CN218852872U - Portable negative pressure flushing device suitable for narrow infected area - Google Patents

Abstract

The utility model provides a portable negative pressure flushing device suitable for narrow infection areas, which comprises a pressurizing and pushing device, an injector, a suction device, a flushing pipeline and a resorption pipeline, wherein a flushing end of the flushing pipeline and a resorption end of the resorption pipeline are arranged in parallel and tightly without communication; one end of the flushing pipeline is communicated with the inner space of the injector, the other end of the flushing pipeline is a flushing end, one end of the suck-back pipeline is communicated with the suction device, the other end of the suck-back pipeline is a suck-back end, and when the infected area is flushed, the flushing end and the suck-back end both extend into the infected area. The utility model discloses simple structure, convenient operation carries out the resorption when washing, and the narrow infection area in space of significantly lightening pressure when washing increases the circulation flow of liquid, reduces the pain when washing, improves the efficiency of washing, conveniently carries, and the security is good, is fit for using at hospital and colleges and universities, battlefield.

Description

Portable negative pressure washing unit suitable for narrow infection area

Technical Field

The utility model relates to an oral medical instrument field specifically relates to a portable negative pressure washing unit suitable for narrow infection area, especially a portable negative pressure washing unit for wisdom tooth crown periinflammation.

Background

Pericoronitis of the wisdom tooth refers to inflammation of soft tissues around the crown of the tooth when the wisdom tooth (the third molar) is not fully erupted or impacted, and is commonly seen in pericoronitis of the following maxilla clinically. The etiological factor is that human beings have the degeneration of chewing organs along with the change of food types in the evolution process, so that the length of jaw bones is inconsistent with the required length of dentition. The third molar of the lower jaw is the last erupting tooth in the dentition, and can cause different degrees of impacted growth due to insufficient eruption position. Pericoronitis of the wisdom tooth often occurs in young people in their 18-30 years of age. As shown in fig. 17, during the eruption of the wisdom tooth 14, the tooth crown can be partially or completely covered by the gingival flap, a deep gingival blind pocket 16 with a small mouth and a large bottom is formed between the gingival flap and the tooth crown, and bacteria and food residues 17 are easily embedded in the gingival blind pocket 16. The posterior area of the affected side bruxism is distended and uncomfortable, the crown is covered by the red and swollen and inflamed gingival flap 18, and the pain is aggravated when the opening moves. If the disease condition continues to develop, spontaneous jumping pain or radioactive pain can appear on the local part, and different degrees of opening limitation can appear, and pus 19 overflows from the gum pocket of the affected tooth.

The washing liquid for local washing of the gingival pocket is very effective, the swelling feeling is greatly reduced after the washing, the pathogeny is removed by the washing, and therefore the effect is immediately achieved after the washing, and the symptom is greatly relieved. During flushing, the needle is inserted into the blind bag, and the gingival pocket is flushed repeatedly with 3% hydrogen peroxide, physiological saline and the like until the overflow liquid is clear. However, when the gingival is washed, pus and the like originally exist in the blind bag due to the fact that the blind bag swells, the current washing mode is positive pressure washing, the pressure in the gingival bag rises rapidly, and a patient feels very painful. Patients are often accompanied by restricted openings due to local inflammation and are unable to take analgesia in an anesthetic manner. Doctors can only use a very slow flow of irrigation fluid to rinse, and the patient still feels very painful, has a howling feeling and even tears. Some patients cannot tolerate the pain and cannot insist that the flushing is finished, and the doctor is required to stop the flushing.

The inflammation of pericoronitis of the wisdom tooth develops rapidly and can even cause various gap infections and systemic complications of the maxillofacial region. Colleges and military, most of the young and middle-aged people 18-30 years old are in the age stage where wisdom teeth sprout, and the incidence of wisdom tooth pericoronitis is high due to mental stress, high learning or working pressure, lack of oral hygiene and health care knowledge, inconvenience in medical conditions and the like, so that the treatment is very important nearby and timely.

SUMMERY OF THE UTILITY MODEL

To the defects in the prior art, the utility model aims at providing a portable negative pressure washing unit suitable for narrow infection area.

According to the utility model, the portable negative pressure flushing device suitable for narrow infection areas comprises a pressurizing and pushing device, an injector, a suction device, a flushing pipeline and a suck-back pipeline, wherein a flushing end of the flushing pipeline and a suck-back end of the suck-back pipeline are arranged in parallel and are not communicated;

one end of the flushing pipeline is communicated with the inner space of the pressurizing and pushing device, the other end of the flushing pipeline is a flushing end, one end of the suck-back pipeline is communicated with the suction device, the other end of the suck-back pipeline is a suck-back end, and when an infected area is flushed, the flushing end and the suck-back end both extend into the infected area.

Preferably, the flushing pipeline and the suck-back pipeline are a metal flushing needle and a metal suck-back needle which are connected side by side but not communicated.

Preferably, the flushing pipeline and the suck-back pipeline are integrally formed by injection molding.

Preferably, the suck-back end is arranged beyond the flushing end, and when the infected area is flushed, the suck-back end extends into the infected area before the flushing end;

or the flushing end is arranged beyond the suck-back end, and when the infected area is flushed, the flushing end extends into the infected area before the suck-back end.

Preferably, one end of the suck-back pipeline is connected with the suction device through a suck-back pipeline interface and a suck-back conduit.

Preferably, one end of the flushing pipeline is connected with the end part of the syringe through a direction changing device.

Preferably, the direction changing device comprises a multi-way pipe, and the flushing pipeline and the injector can be connected with different ends of the multi-way pipe so as to change the angle between the flushing pipeline and the injector;

the multi-way pipe is not connected with the flushing pipeline and the pipeline of the injector and is sealed by a rubber cap, so that liquid is prevented from flowing out.

Preferably, the direction changing device comprises a threaded universal pipe, and two ends of the threaded universal pipe are respectively connected with the flushing pipeline and the injector;

preferably, the pressurizing and pushing device comprises a manual pressurizing and pushing device or an automatic pressurizing and pushing device, and the pressurizing and pushing device is communicated with the inner space of the syringe or is directly connected with the flushing pipeline.

Preferably, the ends of the suck-back end and the flushing end extending into the infected area are both round and oblique;

one or more suck-back small holes are formed in the upper side of the suck-back end.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses simple structure, convenient operation adopts the technical means who carries out the resorption when washing, alleviates the pressure in the blind bag of gum when washing greatly, increases the circulation flow of liquid, reduces the pain when washing, improves the efficiency of washing, conveniently carries, and the security is good, is fit for using in colleges and universities, hospital or battlefield.

2. The utility model discloses a set up the technical means of deviator between washing pipeline and syringe, can change the orientation of washing the suck-back syringe needle according to the direction position of patient's tooth in the treatment to adapt to long and narrow regional treatment.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the working principle of the present invention for flushing and sucking back the far and middle sides of teeth when a flushing and sucking back needle head formed by welding is adopted;

FIG. 2 is a schematic view of the present invention illustrating the adjustment of the horizontal direction of the syringe needle when the syringe needle is formed by welding;

FIG. 3 is a schematic view showing the working principle of the utility model for washing and sucking back the buccal side of the tooth when the washing and sucking back needle head formed by welding is adopted;

fig. 4 is a horizontal sectional view of irrigating pericoronitis of a wisdom tooth;

FIG. 5 is a schematic structural view of the injection-molded flushing and suction pipeline of the present invention;

FIG. 6 is a perspective view of the flushing line and the suck-back line of the present invention when the injection molded flushing suck-back line is used;

FIG. 7 is a schematic cross-sectional view of the horizontal direction of the injection molded flushing and suction line of the present invention;

FIG. 8 is a schematic cross-sectional view taken along the line M-N of FIG. 7;

FIG. 9 is a schematic structural view of the connection between the middle flushing suck-back pipeline and the threaded universal pipe of the present invention;

FIG. 10 is a schematic view of the connection structure of the middle flush suction line and the multi-way pipe of the present invention;

FIG. 11 is a schematic structural view of a middle multi-way tube according to the present invention;

FIG. 12 is a perspective view of the connection of the mid-flush suckback line with the multi-way tube of the present invention;

FIG. 13 is a schematic view of the operation principle of the present invention when the middle irrigation suction line is connected to the screw universal tube for irrigation and suction at the far and middle sides of the tooth;

FIG. 14 is a schematic view of the operation principle of the present invention, when the irrigation and suction pipeline is connected to the screw universal tube, performing irrigation and suction on the buccal side of the tooth;

FIG. 15 is a schematic view of the operation principle of the present invention when the middle irrigation suction line is connected to the multi-way tube for performing irrigation suction on the far and middle sides of the teeth;

FIG. 16 is a schematic view of the operation principle of the present invention, when the irrigation and suction line is connected to the multi-way tube, performing irrigation and suction on the buccal side of the teeth;

fig. 17 is a schematic diagram of pericoronitis of wisdom tooth.

The figures show that:

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

The utility model discloses a portable negative pressure washing unit suitable for narrow infection region carries out the resorption when washing, alleviates the pressure in the blind bag of gum when washing greatly, increases the circulation flow of liquid, reduces the pain when washing, improves the efficiency of washing, conveniently carries, and the security is good, is fit for using in colleges and universities and battlefield of hospital and young person gathering.

According to the portable negative pressure flushing device suitable for the narrow infection area provided by the utility model, as shown in fig. 1-17, the device comprises a pressurizing and pushing device, an injector, a suction device, a flushing pipeline 2 and a suck-back pipeline 1, wherein a flushing end 7 of the flushing pipeline 2 and a suck-back end 5 of the suck-back pipeline 1 are arranged side by side and tightly and are not communicated; one end of the flushing pipeline 2 is communicated with the internal space of the pressurizing and pushing device, the other end of the flushing pipeline 2 is a flushing end 7, one end of the suck-back pipeline 1 is communicated with the suction device, and the other end of the suck-back pipeline 1 is a suck-back end 5; one end of the return line 1 is connected to a suction device, preferably a transparent hose, via a return conduit 20.

When the infected area is washed, the washing end 7 and the suck-back end 5 both extend into the infected area. The suction device comprises a negative pressure suction device of a dental chair, a household portable sputum aspirator and the like, and is used for outdoor scenes or scenes without dental equipment. The pressurizing and pushing device comprises a manual pressurizing and pushing device or an automatic pressurizing and pushing device, the pressurizing device is communicated with the inner space of the injector, or the pressurizing and pushing device is directly connected with the flushing pipeline 2 and used for applying pressure for pushing liquid to the liquid supply catheter and further to the flushing needle head, and a switch for controlling the pressurizing device to operate is arranged on a handheld portion of the pressurizing device. The pushing speed of the pressurizing and pushing device is controllable and adjustable, the pressurizing and pushing device can push at a very slow speed and a uniform speed, and the comfort of a patient is improved.

The flushing and back-sucking needle head comprises the following two schemes:

the first scheme comprises the following steps: as shown in fig. 1-3, the flushing pipe 2 and the suck-back pipe 1 are a metal flushing needle and a metal suck-back needle welded together in parallel. Welded forming's washing resorption syringe needle is including the fourth pipeline section 11, fifth pipeline section 12 and the sixth pipeline section 13 that connect gradually, washes end 7 and resorption end 5 and is equivalent to fourth pipeline 11, washes end 7 and resorption end 5 zonulae occludens and each other not communicate with each other for go deep into the narrow infected area and be the gum bag between wisdom tooth 14 and the gum 3. The fifth pipe section 12 and the sixth pipe section 13 belong to the return line 1 and the flushing line 2. Since the suction line 1 and the irrigation line 2 are finally connected to the suction device and the pressure pushing device, respectively, the suction line 1 and the irrigation line 2 are tightly connected and not communicated with each other at the side close to the fourth line 11, so that the view of the doctor is not blocked, and the part close to the sixth line 13 tends to be gradually separated. As shown in fig. 4, the horizontal cross-section of the irrigation gum pocket on the distal, buccal and lingual sides requires the insertion of the irrigation suck-back needle into the pocket between the distal and facial (buccal) and lingual sides of the wisdom tooth 3, and the double row of needles is arranged in the bucco-lingual direction when the distal and medial sides of the wisdom tooth are irrigated. When the buccal side and the lingual side of the wisdom teeth are washed, the double rows of needles are arranged in the near-far direction; the metal washing needle head is connected with the outside of the metal suck-back needle head without the inside of the metal suck-back needle head, and the horizontal section of the metal washing needle head is in a double-tube structure. The metal needle has good rigidity and toughness, is very easy to adjust the orientation of the needle, is economical and is easy to popularize.

Scheme II: as shown in fig. 5 to 8, the flushing line 2 and the suck-back line 1 are integrally formed by injection molding. The injection-molded integrally-formed washing and sucking needle comprises a first pipe section 8, a second pipe section 9 and a third pipe section 10, wherein an included angle beta between the first pipe section 8 and the second pipe section 9 is larger than or equal to 90 degrees so as to be convenient for penetrating between teeth and gum, and an included angle gamma between the second pipe section 9 and the third pipe section 10 is larger than 0 degree and smaller than 180 degrees, preferably smaller than or equal to 90 degrees, namely, the included angle between the second pipe section and the third pipe section along the direction of Z-axis to the teeth is smaller than or equal to 90 degrees. The interior of the third pipe section 10 is communicated with the back suction pipeline 1 and is connected with negative pressure strong suction or weak suction of the dental chair or other negative pressure devices through a back suction pipeline connector 6. Preferably, the suck back line port 6 is matched with the port of a 5ml syringe, and once blockage occurs, the syringe can be used for flushing, the blockage problem can be solved quickly, or the device can be discarded and replaced by a new device for suck back. Scheme two traditional Chinese medicine uses plastics material pliability good, can better adaptation and go deep into the gum bag of peri-coronary inflammation, in the process of going deep into the blind bag, is difficult to stab the gum.

The suck-back end 5 (i.e. the waste liquid recovery end) and the flushing end 7 (i.e. the liquid outlet end) are not at the same level, preferably, as shown in fig. 5, the suck-back end 5 is arranged beyond the flushing end 7, and when the infected area is flushed, the suck-back end 5 extends into the infected area before the flushing end 7. Or the flushing end 7 is arranged beyond the suck-back end 5, and when the infected area is flushed, the flushing end 7 extends into the infected area before the suck-back end 5. In above-mentioned scheme 2, the syringe needle that sucks back through injection moulding's washing can be pruned according to the needs of treatment. For example, when the blind gingival pocket is very deep and the pus in the pocket is very much, the flushing end 7 (i.e., the outlet end) can be cut shorter, and then the blind pocket can be flushed and sucked back to circulate and exchange the liquid in the blind pocket more fully.

As shown in fig. 4, the irrigation suck-back end needs to go deep into the gingival pockets between the facial side (buccal side) and lingual side and the gingiva 3 after extending into the distal side of the wisdom tooth, but based on the limitation of the patient's angular position of mouth 4, the orientation of the suck-back tube 1 and the irrigation tube 2 needs to be changed during irrigation, and one end of the irrigation tube 2 is connected with the end of the syringe through a direction changing device. The direction changing device comprises a threaded universal pipe 21, and two ends of the threaded universal pipe 21 are respectively connected with the flushing pipeline 2 and the injector. Or the direction changing device comprises a multi-way pipe 22, and the flushing pipeline 2 and the injector can be connected with different ends of the multi-way pipe 22 so as to change the angle between the flushing pipeline and the injector.

Preferably, the flushing pipeline 2, the suck-back pipeline 1 and the multi-way pipe 22 are transparent, so that the flowing condition of the liquid, the color of the suck-back liquid and the like can be observed conveniently.

Preferably, a threaded gimbals 21 is used to connect the irrigation line 2 with the syringe. The screw universal pipe 21 can be adjusted in bending direction at will, thereby changing the orientation of the flushing pipeline 2, having certain strength, keeping the bending angle of the flushing pipeline 2 unchanged when the flushing is carried, and having small volume and no blocking of the view of doctors.

Preferably, as shown in fig. 10, the multi-way tube 22 is a four-way tube type connector, and the first end, the second end and the third end (marked as g, h, i ends in fig. 10) of the multi-way tube can be connected with the back-suction syringe, and a rubber cap 23 is arranged outside the unused end of the above-mentioned ends, and the fourth end (marked as j end in fig. 10) is connected with the syringe, and the included angle between the first end and the second end and the third end is δ, and δ is generally equal to or less than 90 degrees, preferably 30-60 degrees.

At present the supporting syringe needle of 5 ml's syringe of general selection washes, and the syringe needle end is sharp-pointed sharp, probably stabs the gum, consequently preferably, resorption end 5 (i.e. waste liquid recovery end) and wash end 7 (i.e. go out the liquid end) and all blunt and be the inclined plane form to avoid stabbing the gum, the little inclined plane has the guide effect, also is convenient for go deep into the gap between gum and the tooth, thereby is different from the washing syringe needle of the sharp tooth of washing of present clinical usefulness.

The upper side of the suck-back end 5 can be provided with one or more suck-back small holes, which is beneficial to suck-back. The larger the diameter is, the better the diameter of the suck-back pipeline 1 is, usually larger than the flushing pipeline 2, which is beneficial to suck back, and prevents the suck-back pipe from being blocked, as shown in fig. 5, the suck-back end 5 and the flushing end 7 can be conical, and the force for flushing suck-back is larger. The suck back end 5 and the rinse end 7 may also be of uniform diameter tubing construction.

Examples of portable negative pressure suction devices that can be used in this embodiment include those known to those skilled in the art, such as 7E-C model domestic small sputum aspirators manufactured by Yuejie corporation, which are portable and rechargeable, and which can be carried in the field, and in hospitals.

Examples of automatic pressurizing devices that may be used with the present invention include various laboratory micropumps or syringe impellers known to those skilled in the art, such as the model V2 syringe impeller manufactured by zibo corojy electronics.

Examples of threaded gimbals that may be used with the present invention include gimbals known to those skilled in the art, such as the CJFLEX pharmaceutical grade clear wire silicone gimbals manufactured by shanghai stock flow technologies ltd.

Example 1:

this embodiment is the doctor and uses the syringe to wash the inflamed wisdom tooth on patient's right side manually, as described in above scheme 1, wash the suck-back syringe needle and weld the shaping together side by side through two needles, at first, doctor or assistant will wash the suck-back syringe needle and buckle certain angle, this angle is greater than or equal to 90 degrees, and this angle is greater than or equal to 90 degrees with fifth pipe section 12 in the contained angle of Z axle direction, as shown in fig. 1, inserts and washes the suck-back in the gum bag of the far side of tooth.

The needle is then manually oriented to irrigate the buccal or lingual side. Because the patient's mouth angle (the mouth angle is 4) blocks, the injector can not rotate horizontally by 90 degrees, so the suck-back needle head needs to be broken off and the angle of the needle head needs to be adjusted. As shown in fig. 2, the physician usually needs to break the fifth tube segment 12 to make the angle α (in the horizontal plane, i.e. the plane of the X and Y axes) between the fifth tube segment 12 and the sixth tube segment 13 (α is less than or equal to 90 degrees), and rotate the syringe properly to the left side of the patient in the horizontal plane, but the syringe cannot rotate 90 degrees horizontally due to the limitation of the angular position 4 of the mouth of the patient, so that the two needles arranged in parallel can be adapted to the narrow gap in the mesial direction of the wisdom teeth, then explore the space between the gingiva 3 and the teeth to wash and suck the buccal side of the teeth (as shown in fig. 3), then lift the whole device up and translate it to the lingual side, go deep into the gingival pocket, and continue to wash and suck the lingual side of the teeth.

Since the teeth are far from intersecting the buccal side or the lingual side at 90 degrees, the total angle of the needle change in the horizontal plane should also be 90 degrees for smooth insertion into the buccal or lingual gingival pocket, and if the angle of the hand-wrestling needle is 60 degrees (i.e., 180- α, the angle α =120 degrees formed by the fifth tube segment 12 and the sixth tube segment 13), the horizontal rotation angle of the syringe should be 30 degrees. If the patient has a large lip tear and the syringe can be rotated horizontally by 90 degrees, the buccal and lingual sides of the wisdom teeth can be washed without the needle-snapping step of fig. 2. When the needle head is broken off, aseptic medical pliers are used for breaking off the needle head, so that the safety is improved, and fingers are prevented from being punctured.

As shown in fig. 4, the horizontal cross-section of the irrigation gum pocket on the distal, buccal and lingual sides requires the insertion of the irrigation suck-back needle into the pocket between the distal and facial (buccal) and lingual sides of the wisdom tooth 3, and the double row of needles is arranged in the bucco-lingual direction when the distal and medial sides of the wisdom tooth are irrigated. When the buccal side and the lingual side of the wisdom teeth are washed, the double rows of needles are arranged in the near-far direction; the metal washing needle head is connected with the outside of the metal suck-back needle head without the inside of the metal suck-back needle head, and the horizontal section of the metal washing needle head is in a double-tube structure.

Example 2:

in this embodiment, as shown in fig. 5-8, the irrigation pipeline 2 and the suck-back pipeline 1 in the second scheme adopt injection molding, as shown in fig. 9, 13 and 14, the threaded universal pipe 21 is connected with the irrigation pipeline 2 in the second scheme, and the universal pipe can change the orientation thereof only by applying force gently with fingers, so as to realize irrigation and suck-back of the wisdom teeth far away (fig. 13) and the cheek side (fig. 14). As shown in fig. 5-9, the ends (i.e. the liquid outlet ends) of the flushing pipeline 2 and the suck-back pipeline 1 are not at the same level, preferably, the flushing end 7 (i.e. the liquid outlet end) is longer than the suck-back end 5 (i.e. the liquid outlet end) as shown in fig. 5, the flushing pipeline 2 and the suck-back pipeline 1 as shown in fig. 5 adopt a 3D injection molding scheme, so that the processing and material costs are greatly saved, and the parts (i.e. the liquid outlet ends) of the suck-back end 5 and the flushing end 7 which go deep into the gingival blind bag can be trimmed according to the needs of actual treatment;

as shown in fig. 5, the suck-back end 5 and the flushing end 7 are conical, so that the flushing suck-back force is larger.

Example 3:

in this embodiment, according to the second scheme, the flushing pipeline 2, the suck-back pipeline 1 and the multi-way pipe 22 are both injection molded, as shown in fig. 10-12 and 15-16, the multi-way pipe 22 is connected with the flushing pipeline 2, and a 3D injection molding scheme is adopted, so that the processing and material costs are greatly saved, as shown in fig. 10 and 15-16, the intersection δ between the g end and the h end of the multi-way pipe 22 is 60 degrees, and the unnecessary pipelines are sealed by the rubber caps 23.

As shown in fig. 15 and fig. 10, the flushing pipeline 2 is connected with the end g of the multi-way tube 22, the end j is connected with the injector, and the end h and the end i are both sealed by the rubber cap 23, so that the injector can be pushed by hand to flush and suck back the far and middle sides of the wisdom teeth. Then, the buccal side of the wisdom tooth is irrigated, as shown in fig. 16 and fig. 10, the irrigation pipeline 2 is connected with the h end of the multi-way pipe 22, and the g end and the i end are both closed by a rubber cap 23. Since the intersection delta between the g end and the h end of the multi-way tube 22 is 60 degrees, the injector is rotated 30 degrees towards the left side of the patient on the horizontal plane, so as to receive the obstruction of the mouth angle of the patient, and then the injector is pushed by hand to flush and suck the teeth on the buccal side. Then the whole device is lifted upwards and translated to the lingual side to go deep into the gingival pocket of the gum, and the lingual side of the teeth is continuously washed and sucked,

the parts of the suck-back end 5 and the flushing end 7, which go deep into the gingival blind bag, can be trimmed according to the actual treatment requirement;

as shown in fig. 5, the suck back end 5 and the wash end 7 are tapered, and the force of wash suck back is larger.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the essential spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. A portable negative pressure flushing device suitable for narrow infection areas is characterized by comprising a pressurizing and pushing device, an injector, a suction device, a flushing pipeline (2) and a suck-back pipeline (1), wherein a flushing end (7) of the flushing pipeline (2) and a suck-back end (5) of the suck-back pipeline (1) are arranged in parallel and tightly without being communicated;

the one end intercommunication pressurization pusher inner space that washes pipeline (2), the other end that washes pipeline (2) is for washing end (7), the one end intercommunication suction device of resorption pipeline (1), the other end of resorption pipeline (1) are resorption end (5), when washing the infection region, wash in end (7) and resorption end (5) all stretch into the infection region.

2. The portable negative pressure irrigation device suitable for narrow infected area as claimed in claim 1 wherein the irrigation line (2) and the suck back line (1) are metal irrigation needle and metal suck back needle connected side by side but not communicated.

3. The portable negative pressure irrigation device suitable for narrow infected areas according to claim 1, wherein the irrigation line (2) and the suck-back line (1) are integrally formed by injection molding.

4. The portable negative pressure irrigation device suitable for narrow infected areas according to claim 1, wherein the suck-back end (5) is arranged beyond the irrigation end (7), and when the infected area is irrigated, the suck-back end (5) extends into the infected area before the irrigation end (7);

or the flushing end (7) is arranged beyond the suck-back end (5), and when the infected area is flushed, the flushing end (7) extends into the infected area before the suck-back end (5).

5. The portable negative pressure irrigation device suitable for narrow infected areas according to claim 1, wherein one end of the back suction line (1) is connected to the suction device through a back suction line interface (6) and a back suction catheter (20).

6. The portable negative pressure irrigation device applicable to narrow infection areas according to claim 1, characterized in that one end of the irrigation line (2) is connected with the end of the syringe through a direction-changing device.

7. The portable negative pressure flushing device suitable for narrow infection areas according to claim 6, characterized in that the direction changing device comprises a screw universal tube (21), and the two ends of the screw universal tube (21) are respectively connected with the flushing pipeline (2) and the injector.

8. The portable negative pressure flushing device suitable for narrow infected areas according to claim 6, characterized in that the deviator comprises a multi-way tube (22), the flushing pipe (2) and the injector can be connected with different ends of the multi-way tube (22) so as to change the angle between each other;

the multi-way pipe (22) is not connected with the flushing pipeline (2) and the pipeline of the injector is sealed by a rubber cap (23) to prevent liquid from flowing out.

9. The portable negative pressure irrigation device suitable for narrow infected areas as claimed in claim 1, wherein the pressurized pushing device comprises a manual pressurized pushing device or an automatic pressurized pushing device, the pressurized pushing device is communicated with the inner space of the syringe, or the pressurized pushing device is directly connected with the irrigation pipeline (2) for applying the pressure of the pushed liquid to the irrigation pipeline (2).

10. The portable negative pressure irrigation device suitable for narrow infected areas as claimed in claim 1, wherein the end of the suck-back end (5) and the end of the irrigation end (7) extending into the infected area are both round and inclined;

one or more small suck-back holes are formed in the upper side of the suck-back end (5).

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