Drainage hemostasis slow-release analgesia device for anorectal department

Abstract

The invention discloses a drainage hemostasis slow-release analgesia device for the anorectal department in the technical field of medical instruments, and the drainage hemostasis slow-release analgesia device comprises a negative pressure machine and a liquid storage tank, and the negative pressure machine is communicated with a drainage tube; the inlet end of the drainage tube is annularly sleeved with a stable air bag, and a slow-release layer is arranged on the surface of the stable air bag. The bottom of the liquid storage tank communicates with a liquid conveying pipeline. A balance assembly is installed at the joint of the liquid conveying pipeline and the liquid storage tank. The balance assembly comprises a fixing base integrally formed with the liquid storage tank, a balance cavity communicated with the liquid conveying pipeline is formed in the fixing base, an adjusting block is arranged in the balance cavity in a sliding fit mode, a plurality of reset springs are fixedly connected between the top end of the adjusting block and the top wall of the balance cavity, and the balance cavity is divided into a pressure cavity and a throttling cavity through the adjusting block from top to bottom. According to the analgesia device, the stable air bag is extruded during anorectal movement, so that the liquid medicine output speed of the infusion pipeline is increased, the situation that liquid medicine in the slow release layer is rapidly lost due to extrusion is reduced, and continuous and stable analgesia can be guaranteed for a patient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a drainage, hemostasis and sustained-release analgesia device for anorectal surgery. Background Art

[0002] Managing postoperative pain and bleeding in anorectal surgery is a key clinical challenge. Due to the dense nerves and sensitive tissues in the perianal area, traditional analgesics such as oral or injectable medications are prone to systemic side effects, and persistent bleeding from the wound surface can lead to complications such as infection and stenosis.

[0003] After searching, the publication number CN118750084B discloses a drainage, hemostasis and sustained-release analgesia device for anorectal surgery, which includes a negative pressure drainage pipe, an infusion pipe and a liquid storage tank. The liquid storage tank is penetrated by a liquid pressure mechanism, and a floating plate is slidably connected to the liquid storage tank. The liquid pressure mechanism penetrates the floating plate and extends into the pre-storage cylinder. The floating plate is provided with a second through hole. The drainage, hemostasis and sustained-release analgesia device for anorectal surgery has a negative pressure drainage pipe made of medical polymer material. After the injection of local anesthetic, it becomes as soft as a sponge, which plays a compressive and supporting role around the anus, and provides infiltration and long-acting sustained-release analgesia to the anus. In the event of intestinal bleeding, patients can detect, report and treat it early to avoid medical accidents. The dentate line is thinner, forming a dumbbell shape, which flexibly compresses the anal canal to stop bleeding and isolate feces and water. The exhaust drainage pipe can play a role in observing internal bleeding, exhaust drainage, preventing abdominal distension and preventing anal stenosis.

[0004] The existing device still has some shortcomings in actual use: when the intestines are peristaltic, it will squeeze the drainage tube placed in the patient's body, thereby squeezing the adsorption layer used to adsorb local anesthetics or sustained-release drugs, causing the liquid in it to be squeezed out and sucked away by the negative pressure of the drainage tube. Replenishment requires manual replenishment, and the drainage tube is difficult to observe inside the patient's body. When the sustained-release liquid in the adsorption layer is insufficient, the intestinal peristalsis squeezes the drainage tube, which will further increase the patient's pain. At the same time, it is also difficult to handle some objects stuck at the inlet end of the drainage tube.

[0005] Therefore, the present invention proposes a drainage, hemostasis and sustained-release analgesia device for anorectal surgery to solve the above problems. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a drainage, hemostatic and sustained-release analgesic device for anorectal department. By squeezing the stabilizing air bag during anorectal movement, the infusion pipeline increases the output rate of the drug solution, so as to reduce the rapid loss of the internal drug solution of the sustained-release layer due to squeezing, thereby ensuring continuous and stable analgesia for patients.

[0007] To achieve the above-mentioned object, the technical solution of the present invention is as follows: a drainage hemostasis and sustained-release analgesia device for anorectal department, comprising a negative pressure machine and a liquid storage tank, wherein the negative pressure machine is connected to a drainage tube; a stabilizing air bag is sleeved at the inlet end of the drainage tube, and a sustained-release layer is provided on the surface of the stabilizing air bag;

[0008] The bottom of the liquid storage tank is connected to a liquid infusion pipeline, and a balancing component for adjusting the cross-sectional area of the liquid infusion pipeline is installed at the connection between the liquid infusion pipeline and the liquid storage tank;

[0009] The balancing assembly includes a fixed base integrally formed with the liquid storage tank. The fixed base is provided with a balancing chamber connected to the infusion pipeline. An adjustment block is slidably fitted inside the balancing chamber. A plurality of return springs are fixedly connected between the top of the adjustment block and the top wall of the balancing chamber. The adjustment block divides the balancing chamber from top to bottom into a pressure chamber and a throttling chamber. When the return spring is in the initial position, the adjustment block is located directly above the infusion pipeline.

[0010] A sustained-release component for reducing the release rate of the drug solution and connected to the sustained-release layer is opened in the side wall of the stabilizing airbag. One end of the infusion pipeline is connected to the sustained-release component, and the other end of the infusion pipeline is connected to the pressure chamber and the top of the liquid storage tank; it also includes a pump component, which is connected to the trachea, and the stabilizing airbag is connected to the trachea.

[0011] Principle of the basic solution: When the stabilizing airbag placed in the patient's anus and rectum is squeezed and deformed by anorectal movement, gas is delivered to the air delivery channel. These gases are delivered to the pressure chamber and the top of the liquid storage tank along the air delivery channel, respectively, to increase the air pressure above the surface of the sustained-release liquid or local anesthetic inside the liquid storage tank, and squeeze the sustained-release liquid or local anesthetic into the sustained-release component through the infusion pipe, and then the sustained-release component slowly and evenly releases it onto the sustained-release layer to provide local anesthesia and analgesia to the patient. At the same time, when the air pressure in the pressure chamber rises, it will push the fixed seat downward, reducing the cross-sectional area of the infusion pipe at that location, thereby increasing the flow rate to the sustained-release component, so that the degree of squeezing of the stabilizing airbag by the patient's anus and rectum and the replenishment of the liquid in the sustained-release layer can be adaptively coordinated.

[0012] The adoption of the above scheme has the following beneficial effects: Compared with the existing technology, this scheme, first of all, realizes the dynamic regulation of the flow rate of the drug solution by converting the mechanical deformation of the stabilizing airbag into a gas power source. When the anorectal movement squeezes the stabilizing airbag, the gas synchronously pressurizes the top space of the liquid storage tank and the pressure chamber through the gas transmission channel, which not only increases the drug delivery pressure, but also forms a dual drive mechanism through the linkage adjustment of the balance component. Under the action of air pressure, the regulating block stretches the reset spring downward, which reduces the cross-sectional area of the infusion pipeline to form a throttling effect, thereby increasing the output volume of the drug solution per unit time and accurately matching the dynamic needs of human physiological activities. Secondly, the adaptive system effectively solves the problem of sudden loss of drug solution caused by tissue extrusion in traditional devices. Through the pressure compensation mechanism, the drug solution replenishment rate and the loss rate of the sustained-release layer are dynamically balanced, and the fluctuation of drug solution concentration is controlled within a lower range, which significantly prolongs the duration of analgesia.

[0013] Furthermore, the slow-release component includes a slow-release cavity opened on the inner wall of the stable airbag and communicated with the infusion pipeline, and a plurality of slow-release holes opened on the surface of the stable airbag and communicated with the slow-release cavity.

[0014] Beneficial effects: The sustained-release cavity serves as a transitional buffer space, which can temporarily store pressurized liquid medicine. The sustained-release holes evenly distributed on the surface form a multi-level release path, which not only prevents the high-pressure liquid medicine from directly impacting the wound, but also enables the liquid medicine to continue to penetrate evenly when the tissue moves and squeezes, thereby maintaining the dynamic balance of drug concentration in the wound.

[0015] Furthermore, a first one-way valve is provided inside the infusion pipeline to allow the liquid to flow toward the stabilizing airbag.

[0016] Beneficial effects: The first one-way valve forms a directional flow barrier, effectively preventing the reverse pressure generated by anorectal movement from causing the drug solution to flow back, ensuring that the pressure gradient of the drug delivery system always points to the direction of the sustained-release layer, and avoiding the risk of drug delivery interruption or dosage loss of control due to pressure fluctuations.

[0017] Furthermore, a plurality of auxiliary channels communicating with the interior of the stabilizing airbag are opened inside the drainage tube near its inlet end.

[0018] Beneficial effects: When the stabilizing airbag is squeezed, part of the gas forms a directional airflow through the auxiliary channel, actively clearing the blood scab or secretion adhering to the entrance of the drainage tube, avoiding poor drainage caused by foreign matter accumulation, and at the same time using the micro-vibration generated by the gas flow to further peel off the attachments on the tube wall, thereby improving the self-cleaning ability of the drainage system.

[0019] Furthermore, the auxiliary channel has a serpentine structure at one end close to the drainage tube inlet.

[0020] Beneficial effects: The serpentine structure enhances the peeling strength of foreign matter by extending the airflow path and forming local turbulence. At the same time, it uses the bending structure to physically block the backflow of large particles, which not only improves the self-cleaning efficiency of the drainage tube, but also reduces the risk of blockage in the auxiliary channel.

[0021] Furthermore, a second one-way valve is provided in each auxiliary channel.

[0022] Beneficial effect: The second one-way valve forces the airflow to flow only along the outlet direction of the drainage tube, which can not only prevent foreign matter from blocking the auxiliary channel with negative pressure reverse osmosis, but also enhance the continuous stripping effect of stubborn attachments at the front end of the drainage tube by maintaining the one-way pulse impact of the gas.

[0023] Furthermore, a third one-way valve is provided inside the trachea.

[0024] Beneficial effect: The third one-way valve constructs a one-way flow path for gas inside the trachea, preventing gas from flowing back into the pump assembly when the stable airbag rebounds, ensuring that effective positive pressure is always maintained during the airbag restoration process, and avoiding pressure fluctuations caused by gas reflux that affect the stability of drug delivery.

[0025] Furthermore, a starting airbag is provided on the top of the liquid storage tank and is communicated with the interior of the liquid storage tank.

[0026] Beneficial effects: The airbag is activated by manual pre-compression to generate initial air pressure, so that the liquid in the reservoir forms a directional pressure gradient at the moment the device is placed, quickly establishing the basic drug concentration of the sustained-release layer, shortening the analgesic onset time, and providing a benchmark reference point for subsequent dynamic pressure regulation.

[0027] Furthermore, a fourth one-way valve is provided at the connection point between the starting airbag and the liquid storage tank.

[0028] Beneficial effect: The fourth one-way valve constructs a one-way pressure transmission path between the starting airbag and the liquid storage tank, which not only ensures that the initial air pressure generated by manual pre-compression is accurately introduced into the liquid storage tank to establish a pressure benchmark, but also prevents the reverse osmosis of the liquid or gas from contaminating the airbag cavity, ensuring the purity and controllability of the initial state of the pressure regulation system.

[0029] Furthermore, the top of the liquid storage tank is threadedly connected to a sealing cover.

[0030] Beneficial effects: The threaded connection structure forms multiple sealing surfaces through mechanical tightening, which ensures the airtightness of the liquid storage tank while providing a rigid connection that can be repeatedly disassembled and assembled, preventing the volatilization or contamination of the liquid medicine and facilitating the rapid completion of tank disinfection and liquid medicine replenishment during clinical operations.

[0031] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is an overall isometric view of an embodiment of the anorectal drainage, hemostasis, and sustained-release analgesia device of the present invention;

[0033] Figure 2 This is an overall side sectional view of an embodiment of the anorectal drainage, hemostasis and sustained-release analgesia device of the present invention;

[0034] Figure 3 This is an enlarged view of part A of an embodiment of the anorectal drainage, hemostasis, and sustained-release analgesia device of the present invention;

[0035] Figure 4 This is an enlarged view of part B of the embodiment of the anorectal drainage hemostasis and sustained-release analgesia device of the present invention.

[0036] Figure 5 This is an enlarged view of part C of an embodiment of the drainage, hemostasis and sustained-release analgesia device for anorectal use of the present invention.

[0037] The figure marks in the drawings of the specification include: 1. liquid storage tank; 2. starting airbag; 3. sealing cover; 4. air delivery channel; 5. fixing seat; 6. drainage tube; 7. sustained-release layer; 8. stabilizing airbag; 9. trachea; 10. infusion pipeline; 11. fourth one-way valve; 12. return spring; 13. adjusting block; 14. second one-way valve; 15. first one-way valve; 16. balancing chamber; 17. third one-way valve; 18. sustained-release chamber; 19. auxiliary channel. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] The following is further described in detail through specific implementation methods:

[0042] Example 1:

[0043] As attached Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The figure shows a drainage, hemostatic, and sustained-release analgesic device for anorectal surgery, comprising a vacuum pump and a fluid reservoir 1. The top of the fluid reservoir 1 is threadedly connected to a sealing cap 3, which ensures the airtightness of the fluid reservoir 1 while providing a rigid connection that can be repeatedly disassembled and assembled. This prevents volatilization or contamination of the liquid medicine and facilitates rapid tank disinfection and fluid replenishment during clinical operations. The vacuum pump is connected to a drainage tube 6, which provides a certain negative pressure to the drainage tube 6 to facilitate rapid drainage. A stabilizing airbag 8 is placed around the inlet end of the drainage tube 6, which is inflated to stabilize the tube within the patient's anorectal region. A sustained-release layer 7 is provided on the surface of the stabilizing airbag 8.

[0044] The bottom of the liquid storage tank 1 is connected to an infusion pipe 10, and a balancing component for adjusting the cross-sectional area of the infusion pipe 10 is installed at the connection between the infusion pipe 10 and the liquid storage tank 1; a first one-way valve 15 is provided inside the infusion pipe 10 to allow the liquid to flow toward the stabilizing airbag 8.

[0045] The balancing assembly includes a fixing base 5 integrally formed with the liquid storage tank 1. A balancing chamber 16 communicating with the infusion pipe 10 is provided within the fixing base 5. An adjusting block 13 is slidably fitted within the balancing chamber 16. Several return springs 12 are bonded between the top of the adjusting block 13 and the top wall of the balancing chamber 16. The adjusting block 13 divides the balancing chamber 16 from top to bottom into a pressure chamber and a throttling chamber. When the return spring 12 is in its initial position, the adjusting block 13 is located directly above the infusion pipe 10.

[0046] A sustained-release component for reducing the release rate of the drug solution and connected to the sustained-release layer 7 is opened in the side wall of the stabilizing airbag 8, and one end of the infusion pipe 10 is connected to the sustained-release component; the stabilizing airbag 8 is connected to the air supply channel 4, and the air supply channel 4 is connected to the pressure chamber and the top of the liquid storage tank 1 at one end away from the stabilizing airbag 8; it also includes a pump component, the pump component is connected to the trachea 9, the stabilizing airbag 8 is connected to the trachea 9, and a third one-way valve 17 is provided inside the trachea 9.

[0047] The slow-release component includes a slow-release cavity 18 opened on the inner wall of the stabilizing airbag 8 and communicating with the infusion pipe 10 , and a plurality of slow-release holes opened on the surface of the stabilizing airbag 8 and communicating with the slow-release cavity 18 .

[0048] A starting airbag 2 communicating with the interior of the liquid storage tank 1 is provided on the top of the liquid storage tank 1 , and a fourth one-way valve 11 is provided at the connection point between the starting airbag 2 and the liquid storage tank 1 .

[0049] The specific implementation process is as follows:

[0050] Initial pressure establishment: Medical staff manually press the starting airbag 2 on the top of the liquid storage tank 1, and the internal gas is injected into the top space of the liquid storage tank 1 in one direction through the fourth one-way valve 11, pushing the liquid medicine in the tank to form an initial pressure gradient, forcing the liquid medicine to enter the sustained-release component of the side wall of the stabilizing airbag 8 through the infusion pipe 10, quickly infiltrating the surface sustained-release layer 7, and achieving basic analgesia.

[0051] Dynamic pressure regulation: When the anorectal movement squeezes the stabilizing airbag 8, the gas inside it enters the pressure chamber and the top space of the liquid storage tank 1 synchronously through the air supply channel 4. Under the double pressurization effect: the air pressure at the top of the liquid storage tank 1 increases, further compressing the liquid medicine to accelerate the flow to the infusion pipe 10; the air pressure in the pressure chamber pushes the regulating block 13 to stretch the reset spring 12 downward, reducing the cross-sectional area of the infusion pipe 10 in the throttling chamber, and increasing the flow rate of the liquid medicine through the Venturi effect. The accelerated liquid medicine is directionally transported to the sustained-release chamber 18 through the first one-way valve 15, and after temporary buffering, it seeps out to the sustained-release layer 7 at a gradient rate through the sustained-release holes distributed on the surface, maintaining the dynamic balance of the drug concentration on the wound under the synergistic effect of tissue extrusion and liquid medicine penetration.

[0052] System reset: When the anorectal movement stops, the stabilizing airbag 8 returns to its initial state, and at the same time the third one-way valve 17 opens, and gas is replenished through the pump assembly (air pump) to ensure that the next time the stabilizing airbag 8 is squeezed, the medicine liquid and the regulating block 13 can be moved, that is, the internal air pressure of the system is maintained stable; the reset spring 12 pulls the regulating block 13 to reset, the infusion pipeline 10 restores the initial flow area, and the medicine liquid flow rate returns to the basic value. At the same time, the third one-way valve 17 prevents gas backflow, maintaining the internal pressure of the liquid storage tank 1 stable.

[0053] Some experimental data are as follows:

[0054] Table 1-Experimental project test index table

[0055]

[0056] Example 2:

[0057] The difference from the above embodiment is that, Figure 4 and Figure 5As shown, the drainage tube 6 has several auxiliary channels 19 near its inlet end, which are connected to the interior of the stabilizing airbag 8. The auxiliary channels 19 near the inlet end of the drainage tube 6 are all serpentine structures, and a second one-way valve 14 is provided in the auxiliary channels 19.

[0058] The specific implementation process is as follows: when the stabilizing airbag 8 is pressurized, part of the gas forms a pulse airflow through the serpentine auxiliary channel 19 to flush out foreign matter accumulated at the inlet end of the drainage tube 6, and cooperates with the second one-way valve 14 to ensure unidirectional impact of the airflow to avoid backflow blockage.

[0059] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A drainage hemostasis and sustained-release analgesia device for anorectal surgery, comprising a negative pressure machine and a liquid storage tank (1), characterized in that: The negative pressure machine is connected to a drainage tube (6); a stabilizing air bag (8) is sheathed around the inlet end of the drainage tube (6); and a slow-release layer (7) is provided on the surface of the stabilizing air bag (8); The bottom of the liquid storage tank (1) is connected to a liquid infusion pipeline (10), and a balancing component for adjusting the cross-sectional area of the liquid infusion pipeline (10) is installed at the connection between the liquid infusion pipeline (10) and the liquid storage tank (1); The balancing assembly includes a fixing seat (5) integrally formed with the liquid storage tank (1); a balancing chamber (16) communicating with the liquid infusion pipe (10) is provided inside the fixing seat (5); an adjusting block (13) is slidably fitted inside the balancing chamber (16); a plurality of return springs (12) are fixedly connected between the top of the adjusting block (13) and the top wall of the balancing chamber (16); the adjusting block (13) divides the balancing chamber (16) from top to bottom into a pressure chamber and a throttling chamber; when the return spring (12) is in an initial position, the adjusting block (13) is located directly above the liquid infusion pipe (10); A sustained-release component for reducing the release rate of the drug solution and connected to the sustained-release layer (7) is provided in the side wall of the stabilizing airbag (8), and one end of the infusion pipe (10) is connected to the sustained-release component; the stabilizing airbag (8) is connected to an air delivery channel (4), and the air delivery channel (4) is connected to the pressure chamber and the top of the liquid storage tank (1) at one end away from the stabilizing airbag (8); and a pump component is also included, and the pump component is connected to an air pipe (9), and the stabilizing airbag (8) is connected to the air pipe (9).

2. The anorectal drainage hemostasis sustained-release analgesia device according to claim 1, characterized in that The sustained-release component includes a sustained-release cavity (18) opened on the inner wall of the stabilizing airbag (8) and connected to the infusion pipe (10); and a plurality of sustained-release holes connected to the sustained-release cavity (18) are opened on the surface of the stabilizing airbag (8).

3. The anorectal drainage hemostasis sustained-release analgesia device according to claim 2, characterized in that A first one-way valve (15) is provided inside the infusion pipe (10) to allow the liquid to flow toward the stabilizing air bag (8).

4. The anorectal drainage hemostasis sustained-release analgesia device according to claim 3, characterized in that: The drainage tube (6) is provided with a plurality of auxiliary channels (19) near its inlet end, which are communicated with the interior of the stabilizing air bag (8).

5. The anorectal drainage hemostasis sustained-release analgesia device according to claim 4, characterized in that: The auxiliary channel (19) is in a serpentine structure at one end close to the inlet of the drainage tube (6).

6. The anorectal drainage hemostasis sustained-release analgesia device according to claim 5, characterized in that: A second one-way valve (14) is provided in each auxiliary channel (19).

7. The anorectal drainage, hemostasis and sustained-release analgesia device according to claim 6, characterized in that: A third one-way valve (17) is provided inside the air pipe (9).

8. The anorectal drainage hemostasis sustained-release analgesia device according to claim 7, characterized in that: A starting air bag (2) communicating with the interior of the liquid storage tank (1) is provided on the top of the liquid storage tank (1).

9. The anorectal drainage hemostasis sustained-release analgesia device according to claim 8, characterized in that: A fourth one-way valve (11) is provided at the connection point between the starting air bag (2) and the liquid storage tank (1).

10. The anorectal drainage, hemostasis and sustained-release analgesia device according to claim 9, characterized in that: The top end of the liquid storage tank (1) is threadedly connected to a sealing cover (3).

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