Nasal feeding syringe

Abstract

The invention relates to a nasal feeding syringe, comprising: an injection tube comprising an injection head arranged at the bottom end of the injection tube; the injection assembly is used for sucking and injecting liquid and comprises a liquid cavity located in the injection pipe, a liquid inlet pipe located on the side wall of the injection pipe and a core rod matched with the injection pipe and used for pushing the liquid; the grinding assembly is used for grinding the tablets into particles and comprises a grinding cavity located below the liquid cavity, a tablet feeding structure located on the side wall of the injection tube, a grinding cone located in the grinding cavity and a rotating rod connected with the grinding cone and located in the core rod, and the rotating rod drives the grinding cone to rotate; a plurality of liquid outlet holes for liquid in the liquid cavity to flow into the grinding cavity are formed in the surface of the separation disc. Compared with the prior art, grinding and dissolving of medicine can be achieved at the same time, a dissolving part does not need to be additionally arranged outside, full utilization of the medicine is facilitated, medicine liquid exosmosis is reduced, meanwhile, the operation process is accelerated, and the operation burden of medical staff is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a nasogastric feeding syringe. Background Art

[0002] Traditional nasogastric feeding syringes are used when patients need nasogastric feeding of drugs. Since the tablets are large, it is slow to dissolve them directly in water. They need to be ground and then dissolved in water before being drawn into the syringe. However, during the dissolution process, drugs are easily wasted. Solid drugs must undergo complex dissolution steps before clinical application to obtain liquid drugs. This not only increases the operating burden of medical staff, but improper operation may lead to incomplete dissolution of drugs, thus affecting the treatment effect.

[0003] Patent announcement number CN213251384U discloses a nasogastric oral medicine auxiliary syringe, including a syringe body, one end of the syringe body is provided with an infusion tube, a rubber stopper is slidably connected in the syringe body, one end of the rubber stopper is vertically provided with a vertical plate and a horizontal plate, the other end of the vertical plate and the horizontal plate extends to the outside of the syringe body, and the other end of the vertical plate and the horizontal plate is connected with a circular plate, the top of the syringe body is connected with a through groove, the top of the through groove is coaxially provided with a material holding pipe, the material holding pipe is threadedly connected with a grinding block, the top of the grinding block is coaxially provided with a vertical rod, the through groove is coaxially provided with a support plate, and the upper connection of the support plate is provided with a plurality of through holes. However, the grinding block in the syringe is arranged on the side wall of the syringe body, and the tablets are ground by pressing. It is easy to control the pressing force, and the container causes liquid extravasation or grinding difficulties. In addition, during the grinding process, a certain pressure will be generated on the liquid in the syringe, which is easy to cause liquid to seep out. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a nasogastric feeding syringe, which can simultaneously grind and dissolve the drug without adding a dissolving part on the outside, which is conducive to the full utilization of the drug and reduces the extravasation of the drug solution. At the same time, it speeds up the operation process and helps to reduce the operating burden of medical staff.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A nasogastric feeding syringe, comprising:

[0007] An injection tube, including an injection head disposed at a bottom end thereof;

[0008] An injection assembly for sucking and injecting liquid, comprising a liquid cavity located in the injection tube, a liquid inlet tube located on the side wall of the injection tube, and a core rod cooperating with the injection tube for pushing the liquid;

[0009] A grinding assembly for grinding tablets into particles, comprising a grinding chamber located below the liquid chamber, a tablet feeding structure located on the side wall of the injection tube, a grinding cone located inside the grinding chamber, and a rotating rod connected to the grinding cone and located inside the core rod, wherein the rotating rod drives the grinding cone to rotate;

[0010] And a separation plate is located between the liquid chamber and the grinding chamber, and a surface of the separation plate is provided with a plurality of liquid outlet holes for the liquid in the liquid chamber to flow into the grinding chamber.

[0011] Furthermore, a top cover is provided on the top of the liquid chamber, and the core rod passes through the top cover and enters the liquid chamber;

[0012] A connecting tube having one end connected to the separation disk and one end connected to the top cover is arranged in the liquid cavity.

[0013] Furthermore, the portion of the rotating rod located in the liquid chamber is arranged inside the connecting tube;

[0014] The top end height of the rotating rod is higher than the top end height of the core rod.

[0015] Furthermore, the rotating rod has the freedom to move up and down, the rotating rod is slidably connected to the connecting tube, and the rotating rod can move up and down or rotate along the connecting tube.

[0016] Furthermore, there is a certain gap between the outer wall of the rotating rod and the inner wall of the connecting tube, so that it does not affect the up and down movement and rotation of the rotating rod, and can limit the position of the rotating rod so that it does not shake when moving up and down or rotating.

[0017] Furthermore, the part of the core rod located in the liquid chamber is arranged outside the connecting tube, and a piston is arranged at the lower end of the core rod. The inner wall of the piston is slidably connected to the outer wall of the connecting tube, and the outer wall of the piston is slidably connected to the inner wall of the injection tube.

[0018] Furthermore, the liquid outlet holes are distributed in a circular shape around the connecting tube.

[0019] Furthermore, a rotating handle is provided on the top of the rotating rod.

[0020] Furthermore, a first sealing cover is provided at the end of the liquid inlet pipe.

[0021] Furthermore, the tablet feeding structure comprises:

[0022] A feed trough provided on the side wall of the injection tube, which is located outside the grinding chamber;

[0023] and a sealing ring cover which is sleeved on the outside of the injection tube and can rotate around the sealing ring cover, and the sealing ring cover is provided with a slot matching the feeding slot. When the slot rotates to the feeding slot, the feeding slot is exposed, and tablets are put into the feeding slot. When the slot rotates to the back of the feeding slot, the feeding slot is covered by the sealing ring cover, so that the grinding chamber is sealed, and liquid does not seep in when liquid flows in.

[0024] Furthermore, guide rings are respectively provided on the upper and lower sides of the feed trough, guide grooves matching the guide rings are respectively provided on the upper and lower sides of the sealing ring cover, and the guide ring is slidably connected to the guide grooves.

[0025] Furthermore, the sealing ring cover is further provided with a limiting plate for fixing, which includes a first limiting plate located above the slot and a second limiting plate located above the back of the slot, the first limiting plate is provided with a first limiting hole, and the second limiting plate is provided with a second limiting hole;

[0026] An annular connector is arranged above the sealing ring cover and is sleeved on the outer wall of the injection tube. The annular connector includes a groove for the first limiting plate and the second limiting plate to slide. The annular connector is provided with a limiting rod that can be pressed and inserted into the first limiting hole or the second limiting hole.

[0027] Furthermore, the limiting rod is located above the slot, and when the slot is rotated to the feed chute, the position of the first limiting plate corresponds to the position of the limiting rod, and at this time, the limiting rod is pressed to insert it into the first limiting hole, and the position of the sealing ring cover is fixed, and at this time, the feed chute is exposed;

[0028] When the slot is rotated to the back of the feed trough, the position of the second limit plate corresponds to the position of the limit rod. At this time, the limit rod is pressed and inserted into the second limit hole. The position of the sealing ring cover is fixed, and the feed trough is covered by the sealing ring cover.

[0029] Furthermore, a U-shaped frame is installed on the annular connector, one end of the limiting rod passes through the U-shaped frame toward one side of the annular connector, and the other end passes through the annular connector to reach the groove, thereby passing through the first limiting hole or the second limiting hole.

[0030] Furthermore, a handle is provided at one end of the limiting rod passing through the U-shaped frame.

[0031] Furthermore, a spring is arranged on the limiting rod.

[0032] Furthermore, sealing strips for sealing are arranged around the groove; and a sealing ring is arranged on one side of the guide groove facing the groove.

[0033] Furthermore, the grinding chamber comprises a grinding chamber body and a grinding chamber cone connected vertically, the grinding chamber body is connected to the liquid chamber, and the bottom of the grinding chamber cone is connected to the injection head;

[0034] The grinding cone includes a cylindrical main body connected to the rotating rod, and a cone connected to the cylindrical main body and adapted to the grinding chamber cone. After the tablets put into the grinding chamber fall onto the grinding chamber cone, the tablets are ground and squeezed by the grinding cone to become smaller particles. The setting of the cone can increase the contact surface between the grinding cone and the grinding chamber cone, thereby increasing the squeezing force.

[0035] Furthermore, the surface of the grinding cone is provided with a plurality of protruding strips for grinding, and liquid can pass through the middle of the protruding strips. When the liquid passes through the middle of the protruding strips at a slow speed, the injection in the injection head is slow, and at this time, the rotating rod can be pulled upward to make the grinding cone not in contact with the grinding chamber.

[0036] Furthermore, a filter screen is provided on the injection head to prevent ground tablet particles from entering the human body through the injection head, thereby avoiding any impact on the patient.

[0037] Furthermore, the filter screen is detachably connected to the injection head, so that a large water flow rate can be achieved during the syringe cleaning process.

[0038] Furthermore, a second sealing cover is provided on the injection head.

[0039] Furthermore, the side wall of the injection tube is provided with scale lines.

[0040] Compared with the prior art, the present invention has the following advantages:

[0041] (1) By setting up a grinding assembly, when grinding tablets, the grinding cone with multiple protruding strips on the bottom is driven to rotate by the rotating rod, and the large-particle tablets can be ground into small-particle tablets by utilizing the contact, extrusion and friction between the protruding strips and the tablets. This process greatly increases the specific surface area of ​​the tablets, so that when they are subsequently in contact with liquid, they can undergo a dissolution reaction more quickly and fully, thereby simplifying the dissolution and injection process of the tablets, reducing the operating burden of medical staff, and reducing medication errors caused by improper operation. In addition, the range of tablet types that can be administered by the syringe of the present invention is expanded, so that more tablets with different characteristics can be efficiently dissolved and accurately injected with the help of the device, thereby enhancing the practicality and versatility of the device in clinical scenarios.

[0042] (2) When using the syringe of the present invention, after the tablet is dissolved into a solution, the user only needs to open the second sealing cover of the injection head and connect the external injection tube, and then push the core rod to perform the push injection operation. The whole process is clear and easy to use. In addition, with the help of the scale lines fixed on the surface of the injection tube, the user can accurately control the dosage of the pushed drug, which effectively improves the scientificity and safety of drug use.

[0043] (3) The syringe of the present invention combines the injection tube and the grinding assembly, and sets the grinding chamber at the bottom of the liquid chamber, so that the liquid can fully flow into the grinding chamber, so that the tablet particles in the grinding chamber are fully dissolved, reducing tablet residues.

[0044] (4) The present invention sets the liquid inlet on the side wall of the injection tube so that liquid extraction and liquid injection are set at different positions, which can avoid soaking the tablet particles to be ground during the process of extracting the liquid medicine, thereby affecting the grinding effect.

[0045] (5) The present invention arranges a connecting tube in the liquid chamber, arranges a rotating rod that can move up and down and rotate in the connecting tube, and arranges a core rod outside the connecting tube. When grinding, the rotating rod is moved down and rotated to grind; when liquid flows from the liquid chamber into the grinding chamber, the rotating rod is moved up to leave a channel for the liquid to flow to the injection port; when cleaning, the rotating rod is repeatedly moved up and down or rotated to fully clean the grinding cone. Through the simple setting of the rotating rod, the grinding of tablets can be easily achieved, the force control is simple, and no pressure is brought to the liquid in the injection tube, thereby avoiding liquid extravasation and waste of liquid medicine.

[0046] (6) The injection head is provided with a filter to prevent the ground tablet particles from entering the human body through the injection head, thereby avoiding any impact on the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of the syringe shown in Example 1 (with the feed slot exposed);

[0048] Figure 2 It is a schematic diagram of the structure of the syringe shown in Example 1 (the feed slot is shielded);

[0049] Figure 3 It is a schematic diagram of the half-section structure of the syringe shown in Example 1;

[0050] Figure 4 It is a schematic diagram of the internal structure of the syringe shown in Example 1;

[0051] Figure 5 It is a structural schematic diagram of the core rod, the connecting tube, and the rotating rod shown in Example 1;

[0052] Figure 6It is a schematic diagram of the disassembled structure of the sealing ring cover shown in Example 1;

[0053] Figure 7 This is a schematic diagram of the structure of the U-shaped frame shown in Example 1.

[0054] Description of the markings in the figure:

[0055] 1-injection tube, 11-injection head, 12-scale line, 13-second sealing cover;

[0056] 2-injection assembly, 21-liquid chamber, 22-liquid inlet tube, 221-first sealing cover, 23-core rod, 231-piston, 24-top cover, 25-connecting cylinder;

[0057] 3-grinding assembly, 31-grinding chamber, 311-grinding chamber body, 312-grinding chamber cone, 32-tablet feeding structure, 321-feeding trough, 322-sealing ring cover, 3221-slot, 3222-guide groove, 3223-first limiting plate, 3224-second limiting plate, 3225-first limiting hole, 323-guide ring, 324-annular connector, 3241-groove, 325-limiting rod, 3251-U-shaped frame, 3252-handle, 3253-spring, 33-grinding cone, 331-cylindrical body, 332-cone, 333-protruding strip, 34-rotating rod, 341-rotating handle;

[0058] 4-separating plate, 41-liquid outlet. DETAILED DESCRIPTION

[0059] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments. In the following embodiments or embodiments, if there is no special description of the functional components or structures, it means that they are all conventional components or conventional structures used in the art to achieve the corresponding functions.

[0060] It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] Example 1

[0063] A nasogastric feeding syringe, such as Figures 1 to 4 As shown, including:

[0064] The injection tube 1 includes an injection head 11 disposed at the bottom end thereof;

[0065] An injection assembly 2 for sucking and injecting liquid, comprising a liquid chamber 21 located in the injection tube 1, a liquid inlet tube 22 located on the side wall of the injection tube 1, and a core rod 23 cooperating with the injection tube 1 for pushing the liquid;

[0066] A grinding assembly 3 for grinding tablets into particles, comprising a grinding chamber 31 located below the liquid chamber 21, a tablet feeding structure 32 located on the side wall of the injection tube 1, a grinding cone 33 located inside the grinding chamber 31, and a rotating rod 34 connected to the grinding cone 33 and located inside the core rod 23, wherein the rotating rod 34 drives the grinding cone 33 to rotate;

[0067] A separation plate 4 is located between the liquid chamber 21 and the grinding chamber 31 , and a surface of the separation plate 4 is provided with a plurality of liquid outlet holes 41 for the liquid in the liquid chamber 21 to flow into the grinding chamber 31 .

[0068] In this embodiment, a top cover 24 is provided on the top of the liquid chamber 21, and the core rod 23 passes through the top cover 24 and enters the liquid chamber 21;

[0069] A connecting tube 25 is disposed in the liquid chamber 21 , one end of which is connected to the separation disk 4 and the other end of which is connected to the top cover 24 .

[0070] In this embodiment, the portion of the rotating rod 34 located in the liquid chamber 21 is disposed inside the connecting tube 25;

[0071] The top of the rotating rod 34 is higher than the top of the core rod 23 .

[0072] In this embodiment, if Figure 5As shown, the part of the core rod 23 located in the liquid chamber 21 is arranged outside the connecting tube 25, and a piston 231 is arranged at the lower end of the core rod 23. The inner wall of the piston 231 is slidably connected to the outer wall of the connecting tube 25, and the outer wall of the piston 231 is slidably connected to the inner wall of the injection tube 1.

[0073] In this embodiment, further, the rotating rod 34 has the freedom to move up and down, and the rotating rod 34 is slidably connected to the connecting tube 25, and the rotating rod 34 can move up and down or rotate along the connecting tube 25. There is a certain gap between the outer wall of the rotating rod 34 and the inner wall of the connecting tube 25, so that it does not affect the up and down movement and rotation of the rotating rod 34, and can limit the position of the rotating rod 34, so that it does not shake when it moves up and down or rotates.

[0074] In this embodiment, the liquid outlet holes 41 are distributed in a circular shape around the connecting tube 25 .

[0075] In this embodiment, a rotating handle 341 is provided on the top of the rotating rod 34 .

[0076] In this embodiment, a first sealing cover 221 is disposed at the end of the liquid inlet pipe 22 .

[0077] In this embodiment, if Figure 6 As shown, the tablet feeding structure 32 includes:

[0078] A feed trough 321 disposed on the side wall of the injection tube 1, which is located outside the grinding chamber 31;

[0079] A sealing ring cover 322 is sleeved on the outside of the injection tube 1 and can rotate around it, and a slot 3221 matching the feed slot 321 is provided on the sealing ring cover 322. When the slot 3221 rotates to the feed slot 321, the feed slot 321 is exposed, and tablets are put into the feed slot 321. When the slot 3221 rotates to the back of the feed slot 321, the feed slot 321 is covered by the sealing ring cover 322, so that the grinding chamber 31 is sealed, so that liquid does not seep in when liquid flows in.

[0080] In this embodiment, guide rings 323 are respectively provided on the upper and lower sides of the feed trough 321 , guide grooves 3222 matching the guide rings 323 are respectively provided on the upper and lower sides of the sealing ring cover 322 , and the guide ring 323 is slidably connected to the guide grooves 3222 .

[0081] In this embodiment, the sealing ring cover 322 is further provided with a limiting plate for fixing, which includes a first limiting plate 3223 located above the slot 3221, and a second limiting plate 3224 located above the back of the slot 3221, the first limiting plate 3223 is provided with a first limiting hole 3225, and the second limiting plate 3224 is provided with a second limiting hole;

[0082] An annular connector 324 is arranged above the sealing ring cover 322 and is sleeved on the outer wall of the injection tube 1. The annular connector 324 includes a groove 3241 for the first limiting plate 3223 and the second limiting plate 3224 to slide. The annular connector 324 is provided with a limiting rod 325 that can be pressed and inserted into the first limiting hole 3225 or the second limiting hole.

[0083] In this embodiment, the limiting rod 325 is located above the slot 3221. When the slot 3221 rotates to the feeding trough 321, the position of the first limiting plate 3223 corresponds to the position of the limiting rod 325. At this time, the limiting rod 325 is pressed to be inserted into the first limiting hole 3225, and the position of the sealing ring cover 322 is fixed. At this time, the feeding trough 321 is exposed.

[0084] When the slot 3221 rotates to the back of the feed trough 321 , the position of the second limiting plate 3224 corresponds to the position of the limiting rod 325 . At this time, the limiting rod 325 is pressed and inserted into the second limiting hole. The position of the sealing ring cover 322 is fixed. At this time, the feed trough 321 is covered by the sealing ring cover 322 .

[0085] In this embodiment, if Figure 7 As shown, a U-shaped frame 3251 is installed on the annular connector 324, one end of the limiting rod 325 passes through the U-shaped frame 3251 toward one side of the annular connector 324, and the other end passes through the annular connector 324 to reach the groove 3241, thereby passing through the first limiting hole 3255 or the second limiting hole.

[0086] In this embodiment, a handle 3252 is provided at one end of the limiting rod 325 passing through the U-shaped frame 3251 .

[0087] In this embodiment, a spring 3253 is disposed on the limiting rod 325 .

[0088] In this embodiment, sealing strips for sealing are arranged around the groove 3221 ; and a sealing ring is arranged on one side of the guide groove 3222 facing the groove 3221 .

[0089] In this embodiment, the grinding chamber 31 includes a grinding chamber body 311 and a grinding chamber cone 312 connected vertically, the grinding chamber body 311 is connected to the liquid chamber 21, and the bottom of the grinding chamber cone 312 is connected to the injection head 11;

[0090] The grinding cone 33 includes a cylindrical body 331 connected to the rotating rod 34, and a cone 332 connected to the cylindrical body 331 and adapted to the grinding chamber cone 312. After the tablets put into the grinding chamber 31 fall into the grinding chamber cone 312, the tablets are ground and squeezed by the grinding cone 33 to become smaller particles. The setting of the cone 332 can increase the contact surface between the grinding cone 33 and the grinding chamber cone 312, thereby increasing the squeezing force.

[0091] In this embodiment, the surface of the grinding cone 33 is provided with a plurality of protruding strips 333 for grinding, and liquid can pass through the middle of the protruding strips 333. When the liquid passes through the middle of the protruding strips 333 at a slow speed, the injection in the injection head 11 is slow. At this time, the rotating rod 34 can be pulled upward to make the grinding cone 33 not in contact with the grinding chamber 31.

[0092] In this embodiment, a filter screen is provided on the injection head 11 to prevent the ground tablet particles from entering the human body through the injection head 11, thereby avoiding any impact on the patient.

[0093] In this embodiment, the filter screen is detachably connected to the injection head 11, so that a large water flow rate can be achieved during the syringe cleaning process.

[0094] In this embodiment, a second sealing cover 13 is provided on the injection head 11 .

[0095] In this embodiment, the side wall of the injection tube 1 is provided with scale lines 12 .

[0096] The working principle of nasogastric feeding syringe of the present invention is:

[0097] When the nasogastric feeding syringe is not in use, the slot 3221 of the sealing ring cover 322 is rotated to the back of the feed trough 321, and the feed trough 321 is covered by the sealing ring cover 322. At this time, the second limiting hole of the second limiting plate 3224 corresponds to the limiting rod 325. The handle 3252 is pressed to make the limiting rod 325 pass through the second limiting hole, thereby fixing the position of the sealing ring cover 322. Due to the seal and sealing ring provided on the sealing ring cover 322, the sealing ring cover 322 is tightly fitted to the outer wall of the injection tube 1. At the same time, the end of the liquid inlet tube 22 is blocked by the first sealing cover 221, and the injection head 11 is blocked by the second sealing cover 22. The interior of the injection tube 1 is in a sealed state to maintain the cleanliness and sealing of the syringe 1.

[0098] When tablets need to be loaded, the handle 3252 is pulled outward so that the limiting rod 325 overcomes the elastic force of the spring 3253 and shrinks into the U-shaped frame 3251, separating the limiting rod 325 from the second limiting hole, rotating the sealing ring cover 322 so that the guide groove 3222 slides along the guide ring 323, driving the first limiting plate 3223 and the second limiting plate 3224 to slide along the groove 3241, thereby aligning the slot 3221 with the feed trough 321, and aligning the limiting rod 325 with the first limiting hole 3225, loosening the handle 3252, and inserting the limiting rod 325 into the first limiting hole 3225 under the elastic force of the spring 3253, fixing the position of the sealing ring cover 322 to prevent it from accidentally sliding, and exposing the feed trough 321. At this time, the rotating rod 34 is moved downward to make the cone 332 of the grinding cone 33 contact the inner wall of the grinding chamber cone 312 to prevent the tablets from falling from the gap between the grinding cone 33 and the inner wall of the grinding chamber 31 to the injection head 11 when being put into the injection head.

[0099] The tablets are put into the feeding trough 321, and the handle 3252 is pulled outward after being put into the feeding trough 321, so that the limiting rod 325 overcomes the elastic force of the spring 3253 and shrinks into the U-shaped frame 3251, and the limiting rod 325 is separated from the first limiting hole 3225, and the sealing ring cover 322 is rotated to make the guide groove 3222 slide along the guide ring 323, drive the first limiting plate 3223 and the second limiting plate 3224 to slide along the groove 3241, and then align the limiting rod 325 with the first limiting hole 3225, release the handle 3252, and insert the limiting rod 325 into the second limiting hole under the elastic force of the spring 3253, fix the position of the sealing ring cover 322 to prevent it from sliding accidentally, and seal the grinding chamber 31.

[0100] At this time, hold the rotating handle 341 and rotate the rotating rod 34. Since there is a certain gap between the outer wall of the rotating rod 34 and the inner wall of the connecting tube 25, the rotating rod 34 can smoothly rotate around its own central axis without shaking or offsetting. Since the surface of the grinding cone 33 is provided with a plurality of protruding strips 33, during the rotation process, the protruding strips 33 will continuously contact, squeeze and rub against the tablets in the grinding chamber 31, gradually grinding the larger tablets into smaller particles. Through such a grinding process, the specific surface area of ​​the tablets is greatly increased, so that they can be dissolved more quickly and fully with the liquid later, thereby improving the dissolution efficiency.

[0101] When the grinding is completed, pull out the first sealing cap 221 in the liquid inlet tube 22 on one side of the injection tube 1, insert one end of the liquid inlet tube 22 into the liquid, then pull the core rod 23 upward to drive the piston 231 to move upward, thereby sucking the liquid into the liquid inlet tube 22 and into the liquid cavity 21. After observing the injection of a proper amount of liquid through the scale line 12, insert the first sealing cap 221 back into the liquid inlet tube 22 to ensure the sealing of the liquid cavity 21 and prevent liquid leakage.

[0102] The core rod 23 is pushed downward to drive the piston 231 to move downward. Since a partition plate 4 with a liquid outlet 41 is provided between the liquid chamber 21 and the grinding chamber 31, the liquid flows from the liquid chamber 21 into the grinding chamber 31 through the liquid outlet 41, and is fully mixed and contacted with the ground tablet particles, so that the tablet particles are quickly dissolved to form a solution that can be injected.

[0103] When the tablet particles are completely dissolved in the grinding chamber 31 to form a solution, the injection head 11 of the syringe 1 is turned upward to open the second sealing cover 13, which is connected to the external injection pipe to perform the injection operation. During the injection, hold and push the core rod 23 downward, so that the inner wall of the core rod 23 moves downward along the connecting tube 25 and the outer wall moves downward along the syringe 1, thereby applying pressure to the solution inside the syringe 1. Under the action of pressure, the solution will be discharged outward through the injection head 11 fixed at the bottom of the syringe 1, so as to achieve the purpose of injecting the drug into the patient's body. In addition, during the injection process, the filter screen provided on the injection head 11 prevents the ground tablet particles from entering the human body through the injection head 11, thereby avoiding affecting the patient. At the same time, the user can also accurately control the dosage of the injected drug by observing the scale lines 12 provided on the surface of the syringe 1 to meet different medication needs.

[0104] After one injection is completed, if there are residual tablet particles left in the liquid chamber 21 or the grinding chamber 31, the above operation can be repeated again, and a small amount of liquid can be added from the liquid inlet tube 22 again to completely dissolve the tablet particles and inject them into the patient's body.

[0105] When the injection is completed, the syringe is cleaned and restored to the unused state. The first sealing cover 221 in the liquid inlet tube 22 on one side of the injection tube 1 is opened, and one end of the liquid inlet tube 22 is inserted into clean water. Then, the core rod 23 is pulled upward to drive the piston 231 to move upward, thereby sucking clean water into the liquid inlet tube 22 and into the liquid cavity 21. At this time, the second sealing cover 13 at the injection head 11 is opened, and the core rod 23 is pushed downward to drive the piston 231 to move downward, so that the clean water is discharged outward through the injection head 11 under pressure. During the cleaning process, the rotating rod 34 is continuously rotated and the rotating rod 34 is continuously moved up and down to increase the contact area between the grinding cone 33 and the clean water. The above process is repeated until the syringe is cleaned.

[0106] There are other ways to clean the syringe, which include opening the first sealing cover 221 in the liquid inlet pipe 22 on one side of the syringe 1, opening the second sealing cover 13 at the injection head 11, rotating the sealing ring cover 322, aligning the slot 3221 with the feed slot 321, and flushing the syringe with water from any position of the liquid inlet pipe 22, the injection head 11, and the feed slot 321. Other methods such as ultrasonic cleaning may also be used.

[0107] Although the present invention has been described in detail above by means of general description, specific implementation methods and tests, it is obvious to those skilled in the art that some modifications or improvements may be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A nasogastric feeding syringe, characterized in that: include: An injection tube (1) comprising an injection head (11) arranged at the bottom end thereof; An injection assembly (2) for sucking and injecting liquid, comprising a liquid chamber (21) located in the injection tube (1), a liquid inlet tube (22) located on the side wall of the injection tube (1), and a core rod (23) cooperating with the injection tube (1) for pushing the liquid; A grinding assembly (3) for grinding tablets into particles, comprising a grinding chamber (31) located below the liquid chamber (21), a tablet feeding structure (32) located on the side wall of the injection tube (1), a grinding cone (33) located inside the grinding chamber (31), and a rotating rod (34) connected to the grinding cone (33) and located inside the core rod (23), wherein the rotating rod (34) drives the grinding cone (33) to rotate; and a separation plate (4) located between the liquid chamber (21) and the grinding chamber (31), the surface of which is provided with a plurality of liquid outlet holes (41) for the liquid in the liquid chamber (21) to flow into the grinding chamber (31).

2. A nasogastric feeding syringe according to claim 1, characterized in that: A top cover (24) is provided on the top of the liquid chamber (21), and the core rod (23) passes through the top cover (24) and enters the liquid chamber (21); A connecting tube (25) is provided in the liquid cavity (21), one end of which is connected to the separation disk (4) and the other end of which is connected to the top cover (24).

3. A nasogastric feeding syringe according to claim 2, characterized in that: The portion of the rotating rod (34) located in the liquid chamber (21) is arranged inside the connecting tube (25); The top end height of the rotating rod (34) is higher than the top end height of the core rod (23).

4. A nasogastric feeding syringe according to claim 2, characterized in that: The portion of the core rod (23) located in the liquid chamber (21) is arranged outside the connecting tube (25), and a piston (231) is arranged at the lower end of the core rod (23), and the inner wall of the piston (231) is slidably connected to the outer wall of the connecting tube (25), and the outer wall of the piston (231) is slidably connected to the inner wall of the injection tube (1).

5. A nasogastric feeding syringe according to claim 1, characterized in that: The tablet feeding structure (32) comprises: A material feeding trough (321) provided on the side wall of the injection tube (1), which is located outside the grinding chamber (31); and a sealing ring cover (322) which is sleeved on the outside of the injection tube (1) and can rotate around the injection tube (1), wherein the sealing ring cover (322) is provided with a groove (3221) which matches the feed groove (321).

6. A nasogastric feeding syringe according to claim 5, characterized in that: The upper and lower sides of the feed trough (321) are respectively provided with guide rings (323), and the upper and lower sides of the sealing ring cover (322) are respectively provided with guide grooves (3222) matching the guide rings (323), and the guide rings (323) are slidably connected to the guide grooves (3222).

7. A nasogastric feeding syringe according to claim 6, characterized in that: Sealing strips for sealing are arranged around the groove (3221); and a sealing ring is arranged on the side of the guide groove (3222) facing the groove (3221).

8. A nasogastric feeding syringe according to claim 5, characterized in that: The sealing ring cover (322) is further provided with a limiting plate for fixing, comprising a first limiting plate (3223) located above the slot (3221), and a second limiting plate (3224) located above the back side of the slot (3221), the first limiting plate (3223) being provided with a first limiting hole (3225), and the second limiting plate (3224) being provided with a second limiting hole; An annular connector (324) is arranged above the sealing ring cover (322) and is sleeved on the outer wall of the injection tube (1). The annular connector (324) includes a groove (3241) for the first limiting plate (3223) and the second limiting plate (3224) to slide. The annular connector (324) is provided with a limiting rod (325) that can be pressed and inserted into the first limiting hole (3225) or the second limiting hole.

9. A nasogastric feeding syringe according to claim 1, characterized in that: The grinding chamber (31) comprises a grinding chamber body (311) and a grinding chamber cone (312) which are connected vertically, the grinding chamber body (311) is connected to the liquid chamber (21), and the bottom of the grinding chamber cone (312) is connected to the injection head (11); The grinding cone (33) comprises a cylindrical main body (331) connected to the rotating rod (34), and a cone (332) connected to the cylindrical main body (331) and adapted to the grinding chamber cone (312).

10. A nasogastric feeding syringe according to claim 1, characterized in that: The injection head (11) is provided with a filter screen.

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