Directional lavage drainage catheter
By designing a directional irrigation and drainage catheter with a porous distribution and an adjustable core, the problem of uneven penetration of hemolytic agents in the treatment of cerebral hemorrhage by existing catheters has been solved, achieving more efficient hematoma removal and reducing the risk of infection.
Patent Information
- Application Number
- CN202423149720.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing catheters are difficult to use to evenly penetrate hemolytic agents to all parts of the hematoma during the treatment of cerebral hemorrhage, resulting in poor clearance and increasing the risk of infection due to frequent changes in patient position.
A directional irrigation and drainage catheter is designed. The catheter body has multiple irrigation holes spaced apart circumferentially and axially. Combined with an adjustable core, it can realize irrigation and drainage in various directions within the cranium. The irrigation direction is controlled by rotating the core, and multiple drainage grooves prevent blockage.
It improves the uniformity and efficiency of hematoma removal, reduces the risk of infection, simplifies the procedure, and enhances treatment outcomes.
Smart Images
Figure CN223944705U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of directional irrigation drainage catheter. BACKGROUND
[0002] As a common and serious threat to human health cerebral vascular disease, in recent years, its incidence rate presents the upward trend that cannot be underestimated, has become the health "killer" that influences the life quality of numerous patients, brings heavy burden to numerous families. After cerebral hemorrhage occurs, hematoma is often formed in intracranial, these hematoma, like "compression source", produces sustained compression to surrounding brain tissue, and then triggers a series of chain reactions such as nerve function damage, seriously affects the health of patient and subsequent self-care ability. For this reason, in the treatment process of cerebral hemorrhage, timely and effectively removing intracranial hematoma, reducing intracranial pressure, become the top priority to improve patient prognosis and improve their quality of life, is the key of the whole treatment link.
[0003] In current clinical practice, directional soft channel cerebral hemorrhage treatment method is outstanding among many treatment methods with the advantages of relatively small trauma and relatively simple operation, and has obtained more extensive application. This treatment method is mainly through the accurate placement of special catheter in intracranial, then gradually discharges intracranial hematoma by the drainage function of catheter, to achieve the purpose of relieving illness.
[0004] However, in the actual application of this method, there are some problems to be solved. As for the catheter commonly used, the drainage side hole is usually arranged on both sides of the catheter in design. In the process of continuous drainage, in order to achieve better effect of eliminating hematoma as far as possible, medical staff often need to inject hemolytic agent to hematoma site. However, due to the influence of intracranial pressure and gravity, the diffusion path of hemolytic agent in intracranial will be limited, and can only dissolve blood along the direction of catheter side hole, and it is difficult to penetrate evenly to each part of hematoma.
[0005] In order to change this situation and make hemolytic agent act on the whole hematoma area more fully, medical staff usually need to turn over the patient's body position. But this seemingly simple operation has many obvious disadvantages. On the one hand, the turning of patient's body position is easy to cause the deviation of catheter position. As we know, the catheter is accurately positioned when it is placed in intracranial, and it has an accurate drainage path. Once the position changes due to turning, the accuracy will be broken, the normal drainage process will be disturbed, and the drainage efficiency will be inevitably reduced, which will affect the effect of hematoma removal.
[0006] On the other hand, frequent changes in patient position and changes in catheter position undoubtedly open the "door" for pathogens such as bacteria. External pathogens are more likely to take advantage of the opportunity to invade the human body and enter the intracranial environment, which is relatively closed and fragile, significantly increasing the risk of infection, which undoubtedly adds to the patient's recovery.
[0007] Even if some catheters attempt to improve drainage by opening more side holes in the circumferential direction, new problems still follow. Due to the flow characteristics of the liquid itself from the high pressure to the low pressure, the hemolytic agent tends to flow in the direction of lower pressure during the drainage process. Even if there are circumferential side holes, it is difficult to break through this physical characteristic limitation, and it is difficult to uniformly and comprehensively deliver the hemolytic agent to all directions in the intracranial cavity, and it is difficult to achieve comprehensive blood removal of the intracranial hematoma. In this way, the overall hematoma removal effect is always difficult to achieve the ideal state, and the patient's recovery process is naturally prone to be hindered, prolonging the patient's pain cycle and treatment time. Practical new type content
[0008] The purpose of the present application is to overcome the above-mentioned deficiencies existing in the prior art, and the present application provides a directional irrigation and drainage catheter.
[0009] The present application is realized by the following technical solutions:
[0010] A directional irrigation and drainage catheter, comprising a catheter body, a catheter head and a tube core, the catheter body has a liquid infusion cavity, the liquid infusion cavity extends along the axial direction of the catheter body and penetrates the catheter body, the catheter head is connected to the end of the catheter body and is used to block the liquid infusion cavity, the outer surface of the catheter body has a plurality of infusion holes, the plurality of infusion holes are distributed along the circumferential direction and the axial direction of the catheter body, and the plurality of infusion holes are all in communication with the liquid infusion cavity, the outer surface of the tube core has an inwardly recessed opening, the tube core is inserted into the liquid infusion cavity and can move in the liquid infusion cavity, so that the outer surface of the tube core is used to cover part of the infusion holes, and the opening is used to communicate with the remaining infusion holes.
[0011] Further, the catheter body has a plurality of drainage grooves, the plurality of drainage grooves are respectively located around the liquid infusion cavity, and the plurality of drainage grooves all extend along the axial direction of the catheter body and penetrate the catheter body, the catheter head is used to block one end of the plurality of drainage grooves, and the plurality of infusion holes distributed along the axial direction of the catheter body are all in communication with the corresponding drainage grooves.
[0012] Further, the number of drainage grooves is four, and the four drainage grooves are arranged in the catheter body along the circumferential direction of the catheter body and located at four directions of the catheter body.
[0013] Further, the catheter body comprises an inner tube, an outer tube and a plurality of connecting portions, the outer tube is sleeved on the inner tube, the liquid infusion cavity is located in the inner tube, the tube core is inserted into the inner tube, the infusion holes are penetrated through the inner tube and the outer tube along the radial direction of the catheter body, and the connecting portions are located between the inner tube and the outer tube and connected with the outer surface of the inner tube and the inner wall of the outer tube, so that the outer surface of the inner tube, the inner wall of the outer tube and the connecting portions form a plurality of drainage grooves.
[0014] Further, the catheter body comprises a drainage section and an extension section, two ends of the drainage section are connected with the catheter head and the extension section respectively, the infusion holes are located in the drainage section, and the tube core is penetrated through the extension section from the extension section and inserted into the drainage section.
[0015] Further, the directional irrigation and drainage catheter further comprises a protective sleeve, and the protective sleeve is sleeved on the outer surface of the extension section.
[0016] Further, the catheter body is bonded in the protective sleeve.
[0017] Further, the end of the catheter body away from the catheter head has a tube core mark corresponding to the C-shaped opening.
[0018] Further, the catheter head is bonded to the catheter body.
[0019] Further, the infusion holes are staggered and distributed along the circumferential direction of the catheter body.
[0020] The beneficial effects of the utility model lie in:
[0021] The directional irrigation and drainage catheter of the utility model, the infusion holes are distributed around the catheter body along the circumferential direction and the axial direction, the infusion holes around the catheter body are used for irrigation and flushing in all directions of the intracranial cavity, and the ability of the directional irrigation and drainage catheter to remove the circumferential hematoma is improved. Meanwhile, the tube core is located in the liquid infusion cavity and can be adjusted in the direction according to the user's needs, so that the outer surface of the tube core is used for covering part of the infusion holes, the opening is used for communicating with the remaining infusion holes, the irrigation and flushing pressure is concentrated in the direction of the opening, and efficient irrigation and flushing are performed in the directional direction. DRAWINGS
[0022] Figure 1 It is a three-dimensional structure schematic view of the directional irrigation and drainage catheter of the utility model embodiment.
[0023] Figure 2 It is a front view structure schematic view of the directional irrigation and drainage catheter of the utility model embodiment.
[0024] Figure 3 It is the internal structure schematic view of the directional lavage drainage catheter of the utility model embodiment.
[0025] Figure 4 It is the right view structure schematic view of the directional lavage drainage catheter of the utility model embodiment.
[0026] Figure 5 It is the internal structure schematic view of the directional lavage drainage catheter of the utility model embodiment.
[0027] Figure 6 It is the internal structure schematic view of the directional lavage drainage catheter of the utility model embodiment.
[0028] Explanation of reference signs:
[0029] Catheter body 1
[0030] Liquid filling cavity 11
[0031] Perfusion hole 12
[0032] Drainage groove 13
[0033] Inner tube 14
[0034] Outer tube 15
[0035] Connecting portion 16
[0036] Drainage section 17
[0037] Extension section 18
[0038] Tube core identification 19
[0039] Catheter head end 2
[0040] Tube core 3
[0041] Protective sleeve 4 DETAILED DESCRIPTION
[0042] The following description of the embodiments is with reference to the drawings, which illustrate specific embodiments in which the utility model can be implemented.
[0043] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the embodiment discloses a directional irrigation drainage catheter, which comprises a catheter body 1, a catheter head 2 and a tube core 3. The catheter body 1 has an irrigation cavity 11 inside, which extends along the axial direction of the catheter body 1 and penetrates through the catheter body 1. The catheter head 2 is connected to the end of the catheter body 1 and is used to block the irrigation cavity 11. The outer surface of the catheter body 1 has a plurality of irrigation holes 12, which are distributed along the circumferential direction and axial direction of the catheter body 1 and are connected to the irrigation cavity 11. The irrigation liquid will flow to the plurality of irrigation holes 12 through the irrigation cavity 11. The plurality of irrigation holes 12 are distributed along the circumferential direction and axial direction of the catheter body 1, so that the plurality of irrigation holes 12 are distributed around the catheter body 1. The irrigation and flushing in all directions of the intracranial are realized through the irrigation holes 12 around the catheter body 1, thereby improving the ability of the directional irrigation drainage catheter to remove the circumferential hematoma.
[0044] The outer surface of the tube core 3 has an inwardly recessed opening. The tube core 3 is inserted into the irrigation cavity 11 and can move in the irrigation cavity 11, so that the outer surface of the tube core 3 is used to cover part of the irrigation holes 12, and the opening is used to communicate with the remaining irrigation holes 12. The tube core 3 is inserted into the irrigation cavity 11 from the end of the catheter body 1 away from the catheter head 2. The outer surface of the tube core 3 is abutted against the inner wall surface of the irrigation cavity 11, so that the outer surface of the tube core 3 is used to cover part of the irrigation holes 12. The opening in the outer surface of the tube core 3 is used to communicate with the remaining irrigation holes 12. The irrigation liquid in the irrigation cavity 11 will flow to the irrigation holes 12 connected to the opening through the opening, thereby realizing directional irrigation and flushing. The tube core 3 is located in the irrigation cavity 11 and can be adjusted in orientation according to the user's needs, so that the outer surface of the tube core 3 is used to cover part of the irrigation holes 12. The irrigation and flushing pressure is concentrated in the direction of the opening, and efficient irrigation and flushing are realized in the directional direction. The opening direction of the tube core 3 determines the irrigation liquid direction, and can provide rigid support for the catheter body 1 when placed.
[0045] In the embodiment, the tube core 3 can rotate in the catheter body 1 to cover and block part of the irrigation holes 12. The intracranial hematoma is irrigated and drained by rotating the tube core 3 to inject and inject hemolytic agents. The rotation of the built-in tube core 3 realizes the control of irrigation in all directions, and is very convenient to use. The shape of the opening is C-shaped. The C-shaped opening direction of the tube core 3 is the irrigation port liquid or drug direction. The irrigation and flushing pressure is concentrated in the irrigation holes 12 connected to the C-shaped opening, so that efficient irrigation and flushing are realized in the directional direction.
[0046] The catheter body 1 has a plurality of drainage grooves 13, which are respectively located around the liquid infusion cavity 11 and extend along the axial direction of the catheter body 1 and penetrate the catheter body 1. The catheter head end 2 is used to block one end of the plurality of drainage grooves 13, and the plurality of infusion holes 12 distributed along the axial direction of the catheter body 1 are respectively connected with the corresponding drainage grooves 13. When the directional irrigation and drainage catheter is used, the catheter head end 2 is slowly placed towards the intracranial target point, and after reaching the target position, the irrigation direction is confirmed to be performed one by one, then the opening direction of the C-shaped port of the tube core 3 is adjusted, and then the external irrigation and flushing device is connected, the irrigation liquid or hemolytic agent liquid is pushed into the hematoma cavity through the tube core 3, and then the drainage liquid is gradually discharged outward through the drainage grooves 13. The plurality of drainage grooves 13 are respectively located around the liquid infusion cavity 11 and arranged around the catheter body 1, which facilitates the rapid drainage of the hematoma after irrigation. Meanwhile, the plurality of infusion holes 12 are respectively connected with the plurality of drainage grooves 13, thereby effectively preventing the drainage failure caused by the blockage of a single channel during the drainage process.
[0047] In the embodiment, the number of the drainage grooves 13 is four, and the four drainage grooves 13 are arranged at intervals along the circumferential direction of the catheter body 1 and located at four directions of the catheter body 1. The four drainage grooves 13 are arranged in a cross layout type and located at the four directions of the catheter body 1, which facilitates the rapid drainage of the hematoma after irrigation; the four drainage grooves 13 are independent parts, which prevents the simultaneous blockage of the four cavities.
[0048] The catheter body 1 has a communication groove extending along the axial direction of the catheter body 1, and the two ends of the communication groove are connected with the adjacent two infusion holes 12 and connected with the corresponding drainage grooves 13, thereby realizing the drainage in each direction around the catheter body 1, further facilitating the rapid drainage of the hematoma after irrigation, and effectively preventing the drainage failure caused by the blockage of a single channel during the drainage process.
[0049] The plurality of infusion holes 12 are arranged at the four directions of the catheter body 1, and the plurality of infusion holes 12 are staggered distributed along the circumferential direction of the catheter body 1. The irrigation and flushing in each direction of the intracranial cavity are realized, and the ability of the directional irrigation and drainage catheter to remove the circumferential hematoma is further improved.
[0050] Each row of infusion holes 12 corresponds to one drainage groove 13, and the drainage grooves 13 around the catheter body 1 match the infusion holes 12. The circumferentially adjacent two infusion holes 12 are arranged at an angle of 90° and have a plurality of infusion holes 12 in the same direction. The infusion holes 12 and the drainage grooves 13 are arranged in the same direction, which facilitates the reflux of the irrigation liquid.
[0051] The catheter body 1 comprises an inner tube 14, an outer tube 15 and a plurality of connecting portions 16, the outer tube 15 is sleeved on the inner tube 14, the liquid infusion cavity 11 is located in the inner tube 14, and the tube core 3 is inserted into the inner tube 14, the infusion holes 12 are radially penetrated through the inner tube 14 and the outer tube 15 along the catheter body 1, and the plurality of connecting portions 16 are located between the inner tube 14 and the outer tube 15 and connected with the outer surface of the inner tube 14 and the inner wall surface of the outer tube 15, so that the plurality of drainage grooves 13 are formed between the outer surface of the inner tube 14, the inner wall surface of the outer tube 15 and the plurality of connecting portions 16. The liquid infusion cavity 11 is located at the center of the catheter body 1 and in the inner tube 14, the plurality of connecting portions 16 are connected with the outer surface of the inner tube 14 and the inner wall surface of the outer tube 15 to form the plurality of drainage grooves 13,
[0052] In the embodiment, the catheter body 1 is an integrally formed structure, so that the processing and manufacturing are convenient, and the structural strength is high.
[0053] The catheter body 1 comprises a drainage section 17 and an extension section 18, two ends of the drainage section 17 are connected with the catheter head end 2 and the extension section 18 respectively, the plurality of infusion holes 12 are located on the drainage section 17, and the tube core 3 is penetrated through the extension section 18 from the extension section 18 and inserted into the drainage section 17. The tube core 3 can be placed from the extension section 18 into the drainage section 17 and abut against the position of the catheter head end 2, the plurality of infusion holes 12 are arranged on the drainage section 17, the C-shaped opening of the tube core 3 will be deep into the drainage section 17, and the required irrigation liquid can be transported in a single direction; the extension section 18 is in a complete tube type, and the end of the extension section 18 away from the drainage section 17 can be connected with an external infusion device.
[0054] The end of the catheter body 1 away from the catheter head end 2 has a tube core mark 19, and the tube core mark 19 corresponds to the opening. That is, the tube core mark 19 is arranged at the end of the extension section 18, the opening on the tube core 3 is aligned with the tube core mark 19, a rotating orientation guide recognition is provided for a user, and directional control of the irrigation liquid is realized. Specifically, the number of the tube core marks 19 is four and located on four orientations of the catheter body 1.
[0055] The catheter head end 2 is located at the frontmost section of the directional irrigation and drainage catheter and is in a round blunt shape, the drainage section 17 is integrally connected with the catheter head end 2, and the catheter head end 2 will block the liquid infusion cavity 11 and the plurality of drainage grooves 13. The catheter head end 2 is provided with a developer capable of being displayed under CT, which is used for identifying the orientation of the catheter in the operation.
[0056] The catheter head end 2 is bonded to the catheter body 1. The catheter head end 2 is obtained by injection molding, and the catheter head end 2 is integrally bonded with the drainage section 17 by RTV glue. The catheter body 1 is obtained by extrusion molding, and the infusion holes 12 are obtained by punching on the drainage section 17.
[0057] The orientable lavage drainage catheter further comprises a protective sleeve 4 sleeved on the outer surface of the extension section 18, which has a protective effect and covers the outer surface of the extension section 18. The protective sleeve 4 is provided with a scale, which provides an identification for the placement depth of the catheter body 1. The catheter body 1 is bonded in the protective sleeve 4, and the extension section 18 of the catheter body 1 is bonded in the protective sleeve 4 by RTV glue.
[0058] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the present application, therefore, equivalent changes made according to the claims of the present application still fall within the scope of the present application.
Claims
1. An orientable lavage drainage catheter, characterized in that, It includes a catheter body, a catheter head and a tube core, the catheter body has a liquid filling cavity inside, the liquid filling cavity extends along the axial direction of the catheter body and penetrates through the catheter body, the catheter head is connected to the end of the catheter body and is used for plugging the liquid filling cavity, the outer surface of the catheter body has a plurality of perfusion holes, the plurality of perfusion holes are distributed along the circumferential direction and the axial direction of the catheter body, and the plurality of perfusion holes are all communicated with the liquid filling cavity, the outer surface of the tube core has an inwardly recessed opening, the tube core is inserted into the liquid filling cavity and can move in the liquid filling cavity, so that the outer surface of the tube core is used to cover part of the perfusion holes, and the opening is used to communicate with the remaining perfusion holes.
2. The orientable irrigation drainage catheter of claim 1, wherein, The catheter body has a plurality of drainage grooves, the plurality of drainage grooves are respectively located around the liquid filling cavity, and the plurality of drainage grooves all extend along the axial direction of the catheter body and penetrate through the catheter body, the catheter head is used for plugging one end of the plurality of drainage grooves, and the plurality of perfusion holes distributed along the axial direction of the catheter body are all communicated with the corresponding drainage grooves.
3. The orientable irrigation drainage catheter of claim 2, wherein, The number of the drainage grooves is four, and the four drainage grooves are arranged in the catheter body along the circumferential direction of the catheter body and located at four positions of the catheter body.
4. The orientable irrigation drainage catheter of claim 2, wherein, The catheter body includes an inner tube, an outer tube and a plurality of connecting parts, the outer tube is sleeved on the inner tube, the liquid filling cavity is located in the inner tube, and the tube core is inserted into the inner tube, the perfusion holes penetrate through the inner tube and the outer tube along the radial direction of the catheter body, the plurality of connecting parts are all located between the inner tube and the outer tube and connected with the outer surface of the inner tube and the inner wall surface of the outer tube, so that the plurality of drainage grooves are formed between the outer surface of the inner tube, the inner wall surface of the outer tube and the plurality of connecting parts.
5. The orientable irrigation drainage catheter of claim 1, wherein, The catheter body includes a drainage section and an extension section, two ends of the drainage section are respectively connected to the catheter head and the extension section, the plurality of perfusion holes are located in the drainage section, and the tube core penetrates through the extension section from the extension section and is inserted into the drainage section.
6. The orientable irrigation drainage catheter of claim 5, wherein, The orientable perfusion drainage catheter further includes a protective sleeve, the protective sleeve is sleeved on the outer surface of the extension section.
7. The orientable irrigation drainage catheter of claim 6, wherein, The catheter body is bonded in the protective sleeve.
8. The orientable irrigation drainage catheter of claim 1, wherein, The end of the catheter body away from the catheter head has a tube core mark, and the tube core mark corresponds to the opening.
9. The orientable irrigation drainage catheter of claim 1, wherein, The catheter head is bonded to the catheter body.
10. The orientable irrigation drainage catheter of claim 1, wherein, The plurality of perfusion holes are staggered distributed along the circumferential direction of the catheter body.