the oval cross section is more suitable for being inserted into a drainage part of a human body due to the small longitudinal size of the multichannel drainage section.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A multichannel anti-blocking drainage catheter, characterized in that: including pipe section (1) and multichannel drainage section (2), the one end and the multichannel drainage section (2) of pipe section (1) are connected, the inside of pipe section (1) is equipped with drainage total channel (3), the inside of multichannel drainage section (2) is equipped with core (4), around core (4) around being equipped with at least one open passageway (5) and at least one closed passageway (6), open passageway (5) with the tip of closed passageway (6) all is linked together with drainage total channel (3), be equipped with at least one intercommunication portion (7) on core (4), intercommunication portion (7) intercommunication open passageway (5) and closed passageway (6).

2. The multi-channel anti-clogging drainage catheter of claim 1, wherein: one end of the circular tube section (1) close to the multi-channel drainage section (2) is provided with a transition section (8), and the outer surface of the transition section (8) is provided with an anti-slip layer (9).

3. The multi-channel anti-clogging drainage catheter of claim 1, wherein: the outer surface of one end of the circular tube section (1) close to the multichannel drainage section (2) is provided with an air bag (10), and an inflation channel (11) communicated with the air bag (10) is arranged in the drainage total channel (3).

4. The multi-channel anti-clogging drainage catheter of claim 1, wherein: the section of the closed channel (6) is of a fan-shaped structure.

5. The multi-channel anti-clogging drainage catheter of claim 4, wherein: the section of the multichannel drainage section (2) is of a circular structure, and the core body (4) is of a Y-shaped structure.

6. The multi-channel anti-clogging drainage catheter of claim 4, wherein: the cross section of the multichannel drainage section (2) is of a circular structure, and the core body (4) is of a cross-shaped structure.

7. The multi-channel anti-clogging drainage catheter of claim 1, wherein: the cross section of the multichannel drainage section (2) is of an oval structure, and the core body (4) is of a double-cross structure.

8. The multi-channel anti-clogging drainage catheter of claim 5, wherein: the utility model discloses a three-way communication device, including connecting portion (7), including first intercommunication chamber (12), second intercommunication chamber (13) and third intercommunication chamber (14) that one end is crossing, three intercommunication chamber forms Y font structure and contained angle the same each other, the one end that intersection was kept away from to first intercommunication chamber (12), second intercommunication chamber (13) and third intercommunication chamber (14) is respectively with three closed passageway (6) intercommunication, three contained angle parts that first intercommunication chamber (12), second intercommunication chamber (13) and third intercommunication chamber (14) formed each other communicate with three open passageway (5) respectively.

9. The multi-channel anti-clogging drainage catheter of claim 5, wherein: the communication part (7) comprises an annular cavity (15), three first communication holes (16) and three second communication holes (17) are formed in the periphery of the annular cavity (15), the annular cavity (15) is respectively communicated with three closed channels (6) through the three first communication holes (16), the annular cavity (15) is respectively communicated with three open channels (5) through the three second communication holes (17), and the first communication holes (16) and the second communication holes (17) are of a bending structure and are consistent in bending direction.

10. The multi-channel anti-occlusion drainage catheter of any of claims 1-9, wherein: the outer side wall and the inner side wall of the circular tube section (1) and the multichannel drainage section (2) are respectively provided with an antibacterial layer.