An intestinal fluid reinfusion device with anti-infection function

Abstract

The present invention discloses an intestinal fluid reinfusion device with an infection prevention function, which relates to the field of intestinal fluid reinfusion devices and includes an infusion device, a first catheter, and a reinfusion head. The bottom of the infusion device is connected to the first catheter, and the bottom of the first catheter is connected to the reinfusion head. The device also includes an isolation cover, a first strap, and a second strap. The reinfusion head is slidably connected to the isolation cover, the side of the isolation cover away from the reinfusion head is connected to the second strap, and the side of the isolation cover close to the second strap is connected to the first strap. The present invention can cover the patient's stoma position by providing the first strap and the second strap. The isolation cover can fit tightly to the stoma position, which can prevent the isolation cover from easily falling off. Under the isolation effect of the isolation cover, bacteria can be prevented from contaminating the needle, making the infection prevention function better.

Description

Technical Field

[0001] The present invention relates to the field of intestinal fluid reinfusion devices, and in particular to an intestinal fluid reinfusion device with an infection prevention function. Background Art

[0002] Intestinal fistula refers to an abnormal channel between the gastrointestinal tract and other hollow organs, or between the intestine and the abdominal cavity or the outside of the abdominal wall, which can easily cause a series of diseases such as infection, loss of nutrients and digestive fluids. In order to avoid the above problems, an intestinal fluid reinfusion device is usually used to reinfuse intestinal fluid into the patient's intestines.

[0003] Patent publication number CN218900336U discloses a device for reintroducing intestinal fluid through a stoma, including a collecting device, which is connected to the stoma bag through an infusion tube. A stoma base is detachably installed at the bag opening of the stoma bag, and a reintroduction tube is connected to the end of the stoma base away from the stoma bag; the reintroduction tube includes a tube body, a liquid outlet and a cutting area, the upper end of the tube body is provided with a cutting area, the lower end of the tube body is a closed structure, and a plurality of liquid outlets are provided on the side wall of the lower end.

[0004] When using the above patent to return intestinal fluid to the patient's intestine, the medical staff removes the original ostomy bag on the patient, opens the stoma on the patient, inserts the return tube into the patient's intestine, and then sticks the stoma base plate to the patient's stoma position. The medical staff then opens the cover and pours the intestinal fluid into the receiving area. The intestinal fluid will be returned to the patient's intestine through the infusion tube. In the process of returning the intestinal fluid through the return tube, the intestinal fluid may overflow from the stoma. Then, when the intestinal fluid contacts the stoma base plate, it is easy to wet the stoma base plate, and the stoma base plate will lose its stickiness due to the liquid, so the stoma base plate is easy to fall off, which causes the return tube to contact with the outside air. The air carries bacteria, which can easily infect the stoma. Now, an intestinal fluid return device with anti-infection function is being developed. Summary of the Invention

[0005] The present invention provides an intestinal fluid reinfusion device with an infection prevention function, which is used to solve the problem of bacterial infection of the stoma due to easy detachment of the stoma bottom plate in the existing intestinal fluid reinfusion device through the stoma.

[0006] The technical solution is as follows: An intestinal fluid reinfusion device with an anti-infection function includes an infusion pump, a first catheter, a reinfusion head, a needle and a threaded circular plate. The bottom of the infusion pump is connected to the first catheter, the bottom of the first catheter is connected to the reinfusion head, the reinfusion head is threadedly connected to the threaded circular plate on the side away from the first catheter, and the threaded circular plate is connected to the needle on the side away from the reinfusion head. It also includes an isolation cover, a first strap and a second strap. The reinfusion head is slidably connected to the isolation cover, the isolation cover is connected to the second strap on the side away from the reinfusion head, and the isolation cover is connected to the first strap on the side close to the second strap.

[0007] Preferably, a disinfection mechanism is further included, which is used to automatically disinfect the needle. The disinfection mechanism is arranged on the isolation cover, and the disinfection mechanism includes a first guide rod, a wedge-shaped piece and a wiping cotton block. The isolation cover is slidingly connected to the first guide rod symmetrically arranged, and the first guide rod is connected to the wedge-shaped piece. The wedge piece is provided with symmetrically arranged wedge surfaces, and the wedge surfaces are squeezed and fitted with the threaded circular plate. The wedge piece is connected to the wiping cotton block on the side close to the wedge piece, and the wiping cotton block is located between the wedge pieces. The first guide rod has a straight hole.

[0008] Preferably, an opening mechanism is further included, which is used to automatically open the opening of the isolation cover. The opening mechanism is arranged on the side of the isolation cover close to the first guide rod. The opening mechanism includes a pushing assembly, an opening plate and a third compression spring. The isolation cover is slidingly connected to the side close to the first guide rod with the symmetrically arranged opening plate. The third compression spring is connected between the opening plate and the isolation cover. The pushing assembly is provided at the rear of the isolation cover, and the pushing assembly is used to push the opening plate open.

[0009] Preferably, the pushing assembly includes a first wedge block, a second guide rod, a second compression spring and a second wedge block, the isolation cover is connected to the second guide rod symmetrically arranged on the side close to the opening plate, the second guide rod is slidably connected to the first wedge block, the first wedge block and the adjacent first guide rod are squeezed together, the second compression spring is connected between the first wedge block and the isolation cover, the first wedge blocks are connected to the second wedge blocks symmetrically arranged via a connecting ring, and the second wedge block and the opening plate are squeezed together.

[0010] Preferably, an adding mechanism is further included, which is used to add alcohol into the first guide rod. The adding mechanism is arranged on the isolation cover, and includes a loader, a second conduit, a piston rod, a fourth compression spring and an inclined block. The isolation cover is connected to the symmetrically arranged loader on the side close to the return head, and the loader has a one-way valve. The loader is connected to the second conduit on the side away from the isolation cover, and the second conduit is connected to the first guide rod. The straight hole is connected to the second conduit. The isolation cover is slidingly connected to the symmetrically arranged piston rod on the side close to the return head, and the piston rod is slidingly connected to the loader. The piston rod is connected to the inclined block on the side close to the return head, and the inclined surface of the inclined block is squeezed into the return head. The fourth compression spring is connected between the inclined block and the isolation cover.

[0011] Preferably, a sealing mechanism is further included, which is used to seal between the isolation cover and the stoma. The sealing mechanism is arranged on the isolation cover, and the sealing mechanism includes an extrusion assembly, a limiting plate, a third catheter and an annular airbag. The isolation cover is connected to the annular airbag on the side close to the first wedge block, and the annular airbag is connected to the symmetrically arranged third catheter. The isolation cover is connected to the symmetrically arranged limiting plate on the side close to the third catheter, and the limiting plate and the third catheter are connected. The isolation cover is provided with the extrusion assembly, and the extrusion assembly is used to squeeze gas into the annular airbag for inflation.

[0012] Preferably, the extrusion assembly includes a compression plate and an inflatable airbag, the limiting plate is connected to the inflatable airbag, the inflatable airbag is connected to the third conduit, the opening plate is connected to the symmetrically arranged compression plate, and the compression plate and the inflatable airbag are extruded and matched.

[0013] Preferably, a limiting mechanism is further included, which is used to limit the return head. The limiting mechanism is arranged on the side of the isolation cover close to the return head. The limiting mechanism includes a fixed rod, a limiting member and a tension spring. A plurality of the fixing rods are connected to the side of the isolation cover close to the return head. The fixing rods are slidably connected to the limiting members, and the limiting members are provided with an inclined surface. The limiting member and the return head are snap-fitted together, and the tension spring is connected between the limiting member and the fixing rod.

[0014] Preferably, a first compression spring is further included, wherein the first compression spring is connected between the wedge-shaped member and the isolation cover.

[0015] Preferably, the wiping cotton piece has adsorption properties.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention can cover the isolation cover at the stoma position of the patient by arranging the first strap and the second strap. The isolation cover can fit tightly to the stoma position, which can prevent the isolation cover from falling off easily. Under the isolation effect of the isolation cover, bacteria can be prevented from contaminating the needle, making the anti-infection function better.

[0018] 2. The present invention inserts the needle between two wiping cotton blocks, so that alcohol is wiped on the needle through the wiping cotton blocks. The needle can be disinfected before and after the needle is inserted into the patient's stoma position, avoiding bacterial infection at the patient's stoma position.

[0019] 3. Before the needle is moved back and inserted into the stoma, the present invention closes the return head by opening the plate, which can isolate the needle from the outside air and prevent bacteria from entering the return head, thereby reducing the risk of infection.

[0020] 4. The present invention moves the return head backward to extrude the inclined block, so that the inclined block drives the piston rod to automatically move outward to add alcohol to the wiping cotton block, without the need for an external alcohol input tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0023] Figure 3 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the disinfection mechanism of the present invention.

[0025] Figure 5 It is a partially cutaway three-dimensional structural diagram of the disinfection mechanism of the present invention.

[0026] Figure 6 This is a schematic diagram of the first three-dimensional structure of the opening mechanism of the present invention.

[0027] Figure 7 This is a schematic diagram of the second three-dimensional structure of the opening mechanism of the present invention.

[0028] Figure 8 This is a partial three-dimensional structural diagram of the opening mechanism of the present invention.

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the adding mechanism of the present invention.

[0030] Figure 10 This is a schematic cross-sectional three-dimensional structural diagram of the adding mechanism of the present invention.

[0031] Figure 11 It is a schematic diagram of the three-dimensional structure of the sealing mechanism of the present invention.

[0032] Figure 12 It is a partial three-dimensional structural diagram of the sealing mechanism of the present invention.

[0033] Figure 13 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0034] Figure 14 It is a partial three-dimensional structural diagram of the limiting mechanism of the present invention.

[0035] Explanation of the accompanying drawings: 1_infusion set, 11_first catheter, 12_return infusion head, 13_needle, 14_threaded circular plate, 2_isolating cover, 21_first strap, 22_second strap, 3_first guide rod, 31_first compression spring, 32_wedge, 33_wiping cotton block, 4_first wedge, 41_second guide rod, 42_second compression spring, 43_opening plate, 44_third compression spring, 45_second wedge, 5_loader, 51_second catheter, 52_piston rod, 53_fourth compression spring, 54_oblique block, 6_compression plate, 61_inflatable airbag, 62_limiting plate, 63_third catheter, 64_annular airbag, 7_fixing rod, 71_limiting member, 72_tension spring. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and examples.

[0037] Example 1:

[0038] An intestinal fluid reinfusion device with anti-infection function, such as Figure 1-Figure 3 As shown, it includes an infusion set 1, a first catheter 11, a return head 12, a needle 13, a threaded circular plate 14, an isolation cover 2, a first strap 21 and a second strap 22. The bottom of the infusion set 1 is connected to the first catheter 11, and the bottom of the first catheter 11 is connected to the return head 12. The rear end of the return head 12 is threadedly connected to the threaded circular plate 14. The middle of the rear of the threaded circular plate 14 is connected to the needle 13. The needle 13 becomes thinner from front to back. The isolation cover 2 is slidably connected to the return head 12. The second strap 22 is connected to the left side of the isolation cover 2, and the first strap 21 is connected to the right side of the isolation cover 2. The isolation cover 2 can be covered at the stoma position by the first strap 21 and the second strap 22, thereby isolating the needle 13 from the outside air, thereby preventing bacteria in the air from infecting the stoma position.

[0039] When using the intestinal fluid reinfusion device with an infection prevention function, the opening at the rear of the isolation cover 2 can be placed over the stoma of the patient first, and then the first strap 21 and the second strap 22 can be passed around the patient's body backwards, and the first strap 21 and the second strap 22 can be tied together. In this way, the opening at the rear of the isolation cover 2 and the stoma of the patient can be closely fitted together. Then, the reinfusion head 12 can be pushed backwards, and the reinfusion head 12 can be pushed backwards to drive the needle 13 to move backwards. The needle 13 is moved backwards and inserted into the stoma of the patient. Since the opening at the rear of the isolation cover 2 and the stoma of the patient are closely fitted together, The needle 13 is closed and can be isolated from bacteria in the outside air, and the isolation cover 2 will not fall off due to the liquid, which can make the anti-infection function better. After the needle 13 is inserted into the stoma position, the infusion set 1 is turned on, and the infusion set 1 can inject the intestinal fluid into the patient's intestine through the first catheter 11, the return head 12 and the needle 13, so that the intestinal fluid will be returned to the patient's intestine. After the return is completed, the infusion set 1 is closed, and the return head 12 is moved forward to pull out the needle 13. After that, the first strap 21 and the second strap 22 are untied to separate the back of the isolation cover 2 from the stoma.

[0040] Example 2:

[0041] On the basis of Example 1, Figure 4-Figure 5 As shown, it also includes a disinfection mechanism for automatically disinfecting the needle 13. The disinfection mechanism is arranged in the isolation cover 2. The disinfection mechanism includes a first guide rod 3, a first compression spring 31, a wedge 32 and a wiping cotton block 33. The left and right sides of the isolation cover 2 are slidably connected to the first guide rod 3. The inside of the first guide rod 3 is connected to the wedge 32. The front and rear sides of the wedge 32 are provided with wedge surfaces. The wedge surface of the wedge 32 is squeezed and fitted with the threaded circular plate 14. The outside of the wedge 32 and the inside of the isolation cover 2 are connected to the first compression spring 31. The first compression spring 31 is wound around On the first guide rod 3, the inner ends of the wedge-shaped pieces 32 are connected to wiping cotton pieces 33, and the wiping cotton pieces 33 are located between the wedge-shaped pieces 32. After the two wiping cotton pieces 33 overlap with each other, there is a circular hole in the middle between the two wiping cotton pieces 33, and the needle 13 can pass through the circular hole. The needle 13 is automatically wiped and disinfected by the wiping cotton pieces 33. The wiping cotton pieces 33 have adsorption properties and can adsorb alcohol through the wiping cotton pieces 33 to prevent alcohol from dripping into the wiping cotton pieces 33. A straight hole is opened inside the first guide rod 3, and alcohol is injected into the straight hole, and the alcohol is soaked into the wiping cotton pieces 33 through the straight hole.

[0042] In order to further avoid infection at the stoma site of the patient, a disinfection mechanism is provided to disinfect the needle 13. First, the outer end of the first guide rod 3 can be connected to the external alcohol inlet tube, and alcohol is injected into the slotted hole inside the first guide rod 3 through the external alcohol inlet tube, so that the alcohol is immersed in the wiping cotton block 33. When the needle 13 moves backward, the needle 13 will penetrate into the circular hole between the wiping cotton blocks 33. Since the front part of the needle 13 is thicker than the back part, the more the needle 13 moves backward, the two wiping cotton blocks 33 will be slowly pushed outward, and the wiping cotton blocks 33 can It is enough to apply alcohol to the needle 13, so that the needle 13 can be automatically disinfected. When the two wiping cotton blocks 33 are slowly pushed outward, the first guide rod 3 will also be driven to move outward. The first compression spring 31 is compressed, and the first guide rod 3 will drive the wedge 32 to move outward. When the threaded circular plate 14 contacts the front wedge surface of the wedge 32, the two wedges 32 will be driven to move outward. The outward movement of the wedge 32 will drive the two first guide rods 3 to continue to move outward. When the threaded circular plate 14 moves backward and separates from the front wedge surface of the wedge 32 After that, under the action of the first compression spring 31, the first guide rod 3, the wedge-shaped member 32 and the wiping cotton block 33 will move backward and inward, and the wiping cotton block 33 will be attached to the outer wall of the return head 12. In this way, the two wiping cotton blocks 33 can be squeezed outward by the cooperation of the threaded circular plate 14 and the wedge-shaped member 32, so as to prevent the wiping cotton blocks 33 from being blocked at the rear of the return head 12, causing the return head 12 to be unable to move further backward. After the intestinal fluid return is completed, the return head 12 is manually moved forward, and the return head 12 drives the threaded circular plate 14 and the needle 13 to move forward. When the threaded circular plate 14 and the needle 13 are screwed together, the return head 12 is pressed against the outer wall of the return head 12. When the threaded circular plate 14 contacts the rear wedge-shaped surface of the wedge-shaped piece 32, it will push the two wedge-shaped pieces 32 outward again, thereby driving the two wiping cotton blocks 33 to move outward, so that the two wiping cotton blocks 33 are pushed outward again. After that, when the threaded circular plate 14 and the rear wedge-shaped surface of the wedge-shaped piece 32 are separated, under the action of the first compression spring 31, the wiping cotton blocks 33 are driven to move inward and reset. Through the above operation, it can be seen that the needle 13 can be disinfected before and after being inserted into the patient's stoma position, thereby preventing bacterial infection.

[0043] like Figure 6-Figure 8 As shown, it also includes an opening mechanism for automatically opening the opening at the rear of the isolation cover 2. The opening mechanism is arranged at the rear of the isolation cover 2. The opening mechanism includes a pushing component, an opening plate 43 and a third compression spring 44. The upper and lower sides of the rear of the isolation cover 2 are slidably connected with the opening plates 43. When the two opening plates 43 overlap with each other, the opening at the rear of the isolation cover 2 can be closed. A third compression spring 44 is connected between the outer side of the opening plate 43 and the isolation cover 2. The rear of the isolation cover 2 is provided with a pushing component for pushing the opening plate 43 outward to open it.

[0044] like Figure 6-Figure 7 As shown, the pushing assembly includes a first wedge block 4, a second guide rod 41, a second compression spring 42 and a second wedge block 45. The left and right sides of the rear portion of the isolation cover 2 are connected to the second guide rod 41, and the first wedge block 4 is slidably connected to the second guide rod 41. The first wedge block 4 and the outer end of the adjacent first guide rod 3 are squeezed together, and the second compression spring 42 wound on the second guide rod 41 is connected between the rear portion of the first wedge block 4 and the isolation cover 2. A connecting ring is connected between the first wedge blocks 4, and the connecting ring is sleeved on the isolation cover 2. Second wedge blocks 45 are welded on the upper and lower sides of the connecting ring. The second wedge block 45 and the opening plate 43 are squeezed together. When the first guide rod 3 moves outward, it will drive the first wedge block 4 to move backward. The first wedge block 4 will drive the second wedge block 45 to move backward through the connecting ring, and the second wedge block 45 pushes the opening plate 43 outward to open.

[0045] Before the needle 13 is inserted into the stoma, the opening at the rear of the return head 12 is closed by the opening mechanism, so that the interior of the return head 12 is in a sealed state, which can isolate the needle 13 from the outside air and prevent bacteria from entering the return head 12 and contaminating the needle 13. When the needle 13 moves backward to be inserted into the stoma, the two first guide rods 3 move outward to squeeze the first wedge blocks 4, driving the two first wedge blocks 4 to move backward. The first wedge blocks 4 will drive the second wedge blocks 45 to move backward through the connecting ring. The second compression spring 42 is compressed, and the second wedge block 45 moves backward to contact the opening plate 43. , thereby driving the two opening plates 43 to move outward to open the return head 12, and the third compression spring 44 is compressed, which makes it easier for the needle 13 to be inserted backward into the stoma. After the intestinal fluid return is completed, the needle 13 is pulled out of the stoma. When the first guide rod 3 and the first wedge block 4 are separated, under the action of the second compression spring 42, the first wedge block 4 and the second wedge block 45 are driven to move forward and reset. After the second wedge block 45 and the opening plate 43 are separated, under the action of the third compression spring 44, the two opening plates 43 are driven to move inward and reset to reclose the return head 12, thereby isolating the needle 13 from the outside air.

[0046] like Figure 9-10As shown, it also includes an adding mechanism for adding alcohol into the straight hole inside the first guide rod 3, the adding mechanism is arranged on the isolation cover 2, the adding mechanism includes a loader 5, a second conduit 51, a piston rod 52, a fourth compression spring 53 and an inclined block 54, the front of the left and right sides of the isolation cover 2 are connected to the loader 5 for storing alcohol through a fixed frame, the loader 5 has a one-way valve, the outer end of the loader 5 is connected to the second conduit 51, the second conduit 51 is connected to the outer end of the first guide rod 3, the straight hole and the second conduit 51 are connected The left and right sides of the front of the isolation cover 2 are slidably connected with piston rods 52, and the piston rods 52 are slidably connected to the adjacent loader 5. The inner ends of the piston rods 52 are connected with inclined blocks 54. The inclined surfaces of the inclined blocks 54 are squeezed and fitted with the rear part of the return head 12. The return head 12 moves backward to push the inclined blocks 54 outward, and the inclined blocks 54 push the piston rods 52 to move, so that the alcohol is injected into the first guide rod 3. A fourth compression spring 53 is connected between the outer end of the inclined block 54 and the inner wall of the isolation cover 2. The fourth compression spring 53 is wound around the piston rod 52.

[0047] As mentioned above, the outer end of the first guide rod 3 is connected to the external alcohol input pipe, and alcohol is added through the external alcohol input pipe. In this way, the external alcohol input pipe needs to be connected every time alcohol is added, which is very troublesome. Therefore, an adding mechanism is provided, and people can add alcohol to the loader 5 in advance. When the return head 12 moves backward and contacts the inclined block 54, it drives the inclined block 54 to move outward, driving the piston rod 52 to move outward. The fourth compression spring 53 is compressed, and the piston rod 52 moves outward to inject alcohol through the second conduit 51 and the first guide rod 3 onto the wiping cotton block 33 to add alcohol. When the return head 12 moves forward to reset and separates from the inclined block 54, under the action of the fourth compression spring 53, the inclined block 54 and the piston rod 52 are driven to move inward and reset.

[0048] like Figure 11-12As shown, a sealing mechanism for sealing between the isolation cover 2 and the stoma is also included. The sealing mechanism is arranged at the rear of the isolation cover 2. The sealing mechanism includes an extrusion assembly, a limiting plate 62, a third conduit 63 and an annular airbag 64. The rear end of the isolation cover 2 is connected to the annular airbag 64. The upper and lower sides of the annular airbag 64 are connected to two third conduits 63. The third conduits 63 pass through the isolation cover 2 respectively. The upper and lower sides of the rear of the isolation cover 2 are connected to two limiting plates 62. The limiting plates 62 are connected to the adjacent third conduits 63. Both upper and lower sides of the rear part of the isolation cover 2 are provided with extrusion components for squeezing gas into the annular airbag 64 for inflation; the extrusion component includes a compression plate 6 and an inflatable airbag 61, and the limiting plate 62 is connected to the inflatable airbag 61. The inflatable airbag 61 is connected to the adjacent third conduit 63. Two compression plates 6 are connected to the outside of the opening plate 43. The compression plate 6 and the adjacent inflatable airbag 61 are squeezed and matched. When the compression plate 6 moves outward, it will squeeze the inflatable airbag 61, so that the gas enters the annular airbag 64 through the third conduit 63.

[0049] After the rear end of the return head 12 is fitted to the stoma, a sealing mechanism is provided to strengthen the sealing between the rear end of the return head 12 and the stoma. When the opening plate 43 moves outward, the compression plate 6 is driven to move outward. When the compression plate 6 moves outward, it squeezes the inflatable airbag 61, causing the inflatable airbag 61 to contract and fill the gas into the annular airbag 64 through the third conduit 63. The annular airbag 64 automatically expands to strengthen the sealing between the rear end of the return head 12 and the stoma, thereby further preventing bacterial infection. When the opening plate 43 moves inward, driving the compression plate 6 to move inward, the compression plate 6 releases the inflatable airbag 61, the annular airbag 64 automatically shrinks, and the gas is returned to the inflatable airbag 61.

[0050] like Figure 13-14 As shown, it also includes a limiting mechanism for limiting the front of the return head 12. The limiting mechanism is arranged at the front of the isolation cover 2. The limiting mechanism includes a fixed rod 7, a limiting member 71 and a tension spring 72. The left and right sides of the front of the isolation cover 2 are symmetrically connected with fixed rods 7. The limiting members 71 are slidably connected to the fixed rods 7. The front of the limiting members 71 are respectively provided with inclined surfaces. The limiting members 71 and the return head 12 are snap-fitted together. A tension spring 72 is connected between the outer side of the limiting member 71 and the fixed rod 7. The tension spring 72 is wound around the limiting member 71.

[0051] After the return head 12 moves backward and drives the needle 13 to be inserted into the stoma, in order to prevent the needle 13 from falling out of the stoma, a limiter 71 is set to limit the position of the return head 12. When the return head 12 moves backward and contacts the inclined surface of the limiter 71, it will drive the left limiter 71 to move left and the right limiter 71 to move right, and the tension spring 72 will be stretched. When the return head 12 and the limiter 71 are separated, under the action of the tension spring 72, the limiter 71 will be driven to move back to its original position and re-align. The return-infusion head 12 is restricted, so that the return-infusion head 12 can be restricted, and the needle 13 can be limited to prevent the needle 13 from being separated from the stoma. When the needle 13 needs to be removed, the left limiter 71 is moved to the left and the right limiter 71 is moved to the right. The tension spring 72 is stretched, and the limiter 71 no longer limits the return-infusion head 12. In this way, the return-infusion head 12 and the needle 13 can be pulled forward. Finally, the limiter 71 is released, and under the action of the tension spring 72, the limiter 71 is driven to move and reset.

[0052] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the invention as defined in the claims. Therefore, the detailed description of the disclosed embodiments is intended to be illustrative only and not to limit the present invention, which is to be defined by the claims.

Claims

1. An intestinal fluid reinfusion device with an infection prevention function, comprising an infusion set (1), a first catheter (11), a reinfusion head (12), a needle (13) and a threaded circular plate (14), wherein the bottom of the infusion set (1) is connected to the first catheter (11), the bottom of the first catheter (11) is connected to the reinfusion head (12), the reinfusion head (12) is threadedly connected to the threaded circular plate (14) on a side away from the first catheter (11), and the threaded circular plate (14) is connected to the needle (13) on a side away from the reinfusion head (12), characterized in that: It also includes an isolation cover (2), a first binding strap (21) and a second binding strap (22), wherein the return head (12) is slidably connected to the isolation cover (2), the side of the isolation cover (2) away from the return head (12) is connected to the second binding strap (22), and the side of the isolation cover (2) close to the second binding strap (22) is connected to the first binding strap (21); The invention also includes a disinfection mechanism, which is used to automatically disinfect the needle (13). The disinfection mechanism is arranged on the isolation cover (2). The disinfection mechanism includes a first guide rod (3), a wedge-shaped piece (32) and a wiping cotton piece (33). The isolation cover (2) is slidably connected to the first guide rod (3) which is symmetrically arranged. The first guide rod (3) is connected to the wedge-shaped piece (32). The wedge-shaped piece (32) is provided with symmetrically arranged wedge-shaped surfaces. The wedge-shaped surfaces and the threaded circular plate (14) are extruded and fitted. The wiping cotton piece (33) is connected to the side of one wedge-shaped piece (32) close to the other wedge-shaped piece (32). The wiping cotton piece (33) is located between the two wedge-shaped pieces (32). The first guide rod (3) has a straight hole.

2. The intestinal fluid reinfusion device with anti-infection function according to claim 1, characterized in that: The invention also includes an opening mechanism, which is used to automatically open the opening of the isolation cover (2). The opening mechanism is arranged on the side of the isolation cover (2) close to the first guide rod (3). The opening mechanism includes a pushing component, an opening plate (43) and a third compression spring (44). The side of the isolation cover (2) close to the first guide rod (3) is slidably connected to the symmetrically arranged opening plate (43). The third compression spring (44) is connected between the opening plate (43) and the isolation cover (2). The pushing component is provided at the rear of the isolation cover (2) and is used to push the opening plate (43) to open.

3. The intestinal fluid reinfusion device with anti-infection function according to claim 2, characterized in that: The pushing assembly includes a first wedge block (4), a second guide rod (41), a second compression spring (42) and a second wedge block (45); the isolation cover (2) is connected to a symmetrically arranged second guide rod (41) on a side close to the opening plate (43); the second guide rod (41) is slidably connected to the first wedge block (4); the first wedge block (4) and the adjacent first guide rod (3) are extruded and fitted; the second compression spring (42) is connected between the first wedge block (4) and the isolation cover (2); the first wedge blocks (4) are connected to the symmetrically arranged second wedge blocks (45) via a connecting ring; the second wedge block (45) and the opening plate (43) are extruded and fitted.

4. The intestinal fluid reinfusion device with anti-infection function according to claim 3, characterized in that: The invention also includes an adding mechanism, which is used to add alcohol into the first guide rod (3). The adding mechanism is arranged on the isolation cover (2). The adding mechanism includes a loader (5), a second conduit (51), a piston rod (52), a fourth compression spring (53) and an inclined block (54). The isolation cover (2) is connected to the symmetrically arranged loader (5) on the side close to the return head (12). The loader (5) has a one-way valve. The loader (5) is connected to the second conduit (51) on the side away from the isolation cover (2). The second conduit (51) is connected to the first guide rod (3), the straight hole is communicated with the second conduit (51), the isolation cover (2) is slidably connected to the piston rod (52) symmetrically arranged on the side close to the return head (12), the piston rod (52) and the loader (5) are slidably connected, the piston rod (52) is connected to the side close to the return head (12) with the inclined block (54), the inclined surface of the inclined block (54) is squeezed and fitted with the return head (12), and the fourth compression spring (53) is connected between the inclined block (54) and the isolation cover (2).

5. The intestinal fluid reinfusion device with anti-infection function according to claim 4, characterized in that: The invention also includes a sealing mechanism, which is used to seal between the isolation cover (2) and the stoma. The sealing mechanism is arranged on the isolation cover (2), and includes an extrusion assembly, a limiting plate (62), a third conduit (63) and an annular airbag (64). The isolation cover (2) is connected to the annular airbag (64) on the side close to the first wedge block (4), and the annular airbag (64) is connected to the symmetrically arranged third conduit (63). The isolation cover (2) is connected to the symmetrically arranged limiting plate (62) on the side close to the third conduit (63), and the limiting plate (62) and the third conduit (63) are connected. The isolation cover (2) is provided with the extrusion assembly, and the extrusion assembly is used to squeeze gas into the annular airbag (64) for inflation.

6. The intestinal fluid reinfusion device with infection prevention function according to claim 5, characterized in that: The extrusion assembly comprises a compression plate (6) and an inflatable airbag (61); the limiting plate (62) is connected to the inflatable airbag (61); the inflatable airbag (61) is communicated with the third conduit (63); the opening plate (43) is connected to the symmetrically arranged compression plate (6); the compression plate (6) and the inflatable airbag (61) are extruded and matched.

7. The intestinal fluid reinfusion device with anti-infection function according to claim 6, characterized in that: The invention also includes a limiting mechanism, which is used to limit the return head (12). The limiting mechanism is arranged on the side of the isolation cover (2) close to the return head (12). The limiting mechanism includes a fixed rod (7), a limiting member (71) and a tension spring (72). The side of the isolation cover (2) close to the return head (12) is connected to a plurality of the fixed rods (7). The fixed rods (7) are slidably connected to the limiting member (71). The limiting member (71) is provided with an inclined surface. The limiting member (71) and the return head (12) are snap-fitted. The tension spring (72) is connected between the limiting member (71) and the fixed rod (7).

8. The intestinal fluid reinfusion device with anti-infection function according to claim 1, characterized in that: It also includes a first compression spring (31), which is connected between the wedge-shaped piece (32) and the isolation cover (2).

9. The intestinal fluid reinfusion device with anti-infection function according to claim 1, characterized in that: The wiping cotton block (33) has adsorption properties.

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