CN215194116U

CN215194116U - Ascites continuous aspirator with puncture needle hiding and disinfecting functions

Info

Publication number: CN215194116U
Application number: CN201921725152.2U
Authority: CN
Inventors: 金灿辉; 王爱红; 田晓予; 王盈; 贾萌萌
Original assignee: South China Hospital Affiliated To Shenzhen University
Current assignee: South China Hospital Affiliated To Shenzhen University
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2021-12-17
Anticipated expiration: 2029-10-15

Abstract

The ascites continuous aspirator comprises an aspirator main box body, wherein a liquid collecting bottle and a negative pressure machine are arranged in the aspirator main box body, one end of a hard connecting pipe penetrates through a sealing cover to be inserted into the liquid collecting bottle, the other end of the hard connecting pipe is connected with a hard needle head hiding disinfection pipe through a drainage hose, a puncture needle is arranged in the inner cavity of the hard needle head hiding disinfection pipe, and the puncture needle can axially move back and forth in the hard needle head hiding disinfection pipe to extend out or retract into the hard needle head hiding disinfection pipe; the front end of the inner cavity of the hard needle head hidden disinfection tube is provided with a disinfection device, and the puncture needle is disinfected by the disinfection device in the front and back moving processes; the outer part of the hard needle head hidden disinfection tube is hermetically sleeved with a sealing outer sleeve. The flexible function of the puncture needle realizes the self-protection function, realizes the quick disinfection function of the aspirator on the puncture needle, and improves the medical and sanitary level of the aspirator; moreover, all components of the aspirator are combined, integrated and convenient to carry, store and take.

Description

Ascites continuous aspirator with puncture needle hiding and disinfecting functions

Technical Field

The utility model belongs to the technical field of ascites aspirator, in particular to an ascites continuous aspirator with puncture needle hiding and disinfecting functions.

Background

In clinical practice, patients with liver diseases often have liver ascites, and the aspiration of the liver ascites is an effective treatment method. The current ascites pumping method is to pump the ascites by means of an ascites pump or syringe, penetrate into the abdominal cavity by means of a puncture needle, and then pump by means of a pump or syringe. The current ascites aspirator is simple in structure and single in function, the puncture needle is directly exposed outside and sleeved by a simple needle sleeve at most, the aspirator is not provided with a disinfection device, the puncture needle cannot be disinfected timely, and medical sanitation is inconvenient to implement. There is therefore a need for improvements.

SUMMERY OF THE UTILITY MODEL

This novel technical problem who solves: the ascites continuous aspirator with the puncture needle hiding and disinfecting function is provided, the flexible function of the puncture needle realizes the self-protection function of the aspirator on the puncture needle, the puncture needle is disinfected by the disinfecting device in the front and back moving process, the rapid disinfection function of the aspirator on the puncture needle is realized, and the medical and sanitary level of the aspirator is improved; moreover, all components of the aspirator are combined, integrated and convenient to carry, store and take.

This novel technical scheme who adopts: the ascites continuous aspirator with the puncture needle hiding and disinfecting function comprises an aspirator main box body, wherein a liquid collecting bottle and a negative pressure machine are arranged in the aspirator main box body, the opening of the liquid collecting bottle is covered by a sealing cover, the sealing cover is provided with a vent pipe and a hard connecting pipe, one end of the hard connecting pipe penetrates through the sealing cover to be inserted into the liquid collecting bottle, the hard connecting pipe is connected with the negative pressure machine through a connector, the other end of the hard connecting pipe is connected with the hard needle head hiding disinfection pipe through a drainage hose, a puncture needle is arranged in the inner cavity of the hard needle head hiding disinfection pipe, the puncture needle can move forwards in the hard needle head hiding disinfection tube in the axial direction and then lock the position after extending out of the hard needle head hiding disinfection tube to realize the puncture use of the puncture needle, the puncture needle can move backwards in the axial direction of the hard needle head hiding disinfection tube and is locked in position to hide the puncture needle; the front end of the inner cavity of the hard needle head hidden disinfection tube is provided with a disinfection device, and the puncture needle is disinfected by the disinfection device in the front and back moving processes; the outer sealing sleeve is sleeved on the outer sealing sleeve of the hard needle head hiding disinfection tube, and the sealing sleeve can move axially along the outer surface of the hard needle head hiding disinfection tube to realize sealing shielding and opening of the puncture needle mounting part on the hard needle head hiding disinfection tube.

To above-mentioned technical scheme's preferred mode, the axial displacement and the preceding back limit structure implementation mode of pjncture needle in the disinfection pipe is hidden to the stereoplasm syringe needle: the utility model discloses a hidden disinfection tube of stereoplasm syringe needle, including the hidden disinfection tube of stereoplasm syringe needle, the anterior wall of hidden disinfection tube of stereoplasm syringe needle is equipped with the spout axially, draw-in groove and back draw-in groove before being equipped with on the hidden disinfection tube inner wall of stereoplasm syringe needle that the spout is anterior and the rear portion corresponds, the stereoplasm syringe needle hides the disinfection tube inner wall and is equipped with the needle file in the cavity, pjncture needle rear end and needle file fixed connection, the outer disc of needle file hides disinfection tube inner surface adaptation with the stereoplasm syringe needle, the outer disc of needle file corresponds position department and is equipped with the slider mounting groove, and the slider mounting groove is passed through to the spring mounting in the limiting slide bottom, limiting slide is including promoting slider and limiting slide I, promote the slider and arrange in the spout and the outer disc of the hidden disinfection tube of stereoplasm syringe needle and can realize the position locking to the puncture needle in preceding draw-in groove or the back draw-in groove through the effect card of spring, and pressing the pushing slide block to enable the limiting slide block I to exit from the front clamping groove or the rear clamping groove and push the pushing slide block to drive the needle base and the puncture needle to move axially back and forth through the limiting slide block I.

To above-mentioned technical scheme's preferred mode, be equipped with the external screw thread on the outer circle face of the stereoplasm syringe needle that the spout front end corresponds hides disinfection tube, the external screw thread is gone up to close soon and is gone up the compressing tightly swivel nut that compresses tightly to the anterior promotion slider that moves the spout.

To above-mentioned technical scheme's preferred mode, degassing unit hides the anterior disinfection chamber in disinfection tube inner chamber including locating the stereoplasm syringe needle, the disinfection chamber center is equipped with the disinfection hole that supplies the pjncture needle to pass, disinfection intracavity intussuseption is full of the aseptic cotton, the stereoplasm syringe needle that disinfection chamber corresponds is hidden and is equipped with the antiseptic solution filling opening on the disinfection tube wall, the antiseptic solution filling opening is plugged up through blocking up the seal.

To above-mentioned technical scheme's preferred mode, the sealed outer tube hides the axial displacement and the sealed structure implementation mode that covers of outer surface of disinfection tube at the stereoplasm syringe needle: the sealing outer sleeve is slidably sleeved outside the hard needle head hiding disinfection tube, a rear limiting ring is arranged on the outer circular surface of the hard needle head hiding disinfection tube corresponding to the rear part of the chute, a front limiting lock ring is arranged on the outer circular surface of the hard needle head hiding disinfection tube corresponding to the front part of the chute, the rear end of the sealing outer sleeve radially extends inwards to form a rear limiting sliding table, the rear limiting sliding table is matched with the outer circular surface of the hard needle head hiding disinfection tube, the front end of the sealing outer sleeve radially extends inwards to form a front limiting sliding table, the inner diameter of the front limiting sliding table is larger than the outer diameter of the pushing sliding block in an elastic loosening state, and the inner diameter of the front limiting sliding table is smaller than the outer diameter of the rear limiting ring; when the sealing outer sleeve axially slides to hide the hard needle head in the disinfection tube and shield the puncture needle mounting part, the inner side surface of the rear limiting sliding table of the sealing outer sleeve is tightly attached to the rear limiting ring and sealed by the rear sealing gasket, and the outer side surface of the front limiting sliding table of the sealing outer sleeve is clamped with the front limiting lock ring by the buckle and sealed by the front sealing gasket on the binding surface.

In a preferable mode of the technical scheme, a protective cover for protecting the skin part of the human body punctured by the puncture needle is arranged at the front end of the hard needle head hidden disinfection tube, and a suction ring is arranged on the periphery of the protective cover contacting with the skin of the human body.

In a preferable mode of the technical scheme, an inner cavity of the aspirator main box body is divided into an upper storing cavity and a lower installing cavity, the upper storing cavity is used for storing the hard needle head hiding disinfection tube and the puncture needle, and a liquid collecting bottle and a negative pressure machine are arranged in the lower installing cavity; the liquid collecting bottle bottom is equipped with the fluid-discharge tube that stretches to the outside of aspirator main tank body, be equipped with the flowing back valve on the fluid-discharge tube, be equipped with the scale on the liquid collecting bottle, be equipped with manometer and regulating switch on the negative pressure machine, it exposes scale, manometer and regulating switch in outside opening to be equipped with corresponding position department on the aspirator main tank body wall, the inside check valve that is equipped with of stereoplasm connecting pipe, the breather pipe passes aspirator main tank body wall and places in the outside.

This novel advantage compared with prior art:

1. in the scheme, the puncture needle can move forwards in the hard needle head hiding and disinfecting tube axially to extend out of the hard needle head hiding and disinfecting tube and then is locked in position to realize puncture use of the puncture needle, and the puncture needle can move backwards in the hard needle head hiding and disinfecting tube axially and is locked in position to realize hiding of the puncture needle; the puncture needle has the advantages that the puncture needle has the telescopic function, extends out when in use, retracts and hides when not in use, and the self-protection function of the air extractor on the puncture needle is realized; the disinfection device is arranged at the front end of the inner cavity of the hard needle head hidden disinfection tube, and the puncture needle is disinfected by the disinfection device in the front and back moving processes, so that the rapid disinfection effect of the aspirator on the puncture needle is realized, and the medical and sanitary level of the aspirator is improved;

2. according to the scheme, the sealing outer sleeve is sleeved outside the hard needle head hiding disinfection tube in a sealing manner, and can axially move along the outer surface of the hard needle head hiding disinfection tube, so that the mounting part of the puncture needle on the hard needle head hiding disinfection tube is sealed and shielded and opened, and the hard needle head hiding disinfection tube cannot leak in the suction process;

3. this scheme adopts the aspirator main tank body that upper portion received and deposited chamber and lower part installation cavity and constitute, makes each parts combination of aspirator integrate, and the aspirator is wholeization, carries to receive and deposits more conveniently.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of the mounting structure of the novel mid-puncture needle in the hard needle head hidden disinfection tube;

FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2;

fig. 4 is an enlarged schematic view of the part B in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. The connection modes of the components in the following embodiments are all conventional connection modes unless otherwise specified; the components used in the following examples are commercially available unless otherwise specified.

In the present invention, without going to the contrary, it is understood that: the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements 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" and "second" 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 is to be noted that the terms "mounted," "connected," "disposed," and "provided" are to be construed broadly unless otherwise specifically stated or limited. For example, the connecting and arranging can be fixed, or can be detachable, or integrally connected and arranged. May be a mechanical connection; may be directly connected or may be indirectly connected through other intermediate members. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, an embodiment of the present invention is described,

ascites continuous suction ware with disinfection function is hidden to pjncture needle, including aspirator main tank 1, 1 inside liquid collecting bottle 2 and the negative pressure machine 11 of being equipped with of aspirator main tank, 2 openings of liquid collecting bottle close through sealed 3 lids, sealed 3 last breather pipes 4 and the stereoplasm connecting pipe 8 of being equipped with of covering, breather pipe 4 passes 1 wall of aspirator main tank and puts in the outside, 8 one end of stereoplasm connecting pipe are passed sealed 3 and are inserted in liquid collecting bottle 2, be connected with negative pressure machine 11 through connector 12 on the stereoplasm connecting pipe 8, the stereoplasm connecting pipe 8 other end is passed through drainage hose 10 and is hidden the disinfection pipe 15 with the stereoplasm syringe needle and be connected.

Be equipped with pjncture needle 16 in the 15 inner chambers of disinfection pipes are hidden to the stereoplasm syringe needle, pjncture needle 16 can move forward in the 15 pipes of disinfection are hidden to the stereoplasm syringe needle and stretch out and carry out position locking behind the disinfection pipes are hidden to the stereoplasm syringe needle and realize pjncture needle 16's puncture use, pjncture needle 16 can move backward and carry out position locking in the 15 pipes of disinfection are hidden to the stereoplasm syringe needle and realize hiding puncture needle 16, has realized the flexible function of pjncture needle 16, stretches out during the use, and the indentation is hidden when not using, has realized the self safeguard function of aspirator to puncture needle. Specifically, the axial movement and the front and rear limiting structure of the puncture needle 16 in the hard needle head hiding and disinfecting tube 15 are realized as follows: a sliding groove 1501 is axially arranged on the front wall of the hard needle hiding disinfection tube 15, a front clamping groove 1503 and a rear clamping groove 1502 are arranged on the inner wall of the hard needle hiding disinfection tube 15 corresponding to the front and rear parts of the sliding groove 1501, a needle seat 17 is arranged in the inner cavity of the hard needle hiding disinfection tube 15 in a sliding manner, the rear end of the puncture needle 16 is fixedly connected with the needle seat 17, the outer circular surface of the needle seat 17 is matched with the inner surface of the hard needle hiding disinfection tube 15, a slider mounting groove 1701 is arranged at the position corresponding to the outer circular surface of the needle seat 17, the bottom of a limiting slider 18 is arranged in the slider mounting groove 1701 through a spring 19, the limiting slider 18 comprises a pushing slider 1802 and a limiting slider I1801, the pushing slider 1802 is arranged in the sliding groove 1501 and protrudes out the outer circular surface of the hard needle hiding disinfection tube 15 and can move along the axial direction of the sliding groove 1501, and the limiting slider I1801 is arranged in the slider mounting groove 1701, the limiting slider I1801 is clamped into the front clamping groove 1503 or the rear clamping groove 1502 through the action of the spring 19 to realize the position locking of the puncture needle 16. When the puncture needle is used, the pushing slide block 1802 is pressed by hand, so that the limiting slide block I1801 is withdrawn from the front clamping groove 1503 or the rear clamping groove 1502, the pushing slide block 1802 is pushed by hand, and the pushing slide block 1802 drives the needle seat 17 and the puncture needle 16 to move axially back and forth through the limiting slide block I1801. An external thread 1504 is arranged on the outer circular surface of the hard needle hiding and disinfecting tube 15 corresponding to the front end of the sliding chute 1501, and a pressing threaded sleeve 20 for pressing a pushing slide block 1802 moving to the front part of the sliding chute 1501 is screwed on the external thread 1504, so that the extended puncture needle 16 is stably and reliably fixed.

The front end of the inner cavity of the hard needle head hiding disinfection tube 15 is provided with a disinfection device, and the puncture needle 16 is disinfected by the disinfection device in the front and back moving processes. The disinfection device comprises a disinfection cavity 21 arranged at the front part of the inner cavity of the hard needle head hiding disinfection tube 15, a disinfection hole 22 for a puncture needle 16 to penetrate through is arranged at the center of the disinfection cavity 21, disinfection cotton 23 is filled in the disinfection cavity 21, a disinfection liquid injection port 1505 is arranged on the wall of the hard needle head hiding disinfection tube 15 corresponding to the disinfection cavity 21, and the disinfection liquid injection port 1505 is sealed and blocked through a plug 32. The puncture needle 16 is disinfected by the disinfection device in the process of moving back and forth, so that the rapid disinfection effect of the aspirator on the puncture needle is realized, and the medical and sanitary level of the aspirator is improved.

The outer part of the hard needle head hiding disinfection tube 15 is hermetically sleeved with a sealing outer sleeve 26, and the sealing outer sleeve 26 can axially move along the outer surface of the hard needle head hiding disinfection tube 15 to realize the sealing shielding and opening of the mounting part of the puncture needle 16 on the hard needle head hiding disinfection tube 15. The axial movement of the sealing outer sleeve 26 on the outer surface of the hard needle head hiding disinfection tube 15 and the sealing covering structure are realized in the following way: the sealing outer sleeve 26 is slidably sleeved outside the hard needle hiding and disinfecting tube 15, a rear limiting ring 27 is arranged on the outer circular surface of the hard needle hiding and disinfecting tube 15 corresponding to the rear part of the chute 1501, a front limiting locking ring 29 is arranged on the outer circular surface of the hard needle hiding and disinfecting tube 15 corresponding to the front part of the chute 1501, the rear end of the sealing outer sleeve 26 extends radially inwards to form a rear limiting sliding table 2601, the rear limiting sliding table 2601 is matched with the outer circular surface of the hard needle hiding and disinfecting tube 15, the front end of the sealing outer sleeve 26 extends radially inwards to form a front limiting sliding table 2602, the inner diameter of the front limiting sliding table 2602 is larger than the outer diameter of the pushing slide 1802 in an elastic loosening state, and the inner diameter of the front limiting sliding table 2602 is smaller than the outer diameter of the rear limiting ring 27; when the sealing outer sleeve 26 axially slides to shield the mounting part of the puncture needle 16 on the hard needle head hiding and disinfecting tube 15, the inner side surface of the rear limiting sliding table 2601 of the sealing outer sleeve 26 is tightly attached to the rear limiting ring 27 and sealed by the rear sealing gasket 28, the outer side surface of the front limiting sliding table 2602 of the sealing outer sleeve 26 is clamped with the front limiting locking ring 29 by the buckle 30, and the attaching surface is sealed by the front sealing gasket 31. The provision of the sealing sleeve 26 provides for sealing shielding and opening of the mounting portion of the needle 16 on the rigid needle hider sterile tube 15 so that the rigid needle hider sterile tube does not leak during aspiration.

The front end of the hard needle head hiding and disinfecting tube 15 is provided with a protective cover 24 which protects the skin part punctured by the puncture needle 16, and in the puncturing process, the protective cover 24 protects the punctured skin part to prevent the needle eye from being exposed to the outside to cause infection. The suction ring 25 is arranged on the periphery of the protective cover 24, which is in contact with the skin of a human body, when puncture and suction are carried out, the suction ring 25 is used for sucking the skin of the human body to fix the position of the puncture needle, so that the puncture needle is stable and reliable in the process of suction, and the pain of the patient caused by ascites suction is reduced.

The inner cavity of the aspirator main box body 1 is divided into an upper receiving cavity 102 and a lower mounting cavity 101, the upper receiving cavity 102 is used for receiving and storing a hard needle hiding and disinfecting tube 15 and a puncture needle 16, and a liquid collecting bottle 2 and a negative pressure machine 11 are arranged in the lower mounting cavity 101; the liquid collecting bottle 2 is provided with a liquid discharge pipe 6 extending to the outside of the aspirator main box body 1 at the bottom, a liquid discharge valve 7 is arranged on the liquid discharge pipe 6, a graduated scale 5 is arranged on the liquid collecting bottle 2, a pressure gauge 13 and an adjusting switch 14 are arranged on the negative pressure machine 11, an opening exposing the graduated scale 5, the pressure gauge 13 and the adjusting switch 14 to the outside is arranged at a position corresponding to the wall of the aspirator main box body 1, and a one-way valve 9 is arranged inside the hard connecting pipe 8. This scheme adopts the aspirator main tank body 1 that upper portion storage cavity 102 and lower part installation cavity 101 are constituteed, makes the combination of aspirator each parts integrate, and the aspirator is wholeization, carries to receive and deposits more conveniently.

It is obvious to a person skilled in the art that the present invention is not restricted to details of the above-described exemplary embodiments, but that it can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Ascites continuous suction ware with disinfection function is hidden to pjncture needle, including aspirator main tank body (1), aspirator main tank body (1) inside is equipped with collector bottle (2) and negative pressure machine (11), collector bottle (2) opening closes through sealed lid (3) lid, be equipped with breather pipe (4) and stereoplasm connecting pipe (8) on sealed lid (3), stereoplasm connecting pipe (8) one end is passed sealed lid (3) and is inserted in collector bottle (2), be connected its characterized in that through connector (12) and negative pressure machine (11) on stereoplasm connecting pipe (8): the other end of the hard connecting pipe (8) is connected with a hard needle head hiding and disinfecting pipe (15) through a drainage hose (10), a puncture needle (16) is arranged in the inner cavity of the hard needle head hiding and disinfecting pipe (15), the puncture needle (16) can move forwards in the hard needle head hiding and disinfecting pipe (15) in the axial direction and extend out of the hard needle head hiding and disinfecting pipe (15) to be locked in position to realize puncture use of the puncture needle (16), and the puncture needle (16) can move backwards in the hard needle head hiding and disinfecting pipe (15) in the axial direction and can be locked in position to realize hiding of the puncture needle (16); the front end of the inner cavity of the hard needle head hiding disinfection tube (15) is provided with a disinfection device, and the puncture needle (16) is disinfected by the disinfection device in the front and back moving processes; a sealing outer sleeve (26) is sleeved outside the hard needle head hiding disinfection tube (15) in a sealing manner, and the sealing outer sleeve (26) can axially move along the outer surface of the hard needle head hiding disinfection tube (15) to realize sealing shielding and opening of the mounting part of the puncture needle (16) on the hard needle head hiding disinfection tube (15);

the disinfection device is including locating anterior disinfection chamber (21) of stereoplasm syringe needle hiding disinfection pipe (15) inner chamber, disinfection chamber (21) center is equipped with disinfection hole (22) that supply pjncture needle (16) to pass, disinfection chamber (21) intussuseption is full of aseptic cotton (23), be equipped with antiseptic solution filling opening (1505) on the stereoplasm syringe needle hiding disinfection pipe (15) wall that disinfection chamber (21) correspond, antiseptic solution filling opening (1505) are sealed up through blockking up (32).

2. The ascites continuous aspirator having a puncture needle concealing and sterilizing function according to claim 1, wherein: the puncture needle (16) is axially moved in the hard needle head hidden disinfection tube (15) and the implementation mode of the front and back limiting structures is as follows: a sliding groove (1501) is axially arranged on the wall of the front part of the hard needle hiding disinfection tube (15), a front clamping groove (1503) and a rear clamping groove (1502) are arranged on the inner wall of the hard needle hiding disinfection tube (15) corresponding to the front part and the rear part of the sliding groove (1501), a needle seat (17) is arranged in the inner cavity of the hard needle hiding disinfection tube (15) in a sliding manner, the rear end of the puncture needle (16) is fixedly connected with the needle seat (17), the outer circular surface of the needle seat (17) is matched with the inner surface of the hard needle hiding disinfection tube (15), a slider mounting groove (1701) is arranged at the position corresponding to the outer circular surface of the needle seat (17), the bottom of a limiting slider (18) is mounted in the slider mounting groove (1701) through a spring (19), the limiting slider (18) comprises a pushing slider (1802) and a limiting slider (1501I (1801), the pushing slider (1802) is arranged in the sliding groove (1501) and protrudes out of the outer circular surface of the hard needle hiding disinfection tube (15) and can axially move along the sliding groove (1501), the limiting sliding block I (1801) is arranged in the sliding block mounting groove (1701), the limiting sliding block I (1801) is clamped into the front clamping groove (1503) or the rear clamping groove (1502) through the action of the spring (19) to achieve position locking of the puncture needle (16), the pushing sliding block (1802) is pressed to enable the limiting sliding block I (1801) to exit from the front clamping groove (1503) or the rear clamping groove (1502) and push the pushing sliding block (1802) to drive the needle seat (17) and the puncture needle (16) to move axially back and forth through the limiting sliding block I (1801).

3. The ascites continuous aspirator having a puncture needle concealing and sterilizing function according to claim 2, wherein: the outer circle face of the hard needle hiding disinfection tube (15) corresponding to the front end of the sliding groove (1501) is provided with an external thread (1504), and the external thread (1504) is screwed with a pressing threaded sleeve (20) for pressing a pushing slide block (1802) moving to the front part of the sliding groove (1501).

4. The ascites continuous aspirator having a puncture needle concealing and sterilizing function according to claim 2, wherein: the sealing outer sleeve (26) can axially move on the outer surface of the hard needle head hiding disinfection tube (15) and can realize a sealing covering structure: the sealing outer sleeve (26) is slidably sleeved outside the hard needle head hiding and disinfecting tube (15), a rear limiting ring (27) is arranged on the outer circular surface of the hard needle head hiding and disinfecting tube (15) corresponding to the rear part of the sliding chute (1501), a front limiting locking ring (29) is arranged on the outer circular surface of the hard needle head hiding and disinfecting tube (15) corresponding to the front part of the sliding chute (1501), the rear end of the sealing outer sleeve (26) radially extends inwards to form a rear limiting sliding table (2601), the rear limiting sliding table (2601) is matched with the outer circular surface of the hard needle head hiding and disinfecting tube (15), the front end of the sealing outer sleeve (26) radially extends inwards to form a front limiting sliding table (2602), the inner diameter of the front limiting sliding table (2602) is larger than the outer diameter of the pushing slide block (1802) in an elastic loosening state, and the inner diameter of the front limiting sliding table (2602) is smaller than the outer diameter of the rear limiting ring (27); when the sealing outer sleeve (26) axially slides to shield the mounting part of the puncture needle (16) on the hard needle head hiding and disinfecting tube (15), the inner side surface of the rear limiting sliding table (2601) of the sealing outer sleeve (26) is tightly attached to the rear limiting ring (27) and is sealed by the rear sealing gasket (28), the outer side surface of the front limiting sliding table (2602) of the sealing outer sleeve (26) is clamped with the front limiting locking ring (29) by the buckle (30) and is sealed by the front sealing gasket (31) on the attaching surface.

5. The ascites continuous aspirator having a puncture needle concealing and sterilizing function according to claim 1, wherein: the front end of the hard needle head hiding disinfection tube (15) is provided with a protective cover (24) which protects the skin part punctured by the puncture needle (16), and a suction ring (25) is arranged on the periphery of the protective cover (24) contacted with the skin of the human body.

6. The ascites continuous aspirator having a puncture needle concealing and sterilizing function according to claim 1, wherein: the inner cavity of the aspirator main box body (1) is divided into an upper storage cavity (102) and a lower installation cavity (101), the upper storage cavity (102) is used for storing a hard needle hiding and disinfecting tube (15) and a puncture needle (16), and a liquid collecting bottle (2) and a negative pressure machine (11) are arranged in the lower installation cavity (101); liquid collecting bottle (2) bottom is equipped with and stretches to outside fluid-discharge tube (6) of aspirator main tank body (1), be equipped with flowing back valve (7) on fluid-discharge tube (6), be equipped with scale (5) on liquid collecting bottle (2), be equipped with manometer (13) and regulating switch (14) on negative pressure machine (11), it is equipped with scale (5), manometer (13) and regulating switch (14) and exposes in outside opening to correspond position department on aspirator main tank body (1) wall, stereoplasm connecting pipe (8) inside is equipped with check valve (9), breather pipe (4) pass aspirator main tank body (1) wall and put in the outside.