Auxiliary guide device and guide wire for stomach tube replacement

Abstract

The invention relates to the technical field of stomach tube intubation, discloses an auxiliary guide device for stomach tube replacement and a guide wire, and solves the problems that the operation difficulty is high, the same medical risk exists in tube replacement every time and the requirement for matching of a patient is high when a stomach tube is inserted into a patient. Then a tube feeding mechanism is controlled, so that a limiting groove covers the outer side of a supporting ball, a clamping wheel is matched with a matching mechanism to clamp the tube wall, then the clamping wheel is controlled to rotate, the stomach tube is pushed to slide relative to the matching mechanism, the stomach tube in the body of the patient is pulled out, meanwhile, a guide wire is reserved in the body of the patient, and then one end of a new stomach tube is arranged at the outer end of the guide wire in a sleeving mode; the matching mechanism enters the tube, then the clamping wheel is rotated reversely, and a new stomach tube is fed into the stomach along the guide wire reserved in the body.

Description

Technical Field

[0001] The present invention relates to the technical field of gastric tube intubation, in particular to a gastric tube replacement auxiliary guide device and a guide wire. Background Art

[0002] A gastric tube is a medical device primarily used to deliver food, water, or medication directly into a patient's stomach. The tube consists of a flexible body and a funnel tip. Insertion requires the use of a guide wire, which is difficult and requires specialized skills to prevent the tube from being inserted into any location other than the stomach. Current methods for detecting gastric tube insertion involve aspirating the stomach contents and measuring the pH with pH test paper to determine tube placement. If the aspirated contents are not within the stomach, immediate imaging is performed to confirm the tube's placement and prevent potential accidents.

[0003] For patients with gastric tubes, the tubes need to be replaced every 42 days or so, and some may have a shorter replacement cycle. Since tube insertion itself carries certain medical risks, each tube replacement carries the same medical risks. Therefore, it is inconvenient to implement extended nursing services (home visits) for patients with gastric tubes. Regarding the procedure for intubating patients, the patient is first asked to cooperate and assume a suitable body posture, then the tube is inserted from the nasal cavity into the throat, and while the patient is asked to swallow, the tube continues to be inserted so that it can smoothly enter the esophagus and reach the stomach; the above operation must be performed every time the tube is changed, and the operation difficulty will increase when dealing with patients with poor cooperation ability. Summary of the Invention

[0004] The purpose of the present invention is to provide an auxiliary guiding device and a guiding wire for gastric tube replacement, which solves the problems of high difficulty in changing tubes for patients with gastric tubes, the same medical risks in each tube change, and high requirements for patient cooperation.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a gastric tube replacement auxiliary guide device, comprising a matching mechanism inserted into the gastric tube, guide wires connected to both sides of the matching mechanism, a tube delivery mechanism for clamping and pushing the outer surface of the gastric tube is provided on the outside of the gastric tube, the tube delivery mechanism comprises a pair of upper and lower symmetrical limiting covers, a pair of limiting covers having limiting grooves on their surfaces for adapting the matching mechanism to the covers, a rotating clamping wheel is provided on the outside of the limiting cover, the surface of the clamping wheel protrudes to the inner side of the limiting groove and adapts to the outer surface of the matching mechanism, and cooperates with the matching mechanism to clamp the gastric tube, and the rotating clamping wheel frictionally pushes the gastric tube to move relative to the matching mechanism.

[0006] As a further description of the above technical solution: the matching mechanism includes a supporting ball, the supporting ball is elliptical, and the limiting groove and the clamping wheel are adapted to the surface of the supporting ball with a gentle curvature.

[0007] As a further description of the above technical solution: both sides of the support ball tip are set as movable extrusion blocks, which are elastically contracted into the support ball under extrusion, and a push spring B is provided between the two extrusion blocks.

[0008] As a further description of the above technical solution: the side surface of the support ball is fixedly connected to a docking seat, and one end of the guide wire is detachably connected to the docking seat.

[0009] As a further description of the above technical solution: It is characterized in that: the pipe feeding mechanism includes a mounting cover, and an assembly block for rotating the assembly clamping wheel and fixing the limit cover is provided in the mounting cover, the assembly block on the lower side is fixedly installed, and the assembly block on the upper side is movably installed, and the upper surface of the movable assembly block is provided with a push spring A for pushing it, and a sliding groove for the assembly block to move is provided in the mounting cover.

[0010] As a further description of the above technical solution: the rotating shaft of the clamping wheel passes through the other side of the assembly block and is fixedly connected to the driving gear A. The limit cover is fixedly assembled on the side surface of the assembly block. When the two limit covers are close to the extreme position, the driving gear A on one side of the corresponding clamping wheel is just engaged, and the two clamping wheels rotate in opposite directions. A reduction motor is fixedly installed on the lower side of the mounting cover, and a gear B is provided at the output end of the reduction motor. The gear B remains engaged with the fixed driving gear A.

[0011] A guide wire, according to the gastric tube replacement auxiliary guide device described in any one of the present applications, comprises a first guide wire and a second guide wire, the first guide wire is used to be inserted into the body, and the second guide wire is arranged outside the body, the first guide wire comprises a first steel wire, a first connecting seat and a first isolation sleeve, the first isolation sleeve fixed sleeve is arranged on the outer surface of the first steel wire, the first connecting seat is fixed to one end of the first steel wire, the second guide wire comprises a second steel wire, a second connecting seat, and a second isolation sleeve, the second guide wire has the same structure as the first guide wire, and the second steel wire, the second connecting seat, and the second isolation sleeve correspond to the first steel wire, the first connecting seat, and the first isolation sleeve respectively.

[0012] As a further description of the above technical solution: the first connecting seat includes a hollow screw and a connecting piece connected by a spherical hinge, a screw cap is provided on the outer surface of the hollow screw, the hollow screw and the connecting piece are internally connected along the axial direction, a threaded hole is provided in the docking seat for threaded connection with the hollow screw, and a connecting hole connected to the hollow screw, the connecting hole is connected to the inner side of the support ball, and a plurality of liquid outlet holes A are opened on the surface of the support ball.

[0013] As a further description of the above technical solution: one end of the second steel wire is connected to a connector.

[0014] As a further description of the above technical solution: the surface of the first isolation sleeve is marked with scale lines, a leakage hole is opened, and the end thereof is provided with a head.

[0015] To sum up, due to the adoption of the above technical scheme, the beneficial effects of the present invention are: a guide wire with a matching mechanism is inserted into the gastric tube, and then the tube delivery mechanism is controlled so that the limiting groove is covered on the outside of the support ball, and the clamping wheel cooperates with the matching mechanism to clamp the tube wall, and then the clamping wheel is controlled to rotate to push the gastric tube to slide relative to the matching mechanism, and the gastric tube in the patient's body is pulled out, while the guide wire is retained in the patient's body, and then one end of the new gastric tube is inserted into the other end of the guide wire outside the body to make the matching mechanism enter the tube, and then the clamping wheel is rotated in the opposite direction to deliver the new gastric tube into the stomach along the guide wire reserved in the body. This process has low operating difficulty, low operating risk, accurate intubation, and low requirements for patient cooperation, and does not require the patient to cooperate with swallowing movements; the patient only needs to cooperate with the intubation in the hospital for the first time, and subsequent intubations can be performed on-site by medical staff carrying equipment, which greatly improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall planar structure of the present invention; Figure 3 It is a structural schematic diagram of the pipe delivery mechanism of the present invention; Figure 4 It is a schematic diagram of the cross-sectional side structure of the pipe delivery mechanism of the present invention; Figure 5 This is a schematic diagram of the cross-sectional back structure of the pipe delivery mechanism of the present invention; Figure 6 It is a schematic diagram of the matching mechanism, the first guide wire and the second guide wire structure of the present invention; Figure 7 It is a schematic diagram of the matching mechanism structure of the present invention; Figure 8 Schematic diagram of the first guide wire structure of the present invention; Figure 9 Schematic diagram of the second guide wire structure of the present invention; Figure 10 This is a structural schematic diagram of the first connecting socket of the present invention.

[0017] In the figure: 10. pipe feeding mechanism; 11. limiting cover; 111. limiting groove; 12. clamping wheel; 121. driving gear A; 13. assembly block; 14. push spring A; 15. guide block; 151. grip rod; 16. reduction motor; 161. gear B; 17. installation cover; 20. matching mechanism; 21. support ball; 211. liquid outlet A; 22. docking seat; 221. threaded hole; 222. connecting hole; 23. extrusion block; 24. push spring B; 30. first guide wire; 31. first steel wire; 32. first connecting seat; 321. screw cap; 322. hollow screw; 323. connecting piece; 33. first isolation sleeve; 331. head; 332. leakage hole; 333. scale line; 40. second guide wire; 41. second steel wire; 42. second connecting seat; 43. second isolation sleeve; 44. connecting head. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0020] Combine Figures 1-10 The gastric tube replacement auxiliary guide device includes a matching mechanism 20 that penetrates into the gastric tube. The outer surface of the matching mechanism 20 is smooth and has no edges and corners. Guide wires are connected to both sides of the matching mechanism 20. A tube delivery mechanism 10 is provided on the outside of the gastric tube for clamping and pushing its outer surface. The tube delivery mechanism 10 includes a pair of upper and lower symmetrical limiting covers 11. A pair of limiting covers 11 are provided on the surface of the limiting covers 11 to adapt the matching mechanism 20 to the covers. A rotating clamping wheel 12 is provided on the outside of the limiting cover 11. The surface of the clamping wheel 12 protrudes to the inner side of the limiting groove 111 and adapts to the outer surface of the matching mechanism 20. The matching mechanism 20 clamps the gastric tube, and the rotating clamping wheel 12 frictionally pushes the gastric tube to move relative to the matching mechanism 20.

[0021] Specifically, for patients who have already had a gastric tube inserted and need to change the tube, first insert the guide wire with the matching mechanism 20 into the gastric tube until the matching mechanism 20 enters the interior of the tube body, and then control the tube delivery mechanism 10 to prompt a pair of limiting covers 11 on the outside of the gastric tube to cover the support ball 21 on the inner side of the limiting groove 111. The matching mechanism 20 only moves on the inner side of the limiting groove 111. Under normal circumstances, the inner wall of the limiting groove 111 has no pressure on the gastric tube wall on the surface of the support ball 21, and the clamping wheel 12 clamps the tube wall through the matching mechanism 20, and then controls the clamping wheel 12 to rotate. The rotating pair of clamping wheels 12 push the outer surface of the gastric tube, causing the gastric tube to slide relative to the matching mechanism 20, so that the gastric tube in the patient's body is pulled out, and the guide wire is retained in the patient's body. Then, one end of the new gastric tube is inserted into the other end of the guide wire outside the body, so that the matching mechanism 20 enters the tube, and then the above process is repeated. The clamping wheels 12 are rotated in the opposite direction, and the new gastric tube can be sent into the stomach along the guide wire retained in the body. This process has low difficulty and low risk of operation, accurate intubation, and requires little cooperation from the patient, and does not require the patient to cooperate in swallowing. Through the above operation method, the patient only needs to cooperate with the intubation in the hospital for the first time, and subsequent intubations can be performed at home by medical staff carrying equipment, which greatly improves the convenience of operation.

[0022] Combine Figure 6-Figure 7 The matching mechanism 20 includes a support ball 21, which is elliptical in shape. The limiting groove 111 and the clamping wheel 12 are adapted to the surface of the support ball 21 with a gentle arc. The support ball 21 is designed to be elliptical so that the clamping wheel 12 that adapts to its surface can form a larger area of clamping with it, so as to provide sufficient friction to push the gastric tube to move relative to the support ball 21.

[0023] The two sides of the tip of the support ball 21 are set as movable extrusion blocks 23. The extrusion blocks 23 are elastically contracted into the support ball 21 under extrusion. A push spring B24 is provided between the two extrusion blocks 23. Through the setting of the extrusion blocks 23, the volume of the support ball 21 can be appropriately reduced, which provides convenience for: sending the support ball 21 into the gastric tube, and pulling out the support ball 21 from the funnel head end of the gastric tube. When the support ball 21 is in the tube, the extrusion block 23 is pushed out by the push spring B24, so that the inner wall of the tube is fully fitted with the surface of the support ball 21, further enabling the clamping wheel 12 and the support ball 21 to form a better clamping of the gastric tube wall.

[0024] The side surface of the support ball 21 is fixedly connected to a docking seat 22, and one end of the guide wire can be detachably connected to the docking seat 22. To cope with different patients, the guide wire connected to one side of the support ball 21 can be replaced with a suitable length; and in the early stage of tube replacement, it is only necessary to connect the guide wire used to be inserted into the patient's body, and the other end does not need to be connected, which is convenient for withdrawing the tube.

[0025] Combine Figure 3-Figure 5The tube feeding mechanism 10 includes a mounting cover 17, in which an assembly block 13 for rotating the assembly clamping wheel 12 and fixing the limit cover 11 is provided. The lower assembly block 13 is fixedly installed, and the upper assembly block 13 is movably installed. The upper surface of the movable assembly block 13 is provided with a push spring A14 for pushing it. A slide groove for the assembly block 13 to move is opened in the mounting cover 17; The rotating shaft of the clamping wheel 12 passes through the other side of the assembly block 13 and is fixedly connected to the driving gear A121. The limiting cover 11 is fixedly assembled on the side surface of the assembly block 13. When the two limiting covers 11 are close to the extreme position, the driving gear A121 on one side of the corresponding clamping wheel 12 is just engaged, and the two clamping wheels 12 rotate towards each other. The reduction motor 16 is fixedly installed on the lower side of the mounting cover 17. The output end of the reduction motor 16 is provided with a gear B161, which is kept in mesh with the fixed driving gear A121. A guide block 15 is provided on the side of the movable assembly block 13 and slides on the side of the mounting cover 17. A grip rod 151 is fixedly connected to one side of the guide block 15. Another grip rod 151 is provided below the grip rod 151, and the grip rod 151 is fixedly connected to the mounting cover 17. Furthermore, by pulling the slidable assembly block 13 upward, the two limiting covers 11 are separated, which makes it easy to remove the matching mechanism 20 in the gastric tube from the limiting groove 111 or put it into the limiting groove 111. When the two limiting covers 11 are combined to the extreme position, the two limiting grooves 111 just cover the matching mechanism 20 and the gastric tube on the inside. The gastric tube on the surface of the limiting groove 111 and the surface of the matching mechanism 20 is under normal conditions. The clamping wheel 12 cooperates with the matching mechanism 20 to press the outer surface of the gastric tube. When the reduction motor 16 is controlled to drive the driving gear A121 connected to it to rotate, the two clamping wheels 12 will rotate towards each other, further pushing the gastric tube to move between the limiting covers 11, so as to achieve the effect of removing the tube or inserting the tube along the guide wire on one side. Regarding the arrangement of the two gripping rods 151 , when threading the pipe, the two gripping rods 151 can be gripped tightly, so that the relative positions of the two limiting covers 11 can be fixed.

[0026] Combine Figures 6-10 , the guide wire includes a first guide wire 30 and a second guide wire 40, the first guide wire 30 is used to be inserted into the body, and the second guide wire 40 is arranged outside the body, the first guide wire 30 includes a first steel wire 31, a first connecting seat 32 and a first isolation sleeve 33, the first isolation sleeve 33 is fixedly sleeved on the outer surface of the first steel wire 31, the first connecting seat 32 is fixed to one end of the first steel wire 31, the second guide wire 40 includes a second steel wire 41, a second connecting seat 42, and a second isolation sleeve 43, the second guide wire 40 has the same structure as the first guide wire 30, the second steel wire 41, the second connecting seat 42, and the second isolation sleeve 43 correspond to the first steel wire 31, the first connecting seat 32, and the first isolation sleeve 33 respectively; Since the first steel wire 31 cannot be retained in the human body and cannot directly contact the inner wall of the intestine, a first isolation sleeve 33 is required for isolation. The material of the first isolation sleeve 33 is preferably latex.

[0027] Combine Figure 7 、 Figure 10 The first connecting seat 32 includes a hollow screw 322 and a connecting piece 323 connected by a spherical hinge. A screw cap 321 is provided on the outer surface of the hollow screw 322. The hollow screw 322 is internally connected to the connecting piece 323 along the axial direction. A threaded hole 221 is provided in the docking seat 22, which is threadedly connected to the hollow screw 322, and a connecting hole 222 connected to the hollow screw 322. The connecting hole 222 is connected to the inner side of the support ball 21. A plurality of liquid outlet holes A211 are provided on the surface of the support ball 21. The first steel wire 31 is woven into a hollow.

[0028] It should be noted that the second steel wire 41, the second connecting seat 42, and the second isolation sleeve 43 correspond to the first steel wire 31, the first connecting seat 32, and the first isolation sleeve 33 respectively, so the structures of the second steel wire 41, the second connecting seat 42, and the second isolation sleeve 43 are not repeated.

[0029] Combine Figure 9 One end of the second steel wire 41 is connected to a connector 44, which can be connected to a syringe. The hydrochloric acid solution is injected into the inner side of the second steel wire 41 through the syringe. The hydrochloric acid solution is injected into the inner side of the support ball 21 through the second isolation sleeve 43, the second connecting seat 42 and the corresponding docking seat 22. Then the hydrochloric acid solution leaks out from the liquid outlet A211 and covers the outer surface of the support ball 21, so that the surface of the support ball 21 and the inner wall of the gastric tube can slide more easily.

[0030] Combine Figure 8 The surface of the first isolation sleeve 33 is marked with scale lines 333, and a leakage hole 332 is opened. The end of the first isolation sleeve 33 is set as a head 331. The hydrochloric acid solution injected into the support ball 21 can continue to pass through the first connecting seat 32 to the inner side of the first isolation sleeve 33 and leak out through the leakage hole 332, thereby increasing the lubricity between the first isolation sleeve 33 and the inner wall of the gastric tube, which is more conducive to tube insertion. The setting of the scale line 333 is convenient for comparison with the original gastric tube, so as to control the insertion distance of the newly inserted gastric tube.

[0031] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Gastric tube replacement auxiliary guide device, characterized by: The invention comprises a matching mechanism (20) which is inserted into a gastric tube, wherein guide wires are connected to both sides of the matching mechanism (20), and a tube delivery mechanism (10) which clamps and pushes the outer surface of the gastric tube is provided on the outside of the gastric tube, and the tube delivery mechanism (10) comprises a pair of upper and lower symmetrical limiting covers (11), and a pair of limiting covers (11) are provided with limiting grooves (111) on the surfaces thereof for fitting the matching mechanism (20) thereto, and a rotating clamping wheel (12) is provided on the outer side of the limiting cover (11), and the surface of the clamping wheel (12) protrudes to the inner side of the limiting groove (111) and fits the outer surface of the matching mechanism (20), so as to clamp the gastric tube in cooperation with the matching mechanism (20), and the rotating clamping wheel (12) frictionally pushes the gastric tube to move relative to the matching mechanism (20).

2. The gastric tube replacement auxiliary guide device according to claim 1, characterized in that: The matching mechanism (20) comprises a supporting ball (21), the supporting ball (21) is elliptical, and the limiting groove (111) and the clamping wheel (12) are adapted to the gently curved surface of the supporting ball (21).

3. The gastric tube replacement auxiliary guide device according to claim 2, characterized in that: Both sides of the tip of the support ball (21) are provided with movable extrusion blocks (23). The extrusion blocks (23) are elastically contracted toward the inside of the support ball (21) under extrusion, and a push spring B (24) is provided between the two extrusion blocks (23).

4. The gastric tube replacement auxiliary guide device according to claim 3, characterized in that: The side surface of the support ball (21) is fixedly connected to a docking seat (22), and one end of the guide wire is detachably connected to the docking seat (22).

5. The gastric tube replacement auxiliary guide device according to claim 1, characterized in that: The pipe feeding mechanism (10) includes a mounting cover (17), wherein an assembly block (13) for rotating the assembly clamping wheel (12) and fixing the limit cover (11) is provided in the mounting cover (17), wherein the assembly block (13) on the lower side is fixedly installed, and the assembly block (13) on the upper side is movably installed, and a push spring A (14) is provided on the upper surface of the movable assembly block (13) for pushing it, and a slide groove for the assembly block (13) to move is provided in the mounting cover (17).

6. The gastric tube replacement auxiliary guide device according to claim 5, characterized in that: The rotating shaft of the clamping wheel (12) passes through the other side of the assembly block (13) and is fixedly connected to the driving gear A (121). The limiting cover (11) is fixedly assembled on the side surface of the assembly block (13). When the two limiting covers (11) are close to the extreme position, the driving gear A (121) on one side of the corresponding clamping wheel (12) is just engaged, and the two clamping wheels (12) rotate in opposite directions. A reduction motor (16) is fixedly installed on the lower side of the mounting cover (17). The output end of the reduction motor (16) is provided with a gear B (161), and the gear B (161) is kept in engagement with the fixed driving gear A (121).

7. A guide wire, a gastric tube replacement auxiliary guide device according to any one of claims 1 to 6, characterized in that: The invention comprises a first guide wire (30) and a second guide wire (40), wherein the first guide wire (30) is used for being inserted into the body, and the second guide wire (40) is arranged outside the body, and the first guide wire (30) comprises a first steel wire (31), a first connecting seat (32) and a first isolating sleeve (33), and the first isolating sleeve (33) is fixedly sleeved on the outer surface of the first steel wire (31), and the first connecting seat (32) is fixed to one end of the first steel wire (31), and the second guide wire (40) comprises a second steel wire (41), a second connecting seat (42) and a second isolating sleeve (43), and the second guide wire (40) has the same structure as the first guide wire (30), and the second steel wire (41), the second connecting seat (42) and the second isolating sleeve (43) correspond to the first steel wire (31), the first connecting seat (32) and the first isolating sleeve (33) respectively.

8. The guide wire according to claim 7, characterized in that: The first connecting seat (32) includes a hollow screw (322) and a connecting piece (323) connected by a spherical hinge. A screw cap (321) is provided on the outer surface of the hollow screw (322). The hollow screw (322) and the connecting piece (323) are internally connected along the axial direction. A threaded hole (221) threadedly connected to the hollow screw (322) and a connecting hole (222) connected to the hollow screw (322) are provided in the docking seat (22). The connecting hole (222) is connected to the inner side of the support ball (21). A plurality of liquid outlet holes A (211) are provided on the surface of the support ball (21).

9. The guide wire according to claim 8, characterized in that: One end of the second steel wire (41) is connected to a connector (44).

10. The guide wire according to claim 9, characterized in that: The surface of the first isolation sleeve (33) is marked with scale lines (333), is provided with a leak hole (332), and has a sealing head (331) at its end.

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