CN115154690A

CN115154690A - Medical suction device

Info

Publication number: CN115154690A
Application number: CN202210783644.7A
Authority: CN
Inventors: 王建雄; 曾达; 官小秋; 蔡国雄
Original assignee: Double Medical Technology Inc
Current assignee: Double Medical Technology Inc
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-10-11

Abstract

The application relates to the technical field of medical equipment, concretely relates to medical suction device, include: a first aspiration device, a second aspiration device, a multi-circuit assembly, and a piercing member; the multi-loop control assembly at least comprises a first pipeline and a second pipeline which are communicated; the suction end of the first pipeline is communicated with the puncture piece, the output end of the first pipeline is respectively communicated with the suction end of the second pipeline and the suction end of the second suction device, and the output end of the second pipeline is communicated with the first suction device; the puncture element is used for sucking the target fluid, and the target fluid flows to the first suction device along the first pipeline and the second pipeline or flows to the first suction device along the first pipeline, the second suction device and the second pipeline. This application has realized that the suction is controllable through setting up a plurality of suction device, need not maintain the negative pressure with the hand for a long time when the suction simultaneously, alleviates medical staff fatigue, easy operation.

Description

Medical suction device

Technical Field

The application relates to the technical field of medical equipment, in particular to a medical suction device.

Background

In modern medicine, various clinical diseases are usually treated by pumping fluid from the human body. Such as the extraction of bone marrow Blood (BMAC), which contains not only platelets but also stem cells with significant anti-inflammatory properties and which can affect other cells involved in inflammation and healing, as well as a variety of other cells, which have the ability to become other types of cells and have been demonstrated and increasingly used in the clinic for a variety of diseases. If bone marrow blood is combined with functional matrix and transplanted into soft tissue injury or bone defect, healing of injured soft tissue, bone defect or fracture broken end can be promoted, and clinical result is in positive correlation with the number of fibroblast colony generating units (cfu-f) in the transplant. However, the existing suction device can not realize controllable suction, and meanwhile, medical staff often have hand pain and fatigue caused by long-time negative pressure maintenance during suction. Accordingly, there is a need for an improved medical suction device that addresses the above-mentioned problems in the prior art.

Disclosure of Invention

In view of the above problems of the prior art, the present application discloses a medical suction device capable of extracting high-quality bone marrow blood and reducing fatigue of medical staff.

The application is realized by the following technical scheme:

the application provides a medical suction device, includes: a first aspiration device, a second aspiration device, a multi-circuit assembly, and a piercing member;

the multi-loop control assembly at least comprises a first pipeline and a second pipeline which are communicated;

the suction end of the first pipeline is communicated with the puncture piece, the output end of the first pipeline is respectively communicated with the suction end of the second pipeline and the suction end of the second suction device, and the output end of the second pipeline is communicated with the first suction device;

the puncture element is used for sucking in a target fluid, and the target fluid flows to the first suction device along the first pipeline and the second pipeline, or the target fluid flows to the first suction device along the first pipeline, the second suction device and the second pipeline.

Further, a first one-way valve is arranged in the first pipeline, and an opening of the first one-way valve faces to the side far away from the puncture piece;

and a second one-way valve is arranged in the second pipeline, and the opening of the second one-way valve faces to one side close to the first suction device.

Further, the first suction device comprises a suction core bar and a fluid containing cylinder, the suction core bar is connected with the fluid containing cylinder in a sliding mode, and the suction core bar can reciprocate along the inner wall of the fluid containing cylinder;

the suction end of the fluid containing cylinder is communicated with the second pipeline;

the suction core rod is provided with at least one clamping structure, and one end of the fluid containing cylinder, which is far away from the second pipeline, is provided with a buckle matched with the clamping structure.

Further, the piercing member comprises a piercing end;

the piercing end is sequentially provided with a first cutting surface, a second cutting surface, a third cutting surface and a fourth cutting surface;

the first cutting surface and the piercing member have different surface angles in the longitudinal direction, the second cutting surface and the piercing member have different surface angles in the longitudinal direction, the first cutting surface and the piercing member have the same surface angle in the longitudinal direction as the third cutting surface, and the second cutting surface and the piercing member have the same surface angle in the longitudinal direction as the fourth cutting surface and the piercing member.

Further, the second suction device comprises a pressurizing piece, a reset elastic piece and a storage cavity;

the storage cavity is respectively communicated with the first pipeline and the second pipeline;

the pressurizing piece is connected with the inner wall of the storage cavity in a sealing way and can reciprocate along the inner wall of the storage cavity;

one end of the reset elastic piece is abutted against the pressurizing piece, and the elastic direction of the reset elastic piece is the same as the reset movement direction of the pressurizing piece.

Further, the puncture end of the puncture piece is provided with a spiral structure, a three-dimensional suction hole is formed in the spiral structure and communicated with the first pipeline, and the three-dimensional suction hole is used for sucking target fluid.

Furthermore, the side wall of the puncture end is also provided with at least one side wall suction hole, and the opening direction of the side wall suction hole is different from that of the three-dimensional suction hole.

Further, the spiral structure includes at least two spiral grooves, and a depth of a depression in the spiral grooves is higher than a depth of a depression in an outer periphery of the spiral grooves.

Further, one end, far away from the first pipeline, of the puncture piece is provided with a thread structure, and the thread structure is adjacent to the spiral structure.

Further, the device also comprises a handle;

the handle is fixedly connected with the multi-loop assembly.

Adopt above-mentioned technical scheme, the medical suction device that this application disclosed has following beneficial effect:

this application has realized that the suction is controllable through setting up a plurality of suction devices, need not maintain the negative pressure with the hand for a long time when the suction simultaneously, alleviates medical staff fatigue, easy operation.

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a medical suction device according to an embodiment of the present application;

fig. 2 is a detailed view of a first suction device according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a first pumping device according to an embodiment of the present application;

fig. 4 is a schematic structural view of a clamping structure according to an embodiment of the present disclosure in clamping with a buckle;

FIG. 5 is a schematic structural view of a clamping structure and a buckle according to an embodiment of the present disclosure in a non-clamping state;

fig. 6 is a schematic structural view of a second suction device according to an embodiment of the present application;

FIG. 7 is a schematic view of the piercing end of a piercing member according to an embodiment of the present application;

FIG. 8 is a schematic view of the piercing end of a piercing member according to an embodiment of the present application;

FIG. 9 is a bottom view of the piercing end of a piercing member according to embodiments of the present application;

fig. 10 is a schematic view of the piercing end of the piercing member according to an embodiment of the present application.

Wherein the reference numbers in the figures correspond to: 1-a first suction device; 2-a second suction device; 3-a multi-loop assembly; 4-a piercing member; 11-a suction core rod; 12-a fluid containment cartridge; 13-a clamping structure; 14-buckling; 21-a pressing member; 22-a return spring; 23-a storage chamber; 31-a first conduit; 32-a second conduit; 33-a third line; 34-a first one-way valve; 35-a second one-way valve; 41-first cutting face; 42-a second chip surface; 43-a third chip surface; 44-a fourth chip surface; 45-helix structure; 46-a three-dimensional suction aperture; 47-sidewall suction holes; 48-thread structure; 5-a handle.

Detailed Description

The embodiment of the application discloses medical suction device has realized that the suction is controllable, need not maintain the negative pressure with the hand for a long time when the suction simultaneously, alleviates medical staff fatigue, easy operation.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that in the description of the present application, it is to be understood that the orientation or positional relationship indicated by the term "side" or the like is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the components referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present application provides a medical suction device, please refer to fig. 1-10, comprising: a first suction device 1, a second suction device 2, a multi-circuit assembly 3 and a piercing member 4; the multi-circuit control assembly 3 comprises at least a first 31 and a second 32 circuit in communication; the suction end of the first pipeline 31 is communicated with the puncture piece 4, the output end of the first pipeline 31 is respectively communicated with the suction end of the second pipeline 32 and the suction end of the second suction device 2, and the output end of the second pipeline 32 is communicated with the first suction device 1; the puncturing member 4 is used for sucking in a target fluid which flows along the first and

second piping lines

31 and 32 to the first suction device 1, or the target fluid flows along the first and

second piping lines

31, 2 and 32 to the first suction device 1.

This application is through setting up multiloop control assembly 3 respectively with a plurality of suction device and puncture piece 4 intercommunications, and the suction is controllable to the multiple suction mode realization of accessible, need not maintain the negative pressure with the hand for a long time when the suction simultaneously, alleviates medical staff fatigue, easy operation.

The application provides a medical suction device includes constant voltage suction mode and vary voltage suction mode, and wherein, the vary voltage suction mode is: the first suction device 1, the multi-loop component 3 and the puncture piece 4 are used for suction, in the suction process, negative pressure is provided by the first suction device 1, and the suction target fluid sequentially passes through the puncture piece 4 and the multi-loop control component 3 and then reaches the first suction device 1, so that variable pressure suction is completed; the constant pressure pumping mode is as follows: the second suction device 2, the first suction device 1, the multi-circuit module 3 and the puncture piece 4 are used for suction, negative pressure is provided by the second suction device 1 in the suction process, and the suction target fluid sequentially passes through the puncture piece 4, the multi-circuit control module 3 and the second suction device 2 to reach the first suction device 1, so that constant-pressure suction is completed. It should be noted that, during constant pressure suction, the second suction device 2 provides negative pressure for single compression and single constant pressure quantitative suction, and the present application can be adapted to various operation types and complex operation environments in a practical manner by two suction modes or a combination thereof.

In a preferred embodiment, the multi-circuit control assembly 3 further comprises a third pipeline 33, one end of the third pipeline 33 is communicated with the second suction device 2, and the other end of the third pipeline 33 is respectively communicated with the output end of the first pipeline 31 and the suction end of the second pipeline 32; the puncturing member 4 sucks a target fluid, and the target fluid flows through the first line 31, the third line 33, the second suction device 2, the third line 33, and the second line 32 in this order, and finally flows toward the first suction device 1.

In some embodiments, the first, second and

third conduits

31, 32, 33 constitute a claw-like structure. By providing a claw-like structure, the pumping stability of the multi-circuit control assembly 3 is improved.

In some embodiments, the inner diameter of the first pipeline 31, the inner diameter of the second pipeline 32, and the inner diameter of the third pipeline 33 may be the same, and the inner diameter of the first pipeline 31, the inner diameter of the second pipeline 32, and the inner diameter of the third pipeline 33 may also be different, which may be matched according to the target fluid to be pumped.

In some embodiments, the third conduit 33 has a conduit length that is less than or equal to the conduit length of the first conduit 31, the conduit length of the second conduit 32 or the third conduit 33.

In some embodiments, the first tube 31 and the second tube 32 can be variable-diameter tubes, the inner diameter of the first tube 31 along the direction close to the puncturing part 4 can be gradually increased, and the inner diameter of the second tube 32 along the direction far away from the first suction device 1 can be gradually decreased, so that the backflow of the target fluid during the suction process can be reduced.

In some embodiments, a first one-way valve 34 is provided in the first conduit 31, the opening of the first one-way valve 34 facing away from the piercing member 4; a second check valve 35 is provided in the second pipe 32, and the second check valve 35 opens to a side close to the first suction device 1.

The present application prevents the backflow of the target fluid during the pumping process by providing the first check valve 34 and the second check valve 35 in the first line 31 and the second line 32, respectively, for easy operation.

In practical application, the second suction device provides negative pressure for suction, the second suction device provides negative pressure during suction, the negative pressure drives the second one-way valve 34 to be in an open state, the target fluid flows into the first suction device 1 from the second suction device 2, the second suction device provides negative pressure, the negative pressure drives the first one-way valve 34 to be in an open state, and the target fluid is sucked into the second suction device through the puncture piece 4.

In some embodiments, the first suction device 1 includes a suction core bar 11 and a fluid containing cylinder 12, the suction core bar 11 is connected with the fluid containing cylinder 12 in a sliding manner, and the suction core bar 11 can reciprocate along the inner wall of the fluid containing cylinder 12; the suction end of the fluid containing barrel 12 communicates with the second conduit 32; at least one clamping structure 13 is arranged on the suction core bar 11, and a buckle 14 matched with the clamping structure 13 is arranged on one end of the fluid containing barrel 12 far away from the second pipeline 32. In particular, the first suction device 1 may be a syringe.

This application is through setting up joint structure 13 and buckle 14, and is taking out the in-process through utilizing first suction device 1 to provide the negative pressure, matches the negative pressure state of spacing fixed first suction device 1 through joint structure 13 and buckle 14, and need not maintain the negative pressure with the hand, alleviates medical staff fatigue, easy operation.

In some embodiments, a snap 14 matching the snap structure 13 may be disposed on the inner wall of the fluid containing cylinder 12, and the position is not limited, and the function of limiting the position of the suction core rod 11 can be achieved. Please refer to fig. 3-5; FIG. 3 is a schematic cross-sectional view of a first suction device; FIG. 4 is a schematic structural view of the clamping structure clamped with the buckle; fig. 5 is a schematic structural view of the clamping structure and the buckle under the condition of not clamping. It should be noted that the core rod can move smoothly in the axial direction, the latch 14 matching with the latch structure 13 is not fixed in the position-limiting structure, when the position-limiting is needed, the position-limiting function can be realized by deflecting simply in the direction perpendicular to the axial direction, and the position-limiting capability of the mechanism increases with the increase of the pressure value, that is, the suction core rod 11 can move between the two latch structures 13 under the condition that the suction core rod 11 is subjected to negative pressure with opposite latch positions.

In a preferred embodiment, 3 clamping structures 13 are provided on the suction core 11, and one end of the fluid containing cylinder 12 away from the second pipeline 32 is provided with one snap 14 matched with the clamping structure 13, so that the multi-position limitation of the suction core 11 can be realized by providing a plurality of clamping structures 13.

In some embodiments, the distance between adjacent snap features 13 may be determined based on the capacity of fluid containment drum 12, and for example, the distance between adjacent snap features 13 may be set to correspond to a 5ml capacity difference within fluid containment drum 12.

In practical application, the suction core rod 11 is drawn in a direction away from the fluid containing cylinder 12 to perform variable pressure suction, in the process of drawing the suction core rod 11, under the driving of negative pressure, the first one-way valve 34 in the first pipeline 31 and the second one-way valve 35 in the second pipeline 32 are in an open state respectively, the target fluid flows to the fluid containing cylinder 12 through the first pipeline 31 and the second pipeline 32, and after the suction core rod 11 sucks the target fluid to a target volume, the suction core rod 11 can be limited through the clamping structure 13 and the clamp 14 to keep the negative pressure state in the fluid containing cylinder 12, so that suction is completed.

In some embodiments, referring to fig. 6, the second suction device 2 includes a pressure member 21, a return elastic member 22 and a storage cavity 23; the storage chamber 23 is respectively communicated with the first pipeline 31 and the second pipeline 32; the pressurizing piece 21 is connected with the inner wall of the storage cavity 23 in a sealing way, and the pressurizing piece 21 can reciprocate along the inner wall of the storage cavity 23; one end of the return elastic member 22 abuts against the pressure member 21, and the elastic direction of the return elastic member 22 is the same as the return movement direction of the pressure member 21.

This application is mutually supported through setting up the pressure member 21 and restoring to the throne elastic component 22 and is smoked, improves the suction automation, has realized quantitative suction and has smoked controllable with the suction, has improved the rate of accuracy of suction volume.

In some embodiments, the pressure member 21 includes a piston and a pressure trigger, and the return spring 22 may be a spring.

In some embodiments, the length of return spring 22 is less than the length of storage cavity 23; the inner diameter of the return spring 22 is smaller than the inner diameter of the storage chamber 23.

In a preferred embodiment, the sum of the length of the pressing member 21 located in the storage cavity 23 and the length of the restoring elastic member 22 is equal to the length of the inner cavity of the storage cavity 23.

In one embodiment, the piston is connected to the inner wall of the storage chamber 23 in a sealing manner, and the piston can reciprocate along the inner wall of the storage chamber 23; one end of the spring abuts against the pressure member 21, and the spring force direction of the spring is the same as the return movement direction of the pressure member 21.

In practical application, under the condition that the first suction device 1 is not clamped with the clamping structure 13 and the clamp 14, the pressurizing trigger is pressed once, the piston is stressed by a force towards the spring direction, the target fluid in the storage cavity 23 is pushed to the second pipeline 32 until the first suction device, meanwhile, the piston compresses the spring, the spring rebounds after being compressed, the piston rebounds to the initial position, the rebounding force provides negative pressure to suck the target fluid from the first pipeline 31 into the storage cavity 23, the pressurizing trigger is pressed in a reciprocating mode, and the piston and the spring are matched with each other to move repeatedly to finish constant-pressure suction.

In some cases, after the variable pressure suction by the first suction device 1, some unfilled target fluid space exists in the first suction device 1, but at this time, the suction core rod of the first suction device 1 has reached the limit position, and suction cannot be performed any more, or the unfilled target fluid space is small, and now the unfilled target fluid space in the first suction device 1 can be replenished and sucked by the second suction device 1, and a small amount of target fluid is gradually replenished into the first suction device 1 by pressing the pressurizing trigger once.

In some embodiments, referring to fig. 9, the piercing member 4 includes a piercing end; the piercing end is provided with a first chip surface 41, a second chip surface 42, a third chip surface 43 and a fourth chip surface 44 in sequence; the first cutting face and the piercing member have different face angles in the longitudinal direction, the second cutting face 42 and the piercing member have the same face angle in the longitudinal direction, the third cutting face 43 and the piercing member have the same face angle in the longitudinal direction, and the second cutting face 42 and the piercing member have the same face angle in the longitudinal direction, and the fourth cutting face 44 and the piercing member have the same face angle in the longitudinal direction. The first chip surface 41, the second chip surface 42, the third chip surface 43, and the fourth chip surface 44 constitute a chip edge.

This application is through setting up the cutting face that a plurality of face angles are different on the puncture end at the puncture piece, and the reduction is piled up at suction in-process bone bits, improves the suction quality of target fluid.

In some embodiments, the first cutting surface 41 forms a larger face angle with the length of the piercing member than the second cutting surface 42 forms with the length of the piercing member, the first cutting surface forms the same face angle with the length of the piercing member as the third cutting surface 43 forms with the length of the piercing member, and the second cutting surface 42 forms the same face angle with the length of the piercing member as the fourth cutting surface 44 forms with the length of the piercing member. During the puncturing process, the rotating direction of the puncturing end is clockwise from bottom to top, namely, the puncturing end rotates along the direction of the cutting surface close to the object to be cut and the cutting surface far away from the object to be cut.

In some embodiments, the piercing end of the piercing member 4 is provided with a spiral structure 45, a three-dimensional suction hole 46 is provided at the spiral structure 45, the three-dimensional suction hole 46 is communicated with the first pipeline 31, and the three-dimensional suction hole 46 is used for sucking the target fluid.

This application is through setting up three-dimensional suction hole 46 in the helical structure 45 of piercing element, under the condition that does not influence the cutting of piercing end and attack, guarantees to suck the target fluid in each space at piercing element through three-dimensional suction hole 46, has improved the efficiency and the degree of accuracy of suction.

In some embodiments, the three-dimensional suction holes 46 are profiled holes.

In some embodiments, at least one sidewall suction hole 47 is further provided on the sidewall of the piercing end, and the sidewall suction hole 47 is opened in a different direction from the three-dimensional suction hole 46.

The application provides the target fluid suction different from the three-dimensional suction holes 46 by arranging at least one side wall suction hole 47, and the suction range is expanded, so that the target fluid at different parts can be uniformly and reasonably sucked, and the effective quality of the sucked target fluid is improved.

In some embodiments, two sidewall suction holes 47 are oppositely disposed on the sidewall of the puncturing member 4, the three-dimensional suction hole 46 and the two sidewall suction holes 47 form a "T" shape structure, and the target fluid is uniformly sucked from all directions of the human body through the sidewall suction holes 47 and the three-dimensional suction hole 46.

This application is through setting up helical structure 45, and the piece that punctures gets into the cancellous bone more easily in the suction process, for example suction marrow blood avoids directly extruding the cancellous bone through the rotation to send the bone wall bone hole to be closed up, influences the marrow liquid and flows out, and the screw thread of rotating simultaneously pumps the marrow blood at different positions more evenly rationally, makes the effective cell of marrow blood and growth factor collect more fully.

In some embodiments, the helical structure 45 includes at least two helical grooves, with the depth of the depression in the helical grooves being greater than the depth of the depression at the outer periphery of the helical grooves.

In some embodiments, the spiral groove gradually reduces in depth of depression in the spiral groove along a direction away from the puncture end, the chip edge of the puncture end is arranged to be high in the front and low in the back, and the spiral groove is of a structure with the high in the front and the low in the back, so that a vacuum area is formed in a path through which bone chips flow, accumulation of the bone chips is avoided, and the extraction quality of target fluid is improved.

In some embodiments, the end of the spike 4 remote from the first conduit 31 is provided with a screw thread formation 48, the screw thread formation 48 being provided adjacent the screw thread formation 45.

This application is through setting up helicitic texture 48 for in the suction process, be convenient for control piercing depth and direction of piercing depth spare, the operation of being convenient for.

In some embodiments, a handle 5; the handle 5 is fixedly connected with the multi-loop assembly 3.

This application is through setting up the handle, and at the suction in-process, the direction position of convenient medical suction device is controlled easy operation.

Some specific examples of the present specification are listed below based on the above technical solutions.

Example 1

This embodiment 1 discloses a medical suction device, please refer to fig. 1-10, which includes: a first suction device 1, a second suction device 2, a multi-circuit assembly 3 and a piercing member 4; the multi-circuit control assembly 3 comprises at least a first 31 and a second 32 circuit in communication; the suction end of the first pipeline 31 is communicated with the puncture piece 4, the output end of the first pipeline 31 is respectively communicated with the suction end of the second pipeline 32 and the suction end of the second suction device 2, and the output end of the second pipeline 32 is communicated with the first suction device 1; the puncturing member 4 is used to suck a target fluid, which flows along the first and

second piping lines

31, 2 and 32 to the first suction device 1.

Specifically, the first suction device 1 may be a syringe, the first suction device 1 includes a suction core bar 11 and a fluid containing cylinder 12, the suction core bar 11 is slidably connected with the fluid containing cylinder 12, and the suction core bar 11 can reciprocate along the inner wall of the fluid containing cylinder 12; the suction end of the fluid containing cylinder 12 is communicated with the second pipeline 32; the suction core bar 11 is provided with 3 clamping structures 13, one end of the fluid containing cylinder 12, which is far away from the second pipeline 32, is provided with a buckle 14 matched with the clamping structures 13, and multi-position limiting of the suction core bar 11 can be realized by arranging a plurality of clamping structures 13.

Please refer to fig. 3-5; FIG. 3 is a schematic cross-sectional view of a first suction device; FIG. 4 is a schematic structural view of the clamping structure clamped with the buckle; fig. 5 is a schematic structural view of the clamping structure and the buckle under the condition of not clamping. It should be noted that the core rod can move smoothly in the axial direction, the latch 14 matching with the latch structure 13 is not fixed in the position-limiting structure, when the position-limiting is needed, the position-limiting function can be realized by deflecting simply in the direction perpendicular to the axial direction, and the position-limiting capability of the mechanism increases with the increase of the pressure value, that is, the suction core rod 11 can move between the two latch structures 13 under the condition that the suction core rod 11 is subjected to negative pressure with opposite latch positions.

It should be noted that the distance between adjacent snap structures 13 may be determined according to the capacity of fluid containing cartridge 12, and for example, the distance between adjacent snap structures 13 may be set to correspond to a capacity difference of 5ml in fluid containing cartridge 12.

Specifically, the multi-circuit control assembly 3 further comprises a third pipeline 33, one end of the third pipeline 33 is communicated with the second suction device 2, and the other end of the third pipeline 33 is respectively communicated with the output end of the first pipeline 31 and the suction end of the second pipeline 32; the first, second and

third pipes

31, 32, 33 constitute a claw structure. By providing a claw-like structure, the pumping stability of the multi-circuit control assembly 3 is improved. The puncturing member 4 sucks a target fluid, and the target fluid flows through the first line 31, the third line 33, the second suction device 2, the third line 33, and the second line 32 in this order, and finally flows toward the first suction device 1.

Specifically, a first one-way valve 34 is arranged in the first pipeline 31, and the opening of the first one-way valve 34 faces to the side far away from the puncture piece 4; a second check valve 35 is provided in the second pipe 32, and the second check valve 35 opens to a side close to the first suction device 1.

In practical application, the suction core rod 11 is drawn towards a direction away from the fluid containing cylinder 12 to perform variable pressure suction, in the process of drawing the suction core rod 11, under the driving of negative pressure, the first one-way valve 34 in the first pipeline 31 and the second one-way valve 35 in the second pipeline 32 are respectively in an open state, the target fluid flows to the fluid containing cylinder 12 through the first pipeline 31 and the second pipeline 32, and after the suction core rod 11 sucks the target fluid to a target capacity, the suction core rod 11 can be limited through the clamping structure 13 and the buckle 14 to keep the negative pressure state in the fluid containing cylinder 12, so that suction is completed.

Specifically, referring to fig. 6, the second suction device 2 includes a pressure member 21, a return elastic member 22 and a storage cavity 23; the storage chamber 23 is respectively communicated with the first pipeline 31 and the second pipeline 32; the pressurizing piece 21 is connected with the inner wall of the storage cavity 23 in a sealing way, and the pressurizing piece 21 can reciprocate along the inner wall of the storage cavity 23; one end of the return elastic member 22 abuts against the pressure member 21, and the elastic direction of the return elastic member 22 is the same as the return movement direction of the pressure member 21.

Specifically, the pressing member 21 includes a piston and a pressing trigger, and the return elastic member 22 may be a spring. The sum of the length of the pressing member 21 and the length of the return elastic member 22 in the storage chamber 23 is equal to the length of the inner cavity of the storage chamber 23. The piston is connected with the inner wall of the storage cavity 23 in a sealing way and can reciprocate along the inner wall of the storage cavity 23; one end of the spring abuts against the pressure member 21, and the spring force direction of the spring is the same as the return movement direction of the pressure member 21.

Specifically, referring to fig. 9, the puncturing member 4 includes a puncturing end; the piercing end is provided with a first chip surface 41, a second chip surface 42, a third chip surface 43 and a fourth chip surface 44 in sequence; the first cutting surface 41 forms a larger surface angle with the longitudinal direction of the piercing member than the second cutting surface 42 forms with the longitudinal direction of the piercing member, the first cutting surface forms the same surface angle with the longitudinal direction of the piercing member as the third cutting surface 43 forms with the longitudinal direction of the piercing member, and the second cutting surface 42 forms the same surface angle with the longitudinal direction of the piercing member as the fourth cutting surface 44 forms with the longitudinal direction of the piercing member. The first chip surface 41, the second chip surface 42, the third chip surface 43, and the fourth chip surface 44 constitute a chip edge.

During the puncturing process, the rotating direction of the puncturing end is clockwise from bottom to top, namely, the puncturing end rotates along the direction of the cutting surface which is close to the object to be cut and is far away from the object to be cut.

Specifically, the piercing end of the piercing member 4 is provided with a spiral structure 45, and the spiral structure 45 comprises at least two spiral grooves, and the depth of the depression in the spiral grooves is higher than the depth of the depression on the outer periphery of the spiral grooves. On the spiral groove was followed and is kept away from puncture end direction, the sunken degree of depth in the spiral groove reduced gradually, and height back is low before taking through the smear metal sword that sets up puncture end, and the helicla flute adopts the structure of height back height before the low for the route that the bone bits flowed through forms the vacuum area, avoids the bone bits to pile up, improves the extraction quality of target fluid.

Specifically, a three-dimensional suction hole 46 is provided at the spiral structure 45, and the three-dimensional suction hole 46 is a special-shaped hole. The three-dimensional suction hole 46 communicates with the first pipe 31, and the three-dimensional suction hole 46 is used to suck a target fluid.

Specifically, two side wall suction holes 47 are oppositely arranged on the side wall of the puncture tip, and the opening direction of the side wall suction holes 47 is different from that of the three-dimensional suction holes 46. The three-dimensional suction hole 46 and the two sidewall suction holes 47 constitute a "T" shaped structure, and the target fluid is uniformly sucked from all directions of the human body through the sidewall suction holes 47 and the three-dimensional suction hole 46.

In particular, a handle 5; the handle 5 is fixedly connected with the multi-loop component 3.

Example 2

Embodiment 2 discloses a medical suction device, comprising: a first suction device 1, a second suction device 2, a multi-circuit assembly 3 and a piercing member 4; the multi-circuit control assembly 3 comprises at least a first 31 and a second 32 circuit in communication; the suction end of the first pipeline 31 is communicated with the puncture piece 4, the output end of the first pipeline 31 is respectively communicated with the suction end of the second pipeline 32 and the suction end of the second suction device 2, and the output end of the second pipeline 32 is communicated with the first suction device 1; the puncturing member 4 is used to suck a target fluid, which flows along the first and

second piping lines

31, 2 and 32 to the first suction device 1.

The present embodiment 2 differs from embodiment 1 in that: the end of the piercing member 4 away from the first pipeline 31 is provided with a thread structure 48, and other parts in this embodiment 2 are the same as those in the first embodiment, and are not described again.

In the embodiment 2, the thread structure 48 is arranged, so that the puncture depth and the puncture direction of the puncture piece can be conveniently controlled and the operation is convenient during the suction process.

this application has realized that the suction is controllable through setting up a plurality of suction device, need not maintain the negative pressure with the hand for a long time when the suction simultaneously, alleviates medical staff fatigue, easy operation.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A medical suction device, comprising: a first suction device (1), a second suction device (2), a multi-circuit assembly (3) and a piercing member (4);

the multi-circuit control assembly comprises at least a first pipeline (31) and a second pipeline (32) which are communicated;

the suction end of the first pipeline (31) is communicated with the puncture piece (4), the output end of the first pipeline (31) is respectively communicated with the suction end of the second pipeline (32) and the suction end of the second suction device (2), and the output end of the second pipeline (32) is communicated with the first suction device (1);

the piercing member (4) is used for sucking a target fluid, which flows along the first and second lines (31, 32) to the first suction device (1), or flows along the first and second lines (31, 2, 32) to the first suction device (1).

2. The medical suction device as claimed in claim 1, wherein a first one-way valve (34) is arranged in said first conduit (31), said first one-way valve (34) opening towards a side remote from said piercing member (4);

a second one-way valve (35) is arranged in the second pipeline (32), and the opening of the second one-way valve (35) faces to one side close to the first suction device (1).

3. The medical suction device according to claim 1, wherein the first suction device (1) comprises a suction core bar (11) and a fluid containing barrel (12), the suction core bar (11) is connected with the fluid containing barrel (12) in a sliding manner, and the suction core bar (11) can reciprocate along the inner wall of the fluid containing barrel (12);

the suction end of the fluid containing cylinder (12) is communicated with the second pipeline (32);

at least one clamping structure (13) is arranged on the suction core rod (11), and a buckle (14) matched with the clamping structure (13) is arranged at one end, far away from the second pipeline (32), of the fluid containing barrel (12).

4. The medical suction device according to claim 1, characterized in that the piercing member (4) comprises a piercing end;

the piercing end is sequentially provided with a first chip surface (41), a second chip surface (42), a third chip surface (43) and a fourth chip surface (44);

the first cutting surface and the piercing member have different surface angles in the longitudinal direction, the second cutting surface (42) and the piercing member have different surface angles in the longitudinal direction, the first cutting surface and the piercing member have the same surface angle in the longitudinal direction, the third cutting surface (43) and the piercing member have the same surface angle in the longitudinal direction, and the second cutting surface (42) and the piercing member have the same surface angle in the longitudinal direction, and the fourth cutting surface (44) and the piercing member have the same surface angle in the longitudinal direction.

5. The medical suction device according to claim 1, characterized in that the second suction device (2) comprises a pressure member (21), a return spring (22) and a storage chamber (23);

the storage cavity (23) is respectively communicated with the first pipeline (31) and the second pipeline (32);

the pressurizing piece (21) is connected with the inner wall of the storage cavity (23) in a sealing way, and the pressurizing piece (21) can reciprocate along the inner wall of the storage cavity (23);

one end of the elastic resetting piece (22) is abutted against the pressurizing piece (21), and the elastic direction of the elastic resetting piece (22) is the same as the resetting movement direction of the pressurizing piece (21).

6. The medical suction device according to claim 4, wherein the puncturing end of the puncturing member (4) is provided with a spiral structure (45), a three-dimensional suction hole (46) is provided at the spiral structure (45), the three-dimensional suction hole (46) is communicated with the first pipeline (31), and the three-dimensional suction hole (46) is used for sucking a target fluid.

7. The medical suction device as claimed in claim 6, wherein at least one sidewall suction hole (47) is further provided on the sidewall of the puncturing end, and the sidewall suction hole (47) is opened in a direction different from the three-dimensional suction hole (46).

8. The medical suction device according to claim 6, wherein the spiral structure (45) comprises at least two spiral grooves, the depth of the depression in the spiral grooves being higher than the depth of the depression at the periphery of the spiral grooves.

9. The medical suction device as claimed in claim 1, wherein the end of the piercing member (4) remote from the first conduit (31) is provided with a screw thread formation (48), the screw thread formation (48) being provided adjacent to the screw thread formation (45).

10. The medical suction device as claimed in claim 1, further comprising a handle (5);

the handle (5) is fixedly connected with the multi-loop component (3).