Medical convenient enema device

By combining a large piston and a small piston, the problem of drug residue is solved, achieving complete utilization of the drug and reducing costs, while simplifying operation.

CN224523704UActive Publication Date: 2026-07-21THE FIRST AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE FIRST AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV
Filing Date
2025-04-02
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing enema devices often leave medication residue during use, leading to waste and increasing treatment costs for patients.

Method used

It adopts a combination structure of large and small pistons. The large piston pusher pushes the drug into the intestine, and the inflatable balloon and corrugated tube push the small piston to further squeeze out the residual drug. Combined with the sealing membrane, it prevents drug residue.

Benefits of technology

It achieves full utilization of the medication, avoids waste, reduces treatment costs, and is simple to operate and easy to carry.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of medical portable enemator, specifically related to enemator technical field, including the medicine pipe for containing medicament, the enemator pipe of inserting into anus is fixedly connected in one side of the medicine pipe, the inside of the medicine pipe is equipped with big piston, big piston push rod for pushing big piston to move in the inside of medicine pipe is fixed in one side of big piston, and medicament in medicine pipe is extruded into patient intestine by enemator pipe through the movement of big piston;Small piston is inlaid in the inside of big piston, small piston pusher assembly for pushing small piston to move in the inside of enemator pipe is equipped in the inside of big piston push rod, and residual medicament in enemator pipe is extruded into patient intestine by the movement of small piston.The utility model can extrude all medicaments into patient body by the setting of big piston and small piston, solve the problem of traditional enemator inside medicament residue, waste, be conducive to reducing the treatment cost of patient, reduce the economic burden of patient.
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Description

Technical Field

[0001] This utility model relates to the field of enema device technology, and more specifically to a portable medical enema device. Background Technology

[0002] An enema device is a medical or home-use device used to inject liquid (such as water, saline, or a drug solution) into the rectum, primarily for bowel cleansing, relieving constipation, preoperative preparation, or local drug administration. For example, the common mesalazine enema can be used to treat distal ulcerative colitis (proctitis, left-sided colitis).

[0003] Depending on the usage scenario and design, enema devices can be divided into manual and electric types. Clinically, most commonly used enema devices are manual, where medication is squeezed into the intestines by hand, as shown in prior art publication CN2443727Y. These devices use a corrugated outer wall to directly squeeze the medication into the intestines; however, medication can easily remain in the folds of this outer wall, resulting in waste. Although enema devices with smooth outer walls, such as those in prior art publications CN221655381U and CN211327324U, are also used clinically, these only prevent medication residue on the smooth inner wall; medication can still easily remain in the flexible tube that extends into the intestines, also leading to waste. Furthermore, these medications are relatively expensive, and wasted medication increases the patient's treatment costs and financial burden. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a portable medical enema device. By setting up a large piston and a small piston, all the medicine can be squeezed into the patient's body, which solves the problem of medicine residue and waste in traditional enema devices. It helps to reduce the treatment cost and economic burden of patients, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable medical enema device, comprising a drug-filling tube for holding medicine, an enema tube inserted into the anus fixedly connected to one side of the drug-filling tube, a large piston inside the drug-filling tube, and a large piston push rod fixed to one side of the large piston for pushing the large piston to move inside the drug-filling tube, thereby squeezing the medicine in the drug-filling tube into the patient's intestine through the enema tube by the movement of the large piston;

[0006] The large piston has a small piston embedded inside, and the large piston push rod has a small piston pushing assembly inside to push the small piston to move inside the enema tube. The movement of the small piston squeezes the residual medicine in the enema tube into the patient's intestine.

[0007] In a preferred embodiment, the small piston actuation assembly includes a bellows, one end of which is fixed to the small piston, and the other end of which is fixed to a hose, one end of which is connected to an inflatable balloon for inflating the bellows.

[0008] In a preferred embodiment, a sealing membrane is fixed to one side of the interior of the large piston, and the sealing membrane is located on the side of the small piston to seal the small piston inside the large piston.

[0009] In a preferred embodiment, the large piston push rod includes a piston rod, one end of which is fixed to the side wall of the large piston, and the other end of which extends out from one side of the loading tube;

[0010] The piston rod is internally machined to be hollow, and the corrugated tube and hose are both located inside the piston rod. The inflatable balloon is located at the end of the piston rod away from the large piston, and the inflatable balloon is fixed to the piston rod.

[0011] In a preferred embodiment, a threaded ring is fixed to the side of the drug delivery tube away from the enema tube. The threaded ring is sleeved on the outside of the piston rod. The outer wall of the piston rod near the large piston is machined with external threads. The piston rod and the threaded ring are threaded together to fix the large piston on the inner wall of the drug delivery tube away from the enema tube. The outer wall of the piston rod is divided into a threaded section and a smooth section. The length of the threaded section is the same as the width of the threaded ring. The threaded section can fix the position of the large piston to prevent people from accidentally pushing the piston rod and squeezing out the medicine, thus wasting the medicine.

[0012] In a preferred embodiment, the outer end of the enema tube is covered with a protective sleeve. The protective sleeve helps to isolate the enema tube from the external environment and ensures the cleanliness and hygiene of the enema tube.

[0013] In a preferred embodiment, the sealing membrane is an antibacterial membrane. Medical antibacterial membrane is a thin film made by adding antibacterial agents to the material or using antibacterial technology. It can effectively inhibit or kill pathogenic microorganisms such as bacteria and fungi, prevent the growth of bacteria and other microorganisms, and help prevent the deterioration of the medicine inside the drug loading tube.

[0014] In a preferred embodiment, the inner diameter of the enema tube is equal to the outer diameter of the small piston, and the central axis of the enema tube is collinear with the central axis of the small piston.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. By using a large piston pusher to push the large piston to squeeze out the medicine inside the medicine tube, it is possible to avoid the medicine residue inside the medicine tube. Then, by squeezing the inflatable balloon, the extended corrugated tube pushes the small piston to move inside the enema tube, thereby pushing the medicine remaining inside the enema tube into the patient's body, thus avoiding the medicine residue in the enema tube. Using this utility model can make full use of all the medicine and will not cause any waste.

[0017] 2. By using air to extend the length of the corrugated tube, the overall length of the enema device can be reduced, saving packaging costs, making it easier to carry, and enhancing the practicality of the enema device.

[0018] 3. This utility model can complete the enema operation by pushing the piston rod and squeezing the inflatable balloon. The operation is simple and can be easily performed by the patient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the sheath and enema tube of this utility model;

[0021] Figure 3 This is a cross-sectional view of the enema tube and the drug loading tube of this utility model;

[0022] Figure 4 This is a schematic diagram of the large piston of this utility model after it moves in the charging tube;

[0023] Figure 5 This is a schematic diagram of the structure of the large piston and the small piston of this utility model;

[0024] Figure 6 This is a schematic diagram of the small piston of this utility model after it has moved into the enema tube.

[0025] The attached figures are labeled as follows:

[0026] 1. Drug loading tube; 2. Enema tube; 3. Sheath; 4. Large piston; 5. Small piston; 6. Large piston push rod; 7. Small piston push assembly;

[0027] 61. Piston rod; 62. Threaded ring;

[0028] 71. Corrugated pipe; 72. Flexible hose; 73. Inflatable balloon; 74. Sealing membrane. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Refer to the instruction manual appendix Figure 1-3 This utility model provides a portable medical enema device, including a medicine tube 1 for holding medicine, and an enema tube 2 for inserting into the anus fixedly connected to one side of the medicine tube 1. The enema tube 2 is soft and deformable, which can reduce the stimulation to the patient when inserted. A protective sleeve 3 is fitted on the outer end of the enema tube 2. The protective sleeve 3 can isolate the external environment from the enema tube 2, which helps to ensure the cleanliness and hygiene of the enema tube 2. The protective sleeve 3 can be unscrewed from the outer end of the enema tube 2 before use.

[0031] A large piston 4 is also provided inside the loading tube 1. A large piston push rod 6 is fixed on one side of the large piston 4 to push the large piston 4 to move inside the loading tube 1, specifically as follows: Figure 4-6 As shown: The large piston pusher 6 includes a piston rod 61. One end of the piston rod 61 is fixed to the side wall of the large piston 4, and the other end of the piston rod 61 extends from the inside of the drug-filling tube 1. After removing the sheath 3 from the outside of the enema tube 2, the medical staff or the patient holds the drug-filling tube 1 by hand, then inserts the enema tube 2 into the intestine through the anus, and then pushes the piston rod 61 by hand, so that the piston rod 61 can push the large piston 4 to move inside the drug-filling tube 1, thereby squeezing the medicine in the drug-filling tube 1 into the patient's intestine through the enema tube 2 to achieve intestinal drug administration. Moreover, the outer wall of the large piston 4 is in contact with the inside of the drug-filling tube 1, and the large piston 4 can also scrape off the medicine adhering to the inner wall of the drug-filling tube 1 during the movement, so as to avoid the presence of medicine residue in the drug-filling tube 1 and prevent waste.

[0032] In this embodiment, a threaded ring 62 is fixed on the side of the drug delivery tube 1 away from the enema tube 2. The threaded ring 62 is sleeved on the outside of the piston rod 61. The outer wall of the piston rod 61 near the large piston 4 is machined with external threads. In addition to the section with external threads, the outer wall of the piston rod 61 also has a smooth section without threads. The threaded section is designed to allow the piston rod 61 to be threadedly connected to the threaded ring 62, so as to fix the large piston 4 on the inner wall of the drug delivery tube 1 away from the enema tube 2. This prevents people from accidentally pushing the piston rod 61 and squeezing out the medicine due to tension before the enema tube 2 is inserted into the intestine, thus avoiding waste.

[0033] After the medication in enema tube 1 is completely squeezed out, some medication remains on the inner wall of enema tube 2. To ensure this remaining medication is also injected into the patient, such as... Figure 5As shown, a small piston 5 is embedded inside the large piston 4. The large piston push rod 6 contains a small piston pushing assembly 7 that pushes the small piston 5 to move inside the enema tube 2. The position of the small piston pushing assembly 7 is as follows: Figure 1-3 As shown;

[0034] The specific structure of the small piston actuation component 7 is as follows: Figure 4-6 As shown: The small piston pushing assembly 7 includes a bellows 71, one end of which is fixed to the small piston 5, and the other end of which is fixed to a hose 72. One end of the hose 72 is connected to an inflatable balloon 73 for inflating the bellows 71. The inflatable balloon 73 is located at the end of the piston rod 61 away from the large piston 4. The inflatable balloon 73 is fixed to the piston rod 61, and the piston rod 61 is hollow inside. Both the bellows 71 and the hose 72 are located inside the piston rod 61. By placing the bellows 71 and the hose 72 inside the piston rod 61, it is beneficial to reduce the overall length of the enema device.

[0035] After feeling that the piston rod 61 can no longer be pushed, medical staff or the patient can repeatedly squeeze the inflatable balloon 73 by hand. By squeezing the inflatable balloon 73, air is injected into the corrugated tube 71, allowing the corrugated tube 71 to extend under the filling of gas, so as to push the small piston 5 out of the large piston 4. Since the inner diameter of the enema tube 2 is equal to the outer diameter of the small piston 5, and the central axis of the enema tube 2 is collinear with the central axis of the small piston 5, the small piston 5, which has been moved out of the large piston 4, can move directly into the enema tube 2. Continuing to squeeze the inflatable balloon 73 can also make the small piston 5 move inside the enema tube 2. During the movement of the small piston 5 inside the enema tube 2, all the medicine remaining inside the enema tube 2 can be pushed into the patient's body.

[0036] During this process, the operator can stop squeezing the inflatable sac 73 after feeling a sudden decrease in resistance when squeezing it. This indicates that at this point, one end of the small piston 5 is no longer subject to resistance from the medication, but rather the resistance from the operator squeezing the inflatable sac 73 has decreased. In other words, the small piston 5 has pushed out all the medication from the enema tube 2, leaving no medication residue on the inner wall of the enema tube 2, thus further preventing waste.

[0037] In addition, to prevent the small piston 5 from dislodging from the large piston 4, such as Figure 4 and 5As shown, a sealing membrane 74 is fixed inside the large piston 4 on one side. The sealing membrane 74 is located on the side of the small piston 5. The sealing membrane 74 can seal the small piston 5 inside the large piston 4. Only when air is injected into the bellows 71 will the sealing membrane 74 be ruptured by the small piston 5, allowing the small piston 5 to pass through the sealing membrane 74 and move into the enema tube 2. Moreover, the sealing membrane 74 is an antibacterial membrane, which can also isolate the small piston 5 and the medicine inside the drug delivery tube 1 when not in use, to prevent the growth of microorganisms such as pathogens and bacteria, and to help prevent the medicine in the drug delivery tube 1 from deteriorating.

[0038] This invention, through the arrangement of a large piston 4 and a small piston 5, ensures that all medication is expelled into the patient's body, solving the problems of medication residue and waste in traditional enemas. This helps reduce treatment costs and alleviate the economic burden on patients.

[0039] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable medical enema device, characterized in that: It includes a drug-filling tube (1) for holding medicine, and an enema tube (2) inserted into the anus is fixedly connected to one side of the drug-filling tube (1). A large piston (4) is provided inside the drug-filling tube (1), and a large piston push rod (6) is fixed to one side of the large piston (4) for pushing the large piston (4) to move inside the drug-filling tube (1). The medicine in the drug-filling tube (1) is squeezed into the patient's intestine through the enema tube (2) by the movement of the large piston (4). The large piston (4) is fitted with a small piston (5), and the large piston push rod (6) is provided with a small piston pushing assembly (7) to push the small piston (5) to move inside the enema tube (2). The movement of the small piston (5) squeezes the residual medicine in the enema tube (2) into the patient's intestine.

2. The portable medical enema device according to claim 1, characterized in that: The small piston pushing assembly (7) includes a bellows (71), one end of which is fixed to the small piston (5), and the other end of which is fixed to a hose (72). One end of the hose (72) is connected to an inflatable balloon (73) for inflating the bellows (71).

3. A portable medical enema device according to claim 2, characterized in that: A sealing membrane (74) is fixed on one side inside the large piston (4). The sealing membrane (74) is located on one side of the small piston (5) and is used to seal the small piston (5) inside the large piston (4).

4. A portable medical enema device according to claim 2, characterized in that: The large piston push rod (6) includes a piston rod (61), one end of which is fixed to the side wall of the large piston (4), and the other end of which extends out from one side of the loading tube (1); The piston rod (61) is hollow inside. The corrugated tube (71) and the hose (72) are both located inside the piston rod (61). The inflatable balloon (73) is located at the end of the piston rod (61) away from the large piston (4). The inflatable balloon (73) is fixed to the piston rod (61).

5. A portable medical enema device according to claim 4, characterized in that: A threaded ring (62) is fixed on the side of the drug-filling tube (1) away from the enema tube (2). The threaded ring (62) is sleeved on the outside of the piston rod (61). The piston rod (61) has an external thread on the outer wall of the end near the large piston (4). The piston rod (61) and the threaded ring (62) are threaded together to fix the large piston (4) on the inner wall of the drug-filling tube (1) away from the enema tube (2).

6. A portable medical enema device according to claim 1, characterized in that: The enema tube (2) has a sheath (3) on its outer end.

7. A portable medical enema device according to claim 3, characterized in that: The sealing membrane (74) is an antibacterial membrane.

8. A portable medical enema device according to claim 3, characterized in that: The inner diameter of the enema tube (2) is equal to the outer diameter of the small piston (5), and the central axis of the enema tube (2) is collinear with the central axis of the small piston (5).