CN108542479B

CN108542479B - Uterine suction device

Info

Publication number: CN108542479B
Application number: CN201810408185.8A
Authority: CN
Inventors: 李桂英
Original assignee: Sichuan Feitinisi Medical Technology Co ltd
Current assignee: Sichuan Feitinisi Medical Technology Co ltd
Priority date: 2016-05-16
Filing date: 2016-05-16
Publication date: 2020-10-09
Anticipated expiration: 2036-05-16
Also published as: CN108309414B; CN108542479A; CN105726105A; CN108309415A; CN108309414A; CN108309415B; CN105726105B

Abstract

The embodiment of the invention provides a uterine suction device, and relates to the technical field of medical instruments. The uterine suction device comprises a connecting pipe, a holding shell, a barrel, a limiting base and a handle which are sequentially connected from the head end to the tail end; a piston, a piston connecting column, a clamping plate and a pull rod bolt are sequentially arranged in the cylinder body; the top end of the piston connecting column is fixedly connected with the piston, and the bottom end of the piston connecting column is fixedly connected with the clamping plate; and the top end of the pull rod bolt is connected with the bottom rotating pin of the piston connecting column through a pin shaft, the bottom end of the pull rod bolt is fixedly connected with the handle, and the limiting base is sleeved on the outer side of the bottom of the barrel. The pull rod bolt is pulled out with force and the clamping plate of the pull rod bolt is locked on the limiting base, so that the locking structure can not be damaged basically through the locking of the clamping plate and the limiting base in a negative pressure state. Namely, the negative pressure locking structure of the uterine suction device is reliable, and the safety performance is better.

Description

Uterine suction device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a uterine suction device.

Background

As is known, artificial abortion is a remedy after contraception failure, and mainly comprises the traditional negative pressure uterine aspiration, drug abortion and other technologies;

however, the negative pressure suction apparatuses used for induced abortion currently used by people are generally electric negative pressure suction apparatuses and traditional manual negative pressure suction apparatuses; in practical application, the uterine suction device used in the induced abortion operation needs to be connected with a suction tube to extend into the uterus, directly contact tissue on the endometrium, and suck the embryonic tissue out of the uterus through negative pressure suction operation to achieve the purpose of terminating pregnancy.

However, the conventional manual vacuum extractor (for example, a needle tube type manual vacuum extractor with patent application number 200920158735.1) has the following technical defects:

problem of the first aspect: the cylinder body of the traditional negative pressure suction apparatus lacks negative pressure scale lines, the negative pressure accuracy is poor, the accurate negative pressure absorption control is difficult to realize, and medical staff often can only judge the negative pressure during the current operation through experience; meanwhile, during specific operation, the dynasty emperor can be implemented only according to the maximum negative pressure every time, and selection and adjustment of different negative pressures cannot be realized. Obviously, as the embryo tissue size of the human embryo is greatly different after 5-6 weeks of growth compared with 8-10 weeks of growth, the required maximum dynasty emperor negative pressure requirement is completely different due to different dynasty emperor amounts; in addition, the negative pressure requirement is different in different stages of negative pressure uterine aspiration, if the traditional negative pressure suction apparatuses are adopted, the adaptability regulation capability is poor, and the negative pressure operation of special suction emperor cannot be implemented for patients with different pregnancy cycles and in different stages of the operation, so that the use of the traditional negative pressure suction apparatus often causes endometrial injury or incomplete abortion due to excessive suction of the emperor. In addition, the maximum dynasty emperor negative pressure of the barrel of the traditional negative pressure dynasty emperor sucker is about 375mmhg, and the traditional negative pressure dynasty emperor sucker can only be applied to patients with 5-7 weeks of accidental pregnancy and cannot be suitable for patients with 8-10 weeks of accidental pregnancy to use, because the maximum dynasty emperor negative pressure still cannot meet the related technical requirements.

The problem of the second aspect; the traditional negative pressure suction device adopts a valve design of inclined plane limit clamping (namely, refer to a needle tube type manual negative pressure suction device structure with the patent application number of 200920158735.1, a switch key (namely, a valve structure) with a lock catch penetrates through a lower opening, penetrates through a transmission sleeve in an upper opening, and clamps the lower opening through a raised inclined plane at the bottom of the switch key to implement sealing), but the traditional valve design has poor valve locking stability and reliability, is easy to fall off, and causes unstable negative pressure locking of the valve; meanwhile, medical staff easily and carelessly touch the valve to cause the inclined plane to be blocked, the valve rebounds, negative pressure is changed into positive pressure instantly, effusion just absorbed is quickly pumped back to the uterus together with air to cause damage to blood vessels, endometrium and the like on the endometrium, and air embolism can be caused under serious conditions to endanger the life safety of a patient. Therefore, the reliability of the negative pressure locking valve of the traditional negative pressure suction device is poor, which causes the safety problem of the negative pressure suction device.

Problem of the third aspect: when the pull rod plug in the traditional negative pressure suction apparatus sucks embryonic tissues under negative pressure, the pull rod plug is pulled out for a certain distance, and medical personnel can easily touch the pull rod plug during operation to cause pollution; the length of the pull rod bolt of the traditional negative pressure suction apparatus is too long, so that the traditional negative pressure suction apparatus is inconvenient to operate, and the pull rod bolt, the handle and the like are easy to touch clothes to cause bacterial pollution, so that how to design and reduce the total length of the apparatus during operation is a key technical problem.

Problem of the fourth aspect: above-mentioned it adopts single valve structural design and presses the operation mode that pushes forward or move back after the back, and the doctor not only is difficult for the switch, also easily the mistake touches the valve when the operation, causes the negative pressure to lose efficacy suddenly, causes the accident.

Therefore, how to overcome the above technical defects of the conventional dynasty emperor device is a problem to be solved by those skilled in the art.

Disclosure of Invention

The invention provides a uterine suction device for solving the technical problems.

The technical scheme adopted by the invention for solving the problems is as follows:

the invention provides a uterine suction device which sequentially comprises a connecting pipe, a holding shell, a cylinder body, a limiting base and a handle from the head end to the tail end;

wherein, the surface of the holding shell is also provided with a closing key and a releasing key; the sealing key is used for forming a negative pressure cavity in the cylinder body to implement locking and sealing actions; the release key is used for releasing the locking and closing action of the closing key;

a piston, a piston connecting column, a clamping plate and a pull rod bolt are sequentially arranged in the cylinder body; the top end of the piston connecting column is fixedly connected with the piston, and the bottom end of the piston connecting column is fixedly connected with the clamping plate; the top end of the pull rod bolt is connected with the bottom end rotating pin of the piston connecting column through a pin shaft, and the bottom end of the pull rod bolt is fixedly connected with the handle; the limiting base is sleeved on the outer side of the bottom of the barrel body, and a strip-shaped opening is formed in the limiting base; the limiting base is used for limiting and clamping a clamping plate on the pull rod bolt after the clamping plate is pulled to and penetrates through the strip-shaped opening of the limiting base;

the surface of the cylinder body is also provided with a plurality of negative pressure scale marks and a plurality of capacity scale marks, and the negative pressure scale marks are uniformly distributed on the surface of the cylinder body at intervals from the bottom end of the cylinder body to the top end of the cylinder body; a plurality of capacity scale lines are uniformly distributed on the surface of the cylinder body at intervals from the top end of the cylinder body to the bottom end of the cylinder body;

the minimum scale unit of the negative pressure scale mark is 10 mmhg; the initial value of the negative pressure scale mark is 0mmhg, and the maximum value is 500 mmhg; the minimum scale unit of the capacity scale line is 1 cc; the initial value of the capacity scale mark is 0cc, and the maximum value is 70 cc;

preferably, as an implementation mode, the circumferential wall of the top end of the connecting pipe is further provided with a stop groove; the stop groove is used for limiting and clamping the suction tube, and the stop groove is also used for marking the relative position of the suction tube sleeved in the connecting tube.

Preferably, as an implementation mode, the holding shell specifically comprises a left holding shell and a right holding shell; the left holding shell and the right holding shell are detachably connected with each other to form a closed holding shell; the outer surface of the holding shell is also provided with anti-skid concave grains; the anti-skidding concave grains are respectively arranged on the outer side surface of the left holding shell and the outer side surface of the right holding shell.

Preferably, as an embodiment, the top of the holding shell is further provided with a groove for installing the closing key and the releasing key.

Preferably, as an implementation mode, the closing key specifically comprises an oval cover plate part, a connecting rod part and a clamping tongue part; the connecting rod part is arranged at the bottom of the oval cover plate part of the closed key, and the tongue clamping part is arranged on the connecting rod part;

the release key specifically comprises a circular cover plate part, a protruding rod part and a clamping groove part; the bottom of the circular cover plate part of the release key is provided with a protruding rod part, and a clamping groove part is arranged on the protruding rod part; and the clamping tongue part on the connecting rod part of the closed key is in snap fit with the clamping groove part on the extending rod part of the release key.

Preferably, as an embodiment, the area of the elliptical cover plate portion of the close key is larger than the area of the circular cover plate portion of the release key.

Preferably, as an embodiment, the elliptical cover plate portion of the close key and the circular cover plate portion of the release key are always located in the groove of the grip housing, and the top surface of the elliptical cover plate portion of the close key and the top surface of the circular cover plate portion of the release key are always lower than the top surface of the grip housing.

Preferably, as an implementation mode, the bottom of the cylinder is also provided with an oval cylinder baffle; the limiting base is sleeved on the oval barrel baffle on the barrel and is fixedly connected with the barrel.

Preferably, as an implementation mode, the middle part of the handle is provided with a trepan boring; and an anti-slip layer is arranged on the inner wall of the sleeve hole of the handle.

Preferably, as an implementation mode, the anti-slip layer is a silica gel layer.

Preferably, as an implementation mode, the holding shell is made of PC engineering injection molding or ABS engineering injection molding.

Compared with the prior art, the embodiment of the invention has the advantages that:

the invention provides a uterine suction device which mainly comprises a connecting pipe, a holding shell, a cylinder body, a limiting base, a handle and the like; meanwhile, in a specific structure, a closing key and a releasing key are also arranged on the surface of the holding shell; meanwhile, a piston connecting column, a clamping plate, a pull rod bolt and the like are sequentially arranged in the cylinder body;

the dynasty emperor suction device designed by the innovative structure overcomes the related technical defects of the traditional negative pressure suction device; meanwhile, the dynasty emperor sucker provided by the embodiment of the invention has the technical advantages of wide adaptable range, high precision of negative pressure of the dynasty emperor sucker, visual measurement of the negative pressure of the dynasty emperor sucker, precise control and adjustment of the negative pressure of the dynasty emperor sucker, stable and reliable negative pressure locking structure, higher safety, bendable pull rod bolt, double-valve key matching and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of an assembly structure of a uterine suction device and a suction tube according to an embodiment of the present invention;

fig. 2 is an exploded structural schematic view of a dynasty emperor sucker and a suction tube provided in an embodiment of the present invention;

fig. 3 is a schematic view of a local explosion structure of a dynasty emperor sucker and a suction tube provided in an embodiment of the present invention;

FIG. 4 is a schematic diagram of a partial explosion structure of a dynasty emperor sucker provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of another partial explosion structure of a dynasty emperor sucker provided in an embodiment of the present invention;

FIG. 6 is a schematic diagram of a connecting tube of a dynasty emperor sucker according to an embodiment of the present invention;

FIG. 7 is a part view of a grip housing in a dynasty emperor sucker provided in an embodiment of the present invention;

FIG. 8 is a detail view of a close key in a dynasty emperor sucker provided by an embodiment of the invention;

FIG. 9 is a detail view of a release key in a dynasty emperor sucker provided by an embodiment of the invention;

FIG. 10 is a schematic diagram of a cartridge of a dynasty emperor sucker provided in an embodiment of the present invention;

FIG. 11 is an assembly view of the piston, the piston connecting post and the clamping plate in the dynasty emperor sucker provided by the embodiment of the invention;

FIG. 12 is a schematic diagram showing a pull rod bolt of a dynasty emperor sucker according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of a limiting base of a dynasty emperor sucker in accordance with an embodiment of the present invention;

FIG. 14 is a part view of a handle of a dynasty emperor sucker provided in an embodiment of the invention;

FIG. 15 shows an anti-slip layer of a grip of a dynasty emperor sucker provided by an embodiment of the present invention;

fig. 16 is a perspective view of a use state of the dynasty emperor sucker provided by the embodiment of the present invention;

FIG. 17 is a perspective view of a dynasty emperor sucker in another use state;

reference numerals:

a connecting pipe 1;

a grip housing 2; a left grip housing 21; a right grip housing 22; anti-slip dimples 23; a groove 24;

a cylinder 3; negative pressure scale lines 31; capacity scale lines 32; a cylinder block 33;

a limiting base 4; a strip-shaped opening 41;

a handle 5; a trepan 51; an anti-slip layer 52;

a blocking key 6; an elliptical cover plate portion 61; a connecting rod portion 62; a tongue-engaging portion 63;

a release key 7; a circular cover plate portion 71; a protruding rod portion 72;

a piston 8;

a piston connecting column 9;

a card board 10;

a draw bar pin 11;

a stop groove 12;

and (4) a suction tube A.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the uterine aspiration device provided by the embodiment of the present invention sequentially comprises a connecting tube 1, a holding shell 2, a cylinder 3, a limiting base 4 and a handle 5 from a head end to a tail end;

wherein, the surface of the holding shell 2 is also provided with a closing key 6 and a releasing key 7; the sealing key 6 is used for locking and sealing a negative pressure cavity (namely a cavity for sucking liquid, tissues and the like in the cylinder) formed by the cylinder; the release key 7 is used for releasing the locking and closing actions of the closing key 6;

a piston 8, a piston connecting column 9, a clamping plate 10 (see also fig. 11) and a pull rod bolt 11 (see also fig. 12) are sequentially arranged in the cylinder 3; the top end of the piston connecting column 9 is fixedly connected with the piston 8, and the bottom end of the piston connecting column 9 is fixedly connected with the clamping plate 10; the top end of the pull rod bolt 11 is connected with the bottom end rotating pin of the piston connecting column 9 through a pin shaft (not shown in the figure), and the bottom end of the pull rod bolt 11 is fixedly connected with the handle 5; the limiting base 4 is sleeved on the outer side of the bottom of the barrel 3, and a strip-shaped opening 41 is formed in the limiting base 4; the limiting base 4 is used for limiting and clamping the clamping plate 10 after the clamping plate 10 on the pull rod bolt 11 is pulled to and passes through a strip-shaped opening 41 (see also figure 13) on the limiting base;

the surface of the cylinder 3 is further provided with a plurality of negative pressure scale marks 31 and a plurality of capacity scale marks 32 (see also fig. 10), and the plurality of negative pressure scale marks start from the bottom end of the cylinder to the top end of the cylinder and are uniformly distributed on the surface of the cylinder at intervals; a plurality of capacity scale lines are uniformly distributed on the surface of the cylinder body at intervals from the top end of the cylinder body to the bottom end of the cylinder body;

the minimum scale unit of the negative pressure scale mark is 10 mmhg; the initial value of the negative pressure scale mark is 0mmhg, and the maximum value is 500 mmhg; the minimum scale unit of the capacity scale line is 1 cc; the initial value of the capacity scale mark is 0cc, and the maximum value is 70 cc; the maximum volume and the maximum negative pressure have a certain relationship; however, the maximum values corresponding to the volume scale lines on the surface of the cylinder in the embodiment of the invention are not necessarily all 70cc, and may be other values; the maximum capacity corresponding to the maximum negative pressure of 500mmhg is related to factors such as the overall sealing performance of the dynasty emperor sucker, and the like, and is not particularly limited.

In the main structure of the dynasty emperor sucker provided by the embodiment of the invention: the uterine suction device mainly comprises a connecting pipe 1, a holding shell 2, a cylinder 3, a limiting base 4, a handle 5 and other structural parts; meanwhile, in a specific structure, a closing key 6 and a releasing key 7 are further arranged on the surface of the holding shell 2; meanwhile, a piston 8, a piston connecting column 9, a clamping plate 10, a pull rod bolt 11 and the like are sequentially arranged in the cylinder 3;

the analysis of the main structure of the dynasty emperor sucker and the position relationship, the connection mode and the structural layout among specific structures can know that:

the closing key is used for locking and closing a negative pressure cavity formed by the barrel; the release key is used for releasing the locking and closing action of the closing key; obviously, the dynasty emperor sucker adopts the control of double valves, and the controllability is stronger;

wherein, a piston connecting column, a clamping plate and a pull rod bolt are sequentially arranged in the cylinder body; the top end of the piston connecting column is fixedly connected with the piston, and the bottom end of the piston connecting column is fixedly connected with the clamping plate; the top end of the pull rod bolt is connected with the bottom end rotating pin of the piston connecting column through a pin shaft, and the bottom end of the pull rod bolt is fixedly connected with the handle; the limiting base is sleeved on the outer side of the bottom of the barrel body, and a strip-shaped opening is formed in the limiting base; the limiting base is used for limiting and clamping the clamping plate (namely implementing a rotary locking negative pressure state) after the clamping plate on the pull rod bolt is pulled to and penetrates through the strip-shaped opening of the limiting base;

the surface of the cylinder body is also provided with a plurality of negative pressure scale marks and a plurality of capacity scale marks; the minimum scale unit of the negative pressure scale mark is 10mmhg (namely the abbreviation of millimeter mercury column, also called millimeter mercury column, which is a unit that the millimeter number of the height of the mercury column is directly used for representing the pressure and the pressure value); the initial value of the negative pressure scale mark is 0mmhg, and the maximum value is 500 mmhg; the minimum scale unit of the capacity scale line is 1 cc; the initial value of the capacity scale mark is 0cc, and the maximum value is 70 cc;

during specific operation, medical staff can randomly select the initial position of the piston according to the negative pressure scale mark and then press the closing key to close; then the pull rod bolt is pulled again to form negative pressure, the human embryo tissues are sucked, and finally the release key is pressed to discharge the human embryo tissues and the like after the human embryo tissues are taken out; meanwhile, the cylinder body is provided with negative pressure scale marks and capacity scale marks; therefore, the size of the negative pressure of the dynasty emperor can be selected as required, and the uterine suction amount can be visually observed (namely, the negative pressure accuracy control is realized, the visualization and the quantitative value quantization of the negative pressure dynasty emperor are realized; the negative pressure scale line and the capacity scale line have important parameter reference significance for the dynasty emperor to control the dynasty emperor by doctors, and the technical defect that the traditional dynasty emperor suction device can only control the negative pressure of the dynasty emperor by simply relying on experience is overcome);

meanwhile, when the dynasty emperor is specifically operated, medical personnel can select the negative pressure of the dynasty emperor, and the traditional dynasty emperor sucker can only control the number of dynasty emperors required currently according to experience; however, the dynasty emperor sucker provided by the invention can select the position of the initial piston (for example, a sealing key is not pressed, a corresponding scale position on a scale mark is selected, the sealing key is pressed to implement negative pressure cavity sealing), and then the pull rod bolt is pulled to the limiting base to be clamped to implement the maximum dynasty emperor sucker negative pressure at the corresponding scale position, so that the quantitative and accurate control of dynasty emperor suckers is realized. Meanwhile, the maximum dynasty emperor suction negative pressure of the dynasty emperor suction device provided by the invention is obviously improved compared with the traditional dynasty emperor suction device, so that the dynasty emperor suction device can adapt to the dynasty emperor suction operation of more patients.

Meanwhile, the dynasty emperor sucker is provided with a piston, a piston connecting column, a clamping plate, a pull rod bolt and a limiting base structure matched with the clamping plate, so that the negative pressure locking state of the dynasty emperor sucker is safer and more reliable; namely, during the specific operation of the dynasty emperor, after the closed key is locked and hermetically holds the cavity formed by the shell and the barrel, the pull rod bolt is pulled backwards to naturally form negative pressure, human embryo tissues are sucked by the suction tube at the front end, then the pull rod bolt is continuously pulled backwards with the clamping plate, the piston connecting column and the piston until the clamping plate passes through the strip-shaped opening of the limiting base, then medical personnel can rotate the pull rod bolt by a certain angle (preferably 90 degrees) and clamp the pull rod bolt, at the moment, the clamping plate is transversely clamped on the limiting base (namely, the clamping plate is staggered from the direction of the strip-shaped opening to clamp, and the clamping effect is better when the clamping plate forms an included angle of 90 degrees), and then the locking of the negative pressure of the dynasty emperor (namely, the locking of the negative pressure of the clamping plate is carried out in an operation state shown in figure 16 (namely, a natural positive pressure state) and figure 17 (namely, meanwhile, the pull rod bolt is folded to save the operation space; obviously, the negative pressure locking of the dynasty emperor is relative to the negative pressure state of the traditional dynasty emperor device which only locks the dynasty emperor by means of slope limiting, and the reliability is obviously improved; therefore, the dynasty emperor sucker with the structure has stronger safety and reliability. The problems that the reliability of a negative pressure locking valve of the traditional dynasty emperor sucker is poor, and medical accidents such as air embolism are easily caused are solved.

Meanwhile, when the dynasty emperor takes specific operations, the top end of the pull rod bolt is connected with the rotating pin at the bottom end of the piston connecting column through the pin shaft; therefore, after the medical staff clamps the clamp plate on the limiting base, the pull rod bolt can be bent to one side to rotate by utilizing the pin shaft between the pull rod bolt and the piston connecting column, and the problem that the operation is influenced by the overlong pull rod bolt is solved (as shown in fig. 17). The problem that the operation of traditional appliances is too long, operation is inconvenient, and bacteria pollution is caused due to the fact that part of structures touch clothes easily is solved. Therefore, the dynasty emperor sucker provided by the invention achieves the technical purposes of facilitating dynasty emperor suction operation and avoiding bacterial pollution by designing a mode of reducing the total length of the dynasty emperor sucker during operation.

In summary, the dynasty emperor sucker provided by the embodiment of the invention has the technical advantages of wide adaptability range, high precision of negative pressure of the dynasty emperor sucker, visual measurement of the negative pressure of the dynasty emperor sucker, precise control and adjustment of the negative pressure of the dynasty emperor sucker, stable and reliable negative pressure locking structure, higher safety, bendable pull rod bolt, double-valve key matching and the like.

Through years of research and design by scientific researchers, dozens of times of improvement and design and multiple reference to mold process design requirements, the dynasty emperor sucker with the technical characteristics is designed; meanwhile, the dynasty emperor sucker is clinically tested for dozens of times and is concerned and accepted by field users and industrial people, so that the dynasty emperor sucker can be widely applied.

It should be noted that the minimum scale unit of the negative pressure scale mark is 10 mmhg; the initial position of the negative pressure scale mark is 0mmhg, and the maximum value of the negative pressure scale mark is 500 mmhg. The minimum scale unit of the capacity scale line is 1 cc; the starting position of the volume scale mark is 0cc, and the maximum magnitude of the volume scale mark is 70 cc; wherein cc (metric volume unit) is cubicccentimeter cubic centimeter; i.e., a volume of 1 gram of water at 0 degrees celsius at standard atmospheric pressure, 1cc ═ 1 ml.

Obviously, the maximum negative pressure of the cylinder is 500mmhg, and the maximum negative pressure basically meets the maximum negative pressure requirement of the clinical standard for implementing the negative pressure dynasty emperor operation; the dynasty emperor suction scope of the dynasty emperor suction scope is obviously expanded, can be used by patients with 5-7 weeks of accidental pregnancy, can be suitable for patients with 8-10 weeks of accidental pregnancy, and overcomes the technical defect that the maximum dynasty emperor suction scope of the traditional dynasty emperor suction scope is limited in negative pressure and cannot meet the requirements of related technologies.

It should be noted that, after the adjustment of the design size of the cylinder is completed, the real volume scale may not be marked from 0 (the volume of the connecting part cannot be seen from the view); accurately marking the pressure intensity unit millimeter mercury after measurement; the two unit symbol marks are changed from the tail end to the starting end of the scale, so that the unit symbols can be seen more intuitively.

The following detailed description is provided for the specific structure and specific technical effects of the dynasty emperor sucker provided by the embodiment of the present invention:

regarding the barrel structure:

as shown in fig. 4 and 5 (see also fig. 10), the cylinder 3 is mainly provided with a piston 8, a piston connecting column 9, a clamping plate 10, a pull rod bolt 11, and the like; meanwhile, the bottom of the cylinder 3 is also sleeved with a limiting base 4; the limiting base 4 is used for limiting and clamping the clamping plate 10 (namely, implementing a rotation locking negative pressure state) after the clamping plate 10 on the pull rod bolt 11 is pulled to and passes through the strip-shaped opening 41 of the limiting base 4.

Regarding the connection pipe;

as shown in fig. 4 and 5 (see also fig. 6), the circumferential wall of the top end of the connecting pipe 1 is further provided with a stop groove 12; the stop groove 12 is used for limiting and clamping the suction tube A, and the stop groove 12 is also used for marking the relative position of the suction tube A sleeved in the connecting tube 1.

It should be noted that the suction tube is generally sleeved on the head of the connecting tube, and the connection between the suction tube and the connecting tube needs to be firmer: at present, the traditional suction tube is connected with the head (namely the front mouth) of the connecting tube through a silica gel or rubber part in the traditional suction tube, but the connection between the traditional suction tube and the connecting tube is not firm enough.

Obviously, in the structure of the dynasty emperor sucker provided by the invention, the front end of the dynasty emperor sucker connecting pipe is provided with the stop groove, and the stop groove and the inclined plane protruding at the rear part can effectively increase the contact area of the suction pipe so as to realize limit. The connecting part of the head connecting pipe and the suction pipe of the uterine suction device can be limited through the stop groove, so that the phenomenon that the suction pipe is too long in connecting length (namely, the suction pipe is not easy to pull out and detach due to too long) or too short (namely, the suction pipe is easy to fall off due to too short) can be avoided: the traditional suction tube is sleeved into the uterine suction device to a deeper depth, so that the suction tube is inconvenient to take out in the operation process, and the length can be reduced by about 0.5cm, so that the stable connection is ensured, and the taking out is convenient. When the medical staff sleeves the suction tube into the head of the connecting tube, the medical staff can obviously sense the limiting groove and can reach a standard locking position after sensing, and the suction tube can be sleeved into the connecting tube at a proper mounting position.

With respect to the grip housing;

as shown in fig. 4 and 5 (see also fig. 7), the grip housing 2 specifically includes a left grip housing 21 and a right grip housing 22; the left holding shell 21 and the right holding shell 22 are mutually detachably connected to form a closed holding shell 2; the outer surface of the holding shell 2 is also provided with anti-skid concave grains 23; the anti-skidding concave grains are respectively arranged on the outer side surface of the left holding shell and the outer side surface of the right holding shell.

The top of the grip housing 2 is further provided with a groove 24 for mounting the closing key 6 and the release key 7.

The holding shell specifically comprises a left holding shell and a right holding shell; the left holding shell and the right holding shell are detachably connected with each other to form a closed holding shell; meanwhile, the anti-slip concave lines are respectively arranged on the outer side surface of the left holding shell and the outer side surface of the right holding shell. When the traditional dynasty emperor suction device is operated, since a doctor wears gloves and is often stained with liquid, the traditional dynasty emperor suction device is easy to slip off when being held by a hand, and the control of the dynasty emperor suction device is influenced; however, the provision of the anti-slip concave patterns of the dynasty emperor sucker provided by the invention can effectively increase the friction effect of the holding shell, so that medical staff can better hold the holding shell, and further can better hold the dynasty emperor sucker.

Meanwhile, a groove is formed in the top surface of the holding shell, and the groove is convenient for hiding the closing key and the releasing key.

The holding shell 2 is specifically a PC engineering injection molding or an ABS engineering injection molding.

The engineering plastics include Polycarbonate (PC), Polyamide (PA), PolyoxyMethylene (POM), modified polyphenylene ether (modified PPE), polyester (PETP, PBTP), polyphenylene sulfide (PPS), polyarylate, and the like. The tensile strength exceeds 50MPa, the impact resistance exceeds 50J/m2, the bending elastic modulus is 24000kg/cm2, the load deflection temperature exceeds 100 ℃, and the hardness, the impact resistance and the aging resistance are excellent. Among them, the most preferable scheme of the grip housing, even the cylinder body, of the dynasty emperor sucker is a PC injection molding part, an ABS injection molding part, a PPS injection molding part or a PEEK injection molding part. The engineering injection molding piece has the outstanding high-strength characteristic, and also has the characteristics of compression resistance, strong impact resistance, irradiation resistance, stable insulativity, hydrolysis resistance and the like.

Regarding the specific structure and specific linkage relationship of the close key and the release key:

as shown in fig. 4 and 5 (see also fig. 8), the closing key 6 specifically includes an elliptical cover plate portion 61, a connecting rod portion 62, and a latch portion 63; the connecting rod part 62 is arranged at the bottom of the oval cover plate part 61 on the closed key 6, and the tongue clamping part 63 is arranged on the connecting rod part 62;

as shown in fig. 4 and 5 (see also fig. 9), the release key 7 specifically includes a circular cover plate portion 71 and a protruding rod portion 72 and a catch portion (not shown); the bottom of the circular cover plate part 71 on the release key 7 is provided with a protruding rod part 72, and the protruding rod part 72 is provided with a clamping groove part;

most importantly, the latch portion 63 on the connecting rod portion of the closure key 6 snap-fits with the latch portion on the protruding rod portion 72 of the release key 7.

It should be noted that the closing key and the releasing key have a skillful mechanical linkage relationship, and after the closing key is pressed down, the closing key can directly close the holding shell, so that a cavity formed by the holding shell and the cylinder body is communicated to form a closed space, and at the moment, after medical staff pulls the pull rod bolt outwards, negative pressure can be formed; at the moment, if the release key is pressed, the release key triggers the closed key at the moment, so that the closed key rebounds out, the closed space is further damaged, and the negative pressure space is changed into the positive pressure space at the moment, so that the normal pressure can be recovered;

preferably, as an embodiment, the area of the elliptical cover plate portion 61 of the close key 6 is larger than the area of the circular cover plate portion 71 of the release key 7.

The size of the elliptic cover plate part of the closing key and the size of the circular cover plate part of the releasing key are designed to be proper; in a specific structure, the size of the elliptic cover plate part of the closing key can be designed to be relatively large, while the size of the circular cover plate part of the releasing key can be designed to be relatively small, so that the probability of misoperation of the releasing key is avoided.

Preferably, as an embodiment, the elliptical cover plate portion 61 of the close key 6 and the circular cover plate portion 71 of the release key 7 are always located in the concave groove 24 of the grip housing 2, and the top surface of the elliptical cover plate portion of the close key and the top surface of the circular cover plate portion of the release key are always lower than the top surface of the grip housing.

It should be noted that, a groove is provided on the top surface of the holding shell, and the groove is convenient for hiding the closing key and the releasing key. Meanwhile, the top surface of the elliptic cover plate part of the closed key and the top surface of the circular cover plate part of the release key are always lower than the top surface of the holding shell, so that the closed key and the release key can be hidden; thus, the misoperation (namely mistakenly touching the key) of the closed key and the release key can be reduced; the arrangement of the groove can effectively protect the valve key.

The relation between the limiting base and the cylinder body;

referring to fig. 10, an elliptical cylinder baffle 33 is further disposed at the bottom of the cylinder 3; the limiting base 4 is sleeved on the oval barrel baffle 33 on the barrel 3 and is fixedly connected with the barrel.

Regarding the structure of the handle:

as shown in fig. 4 and 5 (see also fig. 14 and 15), a central portion of the handle 5 is provided with a trepan 51; and an anti-slip layer 52 is arranged on the inner wall of the trepanning of the handle. The anti-skid layer is a silica gel layer.

It should be noted that the handle is provided with a trepanning convenient for medical staff to operate (namely the middle part of the handle is provided with the trepanning convenient for fingers to be sleeved in), and the trepanning is convenient for the medical staff to extend into the fingers, so that the handle can be better controlled;

meanwhile, the arrangement of the silica gel layer also increases effective contact of the handle, so that medical personnel can better control the handle; meanwhile, the size design of the trepanning is moderate, and preferably 3 fingers capable of accommodating female fingers, so that the controllability of the handle is ensured, and meanwhile, the invalid volume of the handle is reduced as much as possible.

Obviously, the dynasty emperor sucker provided by the embodiment of the invention mainly has the following technical advantages:

1. the dynasty emperor suction device provided by the embodiment of the invention has the advantages of wide adaptable range (meeting the negative pressure of the dynasty emperor suction dynasty emperor and the dynasty emperor measuring requirements of patients in different periods), high negative pressure accuracy of the dynasty emperor suction dynasty emperor, visual measurement of the negative pressure of the dynasty emperor and accurate control and adjustment of the negative pressure of the dynasty emperor suction dynasty emperor; the dynasty emperor suction device provided by the embodiment of the invention can obviously improve the operation precision, the operation effectiveness and the operation safety of the negative pressure dynasty emperor suction operation, can select a proper amount of negative pressure of dynasty emperor suction according to the requirement of a patient on dynasty emperor suction, and simultaneously ensures the safety of the negative pressure dynasty emperor suction operation through visual measurement.

2. The dynasty emperor provided by the embodiment of the invention has the technical advantages of stable and reliable negative pressure locking structure and higher safety, and after a closed cavity is formed by pressing a closed key (namely a closed valve), a pull rod bolt is forcibly pulled out and a clamping plate of the pull rod bolt is rotationally locked on a limiting base; at the moment, the dynasty emperor suction device is in the maximum dynasty emperor suction negative pressure state, the dynasty emperor suction device is locked in the negative pressure state implemented by the clamping plate and the limiting base, and the locking structure cannot be damaged basically; the negative pressure can be relieved unless medical staff intentionally rotates the clamping plate to retract in the strip-shaped opening; therefore, the dynasty emperor sucker provided by the embodiment of the invention has a reliable negative pressure locking structure and better safety performance (the problems of air embolism and the like are avoided).

3. The double-valve key of the dynasty emperor sucker provided by the embodiment of the invention is matched, and the safety and reliability are also improved; the valve with the traditional structure is easy to rebound, so that negative pressure failure is caused; however, the design of the closed key and the release key of the dynasty emperor device provided by the embodiment of the invention is more reliable (meanwhile, the design of hiding the embedded groove is adopted), and the possibility of misoperation is greatly reduced).

4. The dynasty emperor provided by the embodiment of the invention has a structure of a bendable pull rod bolt, so that the dynasty emperor is convenient for the operation of medical personnel, and the possibility of instrument pollution is reduced (namely, the dynasty emperor is prevented from being polluted by bacteria, germs and the like in the environment, and the medical and sanitary conditions of negative pressure dynasty emperor operation are ensured).

5. The dynasty emperor sucker provided by the embodiment of the invention has the technical advantages of convenient operation and control due to the structure of the holding shell and the design of the handle, strong stability of the holding shell and the like; the dynasty emperor suction device is very convenient to use, and the structural function design is perfect and reasonable.

6. The dynasty emperor suction device provided by the embodiment of the invention greatly reduces the risk of the operation, ensures the reliability of the negative pressure dynasty emperor suction operation by applying the dynasty emperor suction device, improves the safety of the operation, and avoids causing induced abortion syndrome and other complications; the negative pressure dynasty emperor suction device ensures that the negative pressure dynasty emperor suction operation is smoothly carried out after the suction tube smoothly reaches the target action part, and the whole working process is risk-free, stable and smooth.

In summary, the dynasty emperor sucker provided by the embodiment of the invention has various technical advantages, so that good social benefit, market prospect and economic benefit are certainly brought.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A uterine suction device is characterized by comprising a connecting pipe, a holding shell, a cylinder body, a limiting base and a handle which are sequentially connected from the head end to the tail end;

a piston, a piston connecting column, a clamping plate and a pull rod bolt are sequentially arranged in the cylinder body;

the top end of the piston connecting column is fixedly connected with the piston, and the bottom end of the piston connecting column is fixedly connected with the clamping plate; the top end of the pull rod bolt is connected with the bottom end rotating pin of the piston connecting column through a pin shaft, the bottom end of the pull rod bolt is fixedly connected with the handle, and the limiting base is sleeved on the outer side of the bottom of the barrel body;

wherein the limiting base is provided with a strip-shaped opening; the limiting base is specifically used for limiting and clamping the clamping plate after the clamping plate on the pull rod bolt is pulled to and penetrates through the strip-shaped opening of the limiting base;

the surface of the holding shell is also provided with a closing key and a releasing key which are matched with each other; the closing key is used for implementing locking and closing actions on a negative pressure cavity formed by the barrel; the release key is used for releasing the locking and closing action of the closing key;

and, the blocking key comprises: the cover plate part, the connecting rod part and the clamping tongue part; the bottom of the cover plate part of the closed key is provided with the connecting rod part, and the connecting rod part is provided with the clamping tongue part; the release key includes: the cover plate part, the extending rod part and the clamping groove part; the bottom of the cover plate part of the release key is provided with a protruding rod part, and a clamping groove part is arranged on the protruding rod part; and the clamping tongue part on the connecting rod part of the closed key is in snap fit with the clamping groove part on the extending rod part of the release key.

2. The uterine aspirator according to claim 1, wherein the negative pressure formed in the cylinder is at most 500mmhg and the maximum capacity of the cylinder is 70 cc.

3. The uterine aspirator according to any one of claims 1 or 2, wherein the cylinder is made of a PC injection molded part, an ABS injection molded part, a PPS injection molded part or a PEEK injection molded part.

4. The uterine suction device according to claim 1,

the bottom of barrel still is provided with oval barrel baffle, spacing base cup joints fixed connection on the oval barrel baffle on the barrel.

5. The uterine suction device according to claim 1,

a stop groove is also arranged on the circumferential wall at the top end of the connecting pipe; the stop groove is used for limiting and clamping the suction tube, and the stop groove is also used for marking the relative position of the suction tube sleeved in the connecting tube.

6. The uterine suction device according to claim 5,

the stop groove and the inclined plane protruding from the rear part of the stop groove can increase the contact area with the suction tube so as to limit the suction tube.

7. The uterine suction device according to claim 1,

the holding shell specifically comprises a left holding shell and a right holding shell; the left holding shell and the right holding shell are detachably connected with each other to form a closed holding shell;

the outer surface of the holding shell is also provided with anti-skid concave grains; the anti-slip concave lines are respectively arranged on the outer side surface of the left holding shell and the outer side surface of the right holding shell.

8. The uterine suction device according to claim 7,

the holding shell is specifically a PC engineering injection molding or an ABS engineering injection molding.