Osteomyelitis medullary cavity drainage device

Abstract

The utility model relates to the technical field of medical drainage devices, in particular to an osteomyelitis medullary cavity drainage device which comprises a flushing tube, a drainage tube and a liquid collecting cover with a downward opening. The negative pressure drainage device is reasonable and compact in structure and convenient to use, after flushing liquid medicine is injected into the flushing pipe, the medullary cavity of a patient can be quickly flushed, and pus, hydrops, dead bones, granulation and the like are suspended in the flushing liquid medicine after falling off and being diluted, so that the pus and the like can be quickly discharged out of the body of the patient under the action of negative pressure, and the negative pressure drainage device has the advantages of being good in drainage effect and high in speed. The liquid collecting cavity communicated with the drainage tube can effectively increase the inner diameter size of the drainage cavity, and can effectively prevent large-size scab blocks, dead bones, granulation and the like from blocking the drainage tube and affecting the drainage effect; in addition, treatment liquid medicine can be injected into the medullary cavity through the device, so that treatment medicine is directly and fully contacted with the affected part for a period of time and then is discharged through the drainage tube in time, and the phenomenon that the metabolic burden of liver and kidney functions is aggravated due to the fact that too much medicine enters the whole body tissue is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical drainage devices and is a medullary cavity drainage device for osteomyelitis. Background Art

[0002] Osteomyelitis is a kind of bone infection and destruction, which can be caused by aerobic or anaerobic bacteria, mycobacteria and fungi. Osteomyelitis requires the wound to be flushed after surgery to prevent wound infection. In order to reduce the damage to human bone tissue, the existing minimally invasive drilling technology is used to flush the bone tissue. Extensive chronic suppurative osteomyelitis of long tubular bones of the limbs is the most common chronic suppurative disease of bone tissue. It is also a disease that is difficult to treat, has unstable efficacy, a long course of treatment, is prone to recurrence, has high treatment costs and a high disability rate. Traditional surgery is difficult, costly, traumatic, and has a lot of blood loss. The bone destruction and damage are large, and the medullary cavity is not thoroughly cleared and is prone to recurrence. Postoperative flushing and drainage are easily blocked, and the course of treatment is long, with the risk of concurrent fractures. In addition, since the medullary cavity is a cavity in the human body, the medullary cavity contains a large amount of adipose tissue, hematopoietic stem cells, bone marrow stromal stem cells and immune cells. Due to the poor fluidity of fat, the existing drainage tube is used for medullary cavity drainage, and the effect is poor. Summary of the invention

[0003] The utility model provides a medullary cavity drainage device for osteomyelitis, which overcomes the deficiencies of the prior art and can effectively solve the problems of easy clogging, poor drainage effect and difficulty in cleaning the medullary cavity existing in the prior drainage tube.

[0004] The technical solution of the utility model is achieved through the following measures: a medullary cavity drainer for osteomyelitis, comprising a flushing tube, a drainage tube and a liquid collecting cover with an opening downward, a front and rear interval on the upper side of the liquid collecting cover is provided with a cleaning hole and a drainage hole that pass through inside and outside, the inner side of the cleaning hole is fixedly mounted with the outer side of the right part of the flushing tube, the inner side of the drainage hole is fixedly mounted with the outer side of the left end of the drainage tube, and the inner diameter of the drainage tube is larger than the inner diameter of the flushing tube.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] The above may also include a negative pressure drainage part and an infusion part. The right end of the drainage tube is provided with a negative pressure drainage part capable of sucking out the fluid accumulated in the medullary cavity, and the right end of the flushing tube is provided with an infusion part capable of injecting liquid medicine into the medullary cavity.

[0007] A conical pipe joint with a left-smaller shape and a right-larger shape can be fixedly installed on the right end of the flushing pipe.

[0008] An outer ring flange may be provided on the outer side of the lower end of the liquid collecting cover.

[0009] The flushing pipe may include an inner pipe and an outer pipe. The outer side of the right end of the inner pipe is fixedly mounted together with the inner side of the cleaning hole. The outer pipe is detachably mounted on the inner pipe corresponding to the outer side of the liquid collecting cover.

[0010] The utility model has a reasonable and compact structure and is easy to use. After the flushing liquid is injected into the flushing tube, the patient's medullary cavity can be quickly flushed, so that pus scabs, effusions, dead bones and granulation tissues fall off and are suspended in the flushing liquid after dilution, so that the pus scabs and the like can be quickly discharged from the patient's body under the action of negative pressure, and has the characteristics of good drainage effect and fast speed; the liquid collecting cavity connected with the drainage tube can effectively increase the inner diameter of the drainage cavity, and can effectively prevent large-volume scabs, dead bones and granulation tissues from blocking the drainage tube and affecting the drainage effect; in addition, the therapeutic liquid can also be injected into the medullary cavity through the device, so that the therapeutic drug can be directly in full contact with the affected part for a period of time, and then be discharged through the drainage tube in time, so as to avoid excessive drug entering the whole body tissues and increasing the metabolic burden of liver and kidney functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a schematic diagram of the main structure of embodiments 1-5 of the utility model.

[0012] Attached Figure 2 For attachment Figure 1 Schematic diagram of the three-dimensional structure.

[0013] The codes in the accompanying drawings are: 1 is a drainage tube, 2 is a liquid collecting cover, 3 is a cone tube joint, 4 is an outer ring flange, 5 is an inner tube, 6 is an outer tube, and 7 is a long tube bone. DETAILED DESCRIPTION

[0014] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0015] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0016] The present invention is further described below in conjunction with the embodiments and drawings:

[0017] Embodiment 1: As attached Figure 1 , 2 As shown, the osteomyelitis medullary cavity drainer includes a flushing tube, a drainage tube 1 and a liquid collecting cover 2 with an opening downward. The upper side of the liquid collecting cover 2 is provided with cleaning holes and drainage holes that pass through inside and outside at intervals on the front and back. The inner side of the cleaning hole is fixedly installed together with the outer side of the right part of the flushing tube, and the inner side of the drainage hole is fixedly installed together with the outer side of the left end of the drainage tube 1. The inner diameter of the drainage tube 1 is larger than the inner diameter of the flushing tube.

[0018] When in use, first connect the right end of the flushing tube to the liquid outlet of the liquid supply system, then put the left part of the flushing tube into the patient's medullary cavity through the drilled hole, then seal the liquid collecting cover 2 on the skin around the patient's drilled hole, and then connect the right end of the drainage tube 1 to the negative pressure machine to complete the installation of the device; then turn on the liquid supply system to send the flushing liquid or the therapeutic liquid into the patient's medullary cavity, and then turn on the negative pressure machine to allow the pus crusts, scabs and cells flushed out of the patient's medullary cavity by the flushing liquid to be discharged from the body from the liquid collecting cover 2 and the drainage tube 1 under the action of negative pressure, wherein the discharge time of the therapeutic liquid can be determined according to the retention time requirement of the drug in the patient's medullary cavity.

[0019] During the above-mentioned drainage process, since the liquid collecting cover 2 can form a liquid collecting cavity between the skin at the patient's drilling site, it is equivalent to increasing the inner cavity size of one end of the drainage tube 1, and the inner diameter of the drainage tube 1 is much larger than the inner diameter of the flushing tube, and the pus scab, effusion, scab, dead bone and granulation tissue in the medullary cavity of the patient's long tubular bone 7 will first be flushed and diluted by the flushing solution, so that their volume becomes smaller and softened and then suspended in the flushing solution. Therefore, under the action of negative pressure, the pus scab can be quickly discharged from the body and is not easy to block the drainage tube 1. The drainage operation is fast and efficient, which can effectively reduce the patient's pain, quickly clean up the pus scab, effusion, etc. in the patient's medullary cavity, and inject therapeutic drugs into the patient's medullary cavity to effectively prevent inflammation and accelerate healing.

[0020] According to the needs, the medicine supply system is an infusion device in the prior art; the liquid collecting cover 2 can be realized by a plastic suction cup or a soft rubber suction cup in the prior art, or by a plastic shell in the prior art, and its installation method can be achieved by adsorption to the skin of the patient's drill hole, or by double-sided tape or other tapes that can achieve sealed installation; in order to facilitate the flushing tube to better flush the patient's medullary cavity, the left end of the flushing tube can be provided with a constriction, and the tube wall of the part located in the medullary cavity can be provided with a plurality of spray holes that pass through the inside and outside; in order to facilitate the drainage of the accumulated fluid and pus crust in the medullary cavity, the outer diameter of the flushing tube is much smaller than the outer diameter of the drill hole, so as to facilitate the discharge of large-volume scabs.

[0021] The above-mentioned osteomyelitis medullary cavity drain can be further optimized and / or improved according to actual needs:

[0022] Embodiment 2: It also includes a negative pressure drainage part and an infusion part. The right end of the drainage tube 1 is provided with a negative pressure drainage part capable of sucking out the fluid accumulated in the medullary cavity, and the right end of the flushing tube is provided with an infusion part capable of injecting liquid medicine into the medullary cavity.

[0023] During use, the negative pressure drainage unit can effectively flow the pus scabs, scabs, dead bones and granulation tissues washed away by the flushing liquid in the medullary cavity from the drilling hole into the liquid collecting cover 2, and discharge them from the body through the drainage tube 1, and can also timely drain the remaining drugs after taking effect to the outside of the body, so as to avoid excessive entry of drugs into systemic tissues and increase the metabolic burden of liver and kidney functions; the infusion unit can not only quickly inject the flushing liquid into the patient's medullary cavity to clean the effusion and pus scabs in the medullary cavity, but also quickly inject the therapeutic liquid into the patient's medullary cavity, so that the therapeutic drugs can directly contact the wound surface in the patient's medullary cavity, thereby improving the treatment effect. According to the needs, the negative pressure drainage unit can be realized by the negative pressure machine or negative pressure pump or syringe in the prior art, and the infusion unit can be realized by the infusion pump or hanging bottle infusion system or syringe in the prior art.

[0024] Embodiment 3: As attached Figure 1 , 2 As shown, the right end of the flushing tube is fixedly installed with a tapered tube joint 3 that is small on the left and large on the right. By arranging in this way, it is more convenient to connect with the infusion part through the tapered tube joint 3.

[0025] Embodiment 4: As attached Figure 1 , 2 As shown, an outer ring flange 4 is provided on the outer side of the lower end of the liquid collecting cover 2.

[0026] By such arrangement, the contact area between the lower end of the liquid collecting cover 2 and the patient's skin can be effectively increased, so that the liquid collecting cover 2 can be more firmly fixed on the patient's skin at the drilling site to prevent it from falling off during the process of flushing the medullary cavity and drainage.

[0027] Embodiment 5: As attached Figure 1 , 2 As shown, the flushing pipe includes an inner tube 5 and an outer tube 6. The outer side of the right end of the inner tube 5 is fixedly installed with the inner side of the cleaning hole, and the outer tube 6 is detachably installed on the inner tube 5 corresponding to the outer side of the liquid collecting cover 2.

[0028] During use, the length of the inner tube 5 can be trimmed and adjusted according to the length of the patient's medullary cavity, and the length of the outer tube 6 can be selected according to the type of infusion part. The detachable installation method between the two can be achieved through the threaded connection or interference connection in the prior art, and can also be achieved through the connection method between the infusion set and the infusion set needle in the prior art.

[0029] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A medullary cavity drain for osteomyelitis, characterized in that It includes a flushing tube, a drainage tube and a liquid collecting cover with an opening downward, the liquid collecting cover can form a liquid collecting cavity between the liquid collecting cover and the skin at the patient's drilled hole, an outer ring flange is provided on the outer side of the lower end of the liquid collecting cover, and cleaning holes and drainage holes that penetrate inside and outside are provided at intervals on the front and back of the upper side of the liquid collecting cover, the inner side of the cleaning hole is fixedly installed together with the outer side of the right part of the flushing tube, and the inner side of the drainage hole is fixedly installed together with the outer side of the left end of the drainage tube, and the inner diameter of the drainage tube is much larger than the inner diameter of the flushing tube.

2. The osteomyelitis medullary cavity drain according to claim 1, characterized in that It also includes a negative pressure drainage part and an infusion part. The right end of the drainage tube is provided with a negative pressure drainage part capable of sucking out the fluid accumulated in the medullary cavity, and the right end of the flushing tube is provided with an infusion part capable of injecting liquid medicine into the medullary cavity.

3. The osteomyelitis medullary cavity drain according to claim 1 or 2, characterized in that A conical pipe joint with a left-smaller-than-right shape is fixedly installed at the right end of the flushing pipe.

4. The osteomyelitis medullary cavity drain according to claim 1 or 2, characterized in that The flushing pipe comprises an inner pipe and an outer pipe. The outer side of the right end of the inner pipe is fixedly installed with the inner side of the cleaning hole. The outer pipe is detachably installed on the inner pipe corresponding to the outer side of the liquid collecting cover.

5. The osteomyelitis medullary cavity drain according to claim 3, characterized in that The flushing pipe comprises an inner pipe and an outer pipe. The outer side of the right end of the inner pipe is fixedly installed with the inner side of the cleaning hole. The outer pipe is detachably installed on the inner pipe corresponding to the outer side of the liquid collecting cover.

Images