Small negative pressure device for postoperative wound drainage of bromhidrosis patient

Abstract

The invention provides a small negative pressure device for postoperative wound drainage of a bromhidrosis patient, and belongs to the technical field of negative pressure drainage. Comprising an injector body, an outer protective shell is clamped to the outer surface of the injector body, and a connecting ring is fixedly connected to the middle of the outer protective shell; the auxiliary negative pressure assembly is used for improving the comfort and the convenience of holding when a doctor performs suction operation, and the auxiliary negative pressure assembly is connected with the injector main body. The auxiliary negative pressure assembly is arranged, the injector body is fixed in the auxiliary negative pressure assembly, during suction operation, a doctor presses an arc-shaped button on the auxiliary negative pressure assembly, so that a push rod can be automatically pulled backwards, a negative pressure space is generated in the injector body, the difficulty of the doctor during suction operation is reduced, and the suction efficiency of the doctor is improved. The holding effect of a doctor on the injector in the tissue fluid adsorption process is improved, and the adsorption effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of negative pressure drainage, and in particular to a small negative pressure device used for drainage of wounds of patients with axillary odor after surgery. Background Art

[0002] Postoperative wound drainage for patients with axillary odor refers to a series of measures taken to ensure the cleanliness of the surgical wound, reduce fluid accumulation and promote the growth of granulation tissue in order to promote wound healing and prevent infection after axillary odor surgery (usually refers to surgery to treat axillary odor).

[0003] After a normal axillary odor surgery, it is necessary to absorb excess tissue fluid from the surgical area. The doctor holds a 20ml syringe and connects it to a scalp needle (remove the needle). The doctor uses the scalp needle to absorb excess tissue fluid from the surgical wound area, scraping back and forth while pulling the syringe. At this time, the excess tissue fluid will be absorbed under the action of the negative pressure of the syringe and finally enter the syringe through the scalp needle.

[0004] However, in actual use, when the doctor holds the syringe to extract tissue fluid, part of the tissue fluid is adhered to the inner surface of the skin and needs to be scraped off significantly. At the same time, the syringe needs to be pulled continuously. The scraped tissue fluid will be immediately sucked into the scalp needle channel and the inside of the syringe by negative pressure. The generation of negative pressure relies on the doctor's hand holding the syringe and pulling it backwards to generate negative pressure inside the syringe. Since the doctor's hand needs to fix the position of the syringe to prevent it from falling off due to excessive movement, the push rod of the syringe also needs to be pulled to generate a certain negative pressure inside the syringe. Such multiple actions are generated simultaneously, which will make the doctor's operation difficult, resulting in poor grip of the syringe by the doctor's hand during the process of adsorbing tissue fluid, affecting the doctor's progress in adsorbing tissue fluid.

[0005] Therefore, the present application provides a small negative pressure device for postoperative wound drainage for patients with axillary odor to meet the needs. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a small negative pressure device for postoperative wound drainage for patients with axillary odor to solve the problem that the existing doctor needs to fix the position of the syringe with his hands to prevent it from falling off due to excessive movement, and also needs to pull the push rod of the syringe to generate a certain negative pressure inside the syringe. Such multiple actions are generated simultaneously, which will make the doctor's operation difficult, resulting in poor grip of the syringe by the doctor's hands during the process of adsorbing tissue fluid, affecting the doctor's progress in adsorbing tissue fluid.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A small negative pressure device for postoperative wound drainage for patients with axillary odor, comprising a syringe body, an outer protective shell clamped on the outer surface of the syringe body, a connecting ring fixedly connected to the middle of the outer protective shell near the open end of the syringe body, an arc-shaped button fixedly connected to the middle of the outer protective shell near the side of the connecting ring, an anti-slip groove is provided on the outer wall of the outer protective shell near the closed end, a connecting plate is fixedly connected to the inner cavity of the outer protective shell near the side of the arc button, and a clamping ring is fixedly connected to the bottom of the outer protective shell near the side of the connecting ring; an auxiliary negative pressure component, the auxiliary negative pressure component is used to improve the comfort and convenience of the doctor's grip during suction operations, and the auxiliary negative pressure component is connected to the syringe body.

[0009] Optionally, the auxiliary negative pressure assembly includes a T-frame fixedly connected to the end of the connecting plate, a weakened portion is opened in the middle of the connecting plate, airbag 1 is fixedly connected to the side of the T-frame, airbag 2 is fixedly connected to the side of the T-frame, and a downward pressure vertical plate is fixedly connected to the top of the T-frame.

[0010] Optionally, a delivery pipe is fixedly connected to the top of the airbag 1, a clamping column is clamped in the middle of the downward pressing vertical plate, and a movable plate is fixedly connected to the side of the clamping column.

[0011] Optionally, an outer flap is fixedly connected to the surface of the outer protective shell, a side support frame is fixedly connected to the inner wall of the middle end of the outer protective shell, and a support plate is fixedly connected to the inner wall of the middle part of the outer protective shell.

[0012] Optionally, the inner cavity of the outer protective shell near the open end is fixedly connected to an inner guide ring, the middle of the inner cavity of the outer protective shell near the arc button is fixedly connected to a clamping plate, and the inner cavity of the outer protective shell near the connecting ring is slidably connected to a T-shaped slider.

[0013] Optionally, the top of the T-shaped slider is fixedly connected with a bending piece, the side of the T-shaped slider is fixedly connected with a pressure plate, the top of the side of the T-shaped slider is fixedly connected with an arc-shaped connecting plate, the back of the T-shaped slider is fixedly connected with a plate-shaped pressure block, the side of the T-shaped slider is clamped with an adjusting column, and the bottom of the T-shaped slider is fitted with an anti-falling block.

[0014] Optionally, the size of the airbag 1 is larger than that of the airbag 2, and the size of the slot in the middle of the downward pressing vertical plate is compatible with the size of the clamping column.

[0015] Optionally, the outer flap is folded outward, the side support frame is arc-shaped and protrudes toward a position close to the syringe body, one end of the support plate is fixedly connected to the inner wall of the outer protective shell, and the other end of the support plate is open.

[0016] Optionally, one side of the pressure plate is fixedly connected to the side of the T-shaped slider, the other side of the pressure plate is slidably connected to the inner cavity in the middle of the outer protective shell, one end of the arc-shaped connecting plate is fixedly connected to the top of the side of the T-shaped slider, and the top of the arc-shaped connecting plate is fixedly connected to the bottom of the arc-shaped button.

[0017] Optionally, the side surface of the adjusting column is fixedly connected to the inner cavity in the middle of the outer protective shell, and the side surface of the anti-falling block is fixedly connected to the bottom end of the inner cavity in the middle of the outer protective shell.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In the above scheme, an auxiliary negative pressure component is provided and the syringe body is fixed inside the auxiliary negative pressure component. During the suction operation, the doctor directly presses the arc button on the auxiliary negative pressure component to automatically pull the push rod backwards, thereby generating a negative pressure space inside the syringe body. At this time, the doctor only needs to perform the scraping operation correctly, which can alleviate the step of pulling the push rod backwards during the scraping operation, further reduce the difficulty of the doctor's suction operation, and improve the doctor's hand holding effect on the syringe during the adsorption of tissue fluid, ensuring that the doctor's progress in adsorbing tissue fluid is not affected.

[0020] By setting airbag one, airbag two, a downward pressure vertical plate and a delivery tube, after the syringe body is fixed on the auxiliary negative pressure component, since the size of airbag one is larger than that of airbag two and the internal air pressure values ​​are different, when the arc button is pressed, the downward pressure vertical plate originally clamped in the delivery tube will be in a separated state. At this time, the gas in airbag one will be transported to airbag two through the delivery tube. At the same time, the surface of airbag two is against the push rod. The expansion of airbag two will also cause the push rod to slide outward, thereby assisting the doctor's operation and improving the convenience during operation.

[0021] By arranging a T-shaped slider, a bending piece, an adjusting column and an anti-falling block, when the arc button is pressed normally, the T-shaped slider slides down according to the array distribution of the adjusting column, and the air pressure of the airbag after each pressing can be rhythmically controlled. On the one hand, excessive negative pressure is avoided to ensure that tissue fluid can be adsorbed during the scraping process to the greatest extent, and the phenomenon of excessive evacuation inside the syringe body is reduced. The anti-falling block can adapt to the later stage of suction, especially when the pressing force is greater, the effect of the T-shaped slider sliding downward is more obvious, and the T-shaped slider can be prevented from falling off when sliding downward.

[0022] By providing an outer protective shell, a connecting ring and a clamping ring, when the patient undergoes wound drainage, the clamping ring will be clamped on the patient's arm first, and the middle part of the clamping ring is thinner, so that the clamping ring will not be too tight during the clamping process to cause discomfort to the patient, and after clamping, the large diameter of the connecting ring will preferentially contact the patient's skin, so that the needle part of the syringe body will be tilted close to the patient's skin, and the buckle cover at the rear end of the outer protective shell that is integrally connected to the syringe body will be tilted away from the patient's skin, so that the outer protective shell as a whole will be tilted, so that during the wound drainage process, the push rod of the syringe body will not directly contact the patient's skin when it slides backward during the increase of negative pressure, avoiding pressure scratches on the patient caused by the tail and push rod of part of the syringe body during the wound drainage process, thereby improving the patient's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a small negative pressure device used for wound drainage after surgery for patients with axillary odor;

[0025] Figure 2 A schematic diagram of the cross-sectional three-dimensional structure of a small negative pressure device used for wound drainage after surgery for patients with axillary odor;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the arc button, the anti-slip groove and the inner guide ring;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of airbag 1, airbag 2 and downward pressure vertical plate;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting plate, the weakened part and the T-frame;

[0029] Figure 6 for Figure 4 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the T-frame, airbag 1 and airbag 2;

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the downward pressure vertical plate and the conveying pipe;

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the outer flap and the side support frame;

[0033] Fig.10It is a schematic diagram of the three-dimensional structure of the arc button, the anti-slip groove and the plate-shaped pressing block;

[0034] Fig.11 for Fig.10 The enlarged three-dimensional structure diagram at B in the middle;

[0035] Fig.12 for Fig.11 Enlarged schematic diagram of the three-dimensional structure at point C in the middle.

[0036] Reference numerals:

[0037] 1. Syringe body; 2. Outer protective shell; 201. Outer flap; 202. Side support frame; 203. Support plate; 3. Connecting ring; 4. Arc button; 5. Anti-skid groove; 6. Inner guide ring; 7. Snap-on plate; 8. Connecting plate; 801. Weakened portion; 802. T-shaped frame; 803. Airbag 1; 804. Airbag 2; 805. Down-pressing vertical plate; 806. Delivery tube; 807. Snap-on column; 808. Movable plate; 9. T-shaped slider; 901. Bending sheet; 902. Pressing plate; 903. Arc connecting plate; 904. Plate-shaped pressing block; 905. Adjusting column; 906. Anti-falling block; 10. Clamping ring.

[0038] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0039] The following is a detailed description of a small negative pressure device for postoperative wound drainage of patients with axillary odor provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0040] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0041] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0042] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0043] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0044] like Figures 1 to 12 As shown, an embodiment of the present invention provides a small negative pressure device for postoperative wound drainage for patients with axillary odor, comprising a syringe body 1, an outer protective shell 2 being clamped on the outer surface of the syringe body 1, a connecting ring 3 being fixedly connected to the middle of the outer protective shell 2 near the opening end of the syringe body 1, an arc-shaped button 4 being fixedly connected to the middle of the side of the outer protective shell 2 near the connecting ring 3, an anti-slip groove 5 being provided on the outer wall of the outer protective shell 2 near the closed end, a connecting plate 8 being fixedly connected to the inner cavity of the outer protective shell 2 near the side of the arc button 4, and a clamping ring 10 being fixedly connected to the bottom of the outer protective shell 2 near the side of the connecting ring 3.

[0045] The present invention also includes an auxiliary negative pressure component, which is used to improve the comfort and convenience of the physician's grip during suction operations. The auxiliary negative pressure component is connected to the syringe body 1, and the inner cavity of the outer protective shell 2 near the open end is fixedly connected to an inner guide ring 6, and the middle of the inner cavity of the outer protective shell 2 near the arc button 4 is fixedly connected to a clamping plate 7, and the inner cavity of the outer protective shell 2 near the connecting ring is slidably connected to a T-shaped slider 9. The outer protective shell 2 is cylindrical as a whole, and the port that slides in contact with the syringe body 1 is open, and the port near the anti-slip groove 5 is semi- It is closed and provided with a snap cover. After the suction is completed, the syringe body 1 needs to be taken out. At this time, pull out the snap cover and draw the syringe body 1 out of the inner cavity of the outer protective shell 2 until it slides out completely. The inner guide ring 6 is made of plastic and is in a semi-arc shape. Its end close to the outer protective shell 2 is fixedly connected to the inner cavity of the outer protective shell 2 in an inclined and fixed state, so that the syringe body 1 can fully fit and frictionally contact with the side of the inner guide ring 6 during the process of sliding into the inner cavity of the outer protective shell 2, ensuring that the syringe body 1 is in a vertical state while sliding inside the outer protective shell 2.

[0046] The clamping plate 7 is fixedly connected to the inner cavity of the outer protective shell 2. The inner cavity of the clamping plate 7 is hollow and disc-shaped as a whole with a slot in the middle. The size of the slot matches the size of the opposite end of the needle of the syringe main body 1, and the inner cavity of the slot is also hollow. The hollow height size is consistent with the thickness size of the elliptical plate of the syringe main body 1. When the end opposite to the needle of the syringe main body 1 contacts the clamping plate 7, since the end opposite to the needle of the syringe main body 1 in the prior art is provided with symmetrically distributed elliptical plates extending outward, when the syringe main body 1 is slid into the inner cavity of the outer protective shell 2, the position of the end opposite to the needle of the syringe main body 1 does not coincide with the slot in the middle of the clamping plate 7, thereby blocking the syringe main body 1. Then, by holding the syringe main body 1 and rotating the needle position by a certain angle while applying a little force, if the end opposite to the needle coincides with the slot in the middle of the clamping plate 7 during the rotation, The syringe body 1 is in a fixed state, and the connecting plate 8 is also in a semi-arc shape, and its outer ring end is fixed in the inner cavity of the outer protective shell 2, close to the position of the arc button 4, and the T-shaped slider 9 is placed in a vertical T-shape. The inner cavity in the middle of the outer protective shell 2 is provided with a hollow column, and the T-shaped slider 9 slides up and down in the hollow column. The clamping ring 10 is made of plastic material and has an arc shape. It is divided into an upper part and a bottom part. The upper part is an arc-shaped connecting plate, and the bottom is a clamping plate with a clamping function. The middle part of the connecting plate is thinner, and its top is fixed on the outer wall of the outer protective shell 2 near the bottom of the side of the connecting ring 3, and the middle part of the clamping plate is fixed to the bottom of the connecting plate. When the clamping ring 10 is opened, it is easier and more convenient to open the clamping ring 10 due to the thinner middle part.

[0047] like Figures 4 to 8As shown, the auxiliary negative pressure assembly includes a T-frame 802 fixedly connected to the end of the connecting plate 8, a weakened portion 801 is provided in the middle of the connecting plate 8, an airbag 1 803 is fixedly connected to the side of the T-frame 802, an airbag 2 804 is fixedly connected to the side of the T-frame 802, a downward pressing vertical plate 805 is fixedly connected to the top of the airbag 1 803, a conveying pipe 806 is fixedly connected to the top of the downward pressing vertical plate 805, a clamping column 807 is clamped in the middle of the clamping column 807, and a movable plate 808 is fixedly connected to the side of the clamping column 807. The weakened portion 801 is provided in the middle of the connecting plate 8, the T-frame 802 is made of plastic and is arranged in an inverted T shape, the middle part is a lightweight trough body, the side of the T-frame 802 is fixedly connected to the end of the connecting plate 8, the airbag 1 803 and the airbag 2 80 4 are fixedly connected to the sides of the T-frame 802, and connecting plates are provided at the fixed connections between the two and the T-frame 802, which can ensure that the airbag 1 803 and the airbag 2 804 are stably fixed to the sides of the T-frame 802, the downward pressing vertical plates 805 are vertically symmetrically distributed, the tops are folded outwards in a curved shape, and the spacing in the symmetrical middle parts is small. The bottoms of the downward pressing vertical plates 805 are fixedly connected to the tops of the lightweight troughs of the T-frame 802, and the two ends of the conveying pipe 806 are respectively fixedly connected to the tops of the airbags 1 803 and the airbags 2 804. The diameter of the clamping column 807 is consistent with the size of the slot hole opened in the middle of the downward pressing vertical plates 805, which is convenient for the stability of the clamping column 807 after clamping. The movable plate 808 is made of U-shaped plastic material, and the two sides of the movable plate 808 are fixedly connected to the sides of the clamping column 807.

[0048] After a period of use, if the downward pressing plate 805 is made of plastic and becomes fatigued due to aging or excessive use, the clamping effect of the middle part of the downward pressing plate 805 will be weakened, and the original clamping state will become a loose state. In this state, the clamping effect on the delivery tube 806 will be weakened, and the airbag will transmit the airflow to each other through the unblocked delivery tube 806, and finally the airbag 1 803 and the airbag 2 804 will be in a balanced value, unable to push the push rod built into the syringe body 1, and the movable plate 808 will be in a clamping state at the beginning, and will be clamped in the slot of the downward pressing plate 805 through the clamping column 807. When the downward pressing plate 805 can work normally, it will be clamped first. The outer side of the movable plate 808 and then the inner side of the movable plate 808 will continue to clamp the delivery tube 806, so that there will be no air leakage in the middle of the delivery tube 806. The side and bottom of the movable plate 808 are both fitted into the inner cavity of the downward pressing vertical plate 805. In the initial state, the volume of airbag 1 803 is larger than that of airbag 2 804, which facilitates airbag 1 803 to transport gas to airbag 2 804. Airbag 1 803 and airbag 2 804 are separated by the hollow plate of the T-shaped frame 802, so that when airbag 1 803 and airbag 2 804 expand, their adaptability can be improved through the gap in the hollow plate, thereby avoiding damage and rupture of the airbag due to excessive extrusion and deformation after expansion.

[0049] In the process of the syringe body 1 continuously advancing into the inner part of the outer protective shell 2, since the airbag 2 804 is within the outer diameter range of the syringe body 1, the syringe body 1 will touch the surface of the airbag 2 804 and squeeze each other during the sliding process. After the airbag 2 804 is squeezed, it will be deformed inward. In the continuous concave process, the bearing capacity of the airbag 2 804 is less than the force when the syringe body 1 slides, that is, the airbag 2 804 is continuously squeezed and deformed by the external force. Under the continuous action of the driving force of the syringe body 1, the airbag 2 804 is squeezed and deformed, and the weakened portion 804 is used to squeeze and deform the airbag 2 804. 01 causes the T-frame 802 to deflect when the airbag 804 is subjected to force, and the T-frame 802 deflects in cooperation with the weakened portion 801. When the syringe body 1 is continuously pushed forward until the airbag 804 is completely attached to the outer surface of the syringe body 1, the syringe body 1 can smoothly pass through the airbag 804. At this time, the syringe body 1 will not be blocked by the airbag 804. The distance between the elliptical plate of the syringe body 1 and the push rod is exactly the size of the volume of 804 in the initial state. The airbag 804 is no longer squeezed by the syringe body 1 and rebounds, and is just stuck at the connection between the syringe body 1 and the push rod.

[0050] When the downward pressing plate 805 is squeezed and opened by external force, the delivery tube 806 can deliver air normally. At this time, under the action of the pressure difference, the gas inside the airbag 1 803 will be delivered to the airbag 2 804 through the delivery tube 806. Under normal conditions, the delivery tube 806 is clamped by the downward pressing plate 805 to prevent the airbag 1 803 and the airbag 2 804 from communicating with each other. In order to prevent the clamping effect of the downward pressing plate 805 from weakening after being used for a period of time, the clamping column 807 and the movable plate 808 are added. In the embodiment, the clamping effect of the downward pressing vertical plate 805 is obviously higher than that of the movable plate 808, and the single effect of the movable plate 808 is weakened. When the clamping effect of the downward pressing vertical plate 805 is weakened, that is, the degree of opening and closing becomes larger, the clamping column 807 and the movable plate 808 replace the downward pressing vertical plate 805 to clamp the delivery pipe 806, so that when the downward pressing vertical plate 805 is opened and closed, the movable plate 808 will also be opened, so that the delivery pipe 806 also delivers gas normally, so that the delivery pipe 806 will not leak when delivering gas, thereby improving the practicability of the device.

[0051] like Fig. 9As shown, the surface of the outer protective shell 2 is fixedly connected with an outer flap 201, the inner wall of the middle end of the outer protective shell 2 is fixedly connected with a side support frame 202, and the inner wall of the middle part of the outer protective shell 2 is fixedly connected with a support plate 203. The outer flap 201 is in the shape of a truncated cone with an internal hollow, and the end fixedly connected to the outer wall of the outer protective shell 2 is a small diameter, and the end extending and bending outward is a large diameter, that is, the extended and bent end is open, the top of the clamping ring 10 is fixed to the bottom of the outer flap 201, and the support frame 202 is a hollow shape in the middle, fixed in the inner cavity of the outer protective shell 2 near the card The side of the connecting plate 7 is slightly convex in the hollowed-out position in the middle. The support plate 203 is a simple plastic flat plate, which is distributed in an arc shape, consistent with the inner diameter distribution direction of the outer protective shell 2, with a moderate thickness and a certain deformation and bending ability. It is fixed in the inner cavity of the outer protective shell 2 close to the side of the side support frame 202, and the end away from the inner cavity of the outer protective shell 2 is an open end. The length of the support plate 203 is slightly larger than the diameter of the inner cavity of the outer protective shell 2, so that when the syringe body 1 is clamped into the clamping plate 7, it can give the syringe body 1 downward support and stability. The outer flap 201 is suitable for the installation stage. During the fixing process of the syringe body 1, the doctor holds the outer side of the outer flap 201. When the doctor presses hard, the outer flap 201 will be squeezed and deformed, and the hand pressure is absorbed by the deformation capacity of the outer flap 201 itself to the maximum extent, thereby reducing the pressure of the hand on the outer protective shell 2, ensuring the overall stability of the outer protective shell 2, and the hollow part in the middle of the side support frame 202 is a convex shape, and the convex direction is away from the inner cavity of the outer protective shell 2, when the syringe body 1 slides to the card joint After the plate 7 is inside the cavity, the direction of the syringe body 1 is rotated. At this time, the position of the elliptical plate of the needle of the syringe body 1 will be against the middle part of the protrusion of the side support frame 202. Then the syringe body 1 is rotated, and the squeezing force of the elliptical plate on the middle part of the protrusion of the side support frame 202 gradually weakens, and the deformed middle part of the side support frame 202 gradually restores the shape of the protrusion, thereby helping to prevent the syringe body 1 from shaking and deflecting under the action of external force. After the rotation is completed, the elliptical disk of the syringe body 1 will be against the protrusion of the side support frame 202 to form a relatively stable state.

[0052] Among them, when the syringe body 1 is fixedly clamped in the inner cavity of the outer protective shell 2, the gap between the support plate 203 and the clamping plate 7 can just fix the protrusion at the end of the syringe body 1. At this time, the gap inside the clamping plate 7 and the blocking of the support plate 203 can effectively prevent the syringe body 1 from falling off and shifting during operation.

[0053] like Figures 10 to 12As shown, the top of the T-shaped slider 9 is fixedly connected with a bending piece 901, the side of the T-shaped slider 9 is fixedly connected with a pressure plate 902, the top of the side of the T-shaped slider 9 is fixedly connected with an arc-shaped connecting plate 903, the back of the T-shaped slider 9 is fixedly connected with a plate-shaped pressure block 904, the side of the T-shaped slider 9 is clamped with an adjustment column 905, and the bottom of the T-shaped slider 9 is attached with an anti-falling block 906. The bending piece 901 is made of elastic composite material, the top end is fixed to the top of the inner cavity of the hollow column, and the bottom end is fixed to the top of the T-shaped slider 9, so as to limit the position of the T-shaped slider 9, the pressure plate 902 is U-shaped, the two ends are bent into plastic material, and the middle vertical plate is fixed On the side of the T-shaped slider 9, the curved end fits in the hollow column of the inner cavity of the outer protective shell 2, and the pressure plate 902 changes its position as the T-shaped slider 9 slides up and down in the hollow column of the inner cavity of the outer protective shell 2. On the one hand, the friction between the curved end of the pressure plate 902 and the inner wall of the column can improve the vertical stability of the T-shaped slider 9. On the other hand, when the T-shaped slider 9 slides up and down, it can ensure that the side is always in contact with the inner wall of the column, thereby improving the lateral stability of the T-shaped slider 9. The arc-shaped connecting plate 903 is made of a hard material, and the end in the inner cavity of the outer protective shell 2 is fixedly connected to the top of the side of the T-shaped slider 9, while the end at the outer end of the outer protective shell 2 is fixed to the bottom of the arc-shaped button 4. When the arc button 4 is pressed, the arc connecting plate 903 will move downward, and the T-shaped slider 9 fixed at the bottom of the arc connecting plate 903 will also slide downward. The plate-shaped pressing block 904 is irregular in shape, and the position close to the side of the T-shaped slider 9 is fixed to the back of the T-shaped slider 9. When displacement occurs, it also moves synchronously with the T-shaped slider 9. The bottom of the plate-shaped pressing block 904 is attached to the inner wall of the downward pressing vertical plate 805. The adjusting columns 905 are distributed in a vertical array, one side of which is fixed to the inner cavity in the middle of the outer protective shell 2, and the other side slides on the side of the T-shaped slider 9, and the spacing of the adjusting column 905 array is consistent with the spacing of the T-shaped slider 9. The spacing of the slots is consistent, and the anti-fall-off block 906 is fixed in the inner cavity in the middle of the outer protective shell 2. The bending piece 901 will be slightly bent in the initial state. With the use of the pressure plate 902, when no pressure is applied, on the one hand, the T-shaped slider 9 will prevent the T-shaped slider 9 from being displaced through the resistance of the bending piece 901 and the friction of the pressure plate 902. When the arc button 4 is pressed, the arc connecting plate 903 will be displaced. At this time, the T-shaped slider 9 will move downward with the arc connecting plate 903, and the solid T-shaped slider 9 and the plate-shaped pressure block 904 will both move downward to complete the release of the negative pressure, thereby improving the stability of the negative pressure release.

[0054] Among them, when the arc button 4 is pressed, the T-shaped slider 9 will contact the adjusting column 905 when it is pressed downward, and the array-distributed adjusting columns 905 can make the T-shaped slider 9 have a consistent distance and pressure when sliding down, so that the contact force between the plate-shaped pressing block 904 and the downward pressing vertical plate 805 is consistent each time, thereby improving the negative pressure stability inside the syringe body 1, and when excessive pressure is pressed, the anti-fall-off block 906 can prevent the T-shaped slider 9 from sliding down excessively and falling off.

[0055] The workflow of the technical solution of the present invention is as follows:

[0056] In the initial state, postoperative wound drainage can be performed within 48 to 72 hours after the operation, and the overall length of the outer protective shell 2 is moderate. When used in conjunction with the syringe body 1, the tail snap cover of the outer protective shell 2 can be opened. The purpose is to allow the push rod in the syringe body 1 to slide out smoothly after being subjected to negative pressure. At the same time, during normal use, the length of the outer protective shell 2 will not affect the movement of the patient's limbs.

[0057] First, take the syringe body 1 out of the sealing bag, and align the end of the push rod in the syringe body 1 with the open end of the outer protective shell 2. Since the size of the notch at the open end of the outer protective shell 2 is consistent with the size of the back of the syringe body 1, the syringe body 1 can be slid into the interior of the outer protective shell 2, and in the process of continuous entry, the inner guide ring 6 is in contact with the syringe body 1 to prevent the syringe body 1 from being displaced during the sliding process, thereby ensuring that the end of the syringe body 1 close to the push rod is in the right position when it enters the middle position between the clamping plate 7 and the support plate 203, which is conducive to the subsequent fixing operation.

[0058] In the process of sliding the syringe body 1 into the inner cavity of the outer protective shell 2, after the push rod of the syringe body 1 passes through the clamping plate 7, it will gradually contact the second airbag 804. When in contact, the second airbag 804 will be pushed by the syringe body 1. Under the action of the thrust, the second airbag 804 will bend. The bending point is through the weakened part 801. Under the continuous thrust, the weakened part 801 will cause the second airbag 804 to bend continuously until the bending angle of the second airbag 804 is sufficient for the smooth sliding of the syringe body 1. At this time, the airbag 2 804 is no longer subjected to the thrust of the syringe body 1 and will return to its original state. During the recovery process, the position of the airbag 2 804 is stuck in the middle of the end of the syringe body 1 and the push rod. Since the length of the airbag 2 804 is longer than the distance between the end of the syringe body 1 and the push rod, the airbag 2 804 will be stuck in this position. In the initial state, the airbag 2 804 is not exactly located in the middle and lower part of the push rod. The reason for this is to cooperate with the effective generation of negative pressure in the subsequent rotation and fixed state of the syringe body 1.

[0059] After determining the position, you need to hold the syringe body 1 close to the needle and rotate the syringe body 1 counterclockwise or clockwise, with the angle controlled within 10°. If the syringe body 1 does not automatically return to the original position after rotation, it means that the fixation is successful. At this time, the end of the syringe body 1 in contact with the push rod will be just clamped in the middle of the clamping plate 7 and the support plate 203, and more of it is inside the clamping plate 7. At this time, the contact between the push rod and the airbag 804 changes from the original tilt to the middle position. Since the deformation and inflation direction of the airbag 804 are uncertain, the airbag 804 is placed in the middle position of the push rod in the syringe body 1, which can ensure the stability and generation of negative pressure in subsequent operations to the greatest extent.

[0060] Then hold the rear end of the outer protective shell 2, the surface of the anti-slip groove 5, and clamp the clamping ring 10 on the patient's arm. The thickness of the middle part of the clamping ring 10 is thinner than the upper and lower ends, so it can be easily stretched when clamping the patient's arm. After aligning it with the position to be fixed, release the clamping ring 10 and fix it on the patient's arm. After that, you can shake it slightly to ensure whether the clamping ring 10 is stable. During this clamping process, the clamping ring 10 will be thinner in the middle, so that the bottom of the clamping ring 10 will not be clamped too tightly during clamping, and the upper part of the clamping ring 10 can be in full contact with the patient's arm, thereby greatly improving the comfort of the patient without falling off, and then start to absorb tissue fluid.

[0061] When the arc button 4 is manually pressed and the arc button 4 bends downward, the arc connecting plate 903 fixed under the arc button 4 also deviates, which will drive the T-shaped slider 9 to slide downward, that is, the T-shaped slider 9 slides in the inner cavity in the middle of the outer protective shell 2, and in the process of the T-shaped slider 9 sliding downward, the plate-like pressing block 904 fixed on the side of the T-shaped slider 9 also moves downward, and the bottom of the plate-like pressing block 904 will contact the inner wall of the downward pressing vertical plate 805 after moving, and the downward pressing vertical plate 805 will fold outward, so that the middle position can effectively press the bottom of the plate-like pressing block 904, and after being pressed by force, the downward pressing vertical plate 805 will be pressed. The plate 805 will be stretched to both sides, and the clamped delivery tube 806 will be unblocked normally and no longer clamped. At this time, the gas inside the airbag 1 803 will enter the low-pressure airbag 2 804 through the delivery tube 806 due to the high air pressure, that is, the airbag 2 804 will gradually expand, and in the expanded state, it will press against the push rod of the syringe body 1, thereby causing the push rod to be continuously pulled backward. If the pulling of the push rod is stopped, the arc button 4 can be stopped. At this time, the vertical plate 805 is pressed down to restore to its original state, which will clamp the delivery tube 806, preventing the gas inside the airbag 1 803 from being transported to the airbag 2 804, and the volume and filling of the airbag 1 803 will be increased. The air effect of airbag 2 804 is much greater than that of airbag 1 804. When the push rod of the syringe body 1 is pushed to the top of the syringe body 1, airbag 2 804 can still work normally. This effect can be adapted to use in different situations. When the push rod of the syringe body 1 is pushed to the top of the syringe body 1, the volume and air pressure of airbag 2 804 will be greater than that of airbag 1 803. At this time, if the arc button 4 is pressed, airbag 2 804 will deliver air pressure to the inside of airbag 1 803, that is, airbag 2 804 will no longer be against the push rod of the syringe body 1. After this operation, the change in the position of the push rod will also cause negative pressure inside the syringe body 1 to begin to appear. While scraping, the tissue fluid is absorbed into the interior of the syringe body 1 by using negative pressure. During the suction process, since the airbag 2 804 and the airbag 1 803 have started to work and pull the push rod of the syringe body 1 after pressing, the inner cavity of the syringe body 1 has gradually begun to generate a certain negative pressure. When the hand stops pressing, the downward pressing vertical plate 805 is in a clamping state again, and the middle part of the delivery tube 806 cannot deliver the gas of the airbag 2 804 and the airbag 1 803, so the negative pressure inside the syringe body 1 is in a stable state. This method is more convenient to use, more labor-saving than the previous hand pulling, and the operation difficulty is greatly reduced.

[0062] In the process of adsorbing tissue fluid, in order to ensure that the force during adsorption is not too large or too small, when the T-shaped slider 9 slides downward, it will pass through the adjustment column 905, and the adjustment column 905 is distributed in a vertical array with consistent spacing. On this basis, after pressing a certain force, the T-shaped slider 9 will slide sequentially on the clamping of the adjustment column 905, and with the use of the pressure plate 902, when the side of the T-shaped slider 9 is in contact with or not in contact with the adjustment column 905, the other side of the T-shaped slider 9 can be kept in a relatively stable state, thereby avoiding instability and tilting during the clamping process of the T-shaped slider 9 and the adjustment column 905, causing the T-shaped slider 9 Situations such as uneven sliding may occur, and if at a later stage the negative pressure value needs to be increased, if the force of pressing the arc button 4 becomes greater, the T-shaped slider 9 will rest against the anti-falling block 906 when sliding down, and will not slide directly out of the inner cavity in the middle of the outer protective shell 2. This approach is mainly to cope with the negative pressure values ​​inside the syringe body 1 under different pressing conditions, while improving the practicality of the device, it can also adjust the different negative pressure values ​​inside the syringe body 1, so that when pressing, the pressing force can be roughly known through the sliding of the T-shaped slider 9 on the adjusting column 905, and it can also ensure that the negative pressure value transmitted to the syringe body 1 after pressing remains relatively stable.

[0063] After the adsorption operation is completed, the end of the outer protective shell 2 close to the handheld portion is twisted and opened, the push rod of the syringe main body 1 will be exposed, and the front end small hole position of the handheld syringe main body 1 is rotated and reset to the opposite position. When the syringe main body 1 can be shaken inside the outer protective shell 2, the surface is no longer fixed. At this time, the syringe main body 1 is manually pushed further toward the opening direction of the outer protective shell 2. At this time, there will be a convex portion at the end of the outer protective shell 2 that contacts the push rod. When passing through the airbag 2 804, the pushing pressure is used for the same reason to bend the airbag 2 804, and the bending effect of the airbag 2 804 is more obvious in combination with the weakened portion 801. At this time, the syringe main body 1 can smoothly pass through the inside of the outer protective shell 2 and be completely taken out, and then the tissue fluid can be pushed out using a collection dish. This behavior is to be able to replace the scalp needle and the syringe main body 1 in time, improve the cleanliness of the fixed area inside the outer protective shell 2, and ensure the hygiene and safety of postoperative wound drainage for patients with axillary odor.

[0064] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A small negative pressure device for drainage of wounds after surgery for patients with axillary odor, comprising a syringe body, characterized in that: An outer protective shell is clamped on the outer surface of the syringe body, a connecting ring is fixedly connected to the middle of the outer protective shell near the opening end of the syringe body, an arc-shaped button is fixedly connected to the middle of the outer protective shell near the side of the connecting ring, an anti-slip groove is provided on the outer wall of the outer protective shell near the closed end, a connecting plate is fixedly connected to the inner cavity of the outer protective shell near the side of the arc button, and a clamping ring is fixedly connected to the bottom of the outer protective shell near the side of the connecting ring; An auxiliary negative pressure component is used to improve the comfort and convenience of the physician's grip during suction operations, and the auxiliary negative pressure component is connected to the syringe body.

2. The small negative pressure device for postoperative wound drainage for patients with axillary odor according to claim 1, characterized in that: The auxiliary negative pressure assembly includes a T-frame fixedly connected to the end of the connecting plate, a weakened portion is opened in the middle of the connecting plate, airbag 1 is fixedly connected to the side of the T-frame, airbag 2 is fixedly connected to the side of the T-frame, and a downward pressure vertical plate is fixedly connected to the top of the T-frame.

3. The small negative pressure device for drainage of wounds after surgery for patients with axillary odor according to claim 2, characterized in that: The top of the airbag 1 is fixedly connected with a delivery pipe, the middle of the downward pressing vertical plate is clamped with a clamping column, and the side of the clamping column is fixedly connected with a movable plate.

4. The small negative pressure device for postoperative wound drainage for patients with axillary odor according to claim 1, characterized in that: An outer flap is fixedly connected to the surface of the outer protective shell, a side support frame is fixedly connected to the inner wall of the middle end of the outer protective shell, and a support plate is fixedly connected to the inner wall of the middle part of the outer protective shell.

5. The small negative pressure device for postoperative wound drainage for patients with axillary odor according to claim 1, characterized in that: The inner cavity of the outer protective shell near the open end is fixedly connected with an inner guide ring, the middle part of the inner cavity of the outer protective shell near the arc button is fixedly connected with a clamping plate, and the inner cavity of the outer protective shell near the connecting ring is slidably connected with a T-shaped slider.

6. The small negative pressure device for drainage of wounds after surgery for patients with axillary odor according to claim 5, characterized in that: The top of the T-shaped slider is fixedly connected with a bending piece, the side of the T-shaped slider is fixedly connected with a pressure plate, the top of the side of the T-shaped slider is fixedly connected with an arc-shaped connecting plate, the back of the T-shaped slider is fixedly connected with a plate-shaped pressure block, the side of the T-shaped slider is clamped with an adjusting column, and the bottom of the T-shaped slider is attached with an anti-falling block.

7. The small negative pressure device for drainage of wounds after surgery for patients with axillary odor according to claim 2, characterized in that: The size of the airbag 1 is larger than that of the airbag 2, and the size of the slot in the middle of the downward pressing vertical plate is matched with the size of the clamping column.

8. The small negative pressure device for drainage of wounds after surgery for patients with axillary odor according to claim 4, characterized in that: The outer flap is folded outward, the side support frame is arc-shaped and protrudes toward a position close to the syringe body, one end of the support plate is fixedly connected to the inner wall of the outer protective shell, and the other end of the support plate is open.

9. The small negative pressure device for drainage of wounds after surgery for patients with axillary odor according to claim 6, characterized in that: One side of the pressure plate is fixedly connected to the side of the T-shaped slider, and the other side of the pressure plate is slidably connected to the inner cavity in the middle of the outer protective shell. One end of the arc-shaped connecting plate is fixedly connected to the top of the side of the T-shaped slider, and the top of the arc-shaped connecting plate is fixedly connected to the bottom of the arc-shaped button.

10. The small negative pressure device for drainage of wounds after surgery for patients with axillary odor according to claim 9, characterized in that: The side surface of the adjusting column is fixedly connected to the inner cavity in the middle of the outer protective shell, and the side surface of the anti-falling block is fixedly connected to the bottom end of the inner cavity in the middle of the outer protective shell.

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