Intestinal obstruction catheter guide head and intestinal obstruction catheter

Abstract

This utility model relates to a guide head and catheter for intestinal obstruction, comprising at least a tip, a bend, and a connecting portion. The distal end of the bend is connected to the tip, and the proximal end of the bend is connected to the connecting portion. The tip has an axially penetrating first guidewire hole and a flushing hole, and a viewing lens is disposed on the distal end face of the tip. Compared with the prior art, the advantages of this utility model are: real-time observation of the intestine is achieved through the viewing lens, reducing reliance on large auxiliary equipment, expanding application scenarios, and improving application flexibility; it also allows direct observation of intestinal obstruction, improving the effectiveness of adjuvant therapy.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a guide head for an intestinal obstruction catheter and an intestinal obstruction catheter. Background Technology

[0002] Intestinal obstruction is a common surgical emergency, often caused by various mechanical factors within, around, or outside the intestine, hindering intestinal passage. It is characterized by difficult diagnosis, complex etiologies, diverse complications, and rapid disease progression. Intestinal obstruction catheters can decompress and drain the intestines, thereby improving symptoms or creating conditions for surgery and reducing surgical risks.

[0003] Currently used intestinal obstruction catheters often require nasogastric endoscopy for auxiliary positioning before insertion into the intestine. The general insertion procedure for an intestinal obstruction catheter is as follows: after inserting the duodenum via nasogastric endoscopy, a guidewire is placed into the duodenum. The nasogastric endoscope is then withdrawn, and the intestinal obstruction catheter is slowly advanced into the patient's body along the guidewire through the nasal cavity. Under X-ray or ultrasound monitoring, the catheter is then passed through the pylorus and duodenum, finally reaching the proximal intestinal lumen of the obstruction. Intestinal obstruction catheters are commonly used in general surgery or proctology, while nasogastric endoscopy is commonly used in gastroenterology. The simultaneous use of both requires interdepartmental collaboration and places high demands on hospital management. Furthermore, whether the intestinal obstruction catheter has reached the obstruction site requires repeated confirmation using X-rays and contrast agents, posing a radiation risk to the patient. Even after successful placement, the degree of obstruction cannot be directly determined, and minimally invasive biopsies of abnormal tissues cannot be performed under direct visualization, limiting the effectiveness of adjuvant therapy.

[0004] Therefore, the currently used intestinal obstruction catheters have the following problems: they are highly dependent on visual auxiliary equipment such as transnasal gastroscopy and X-ray machines during catheter placement, which limits their application scenarios and makes them less flexible; after successful placement, they cannot directly observe intestinal obstruction, resulting in limited functionality and treatment effects. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a guide head for intestinal obstruction catheters, which can reduce the reliance on large auxiliary equipment, expand application scenarios, improve application flexibility, and directly observe intestinal obstruction, thereby improving the effect of adjuvant treatment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a guide head for an intestinal obstruction catheter, comprising at least a tip, a bend, and a connecting part, wherein the distal end of the bend is connected to the tip, the proximal end of the bend is connected to the connecting part, the tip is provided with an axially penetrating first guide wire hole and a flushing hole, and a viewing lens is provided on the distal end face of the tip.

[0007] The beneficial effects of this approach are as follows: by installing a visual lens at the tip instead of using a transnasal endoscope and X-ray machine, it reduces the requirements for site facilities, facilitates rapid treatment of critically ill patients, greatly expands application scenarios, and improves application flexibility. After successful catheter placement for intestinal obstruction, the obstruction and lesion status can be directly observed, and minimally invasive biopsies of abnormal tissues can be performed under visual guidance, improving the effectiveness of adjuvant therapy.

[0008] Furthermore, a drainage portion is provided on the distal end face of the tip at the outlet of the flushing hole, and the drainage outlet of the drainage portion faces the viewing lens.

[0009] The beneficial effects of this approach are as follows: by setting a drainage section at the outlet of the flushing hole and directing the drainage outlet of the drainage section toward the viewing lens, clean water can be used to directly flush the viewing lens before flowing into the intestine. This keeps the lens clean and prevents it from being contaminated by intestinal mucus or foreign objects, thus limiting the field of view and ensuring the accuracy of observation. This reduces the difficulty of catheter placement and treatment.

[0010] Furthermore, at least one illumination lamp is provided on the distal end face of the tip end around the viewing lens.

[0011] The advantages of this approach are: the lighting provides sufficient illumination, increases the field of view for observing the intestines, and avoids the problem of being unable to observe due to the failure of the built-in light of the camera, thus improving the safety of catheter placement and treatment.

[0012] Furthermore, the bending portion includes an inner flexible tube, an outer spring tube sleeved outside the inner flexible tube, and a ball-and-socket joint sleeved outside the outer spring tube. The inner cavity of the inner flexible tube communicates with the first guide wire hole. A gap cavity is provided between the inner flexible tube and the outer spring tube. The distal end of the ball-and-socket joint is connected to the proximal end, and the proximal end is connected to the connecting portion.

[0013] Furthermore, the inner flexible tube is a spring tube.

[0014] Furthermore, a groove is provided on the inner side of the distal end of the ball-and-socket joint, and a buckle adapted to and connected to the groove is provided on the proximal end of the distal end.

[0015] Furthermore, the proximal end of the ball-and-socket joint is provided with a groove, and the distal end of the connecting portion is provided with an annular boss that engages with and connects to the groove.

[0016] Furthermore, the connecting part is provided with an axially penetrating second guide wire hole, a fluid flow hole, and a wire channel. The second guide wire hole communicates with the inner cavity of the inner hose, and the fluid flow hole communicates with the flushing hole.

[0017] Furthermore, the liquid flow hole and the flushing hole are connected through the gap cavity; or, the liquid flow hole and the flushing hole are connected through a liquid flow pipe disposed in the gap cavity.

[0018] Furthermore, the wires of the viewing lens and the lighting lamp pass through the gap cavity and enter the wire channel; or, the wires of the viewing lens and the lighting lamp pass through the wire tube disposed in the gap cavity and enter the wire channel.

[0019] Furthermore, a positioning post is provided at the proximal end of the connecting part, and the liquid flow hole penetrates the positioning post.

[0020] This utility model also provides an intestinal obstruction catheter, which includes at least the above-mentioned intestinal obstruction catheter guide head. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a guide head for an intestinal obstruction catheter in this embodiment.

[0022] Figure 2 This is a schematic diagram of the distal end of the tip of a guide head for an intestinal obstruction catheter in this embodiment.

[0023] Figure 3 This is a schematic diagram of the transverse cross-section of the tip of a guide head for an intestinal obstruction catheter in this embodiment.

[0024] Figure 4 This is a schematic diagram of the proximal end of the tip of a guide head for an intestinal obstruction catheter in this embodiment.

[0025] Figure 5 This is a schematic diagram of the curved portion of a guide head for an intestinal obstruction catheter in this embodiment.

[0026] Figure 6 This is a schematic diagram of the connection part of a guide head for an intestinal obstruction catheter in this embodiment.

[0027] Figure 7 This is a schematic diagram of the installation of the main catheter and guide head of an intestinal obstruction catheter in this embodiment.

[0028] Figure 8 This is a schematic diagram of the main catheter of an intestinal obstruction catheter according to this embodiment.

[0029] Figures 1-8 middle: 1. Tip end; 11. First guide wire hole; 12. Flushing hole; 121. Drainage section; 1211. Drainage outlet; 13. Snap fastener; 14. Lens mounting hole; 15. Illumination lamp mounting hole; 2. Bend; 21. Inner flexible tube; 22. Outer spring tube; 221. Gap cavity; 23. Ball-and-socket joint; 231. Slot; 232. Groove; 3. Connecting part; 31. Second guide wire hole; 32. Fluid flow hole; 33. Wire channel; 34. Annular boss; 35. Positioning post; 4. Viewing lens; 5. Lighting; 6. Main tube; 61. Main wire cavity; 62. Main fluid flow channel; 63. Main line channel; 64. Gas cavity. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] In the description of this invention, "proximal end" refers to the end closer to the operator, and "distal end" refers to the end further away from the operator, i.e., closer to the patient.

[0034] like Figure 1 As shown, a guide tip for an intestinal obstruction catheter in this embodiment includes a tip 1, a bend 2, and a connecting portion 3. The distal end of the bend 2 is connected to the proximal end of the tip 1, and the proximal end of the bend 2 is connected to the distal end of the connecting portion 3.

[0035] Preferably, in this embodiment, the structure of the tip portion 1 is as follows: Figure 2-4 As shown, a snap fastener 13 is provided at the proximal end of the tip portion 1. The structure of the bent portion 2 is as follows: Figure 5As shown, the bending portion 2 includes an inner flexible tube 21, an outer spring tube 22 sleeved outside the inner flexible tube 21, and a ball-and-socket joint 23 sleeved outside the outer spring tube 22. A groove 231 is provided on the inner side of the distal end of the ball-and-socket joint 23. The buckle 13 of the tip portion 1 is adapted to and connected to the groove 231 of the bending portion 2.

[0036] Preferably, in this embodiment, a groove 232 is provided at the proximal end of the ball-and-socket joint 23 of the curved portion 2. The structure of the connecting portion 3 is as follows: Figure 6 As shown, an annular boss 34 is provided at the distal end of the connecting part 3. The groove 232 of the bent part 2 is engaged with the annular boss 34 of the connecting part 3.

[0037] In this embodiment, the tip portion 1 is provided with an axially penetrating first guidewire hole 11 and a flushing hole 12. The first guidewire hole 11 allows the guidewire to pass through the intestinal obstruction catheter and assists in controlling the insertion direction of the intestinal obstruction catheter. The flushing hole 12 allows saline or medication to be injected into the intestine for adjunctive intestinal treatment.

[0038] As a special feature of this embodiment, the structure of the tip is as follows: Figure 2-4 As shown, a viewing lens 4 is provided on the distal end face of the tip end 1, and the tip end 1 is provided with an axially penetrating lens mounting hole 14 for mounting the viewing lens 4.

[0039] The advantage of this setup is that, during the insertion of the intestinal obstruction catheter, the operator can directly observe the physiological structure of the upper digestive tract through the visual lens 4. When the intestinal obstruction catheter reaches the physiological narrowing of the intestine, it can be directly viewed and determined whether the obstruction has been reached, eliminating the need for a transnasal endoscope and X-ray machine. This reduces the requirements for site facilities, greatly expands the application scenarios, and improves application flexibility. After successful placement of the intestinal obstruction catheter, the obstruction and lesion status can also be directly observed, allowing for minimally invasive biopsies of abnormal tissues under visual guidance, thus improving the effectiveness of adjuvant therapy.

[0040] Furthermore, a drainage section 121 is provided on the distal end face of the tip 1 at the outlet of the flushing hole 12, and the drainage outlet 1211 of the drainage section 121 faces the viewing lens 4.

[0041] The advantage of this design is that a drainage section 121 is provided at the outlet of the flushing hole 12, and the drainage outlet 1211 of the drainage section 121 is oriented towards the viewing lens 4. The purpose is to change the direction of water flow so that clean water flows directly to the viewing lens 4 first, and then flows into the intestine. This can effectively and promptly clean the viewing lens 4 that is contaminated by intestinal mucus or foreign objects, keeping the viewing lens 4 clean and preventing the viewing lens 4 from being contaminated by intestinal mucus or foreign objects, thus ensuring the accuracy of observation and reducing the difficulty of tube placement and treatment.

[0042] Preferably, in this embodiment, an illumination lamp 5 is provided on the distal end face of the tip portion 1 around the viewing lens 4, and another illumination lamp 5 is provided around the drainage portion 121. The tip portion 1 is provided with two axially penetrating illumination lamp mounting holes 15 for mounting the illumination lamps 5 respectively.

[0043] The advantage of this setup is that the illumination lamp 5 can provide sufficient light, increase the field of view for observing the intestines, and also avoid the problem of being unable to observe due to the failure of the built-in lamp of the visual lens 4, thereby improving the safety of the catheter placement procedure and treatment.

[0044] like Figure 5 As shown, preferably, in this embodiment, a gap cavity 221 is provided between the inner flexible tube 21 of the bent portion 2 and the outer spring tube 22. Further, the inner flexible tube 21 is a spring tube with a diameter smaller than that of the outer spring tube 22. It should be noted that in this embodiment, the inner flexible tube 21 is a spring tube, which is merely a preferred embodiment. Those skilled in the art should understand that the inner flexible tube 21 can also be other high-performance plastic flexible tubes, etc.

[0045] like Figure 6 As shown, in a preferred embodiment, the connecting portion 3 is provided with an axially penetrating second guide wire hole 31, a fluid flow hole 32, and a wire channel 33. A positioning post 35 is provided at the proximal end of the connecting portion 3, and the fluid flow hole 32 penetrates the positioning post 35. Further, the wire channel 33 is a wire groove provided on the outer wall of the connecting portion 3. It should be noted that in this embodiment, the wire channel 33 is provided as a wire groove, which is merely a preferred embodiment. Those skilled in the art should understand that the wire channel 33 can also be an axially penetrating wire hole in the connecting portion 3.

[0046] like Figure 7 As shown, an intestinal obstruction catheter of this embodiment includes a guide head and a main tube 6 as described above. Preferably, in this embodiment, the main tube 6 has the following structure: Figure 7-8 As shown, the main tube 6 is provided with an axially penetrating main wire cavity 61, a main liquid flow channel 62, a main wire channel 63, and two air cavities 64 located on both sides of the main liquid flow channel 62.

[0047] Preferably, in this embodiment, one side of the inner flexible tube 21 extends from the distal end of the bend 2 and communicates with the first guide wire hole 11, while the other side extends from the proximal end of the bend 2, passes through the second guide wire hole 31 of the connecting part 3, and is fitted onto the main guide wire 61 of the main guide tube 6.

[0048] Preferably, in this embodiment, the positioning post 35 is connected to the distal end of the main fluid flow channel 62, and the main fluid flow channel 62 is connected to the fluid flow hole 32. The fluid flow hole 32 is connected to the flushing hole 12 through the gap cavity 221.

[0049] Preferably, in this embodiment, the wires of the viewing lens 4 and the lighting lamp 5 pass through the gap cavity 221 and enter the wire channel 33. The wire channel 33 is connected to the main wire channel 63 of the main guide tube 6.

[0050] It should be noted that in this embodiment, the method of directly connecting the wire channel 33, the viewing lens 4, the lighting lamp 5, the liquid flow hole 32 and the flushing hole 12 through the gap cavity 221 is only a preferred embodiment. Those skilled in the art should understand that the liquid flow hole 32 and the flushing hole 12 can also be connected by a liquid flow pipe provided in the gap cavity 221. In addition, a wire pipe can also be provided in the gap cavity 221 to connect the wires of the viewing lens 4 and the lighting lamp 5 into the wire channel 33.

[0051] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A guide head for an intestinal obstruction catheter, characterized in that, It includes at least a tip (1), a bend (2) and a connecting part (3), the distal end of the bend (2) is connected to the tip (1), the proximal end of the bend (2) is connected to the connecting part (3), the tip (1) is provided with an axially penetrating first guide wire hole (11) and a flushing hole (12), and a viewing lens (4) is provided on the distal end face of the tip (1).

2. The guide head for intestinal obstruction catheters according to claim 1, characterized in that, A drainage section (121) is provided on the distal end face of the tip (1) at the outlet of the flushing hole (12), and the drainage outlet (1211) of the drainage section (121) faces the viewing lens (4).

3. The guide head for intestinal obstruction catheters according to claim 1, characterized in that, At least one lighting lamp (5) is provided on the far end face of the tip (1) around the viewing lens (4).

4. The guide head for the intestinal obstruction catheter according to claim 3, characterized in that, The bending portion (2) includes an inner flexible tube (21), an outer spring tube (22) sleeved outside the inner flexible tube (21), and a ball-and-socket joint (23) sleeved outside the outer spring tube (22). The inner cavity of the inner flexible tube (21) is connected to the first guide wire hole (11). A gap cavity (221) is provided between the inner flexible tube (21) and the outer spring tube (22). The distal end of the ball-and-socket joint (23) is connected to the tip end (1), and the proximal end is connected to the connecting portion (3).

5. The guide head for the intestinal obstruction catheter according to claim 4, characterized in that, The inner flexible tube (21) is a spring tube.

6. The intestinal obstruction catheter guide head according to claim 4, characterized in that, The ball-and-socket joint (23) has a groove (231) on the inner side of its distal end, and the proximal end of the tip end (1) has a buckle (13) that is adapted to and connected to the groove (231).

7. The guide head for the intestinal obstruction catheter according to claim 4, characterized in that, The ball-and-socket joint (23) has a groove (232) at its proximal end, and the connecting part (3) has an annular boss (34) at its distal end that fits into the groove (232).

8. The guide head for intestinal obstruction catheters according to claim 4, characterized in that, The connecting part (3) is provided with an axially penetrating second guide wire hole (31), a liquid flow hole (32) and a wire channel (33). The second guide wire hole (31) is connected to the inner cavity of the inner hose (21), and the liquid flow hole (32) is connected to the flushing hole (12).

9. The guide head for intestinal obstruction catheters according to claim 8, characterized in that, The liquid flow hole (32) and the flushing hole (12) are connected through the gap cavity (221); or, the liquid flow hole (32) and the flushing hole (12) are connected through a liquid flow pipe disposed in the gap cavity (221).

10. The guide head for the intestinal obstruction catheter according to claim 8, characterized in that, The wires of the viewing lens (4) and the lighting lamp (5) pass through the gap cavity (221) and enter the wire channel (33); or, the wires of the viewing lens (4) and the lighting lamp (5) pass through the wire tube provided in the gap cavity (221) and enter the wire channel (33).

11. The guide head for intestinal obstruction catheters according to claim 8, characterized in that, A positioning post (35) is provided at the proximal end of the connecting part (3), and the liquid flow hole (32) passes through the positioning post (35).

12. A catheter for intestinal obstruction, characterized in that, It includes at least the intestinal obstruction catheter guide head as described in any one of claims 1-11.

Images