Tube feeding medicine grinding injector

Abstract

The utility model relates to a tube feeding medicine grinding injector, belongs to the technical field of medical instruments, and solves at least one of the problems that when an existing medicine grinding injector is used for grinding medicine, medicine powder easily enters a nipple to block the nipple, and the medicine powder is easily scattered to the outside from the nipple to cause medicine waste and inaccurate dosage. The syringe comprises a needle cylinder, a grinding assembly and a plugging device, the needle cylinder comprises a cylinder body and a nipple, the grinding assembly is arranged in the cylinder body, and the grinding assembly and the cylinder body are matched to be used for grinding medicine and injecting the medicine; the plugging device is arranged on the grinding assembly in a penetrating mode and used for plugging the nipple when the medicine is ground. By arranging the plugging device to plug the nipple when medicine is ground, medicine powder is prevented from entering the nipple to cause plugging, and meanwhile the medicine powder can be prevented from being scattered to the outside from the nipple to cause medicine waste and inaccurate dosage.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a tube feeding medicine grinding syringe. Background Art

[0002] Enteral nutrition via a feeding tube is the preferred method of nutritional support for patients with a functioning gastrointestinal tract who are unable to eat orally. This method of providing nutrition is also commonly used to administer medications when the patient is unable to swallow safely.

[0003] In clinical medicine, traditional nasogastric feeding is to grind the tablets through a grinding device, then draw out the syringe piston, pour the ground tablets into the syringe, insert the syringe piston to extract glucose or pure water for dilution and dissolution, and then inject the dissolved liquid into the nasogastric tube or stomach tube into the patient's body. Some existing syringes can complete the grinding directly in the device body, which is convenient for drug administration. However, when the existing syringes with drug grinding function are grinding the drugs, it is easy for the ground drug powder to enter the nipple, causing nipple blockage. At the same time, there is a defect that the drug powder is spilled from the nipple to the outside, resulting in drug waste and inaccurate dosage. Utility Model Content

[0004] In view of the above analysis, the utility model aims to provide a tube feeding drug grinding syringe to solve at least one of the problems that drug powder easily enters the nipple when grinding drugs, causing nipple blockage, and drug powder easily spills from the nipple to the outside, causing drug waste and inaccurate dosage.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] A tube feeding drug grinding syringe, comprising a syringe, a grinding assembly and a plugging device, wherein the syringe comprises a barrel and a nipple, the grinding assembly is arranged in the barrel, and the grinding assembly cooperates with the barrel to grind and inject the drug; the plugging device is passed through the grinding assembly and is used to plug the nipple when grinding the drug;

[0007] The occluder includes an occluding rod, a spring and a fixed lock; the spring is sleeved on the occluding rod and can rotate on the occluding rod, and the spring is used to apply an elastic thrust to the occluding rod; the occluding rod is inserted into the grinding assembly, and can slide and rotate in the grinding assembly, and can be extended or retracted into the grinding assembly; the fixed lock is fixedly installed on the grinding assembly, and is used to lock or unlock the occluding rod; when grinding the medicine, the occluding rod is unlocked by the fixed lock, and the occluding rod extends out of the grinding assembly under the elastic thrust of the spring, and is pressed against the nipple to block the nipple; when injecting the medicine, the occluding rod is retracted into the grinding assembly to release the blockage of the nipple, and the occluding rod is locked by the fixed lock, so that the nipple and the inner cavity of the cylinder are connected.

[0008] Furthermore, the blocking rod includes a first column section and a second column section, the diameter of the first column section is larger than the inner diameter of the nipple; the first column section is provided with a blocking head with an arc-shaped spherical surface; and the second column section is provided with a threaded groove.

[0009] Furthermore, the grinding assembly includes a piston rod, a piston and a grinding head which are fixedly connected in sequence; the grinding assembly also includes a through hole which passes through the piston rod, the piston and the grinding head.

[0010] Furthermore, the through hole includes a first hole segment and a second hole segment; the first column segment is inserted into the first hole segment, and the second column segment is inserted into the second hole segment.

[0011] Furthermore, the fixed lock includes a lock seat and a lock core, the lock seat is fixedly mounted on the piston rod; a lock slot is provided on the lock seat, the lock core is slidably arranged in the lock slot, and the blocking rod is locked or unlocked by the contact or discontinuity of the lock core with the second column section.

[0012] Furthermore, the lock seat is provided with a first fixing groove and a second fixing groove, and the first fixing groove and the second fixing groove are both located on the inner wall of the lock groove.

[0013] Furthermore, the lock core is provided with thread teeth and elastic protrusions, and the thread teeth can engage with the thread grooves on the second column section.

[0014] Furthermore, the elastic protrusion can be inserted into the first fixing groove and the second fixing groove.

[0015] Furthermore, the grinding head is a hemispherical protrusion; the barrel is provided with a grinding portion, and the grinding portion is a hemispherical groove; the grinding head and the grinding portion are consistent in shape, and the grinding head and the grinding portion cooperate with each other to grind the medicine.

[0016] Furthermore, the cylinder body is also provided with a medicine feeding hole, and the medicine feeding hole is used for feeding tablets when grinding medicine.

[0017] The technical solution of the utility model can achieve at least one of the following effects:

[0018] (1) The utility model discloses a tube feeding drug grinding syringe, comprising a syringe, a grinding assembly and an occluder, wherein the syringe comprises a barrel and a nipple, the grinding assembly is arranged in the barrel, and the grinding assembly cooperates with the barrel to grind and inject the drug; the occluder is inserted into the grinding assembly and is used to block the nipple when grinding the drug; the occluder comprises a blocking rod, a spring and a fixed lock; when grinding the drug, the blocking rod is unlocked by the fixed lock, and the blocking rod extends out of the grinding assembly under the elastic thrust of the spring and is pressed against the nipple to block the nipple, thereby preventing drug powder from entering the nipple and causing blockage, and also preventing drug powder from being scattered from the nipple to the outside, causing drug waste and inaccurate dosage.

[0019] (2) The utility model also provides a grinding portion on the cylinder body, wherein the grinding portion is a hemispherical groove; the grinding assembly includes a grinding head, wherein the grinding head is a hemispherical protrusion, and the shape of the grinding head is consistent with that of the grinding portion, and the grinding head and the grinding portion cooperate with each other to grind the medicine; the friction area can be increased by the grinding portion with the hemispherical groove and the grinding head with the hemispherical protrusion, thereby improving the efficiency of grinding the medicine.

[0020] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0022] Figure 1 This is a schematic structural diagram of a medicine grinding syringe according to an embodiment of the utility model;

[0023] Figure 2 A cross-sectional view of a medicine grinding syringe according to an embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the cylinder of an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the grinding assembly of an embodiment of the utility model;

[0026] Figure 5 This is a schematic structural diagram of a blocking rod according to an embodiment of the utility model;

[0027] Figure 6This is a schematic diagram of the structure of a fixed lock according to an embodiment of the utility model;

[0028] Figure 7 A cross-sectional view of a lock seat according to an embodiment of the utility model;

[0029] Figure 8 It is a structural schematic diagram of the lock core of an embodiment of the utility model.

[0030] Reference numerals:

[0031] 1- Syringe;

[0032] 11- cylinder body; 111- grinding part; 112- dosing hole; 12- nipple;

[0033] 2- Grinding assembly;

[0034] 21-piston rod; 22-piston; 23-grinding head; 24-through hole; 241-first hole section; 242-second hole section; 243-third hole section; 25-handle;

[0035] 3-occluder;

[0036] 31-blocking rod; 311-first column section; 312-second column section; 313-knob; 32-spring; 33-fixed lock; 331-lock seat; 3311-lock groove; 3312-first fixed groove; 3313-second fixed groove; 332-lock core; 3321-threaded tooth; 3322-elastic protrusion. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0038] Example 1

[0039] A specific embodiment of the utility model discloses a tube feeding medicine grinding syringe, such as Figure 1 and Figure 2As shown, it includes a syringe 1, a grinding component 2 and an occluder 3, the syringe 1 includes a barrel 11 and a nipple 12, the nipple 12 is fixedly connected to one end of the barrel 11, and the nipple 12 is communicated with the inner cavity of the barrel 11, and the nipple 12 is used to connect to an enteral nutrition supply pipeline such as a gastric tube; the grinding component 2 is arranged in the barrel 11, and the grinding component 2 and the barrel 11 are used to grind and inject drugs; the occluder 3 is penetrated on the grinding component 2, and is used to block the nipple 12 when grinding the drug; compared with the prior art, this embodiment blocks the nipple 12 when grinding the drug by arranging the occluder 3, so as to prevent the drug powder from entering the nipple 12 and causing blockage, and at the same time, it can also prevent the drug powder from being scattered from the nipple 12 to the outside, causing drug waste and inaccurate dosage.

[0040] Preferably, if Figure 3 As shown, the barrel 11 is provided with a grinding portion 111, which is located at one end where the barrel 11 is connected to the nipple 12, and the grinding portion 111 is a hemispherical groove; the barrel 11 is also provided with a drug injection hole 112, which is used to inject tablets when grinding drugs.

[0041] Preferably, if Figure 4 As shown, the grinding assembly 2 includes a piston rod 21, a piston 22 and a grinding head 23, and the piston rod 21, the piston 22 and the grinding head 23 are fixedly connected in sequence; the grinding head 23 is a hemispherical protrusion, and the shape of the grinding head 23 is consistent with that of the grinding part 111, and the grinding head 23 and the grinding part 111 cooperate with each other to grind the medicine.

[0042] Preferably, the grinding assembly 2 further comprises a through hole 24 , wherein the through hole 24 sequentially penetrates the piston rod 21 , the piston 22 and the grinding head 23 , and the through hole 24 is used for installing the occluder 3 .

[0043] Preferably, the through hole 24 includes a first hole segment 241, a second hole segment 242 and a third hole segment 243, the first hole segment 241, the second hole segment 242 and the third hole segment 243 are connected in sequence, and the inner diameter of the first hole segment 241 is larger than the inner diameter of the second hole segment 242, and the inner diameter of the second hole segment 242 is larger than the inner diameter of the third hole segment 243.

[0044] Preferably, the grinding assembly 2 also includes a handle 25, which is fixedly connected to an end of the piston rod 21 away from the piston 22. The handle 25 can conveniently apply force to the grinding head 23 when grinding the medicine, and apply force to the piston 22 when injecting the medicine.

[0045] Preferably, the occluder 3 comprises an occluding rod 31, a spring 32 and a fixing lock 33. The occluding rod 31 is inserted into the through hole 24 and can slide and rotate in the through hole 24. The spring 32 is sleeved on the occluding rod 31 and can rotate on the occluding rod 31. The spring 32 is used to always apply an elastic thrust to the occluding rod 31. The fixing lock 33 is fixedly mounted on the piston rod 21 and is used to lock or unlock the occluding rod 31. When the drug is ground, the locking of the occluding rod 31 is released by the fixing lock 33, and the occluding rod 31 is unlocked. Under the elastic thrust of the spring 32, the blocking rod 31 extends out from the through hole 24 and presses against the nipple 12 to block the nipple 12, thereby preventing medicine powder from entering the nipple 12 and causing blockage. At the same time, it can also prevent medicine powder from being scattered from the nipple 12 to the outside, causing medicine waste and inaccurate dosage. When injecting the medicine, the blocking rod 31 is retracted into the through hole 24 and locked by the fixing lock 33, so that the blocking rod 31 is fixed in the through hole 24, ensuring that the inner cavity of the nipple 12 and the barrel 11 are connected, which is convenient for extracting the solution and injecting the medicine.

[0046] Preferably, if Figure 5 As shown, the blocking rod 31 includes a first column segment 311 and a second column segment 312, the first column segment 311 and the second column segment 312 are fixedly connected, and the first column segment 311 is inserted into the first hole segment 241, and the second column segment 312 is inserted into the second hole segment 242 and the third hole segment 243; a sealing gasket is provided between the first column segment 311 and the first hole segment 241, which can prevent drug powder from entering the first hole segment 241 and avoid drug loss.

[0047] Preferably, the spring 32 is sleeved on the second column segment 312, one end of the spring 32 is rotatably connected to the first column segment 311, and the other end is rotatably connected to the third hole segment 243; the elastic thrust applied by the spring 32 to the blocking rod 31 is smaller than the friction between the piston 22 and the cylinder 11, thereby ensuring that when grinding the drug, the grinding head 23 maintains its position in the cylinder 11 without applying other external forces, preventing the grinding head 23 from moving freely in the cylinder 11 along the axis of the cylinder 11.

[0048] Preferably, a thread groove is provided on the second column section 312 .

[0049] Preferably, the diameter of the first column segment 311 is larger than the inner diameter of the nipple 12; a plugging head is provided at one end of the first column segment 311 away from the second column segment 312, and the plugging head is an arc-shaped spherical surface, which can better contact with the grinding part 111 to prevent the powder from entering the nipple 12 and causing the nipple 12 to be blocked.

[0050] Preferably, the blocking rod 31 further includes a knob 313 , and the knob 313 is fixedly connected to the second column section 312 .

[0051] Preferably, if Figure 6 and Figure 7 As shown, the fixed lock 33 includes a lock seat 331 and a lock core 332. The lock seat 331 is fixedly installed on the piston rod 21, and the second column section 312 passes through the lock seat 331; a lock groove 3311 is provided on the lock seat 331, and the lock core 332 is slidably set in the lock groove 3311. The locking or unlocking of the blocking rod 31 is achieved by the contact or disengagement of the lock core 332 with the second column section 312.

[0052] Preferably, the lock seat 331 is further provided with a first fixing groove 3312 and a second fixing groove 3313 , and the first fixing groove 3312 and the second fixing groove 3313 are both located on the inner wall of the lock groove 3311 .

[0053] Preferably, if Figure 8 As shown, the lock core 332 is provided with a thread tooth 3321 and an elastic protrusion 3322, and the thread tooth 3321 can engage with the thread groove on the second column section 312; the elastic protrusion 3322 can be inserted into the first fixing groove 3312 and the second fixing groove 3313. When the elastic protrusion 3322 is inserted into the first fixing groove 3312, it indicates that the thread tooth 3321 has engaged with the thread groove on the second column section 312, thereby locking the blocking rod 31; when the elastic protrusion 3322 is inserted into the second fixing groove 3313, it indicates that the thread tooth 3321 has disengaged from the thread groove on the second column section 312, thereby releasing the lock on the blocking rod 31.

[0054] When using:

[0055] When grinding the medicine, the grinding assembly 2 is pulled out to make the piston 22 and the grinding head 23 retreat to the medicine injection hole 112, and the medicine is injected into the cylinder 11 through the medicine injection hole 112; the lock core 332 is pushed to make the elastic protrusion 3322 insert into the second fixing groove 3313, at this time, the threaded teeth 3321 are disengaged from the threaded groove on the second column section 312, and the locking of the blocking rod 31 is released. Under the elastic thrust of the spring 32, the blocking head of the blocking rod 31 extends out from the first hole section 241 and presses against the nipple 12 to block the nipple 12; the piston rod 21 is pushed and rotated to make the grinding head 23 cooperate with the grinding part 111 to grind the corresponding medicine;

[0056] When injecting the drug, push the lock core 332 to insert the elastic protrusion 3322 into the first fixed groove 3312. At this time, the threaded tooth 3321 engages with the threaded groove on the second column section 312, and the knob 313 is turned to drive the blocking rod 31 to rotate, so that the blocking head is retracted into the first hole section 241. The cooperation between the threaded tooth 3321 and the threaded groove keeps the blocking rod 31 in a fixed position. Pull out the grinding assembly 2, extract the solution to dissolve the powder, and then connect the nipple 12 to an enteral nutrition supply line such as a gastric tube to inject the drug.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A tube feeding drug grinding syringe, characterized in that: The invention comprises a syringe (1), a grinding assembly (2) and an occluder (3), wherein the syringe (1) comprises a barrel (11) and a nipple (12), the grinding assembly (2) is arranged in the barrel (11), and the grinding assembly (2) cooperates with the barrel (11) to grind and inject drugs; the occluder (3) is passed through the grinding assembly (2) and is used to block the nipple (12) when grinding drugs; The occluder (3) comprises an occluding rod (31), a spring (32) and a fixing lock (33); the spring (32) is sleeved on the occluding rod (31) and can rotate on the occluding rod (31), and the spring (32) is used to apply an elastic thrust to the occluding rod (31); the occluding rod (31) is inserted into the grinding assembly (2), and can slide and rotate in the grinding assembly (2), and can extend or retract into the grinding assembly (2); the fixing lock (33) is fixedly installed on the grinding assembly (2) and is used to The rod (31) is locked or unlocked; when grinding medicine, the blocking rod (31) is unlocked by the fixed lock (33), and the blocking rod (31) extends out of the grinding assembly (2) under the elastic thrust of the spring (32) and is pressed against the nipple (12) to block the nipple (12); when injecting medicine, the blocking rod (31) is retracted into the grinding assembly (2) to release the blockage of the nipple (12), and the blocking rod (31) is locked by the fixed lock (33), so that the nipple (12) and the inner cavity of the barrel (11) are connected.

2. A tube feeding medicine grinding syringe according to claim 1, characterized in that: The blocking rod (31) comprises a first column section (311) and a second column section (312); the diameter of the first column section (311) is larger than the inner diameter of the nipple (12); the first column section (311) is provided with a blocking head with an arc-shaped spherical surface; and the second column section (312) is provided with a threaded groove.

3. A tube feeding medicine grinding syringe according to claim 2, characterized in that: The grinding assembly (2) comprises a piston rod (21), a piston (22) and a grinding head (23) which are fixedly connected in sequence; the grinding assembly (2) also comprises a through hole (24), wherein the through hole (24) passes through the piston rod (21), the piston (22) and the grinding head (23).

4. A tube feeding medicine grinding syringe according to claim 3, characterized in that: The through hole (24) comprises a first hole section (241) and a second hole section (242); the first column section (311) is inserted into the first hole section (241), and the second column section (312) is inserted into the second hole section (242).

5. A tube feeding medicine grinding syringe according to claim 4, characterized in that: The fixed lock (33) comprises a lock seat (331) and a lock core (332); the lock seat (331) is fixedly mounted on the piston rod (21); a lock slot (3311) is provided on the lock seat (331), and the lock core (332) is slidably disposed in the lock slot (3311); the blocking rod (31) is locked or unlocked by the lock core (332) coming into contact with or out of contact with the second column section (312).

6. A tube feeding medicine grinding syringe according to claim 5, characterized in that: The lock seat (331) is also provided with a first fixing groove (3312) and a second fixing groove (3313), and the first fixing groove (3312) and the second fixing groove (3313) are both located on the inner wall of the lock groove (3311).

7. A tube feeding medicine grinding syringe according to claim 6, characterized in that: The lock core (332) is provided with thread teeth (3321) and elastic protrusions (3322), and the thread teeth (3321) can be engaged with the thread groove on the second column section (312).

8. A tube feeding medicine grinding syringe according to claim 7, characterized in that: The elastic protrusion (3322) can be inserted into the first fixing groove (3312) and the second fixing groove (3313).

9. A tube feeding medicine grinding syringe according to claim 8, characterized in that: The grinding head (23) is a hemispherical protrusion; the barrel (11) is provided with a grinding portion (111), and the grinding portion (111) is a hemispherical groove; the grinding head (23) and the grinding portion (111) are consistent in shape, and the grinding head (23) and the grinding portion (111) cooperate with each other to grind medicine.

10. A tube feeding medicine grinding syringe according to claim 9, characterized in that: The cylinder (11) is also provided with a medicine feeding hole (112), and the medicine feeding hole (112) is used for feeding tablets when grinding medicine.

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