Medullary cavity flushing device

Abstract

The utility model discloses a medullary cavity flushing device which comprises a flushing pipe, a water absorption piece, dressing, a water outlet pipe, a positive pressure device and a negative pressure device, the water absorption piece is used for covering a wound, the dressing is used for being pasted on human body soft tissue around the wound to seal the water absorption piece, and one end of the flushing pipe penetrates through the dressing and the water absorption piece to be placed in a patient body. One end of the water outlet pipe is communicated with the water absorption piece, and the other end of the water outlet pipe is connected with the negative pressure device. A wound is covered with the water absorption part, the negative pressure device and the positive pressure device are opened at the same time, the water absorption part can absorb a large amount of seepage and blood flushed out of a marrow cavity, continuous drainage is achieved, soft tissue bacterial colonization is reduced, and soft tissue healing is facilitated; the water absorption piece can relieve edema of a wound surface except for osteomyelitis, improve local blood perfusion, reduce physical stimulation on the wound surface and draw and shrink the cavity; the water absorption piece can stretch soft tissue cells, promote granulation tissue production and promote blood vessel growth; the water absorption piece prevents the water outlet pipe from being blocked.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a medullary cavity flushing device. Background Art

[0002] Chronic osteomyelitis is a chronic infectious disease of bone tissue that can cause necrosis of bone and surrounding soft tissue. Chronic osteomyelitis is a common complication of open fractures, internal fixation surgery, diabetic foot and hematogenous bone infection. It can also evolve from incomplete treatment of acute osteomyelitis, which leads to persistent infection. The main sites of chronic osteomyelitis are the tibia and femur, and the most common sites in Africans are the toes. The disease is usually accompanied by dead bone formation or bone remodeling, and often requires surgical treatment.

[0003] The diagnosis of chronic osteomyelitis mainly relies on clinical manifestations, laboratory and imaging examinations. However, in the early stages of the disease, clinical manifestations are very hidden, laboratory indicators lack specificity and sensitivity, and imaging examinations show no obvious signs of infection, which makes it difficult for people to pay attention, resulting in a reduced chance of early detection and treatment of the disease. The disease has a long treatment cycle, a complex process, and a high risk of recurrence and disability, which poses a great challenge to surgeons.

[0004] Treatment of chronic osteomyelitis includes systemic and local treatment.

[0005] Systemic treatment includes the following 2 modalities:

[0006] 1. The use of antibiotics. The use of systemic antibiotics is an important way to treat chronic osteomyelitis. The correct approach is to use sensitive antibiotics based on the results of etiological examinations, but antibiotics can also be used empirically when the culture results are negative. The recommended duration of use is usually 4 to 6 weeks. Insufficient treatment can easily lead to recurrence of osteomyelitis. Most antibiotics are preferably administered intravenously, but for co-trimoxazole and fluoroquinolones, oral treatment of chronic osteomyelitis is more effective.

[0007] 2. Bacterial immunotherapy. Staphylococcus aureus is considered to be the most common pathogen causing chronic osteomyelitis, especially type V and type VIII strains of Staphylococcus aureus, which account for the largest proportion (98%). Studies have found that its effects on the host are mainly divided into two aspects: on the one hand, it enhances the resistance to the host's immune system; on the other hand, it triggers allergic reactions in the host, which will gradually damage the body's resistance. Therefore, bacterial capsular antigens can be used for bacterial immunotherapy of the human body. Its mechanism of action is to reduce the allergic reaction of Staphylococcus aureus, inhibit the effect of bacterial proteins on the immune system, and stimulate the human immune system at the same time. This method is similar to desensitization therapy.

[0008] Topical treatments include the following:

[0009] 1. Wound care. For wounds on the skin surface that have been ulcerated and have a small range, regular and standardized wound care can be given to promote wound healing. Care methods usually include excision of necrotic tissue, cleaning of wounds with hydrogen peroxide, and covering of wounds with silver ion dressings, hydrogels, absorbent cotton, synthetic foam sheets, etc. Topical use of growth factors and platelet-rich plasma can promote wound healing. Combined with treatments such as hyperbaric oxygen, electromagnetic therapy, and intermittent air compression, the therapeutic effect can be improved. During dressing changes, the wound can be measured regularly, including the length, width, and depth of the wound, as well as the damage to the base, the presence of sinus tracts and tunnel formation, etc., to evaluate the healing of the wound.

[0010] 2. Local debridement. Chronic osteomyelitis is more difficult to treat than acute osteomyelitis because bacteria breed in the infection focus and antibiotics are difficult to penetrate into the infection focus. Therefore, local debridement is particularly important. It is recommended to perform excessive surgical debridement in treatment to remove all fibrosis and ischemic bone tissue and soft tissue around the wound that prevent antibiotic penetration. In wound debridement, the strong oxidation and rapid bactericidal effect of ozone can eliminate more pathogens and stimulate the growth of granulation tissue. When the lesion is confined to the medullary cavity, it is not appropriate to open the bone cortex. The "reamer-irrigation-suction" system has the advantages of less damage and thorough cleaning of the medullary cavity. It can be used for debridement to remove the infection focus to the maximum extent. When the lesion area is located at the epiphysis, due to the expansion of the lesion medullary cavity, it is difficult to achieve the purpose of thorough debridement by simple medullary expansion and cleaning. A small oblong window can be opened on the cortical bone at the lesion for direct debridement; the small window is generally 7-10 mm wide and 3-9 cm long. The width should be reduced when the small window is extended. If more than 30% of the cortical bone of the bone circumference is removed after debridement, external fixation should be performed to maintain the stability of the bone structure.

[0011] There is a postoperative flushing method for osteomyelitis, which can flush the blood clots and wound bleeding formed in the bone marrow cavity as soon as possible after the operation, control wound infection, and make the wound heal as soon as possible. The clinical flushing method uses two rubber hoses, one connected to the flushing liquid hanging bottle and the other for drainage. Although this method is widely used, the flushing is slow, the pipeline is easy to be blocked, the operation is time-consuming and laborious, and the flushing is difficult to reach, the cleaning is not thorough, and it is easy to cause wound infection. Utility Model Content

[0012] In view of the deficiencies of the prior art, the utility model provides a medullary cavity flushing device, which mainly solves the problems of the prior flushing device that the flushing is slow, the pipeline is easily blocked, and the medullary cavity is not cleaned thoroughly.

[0013] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0014] A medullary cavity irrigation device, comprising an irrigation tube, a water absorbing member, a dressing, a water outlet pipe, a positive pressure device and a negative pressure device;

[0015] The water-absorbing member is used to cover the wound, and the dressing is used to stick to the human soft tissue around the wound to seal the water-absorbing member;

[0016] One end of the irrigation tube passes through the dressing and the absorbent and is placed in the patient's body, and the other end of the irrigation tube is connected to the positive pressure device;

[0017] One end of the water outlet pipe is connected to the water absorbing member, and the other end of the water outlet pipe is connected to the negative pressure device.

[0018] Furthermore, it also includes a first suction cup, which is placed on the dressing. The first suction cup, the dressing and the absorbent are provided with corresponding through holes for the flushing tube to pass through.

[0019] Furthermore, it also includes a second suction cup, which is placed on the dressing. The second suction cup and the dressing are provided with corresponding through holes for the water outlet pipe to connect to the water absorbing member.

[0020] Furthermore, the flushing pipe is a T-shaped three-way pipe formed by connecting a vertical pipe and a horizontal pipe, both ends of the horizontal pipe are water outlets and a plurality of water outlets are arranged on the circumference thereof along the length direction.

[0021] Furthermore, the water absorbing member is a sponge.

[0022] Furthermore, the dressing is a transparent dressing.

[0023] The medullary cavity flushing device of the utility model has the following advantages:

[0024] 1. Connect the flushing pipe to the positive pressure device, and the outlet pipe to the negative pressure device. Turn on the negative pressure device and the positive pressure device at the same time. The exudate is continuously sucked away while flushing. The liquid flows quickly and the flushing efficiency is high.

[0025] 2. Compared with the prior art which uses a drainage tube to directly connect the negative pressure device, the flushing device of the utility model uses a water-absorbing component to cover the wound, and the negative pressure device is connected to the water-absorbing component. The water-absorbing component can absorb a large amount of exudate and blood flushed out in the bone marrow cavity. The water-absorbing component can continuously drain, reduce soft tissue bacterial colonization, and is beneficial to the healing of soft tissue; the water-absorbing component can reduce edema of the wound surface other than osteomyelitis, improve local blood perfusion, reduce physical stimulation of the wound surface, and shrink the cavity; the water-absorbing component can stretch soft tissue cells, promote granulation tissue production, and promote blood vessel growth; the water-absorbing component avoids blockage of the water outlet pipe.

[0026] 3. Use dressings to seal absorbent parts to put the entire wound in a fully closed negative pressure drainage state, promote the timely discharge of exudate and necrotic tissue in the wound and cavity, keep the wound clean, accelerate blood circulation in the wound, and promote the growth of new blood vessels and granulation tissue.

[0027] 4. The dressing is adsorbed with a first suction cup and a second suction cup, the flushing tube passes through the through hole of the first suction cup, and the outlet pipe is connected to the second suction cup, which is helpful to reduce the problem of dressing damage and air leakage at the connection between the outlet pipe and the dressing, resulting in reduced air tightness.

[0028] 5. The water outlet pipe is connected to the surface of the water absorbing part through the second suction cup, that is to say, the water outlet pipe is at a high liquid level, and the flushing liquid can fully fill the medullary cavity. By utilizing the spring eye and reflux principle, the entire inner wall of the medullary cavity can be flushed to achieve a thorough flushing effect.

[0029] 6. The flushing pipe is a three-way pipe, which can be used to thoroughly flush the pipes in different directions.

[0030] 7. Adjustable positive pressure device, through which different pressures and flows can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the use of the medullary cavity flushing device of the embodiment of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the flushing pipe of an embodiment of the utility model;

[0033] Figure 3 It is a schematic structural diagram of the water absorbing member of an embodiment of the utility model;

[0034] Figure 4 It is a structural schematic diagram of a first suction cup in an embodiment of the utility model;

[0035] Figure 5 yes Figure 4 Another angle schematic diagram of the first suction cup. DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0038] like Figures 1 to 5As shown, a medullary cavity flushing device includes a flushing tube 1, a water absorbent 3, a dressing 4, a water outlet pipe 6, a positive pressure device and a negative pressure device; the water absorbent 3 is used to cover the wound, and the dressing 4 is used to stick to the human soft tissue 7 around the wound and seal the water absorbent 3 (that is, the dressing covers the entire surface of the water absorbent, so that the medullary cavity and the water absorbent are in a closed state); the dressing 4 and the water absorbent 3 are placed in the patient's body at one end of the flushing tube 1, and the other end of the flushing tube 1 is connected to the positive pressure device, and the positive pressure device controls the pressure and flow of the flushing tube 1; one end of the water outlet pipe 6 is connected to the water absorbent 3, and the other end of the water outlet pipe 6 is connected to the negative pressure device. The flushing tube 1 is connected to the positive pressure device, and the water outlet pipe 6 is connected to the negative pressure device. At the same time, the negative pressure device and the positive pressure device are turned on, and the exudate is continuously sucked away while flushing continuously, and the liquid flows quickly and the flushing efficiency is high. The wound is covered with absorbent 3, and the negative pressure device is connected to absorbent 3. The absorbent 3 can absorb a large amount of exudate and blood flushed out from the bone marrow cavity. The absorbent 3 can continue to drain, reduce soft tissue bacterial colonization, and is conducive to the healing of soft tissue; the absorbent 3 can reduce edema of the wound surface outside osteomyelitis, improve local blood perfusion, reduce physical stimulation of the wound surface, and shrink the cavity; the absorbent 3 can stretch soft tissue cells, promote granulation tissue production, and promote blood vessel growth; the absorbent 3 avoids blockage of the water outlet pipe. The dressing 4 is used to seal the absorbent, so that the entire wound is in a state of fully enclosed negative pressure drainage, promote the timely discharge of exudate and necrotic tissue in the wound and cavity, keep the wound clean, and accelerate blood circulation in the wound, and promote the growth of new blood vessels and granulation tissue.

[0039] As a preferred solution, the medullary cavity flushing device also includes a first suction cup 2, which is placed on the dressing. The first suction cup 2, the dressing 4 and the absorbent member 3 are provided with corresponding through holes 4 for the flushing tube 1 to pass through. This helps to avoid damage to the dressing 4, thereby avoiding the problem of reduced sealing performance affecting the liquid flow rate.

[0040] As a preferred solution, the medullary cavity flushing device further includes a second suction cup 5, which is placed on the dressing 4. The second suction cup 5 and the dressing 4 are provided with corresponding through holes 8 for the water outlet pipe 6 to connect to the water absorbing member 3. The second suction cup 5 is provided to reduce the problem of damage to the dressing 4 and air leakage at the connection between the water outlet pipe 6 and the dressing 4, which leads to a decrease in air tightness. The water outlet pipe 6 is connected to the surface of the water absorbing member 3 through the second suction cup 5, that is, the water outlet pipe 4 is at a high liquid level, and the flushing liquid can fully fill the medullary cavity. By using the spring eye and reflux principle, the entire inner wall of the medullary cavity can be flushed to achieve a thorough flushing effect.

[0041] The flushing tube 1 is a T-shaped three-way tube formed by connecting a vertical tube 12 and a horizontal tube 11. The two ends of the horizontal tube 11 are water outlets 13, and a plurality of water outlets 13 are arranged on the circumference along the length direction. The flushing tube 1 is flexible. The horizontal tube 11 passes through the through holes 8 on the first suction cup 2, the dressing 4 and the water-absorbing member 3 in sequence and is then placed in the medullary cavity of the patient. The two ends of the horizontal tube 11 extend into the epiphyseal ends of the two ends of the medullary cavity respectively. This shape of the flushing tube 1 is conducive to multi-point and all-round flushing of the medullary cavity, and the medullary cavity is thoroughly cleaned.

[0042] An incision is made in the cortical bone at the lesion site, the absorbent member 3 is covered on the soft tissue 7, and the flushing tube 1 is extended into the two ends of the epiphysis of the medullary cavity through the absorbent member 3 and the incision. The flushing tube 1 is connected to a positive pressure device, which pumps a flushing solution such as physiological saline and antibiotics into the medullary cavity, and adjusts different pressures and flows of the flushing tube 1 (the flushing pressure and flow of the flushing tube 1 by the positive pressure device are not constant, and belong to an intermittent different flow and pressure design) to flush out the infection focus in the medullary cavity. The water flushed into the medullary cavity will return to the opening of the cortical bone. The soft tissue 7 at the opening is covered with the absorbent member 3. The absorbent member 3 is connected to the negative pressure device through the second suction cup 5 and the water outlet pipe 6. The water flushed out of the medullary cavity is sucked away by the negative pressure absorbent member 3, and the flushing is repeated continuously until the bacteria and infection focus in the medullary cavity are completely removed.

[0043] The absorbent 3 is covered on the soft tissue 7 outside the osteomyelitis. The absorbent 3 can absorb a large amount of exudate and blood flushed out in the bone marrow cavity. The absorbent 3 can continuously drain, reduce bacterial colonization in the soft tissue 7, and facilitate the healing of the soft tissue 7. The absorbent 3 can reduce edema on the wound surface outside the osteomyelitis, improve local blood perfusion, reduce physical stimulation on the wound surface, and shrink the cavity. The absorbent 3 can stretch the cells of the soft tissue 7, promote the production of granulation tissue, and promote blood vessel growth.

[0044] The steps for using the medullary cavity irrigation device are as follows:

[0045] Step 1: Open an incision in the cortical bone of the patient's lesion;

[0046] Step 2: insert the irrigation tube 1 from the wound into the medullary cavity. The irrigation tube 1 is a T-shaped three-way tube formed by connecting a vertical tube 12 and a horizontal tube 11. The two ends of the horizontal tube 11 are water outlets 13, and a plurality of water outlets 13 are arranged on the circumference along the length direction. The two ends of the horizontal tube 11 extend into the epiphyseal ends of the medullary cavity respectively, and the vertical tube 12 extends out of the wound.

[0047] Step 3: Cover the wound with the absorbent member 3, cover the absorbent member 3 with the dressing 4, place the first suction cup 2 on the dressing 4 at the corresponding position of the wound, the first suction cup 2 is provided with a through hole 8, the vertical tube 12 passes through the absorbent member 3, the dressing 4 and the first suction cup 2 and is connected to the positive pressure device, and the positive pressure device is connected to the flushing bottle;

[0048] Step 5: placing a second suction cup 5 on the dressing 4, the second suction cup 5 is connected to the water outlet pipe 6, the second suction cup 5 and the dressing 4 are provided with corresponding through holes 8 to connect the water outlet pipe 6 with the water absorbing member 3, and the water outlet pipe 6 is connected to the negative pressure device;

[0049] Step 6: Turn on the switch of the positive pressure device, adjust the flushing water flow, and use the water flow to flush the medullary cavity to flush out the infected focus in the medullary cavity. The water that has flushed into the medullary cavity returns to the wound and is absorbed by the water absorbing part 3. At the same time, turn on the negative pressure machine, and the water absorbed by the water absorbing part 3 is sucked away by the negative pressure device. Repeat the flushing until the bacteria and infected focus in the medullary cavity are completely removed.

[0050] The water absorbing member 3 includes but is not limited to sponge, gauze, cotton, etc. In this embodiment, the water absorbing member 3 is preferably a sponge, which has good water absorption.

[0051] The dressing 4 used in this embodiment is an object with a sealing effect, such as a transparent dressing (surgical film), a silver dressing, a hydrocolloid dressing, etc. Transparent dressings are preferred, which are low in price, good in sealing, and are usually abundant in hospitals, more common, and easy to use.

[0052] As described above, the embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model. Therefore, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the protection scope of the utility model.

Claims

1. A medullary cavity flushing device, characterized in that: It includes a flushing tube, a water absorbing part, a dressing, a water outlet pipe, a positive pressure device and a negative pressure device; The water-absorbing member is used to cover the wound, and the dressing is used to stick to the human soft tissue around the wound to seal the water-absorbing member; One end of the irrigation tube passes through the dressing and the absorbent and is placed in the patient's body, and the other end of the irrigation tube is connected to the positive pressure device; One end of the water outlet pipe is connected to the water absorbing member, and the other end of the water outlet pipe is connected to the negative pressure device; The flushing pipe is a T-shaped three-way pipe formed by connecting a vertical pipe and a horizontal pipe. Both ends of the horizontal pipe are water outlets and a plurality of water outlets are arranged on the circumference of the horizontal pipe in the length direction.

2. The medullary cavity flushing device according to claim 1, characterized in that: It also includes a first suction cup, which is placed on the dressing. The first suction cup, the dressing and the water absorbent are provided with corresponding through holes for the flushing tube to pass through.

3. The medullary cavity flushing device according to claim 1 or 2, characterized in that: It also includes a second suction cup, which is placed on the dressing. The second suction cup and the dressing are provided with corresponding through holes for the water outlet pipe to connect to the water absorbing member.

4. The medullary cavity flushing device according to claim 1, characterized in that: The water absorbing member is a sponge.

5. The medullary cavity flushing device according to claim 1, characterized in that: The dressing is a transparent dressing.

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