Medical catheterization aid

Abstract

The application discloses a medical catheter placement auxiliary device and belongs to the technical field of medical devices. The device comprises a shell assembly, a metal guide wire for penetrating a catheter and a handle for controlling the movement of the metal guide wire. The metal guide wire is fixedly connected with the handle. The shell assembly comprises a main shell, a sealing tube group connected with the catheter and a locking nut for controlling the clamping of the metal guide wire by the main shell. The locking nut is connected to one end of the main shell close to the handle. The sealing tube group is connected to the other end of the main shell. A urination tube is installed below the main shell. The metal guide wire penetrates through the sealing tube group and the main shell. A limiting ring is fixedly installed on the surface of the metal guide wire. A spring is connected between the sealing tube group and the limiting ring. The device can conveniently adjust the length of the metal guide wire and prevent the leakage of body fluid.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a medical catheter insertion aid. Background Technology

[0002] To address the high failure rate of catheterization, a guidewire-assisted insertion technique has been developed clinically. This technique involves pre-inserting a rigid metal guidewire into the lumen of the catheter as a support. The rigidity of the guidewire helps the flexible catheter pass smoothly through bends and narrow sections of the urethra. Once the catheter reaches the bladder, the guidewire is then withdrawn from the catheter.

[0003] However, this conventional guidewire-assisted placement method has revealed the following problems in actual operation: (1) After the operator pushes in the guidewire, he is unable to lock it after it reaches the predetermined position. The operator still needs to hold the guidewire to maintain its position. (2) The operator needs to manually pull the guidewire back. The process of manually pulling out the guidewire requires the operator to use both hands, which increases the complexity of the operation and the risk of contamination. (3) Clinically, loose connection between the urinary catheter and the drainage device is one of the common causes of urinary leakage. The leaked bodily fluids (urine) not only contaminate bedding and the operating environment, but also increase the risk of urinary tract infection in patients. Some existing solutions attempt to solve the leakage problem by wrapping the catheter with adhesive tape, but the effect is not ideal, and urine leakage still occurs. Based on this, the present invention designs a medical catheter insertion aid to solve the above problems. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a medical catheter insertion aid.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A medical catheter insertion aid includes a housing assembly, a metal guidewire for inserting a urinary catheter, and a handle for controlling the movement of the metal guidewire, wherein the metal guidewire is fixedly connected to the handle. The housing assembly includes a main housing, a sealing tube assembly connected to the catheter, and a locking nut for controlling the clamping of the metal guide wire by the main housing. The locking nut is connected to one end of the main housing near the handle, the sealing tube assembly is connected to the other end of the main housing, and a urination tube is installed below the main housing. The metal guide wire passes through the sealing tube assembly and the main housing. A limit ring is fixedly installed on the surface of the metal guide wire. A spring is connected between the sealing tube assembly and the limit ring. Furthermore, a first connecting tube is fixedly installed below the main housing, the urination tube is fixedly sleeved on the surface of the first connecting tube, a first threaded tube is integrally formed at one end of the main housing near the handle, and a plurality of locking claws for clamping the metal guide wire are integrally formed at the end of the first threaded tube, and the locking nut is threadedly connected to the surface of the first threaded tube. Furthermore, the sealing tube assembly includes a smooth tube, a second connecting tube, a first sealing ring and a second sealing ring for preventing leakage of bodily fluids. The first sealing ring and the second sealing ring are both fixedly fitted in an annular groove opened on the surface of the smooth tube. The two ends of the spring abut against the limiting ring and the smooth tube respectively. The end of the second connecting tube opposite to the second sealing ring is connected to the second connecting tube. The catheter is fixedly fitted on the surface of the second connecting tube. Furthermore, a drain hole is provided below the smooth tube, and the first sealing ring and the second sealing ring are symmetrically distributed on both sides of the drain hole; Furthermore, a second threaded tube is fixedly connected between the second connecting tube and the smooth tube. A threaded groove is opened at the end of the main housing away from the first threaded tube. The second threaded tube is threadedly connected in the threaded groove opened at the end of the main housing away from the first threaded tube. A knob is fixedly installed on the surface of the second connecting tube to facilitate the rotation of the second threaded tube. Furthermore, the smooth tube has an integrally formed tapered structure at the end opposite to the first sealing ring, which facilitates insertion into the threaded hole; Furthermore, a fixing tube for connecting a metal guide wire is fixedly installed on the surface of the handle. A screw is threaded onto the surface of the fixing tube, and a connecting hole is opened on the surface of the metal guide wire, through which the screw passes. Furthermore, the metal guidewire is a hollow structure, and an image acquisition module for observing in vivo catheter image data is encapsulated at the end of the metal guidewire away from the connection hole.

[0006] Furthermore, the image acquisition module includes: The protective sleeve is fixedly connected to the metal guide wire; A miniature camera, fixedly connected to a protective sleeve, is used to collect image data from an internal urinary catheter; Miniature LED lights are fixedly installed next to the metal guide wire. Multiple miniature LED lights are symmetrically distributed about the center of the miniature camera to provide ring-shaped supplementary lighting to improve the imaging effect in low-light environments. The display screen, fixedly attached to the surface of the handle, is used to process and transmit image signals to the mobile terminal. The control switch is fixedly installed in a recessed groove on the top of the main housing and is used to control the opening and closing of the miniature camera and miniature LED light; The data cable is electrically connected between the miniature camera and the display screen, and runs through the interior of a metal guide wire; The battery, fixedly installed inside the handle, is used to power the miniature camera and miniature LED lights.

[0007] Furthermore, the end of the metal guide wire away from the handle is curved, and the surface of the metal guide wire is marked with scale markings.

[0008] Compared to existing technologies, the advantages of this invention are as follows: The main housing design allows for easy one-handed gripping by the operator, facilitating operation of the handle with the other hand. The handle allows for easy control of the metal guidewire's forward extension and retraction, adjusting its length according to the different lengths of the catheter. During this time, the spring is compressed. Through the coordinated design of the limiting ring, spring, and sealing tube assembly, when the catheter reaches the designated position, the operator releases the handle. The spring's elastic deformation then automatically retracts the metal guidewire, assisting in its removal from the body. When bodily fluids flow from the catheter, the sealing tube assembly guides the fluids into the urine bag, preventing leakage from the end of the main housing near the handle. The locking nut, when the metal guidewire extends forward to its designated position, allows the main housing to clamp the guidewire, thus securing its position. This eliminates the need for the other hand to be constantly on the handle, freeing up the operator's other hand. This solves the problems of inconvenient guidewire adjustment and easy fluid leakage, providing easy adjustment of the guidewire length and preventing fluid leakage. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0010] Figure 1 This is a perspective view of a medical catheter insertion aid according to the present invention; Figure 2 This is a partial perspective view of a medical catheter insertion aid according to the present invention; Figure 3 This is a schematic diagram showing the disassembled housing assembly of the present invention; Figure 4 This is a schematic diagram showing the disassembled metal guide wire and handle of the present invention; Figure 5 This is a schematic diagram showing the disassembly of the metal guide wire and the miniature camera of the present invention; Figure 6 This is a longitudinal sectional view of the present invention; Figure 7 This is a cross-sectional view of the present invention.

[0011] The labels in the diagram represent: 1. Urinary catheter; 2. Urinary drain tube; 3. Housing assembly; 31. Main housing; 311. First connecting tube; 312. Threaded hole; 313. First threaded tube; 314. Locking jaw; 315. Settling groove; 32. Sealing tube assembly; 321. Smooth tube; 3211. Drain hole; 3212. Conical structure; 322. Second threaded tube; 323. Second connecting tube; 324. Knob; 325. First sealing ring; 326. Second sealing ring; 33. Locking nut; 4. Handle; 41. Fixing tube; 42. Screw; 5. Metal guide wire; 51. Connecting hole; 52. Limiting ring; 53. Spring; 6. Miniature camera; 7. Miniature LED light; 8. Control switch; 9. Display screen. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0013] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-7 A medical catheter insertion aid includes a housing assembly 3, a metal guide wire 5 for inserting a urinary catheter 1, and a handle 4 for controlling the movement of the metal guide wire 5, wherein the metal guide wire 5 is fixedly connected to the handle 4. The housing assembly 3 includes a main housing 31, a sealing tube assembly 32 connected to the catheter 1, and a locking nut 33 for controlling the clamping of the metal guide wire 5 by the main housing 31. The locking nut 33 is connected to one end of the main housing 31 near the handle 4, and the sealing tube assembly 32 is connected to the other end of the main housing 31. A urination tube 2 is installed below the main housing 31. The metal guide wire 5 passes through the sealing tube assembly 32 and the main housing 31. A limiting ring 52 is fixedly installed on the surface of the metal guide wire 5. A spring 53 is connected between the sealing tube assembly 32 and the limiting ring 52. The end of the metal guide wire 5 away from the handle 4 is provided with an arc, and the surface of the metal guide wire 5 is provided with scale markings. In this embodiment, when a medical catheter insertion aid is in normal use, the main housing 31 is designed to be easy for the operator to hold with one hand, thus facilitating the operation of the handle 4 with the other hand. The handle 4 allows the operator to control the forward extension and retraction of the metal guidewire 5, adjusting its length according to the different lengths of the catheter 1. At this time, the spring 53 is in a compressed state. Through the coordinated arrangement of the limiting ring 52, the spring 53, and the sealing tube assembly 32, when the catheter 1 reaches the designated position, the operator releases the handle 4. At this time, the elastic deformation of the spring 53 drives the metal guidewire 5 to automatically retract backward. The guide wire 5 is used to assist in the removal of the metal guide wire 5 from the body. When bodily fluids flow out of the urinary catheter 1, the sealing tube assembly 32 is used to guide the bodily fluids into the urine bag, preventing the bodily fluids from leaking from the end of the main housing 31 near the handle 4. With the locking nut 33, after the metal guide wire 5 has extended forward to the correct position, rotating the locking nut 33 can control the main housing 31 to clamp the metal guide wire 5, thereby making it easier to fix the position of the metal guide wire 5. The other hand does not need to be kept in the handle 4, which frees up the other hand of the operator. It has the characteristics of easy adjustment of the length of the metal guide wire 5 and prevention of bodily fluid leakage.

[0014] Example 2: In some embodiments, such as Figures 1-7 As shown, in a preferred embodiment of the present invention, a first connecting pipe 311 is fixedly installed below the main housing 31, the urination tube 2 is fixedly sleeved on the surface of the first connecting pipe 311, a first threaded pipe 313 is integrally formed at one end of the main housing 31 near the handle 4, and a plurality of locking claws 314 for clamping the metal guide wire 5 are integrally formed at the end of the first threaded pipe 313, and the locking nut 33 is threadedly connected to the surface of the first threaded pipe 313. The sealing tube assembly 32 includes a smooth tube 321, a second connecting tube 323, a first sealing ring 325 and a second sealing ring 326 for preventing leakage of body fluids. The first sealing ring 325 and the second sealing ring 326 are both fixedly sleeved in an annular groove opened on the surface of the smooth tube 321. The end of the second connecting tube 323 opposite to the second sealing ring 326 is connected to the second connecting tube 323. The urinary catheter 1 is fixedly sleeved on the surface of the second connecting tube 323. A drain hole 3211 is provided below the smooth tube 321. The first sealing ring 325 and the second sealing ring 326 are symmetrically distributed on both sides of the drain hole 3211. The two ends of the spring 53 abut against the limiting ring 52 and the smooth tube 321 respectively. A second threaded tube 322 is fixedly connected between the second connecting tube 323 and the smooth tube 321. A threaded groove is opened at the end of the main housing 31 away from the first threaded tube 313. The second threaded tube 322 is threadedly connected in the threaded groove opened at the end of the main housing 31 away from the first threaded tube 313. A knob 324 is fixedly installed on the surface of the second connecting tube 323 to facilitate the rotation of the second threaded tube 322. The smooth tube 321 has an integrally formed tapered structure 3212 at the end opposite to the first sealing ring 325, which facilitates insertion into the threaded hole 312.

[0015] In this embodiment, during installation, the metal guide wire 5 passes through the smooth tube 321 and the main housing 31, and emerges from the middle of the locking jaws 314. The tapered structure 3212 facilitates the insertion of the smooth tube 321, the second sealing ring 326, and the first sealing ring 325 into the main housing 31. The limiting ring 52, made of silicone or rubber, can pass through the through-hole in the smooth tube 321 through compression deformation. The second threaded tube 322 facilitates the threaded connection of the smooth tube 321 into the threaded hole 312, providing a fixing function. The first sealing ring 325 and the second sealing ring 326... The system is designed to form a seal on both sides of the drainage hole 3211, preventing bodily fluids from leaking through the gap between the smooth tube 321 and the main housing 31. The bodily fluids enter the drainage hole 3211 and the first connecting tube 311 along the gap between the metal guide wire 5 and the catheter 1, and then enter the urine bag along the urination tube 2. There are two limiting rings 52, which are distributed on the inner side of the smooth tube 321. The limiting rings 52 are used to seal the gap between the metal guide wire 5 and the smooth tube 321, preventing leakage of bodily fluids from the gap between the metal guide wire 5 and the smooth tube 321 when there is too much bodily fluid. It has the characteristics of good sealing effect.

[0016] Example 3: In some embodiments, such as Figures 2-7 As shown, in a preferred embodiment of the present invention, a fixing tube 41 for connecting a metal guide wire 5 is fixedly installed on the surface of the handle 4, a screw 42 is threadedly connected to the surface of the fixing tube 41, and a connecting hole 51 is opened on the surface of the metal guide wire 5, and the screw 42 passes through the connecting hole 51. The metal guide wire 5 is a hollow structure, and an image acquisition module for observing image data of the in vivo urinary catheter 1 is encapsulated at one end of the metal guide wire 5 that is away from the connection hole 51. The image acquisition module includes: The protective sleeve is fixedly connected to the metal guide wire 5; Miniature camera 6, fixedly connected to the protective sleeve, is used to collect image data of the internal urinary catheter 1; Miniature LED lights 7 are fixedly installed on the side of the metal guide wire 5. Multiple miniature LED lights 7 are symmetrically distributed about the center of the miniature camera 6 to provide ring-shaped supplementary lighting to improve the imaging effect in low-light environments. The display screen 9 is fixedly connected to the surface of the handle 4 and is used to process and transmit image signals to the mobile terminal. The control switch 8 is fixedly installed in the recess 315 opened above the main housing 31, and is used to control the opening and closing of the miniature camera 6 and the miniature LED light 7; The data cable is electrically connected between the miniature camera 6 and the display screen 9, and passes through the interior of the metal guide wire 5; A storage battery, fixedly installed inside the handle 4, is used to power the miniature camera 6 and the miniature LED light 7; In this embodiment, a protective sleeve is used to seal the miniature camera 6 and the miniature LED light 7 inside the front end of the metal guidewire 5. The protective sleeve is made of medical-grade transparent polymer material, which ensures that the light transmittance meets the imaging requirements and achieves biological isolation from human tissue, preventing body fluids from seeping into the guidewire and damaging electronic components. The miniature camera 6 preferably uses a miniature CMOS image sensor with a package size of no more than 1.0mm × 1.0mm and a resolution of no less than 400 × 400 pixels, which can clearly display the tissue structure of the urethral wall and the travel position of the front end of the catheter 1. The miniature LED light 7 uses a white light or near-infrared light miniature light-emitting diode, and the light emission angle matches the field of view of the miniature camera 6 to ensure that the illumination area covers the entire field of view of the camera. The data cable is an ultra-fine flexible shielded cable with an outer diameter of no more than 0 mm. The 0.3mm diameter wire is composed of multiple strands of silver-plated copper alloy stranded conductors, an insulation layer, and a braided shielding layer, providing excellent flexibility and anti-interference capabilities. The data cable extends from the output end of the miniature camera 6, along the internal hollow channel of the metal guide wire 5, passes through the inside of the handle 4, and connects to the image signal input end of the display screen 9. The control switch 8 is preferably a waterproof micro switch or membrane switch, allowing the operator to control the on / off state of the camera and lighting functions with a single finger press. The battery is preferably a rechargeable lithium-ion battery or lithium polymer battery with a capacity of 200mAh to 500mAh and an output voltage of 3.3V to 5V. A charging interface can be provided on the handle 4 for connecting to an external power source to charge the battery. When assembling the metal guidewire 5 with the handle 4, the metal guidewire 5 is inserted into the fixing tube 41, and the screw 42 is installed into the connecting hole 51, thus fixing the metal guidewire 5 to the fixing tube 41. The handle 4 allows the operator to control the forward extension and retraction of the metal guidewire 5, adjusting its length according to the different lengths of the catheter 1. At this time, the spring 53 is in a compressed state. Through the coordinated arrangement of the limiting ring 52, the spring 53, and the sealing tube assembly 32, when the catheter 1 reaches the designated position, the operator releases the handle 4. The elastic deformation of the spring 53 then causes the metal guidewire 5 to automatically retract backward, assisting in its removal from the body. During use, the operator activates the image acquisition module via the control switch 8, and the battery powers the miniature camera 6, the miniature LED light 7, and the display screen 9. The miniature LED light 7 emits a ring of light, illuminating the area inside the urethra in front of the tip of the metal guidewire 5. The miniature camera 6 acquires image data from this area, generating analog or digital image signals. The image signal is transmitted to the display screen 9 on the surface of the handle 4 via a data cable that passes through the internal cavity of the metal guide wire 5.

[0017] The image processing chip built into the display 9 processes the received image signal: first, it performs analog-to-digital conversion to convert the analog image signal into a digital signal; then, it performs white balance correction to eliminate color deviations in the image under different color temperature light sources; next, it performs gamma correction and noise reduction to optimize the contrast and clarity of the image; finally, it displays the processed video image on the screen in the form of real-time dynamic images.

[0018] During the insertion of catheter 1, the operator can observe the real-time image on the display screen 9 to intuitively see the position of the catheter 1 tip in the urethra, the tissue state of the urethral wall, and whether it has reached the bladder entrance, thereby accurately controlling the insertion direction and depth and avoiding the risk of urethral injury caused by blind operation.

[0019] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A medical catheter insertion aid, comprising a housing assembly (3), a metal guidewire (5) for inserting a urinary catheter (1), and a handle (4) for controlling the movement of the metal guidewire (5), wherein the metal guidewire (5) is fixedly connected to the handle (4), characterized in that: The housing assembly (3) includes a main housing (31), a sealing tube assembly (32) connected to the catheter (1), and a locking nut (33) for controlling the clamping of the metal guide wire (5) by the main housing (31). The locking nut (33) is connected to one end of the main housing (31) near the handle (4), and the sealing tube assembly (32) is connected to the other end of the main housing (31). A urination tube (2) is installed below the main housing (31). The metal guide wire (5) passes through the sealing tube assembly (32) and the main housing (31). A limiting ring (52) is fixedly installed on the surface of the metal guide wire (5). A spring (53) is connected between the sealing tube assembly (32) and the limiting ring (52).

2. The medical catheter insertion aid according to claim 1, characterized in that, The first connecting tube (311) is fixedly installed below the main housing (31), and the urination tube (2) is fixedly sleeved on the surface of the first connecting tube (311). The main housing (31) has a first threaded tube (313) integrally formed at one end near the handle (4). The end of the first threaded tube (313) has multiple locking claws (314) integrally formed for clamping the metal guide wire (5). The locking nut (33) is threadedly connected to the surface of the first threaded tube (313).

3. The medical catheter insertion aid according to claim 2, characterized in that, The sealing tube assembly (32) includes a smooth tube (321), a second connecting tube (323), a first sealing ring (325) and a second sealing ring (326) for preventing leakage of body fluid. The first sealing ring (325) and the second sealing ring (326) are both fixedly sleeved in an annular groove opened on the surface of the smooth tube (321). The end of the second connecting tube (323) opposite to the second sealing ring (326) is connected to the second connecting tube (323).

4. The medical catheter insertion aid according to claim 3, characterized in that, The smooth tube (321) has a drainage hole (3211) below it. The first sealing ring (325) and the second sealing ring (326) are symmetrically distributed on both sides of the drainage hole (3211). The catheter (1) is fixedly sleeved on the surface of the second connecting tube (323). The two ends of the spring (53) abut against the limiting ring (52) and the smooth tube (321) respectively.

5. The medical catheter insertion aid according to claim 4, characterized in that, A second threaded tube (322) is fixedly connected between the second connecting tube (323) and the smooth tube (321). The main housing (31) has a threaded groove at one end away from the first threaded tube (313). The second threaded tube (322) is threaded into the threaded groove at the end of the main housing (31) away from the first threaded tube (313). A knob (324) is fixedly installed on the surface of the second connecting tube (323) to facilitate the rotation of the second threaded tube (322).

6. The medical catheter insertion aid according to claim 5, characterized in that, The smooth tube (321) has a tapered structure (3212) integrally formed at the end opposite to the first sealing ring (325) to facilitate insertion into the threaded hole (312).

7. The medical catheter insertion aid according to claim 6, characterized in that, The handle (4) is fixedly mounted with a fixing tube (41) for connecting a metal guide wire (5). The fixing tube (41) is threaded with a screw (42). The metal guide wire (5) has a connecting hole (51) on its surface. The screw (42) passes through the connecting hole (51).

8. The medical catheter insertion aid according to claim 7, characterized in that, The metal guide wire (5) is a hollow structure, and an image acquisition module for observing the image data of the in vivo urinary catheter (1) is encapsulated at one end of the metal guide wire (5) away from the connection hole (51).

9. The medical catheter insertion aid according to claim 8, characterized in that, The image acquisition module includes: The protective sleeve is fixedly connected to the metal guide wire (5); A miniature camera (6) is fixedly connected to a protective sleeve and is used to collect image data of the internal catheter (1); Miniature LED lights (7) are fixedly installed on the side of the metal guide wire (5). Multiple miniature LED lights (7) are symmetrically distributed about the center of the miniature camera (6) to provide ring-shaped supplementary light to improve the imaging effect in low light environment. The display screen (9) is fixedly connected to the surface of the handle (4) and is used to process and transmit image signals to the mobile terminal; The control switch (8) is fixedly installed in the recess (315) opened above the main housing (31) and is used to control the opening and closing of the miniature camera (6) and the miniature LED light (7); The data cable is electrically connected between the miniature camera (6) and the display screen (9) and passes through the interior of the metal guide wire (5); A battery is fixedly installed inside the handle (4) to power the miniature camera (6) and the miniature LED light (7).

10. The medical catheter insertion aid according to claim 9, characterized in that, The end of the metal guide wire (5) away from the handle (4) is curved, and the surface of the metal guide wire (5) is marked with scale.

Images