A medical suction device

Abstract

The present application relates to the technical field of medical equipment, and specifically to a medical suction device, comprising: a first suction device, a second suction device, a multi-circuit assembly and a puncture piece; the multi-circuit control assembly comprises at least a first pipeline and a second pipeline that are connected; the suction end of the first pipeline is connected to the puncture piece, the output end of the first pipeline is respectively connected to 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 connected to the first suction device; the puncture piece is used to inhale a target fluid, and the target fluid flows along the first pipeline and the second pipeline to the first suction device, or the target fluid flows along the first pipeline, the second suction device and the second pipeline to the first suction device. The present application realizes controllable suction by providing multiple suction devices, and at the same time, there is no need to maintain negative pressure by hand for a long time during suction, which relieves fatigue of medical staff and is simple to operate.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a medical suction device. Background Art

[0002] In modern medicine, it is usually necessary to extract fluids from the human body to treat various clinical diseases. For example, bone marrow blood (BMAC) is extracted. Bone marrow blood contains not only platelets, but also stem cells and a variety of other cells. Among them, stem cells have significant anti-inflammatory properties and can affect other cells involved in inflammation and healing. Stem cells also have the ability to become other types of cells and have been proven and increasingly used in various clinical diseases. For example, combining bone marrow blood with a functional matrix and then transplanting it into soft tissue injuries or bone defects can promote the healing of damaged soft tissues, bone defects or fracture ends, and the clinical results are positively correlated with the number of fibroblast colony-forming units (CFU-F) in the graft. However, existing suction devices cannot achieve controllable suction, and medical staff often suffer from hand pain and fatigue due to maintaining negative pressure for a long time during suction. Therefore, it is necessary to provide an improved medical suction device to solve the above-mentioned problems existing in the prior art. Summary of the Invention

[0003] In response to the above-mentioned problems in the prior art, the present application discloses a medical suction device that can extract high-quality bone marrow blood and reduce the fatigue of medical staff.

[0004] This application is achieved through the following technical solutions:

[0005] The present application provides a medical suction device, comprising: a first suction device, a second suction device, a multi-circuit assembly, and a puncture member;

[0006] The multi-circuit control assembly comprises at least a first pipeline and a second pipeline in communication;

[0007] The suction end of the first pipeline is connected to the puncture member, the output end of the first pipeline is connected to the suction end of the second pipeline and the suction end of the second suction device respectively, and the output end of the second pipeline is connected to the first suction device;

[0008] The puncture member is used to suck the target fluid, and the target fluid flows along the first pipeline and the second pipeline to the first suction device, or the target fluid flows along the first pipeline, the second suction device and the second pipeline to the first suction device.

[0009] Furthermore, a first one-way valve is provided in the first pipeline, and an opening of the first one-way valve faces a side away from the puncture member;

[0010] A second one-way valve is provided in the second pipeline, and an opening of the second one-way valve faces a side close to the first suction device.

[0011] Furthermore, the first suction device includes a suction core rod and a fluid accommodating cylinder, the suction core rod is slidably connected to the fluid accommodating cylinder, and the suction core rod can reciprocate along the inner wall of the fluid accommodating cylinder;

[0012] The suction end of the fluid accommodating cylinder is in communication with the second pipeline;

[0013] At least one clamping structure is provided on the suction core rod, and a buckle matching the clamping structure is provided on the end of the fluid accommodating cylinder away from the second pipeline.

[0014] Further, the puncture member includes a puncture end;

[0015] The puncture end is provided with a first chip surface, a second chip surface, a third chip surface and a fourth chip surface in sequence;

[0016] The surface angle formed by the first cutting surface and the length direction of the puncture member is different from the surface angle formed by the second cutting surface and the length direction of the puncture member, the surface angle formed by the first cutting surface and the length direction of the puncture member is the same as the surface angle formed by the third cutting surface and the length direction of the puncture member, and the surface angle formed by the second cutting surface and the length direction of the puncture member is equal to the surface angle formed by the fourth cutting surface and the length direction of the puncture member.

[0017] Furthermore, the second suction device includes a pressurizing member, a restoring elastic member and a storage chamber;

[0018] The storage cavity is communicated with the first pipeline and the second pipeline respectively;

[0019] The pressurizing member is sealedly connected to the inner wall of the storage cavity, and the pressurizing member can reciprocate along the inner wall of the storage cavity;

[0020] One end of the reset elastic member abuts against the pressurizing member, and the elastic force direction of the reset elastic member is the same as the reset movement direction of the pressurizing member.

[0021] Furthermore, the puncture end of the puncture member is provided with a spiral structure, and a three-dimensional suction hole is provided at the spiral structure. The three-dimensional suction hole is connected to the first pipeline, and the three-dimensional suction hole is used to suck the target fluid.

[0022] Furthermore, at least one side wall suction hole is provided on the side wall of the puncture end, and the opening direction of the side wall suction hole is different from that of the three-dimensional suction hole.

[0023] Furthermore, the spiral structure includes at least two spiral grooves, and the depression depth in the spiral groove is greater than the depression depth of the outer periphery of the spiral groove.

[0024] Furthermore, a threaded structure is provided at one end of the puncture member away from the first pipeline, and the threaded structure is arranged adjacent to the spiral structure.

[0025] Furthermore, it also includes a handle;

[0026] The handle is fixedly connected to the multi-circuit assembly.

[0027] By adopting the above technical solution, the medical suction device disclosed in this application has the following beneficial effects:

[0028] The present application realizes controllable suction by setting up multiple suction devices. At the same time, there is no need to maintain negative pressure with hands for a long time during suction, which relieves fatigue of medical staff and is simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a schematic structural diagram of a medical suction device according to an embodiment of the present application;

[0031] Figure 2 This is a detailed diagram of the first suction device involved in an embodiment of the present application;

[0032] Figure 3 is a cross-sectional schematic diagram of a first suction device involved in an embodiment of the present application;

[0033] Figure 4 This is a structural diagram of the clamping structure and the buckle clamping involved in the embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of the structure of the clamping structure and the buckle involved in the embodiment of the present application when they are not clamped;

[0035] Figure 6 This is a schematic structural diagram of a second suction device involved in an embodiment of the present application;

[0036] Figure 7 Schematic diagram of the structure of the puncture end of the puncture member involved in the embodiment of the present application;

[0037] Figure 8Schematic diagram of the structure of the puncture end of the puncture member involved in the embodiment of the present application;

[0038] Figure 9 A bottom view of the puncture end of the puncture member according to an embodiment of the present application;

[0039] Figure 10 Schematic diagram of the structure of the puncture end of the puncture member involved in the embodiment of the present application.

[0040] Among them, the figure marks correspond to: 1-first suction device; 2-second suction device; 3-multi-circuit assembly; 4-puncture member; 11-suction core rod; 12-fluid accommodating cylinder; 13-clamping structure; 14-clip; 21-pressurizing member; 22-resetting elastic member; 23-storage cavity; 31-first pipeline; 32-second pipeline; 33-third pipeline; 34-first one-way valve; 35-second one-way valve; 41-first cutting surface; 42-second cutting surface; 43-third cutting surface; 44-fourth cutting surface; 45-spiral structure; 46-three-dimensional suction hole; 47-side wall suction hole; 48-threaded structure; 5-handle. DETAILED DESCRIPTION

[0041] The embodiment of the present application discloses a medical suction device, which realizes controllable suction and does not require the use of hands to maintain negative pressure for a long time during suction, thereby alleviating fatigue of medical staff and being simple to operate.

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] It should be noted that in the description of the present application, it should 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 accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] This application provides a medical suction device, please refer to Figure 1-10, including: a first suction device 1, a second suction device 2, a multi-circuit assembly 3 and a puncture member 4; the multi-circuit control assembly 3 includes at least a first pipeline 31 and a second pipeline 32 that are connected; the suction end of the first pipeline 31 is connected to the puncture member 4, and the output end of the first pipeline 31 is respectively connected to 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 connected to the first suction device 1; the puncture member 4 is used to inhale the target fluid, and the target fluid flows along the first pipeline 31 and the second pipeline 32 to the first suction device 1, or the target fluid flows along the first pipeline 31, the second suction device 2 and the second pipeline 32 to the first suction device 1.

[0045] The present application sets up a multi-circuit control component 3 which is respectively connected to multiple suction devices and puncture members 4, and can realize controllable suction through a variety of suction methods. At the same time, there is no need to maintain negative pressure with hands for a long time during suction, which relieves fatigue of medical staff and is simple to operate.

[0046] The medical suction device provided in this application includes a constant pressure suction mode and a variable pressure suction mode, wherein the variable pressure suction mode is: suction is performed through the first suction device 1, the multi-circuit component 3 and the puncture member 4. During the suction process, negative pressure is provided by the first suction device 1, and the suction target fluid passes through the puncture member 4 and the multi-circuit control component 3 in sequence and then reaches the first suction device 1, completing the variable pressure suction; the constant pressure suction mode is: suction is performed through the second suction device 2, the first suction device 1, the multi-circuit component 3 and the puncture member 4. During the suction process, negative pressure is provided by the second suction device 1, and the suction target fluid passes through the puncture member 4, the multi-circuit control component 3, the second suction device 2 in sequence and then reaches the first suction device 1, completing the constant pressure suction. It should be noted that during constant pressure suction, the negative pressure provided by the second suction device 2 is a single press, and a single constant pressure quantitative suction is performed. This application can adapt to various types of surgeries and complex surgical environments through the two suction modes or their combination.

[0047] In a preferred embodiment, the multi-circuit control assembly 3 further includes a third pipeline 33, one end of which is connected to the second suction device 2, and the other end of the third pipeline 33 is respectively connected to the output end of the first pipeline 31 and the suction end of the second pipeline 32; the puncture member 4 inhales the target fluid, and the target fluid flows sequentially through the first pipeline 31, the third pipeline 33, the second suction device 2, the third pipeline 33 and the second pipeline 32, and finally flows to the first suction device 1.

[0048] In some embodiments, the first pipeline 31, the second pipeline 32, and the third pipeline 33 form a claw-shaped structure. By configuring the claw-shaped structure, the suction stability of the multi-circuit control assembly 3 is improved.

[0049] 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 can be the same, or 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 can be different, which can be matched according to the target fluid to be pumped.

[0050] In some embodiments, the length of the third pipeline 33 is less than or equal to the length of the first pipeline 31 or the length of the second pipeline 32 or the third pipeline 33 .

[0051] In some embodiments, the first pipeline 31 and the second pipeline 32 can be variable inner diameter pipelines. The inner diameter of the first pipeline 31 can gradually increase along the direction close to the puncture member 4, and the inner diameter of the second pipeline 32 can gradually decrease along the direction away from the first suction device 1. Through the above structure, the backflow of the target fluid during the suction process can be reduced.

[0052] In some embodiments, a first one-way valve 34 is provided in the first pipeline 31, and the opening of the first one-way valve 34 is facing the side away from the puncture member 4; a second one-way valve 35 is provided in the second pipeline 32, and the opening of the second one-way valve 35 is facing the side close to the first suction device 1.

[0053] The present application provides a first one-way valve 34 and a second one-way valve 35 in the first pipeline 31 and the second pipeline 32 respectively, thereby preventing the target fluid from flowing back during the suction process, thereby facilitating operation.

[0054] In actual application, suction is performed by providing negative pressure through the second suction device. During suction, negative pressure is provided by the second suction device, and the negative pressure drives the second one-way valve 34 to an open state. The target fluid flows from the second suction device 2 to the first suction device 1, and then negative pressure is provided by the second suction device. The negative pressure drives the first one-way valve 34 to an open state, and the target fluid is sucked into the second suction device through the puncture member 4.

[0055] In some embodiments, the first suction device 1 includes a suction core rod 11 and a fluid-containing barrel 12. The suction core rod 11 is slidably connected to the fluid-containing barrel 12 and can reciprocate along the inner wall of the fluid-containing barrel 12. The suction end of the fluid-containing barrel 12 is connected to the second pipeline 32. The suction core rod 11 is provided with at least one snap-fit ​​structure 13, and the end of the fluid-containing barrel 12 away from the second pipeline 32 is provided with a snap 14 that matches the snap-fit ​​structure 13. Specifically, the first suction device 1 can be a syringe.

[0056] The present application sets up a snap-fit ​​structure 13 and a snap 14. During the process of providing negative pressure suction by utilizing the first suction device 1, the snap-fit ​​structure 13 and the snap 14 are matched to limit and fix the negative pressure state of the first suction device 1, without the need to maintain the negative pressure by hand, thereby alleviating the fatigue of medical staff and simplifying the operation.

[0057] In some embodiments, the buckle 14 that matches the snap-fit ​​structure 13 can be set on the inner wall of the fluid accommodating tube 12. Its position is not limited, as long as it can achieve the function of limiting the position of the suction core rod 11. For details, please refer to Figure 3-5 ; Figure 3 is a cross-sectional schematic diagram of a first suction device; Figure 4 It is a structural diagram of the case where the snap-fit ​​structure and the snap-fit ​​are snap-fitted; Figure 5 This is a schematic diagram of the structure when the clamping structure and the buckle are not engaged. It should be noted that the core rod can move smoothly in the axial direction, and the buckle 14 matched with the clamping structure 13 is not a fixed limiting structure. When limiting is required, it can achieve the limiting function by simply deflecting perpendicular to the axial direction. The limiting capacity of this mechanism increases with the increase of pressure value. In other words, when the suction core rod 11 is subjected to negative pressure at opposite clamping positions, the suction core rod 11 can move between the two clamping structures 13.

[0058] In a preferred embodiment, three snap-fit ​​structures 13 are provided on the suction core rod 11, and a snap 14 matching the snap-fit ​​structure 13 is provided on the end of the fluid accommodating cylinder 12 away from the second pipeline 32. By providing multiple snap-fit ​​structures 13, multi-position limiting of the suction core rod 11 can be achieved.

[0059] In some embodiments, the distance between adjacent snap-fit ​​structures 13 can be determined according to the capacity of the fluid accommodating cylinder 12 . For example, the distance between adjacent snap-fit ​​structures 13 can be set to correspond to a capacity difference of 5 ml in the fluid accommodating cylinder 12 .

[0060] In actual application, variable-pressure suction is performed by pulling the suction core rod 11 away from the fluid accommodating cylinder 12. During the process of pulling the suction core rod 11, driven by 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 opened, and the target fluid flows to the fluid accommodating cylinder 12 through the first pipeline 31 and the second pipeline 32. After the suction core rod 11 is pulled to suck the target fluid to the target capacity, the suction core rod 11 can be limited by the snap-fit ​​structure 13 and the buckle 14 to maintain the negative pressure state in the fluid accommodating cylinder 12 and complete the suction.

[0061] In some embodiments, please refer to Figure 6The second suction device 2 includes a pressurizing member 21, a reset elastic member 22 and a storage cavity 23; the storage cavity 23 is respectively connected to the first pipeline 31 and the second pipeline 32; the pressurizing member 21 is sealedly connected to the inner wall of the storage cavity 23, and the pressurizing member 21 can reciprocate along the inner wall of the storage cavity 23; one end of the reset elastic member 22 abuts against the pressurizing member 21, and the elastic direction of the reset elastic member 22 is the same as the reset movement direction of the pressurizing member 21.

[0062] The present application improves the automation of suction by arranging a pressure member 21 and a reset elastic member 22 to cooperate with each other, realizes quantitative suction and controllable suction, and improves the accuracy of the suction amount.

[0063] In some embodiments, the pressurizing member 21 includes a piston and a pressurizing trigger, and the resetting elastic member 22 can be a spring.

[0064] In some embodiments, the length of the resetting elastic member 22 is smaller than the length of the storage cavity 23 ; and the inner diameter of the resetting elastic member 22 is smaller than the inner diameter of the storage cavity 23 .

[0065] In a preferred embodiment, the sum of the length of the pressurizing member 21 and the length of the restoring elastic member 22 located in the storage cavity 23 is equal to the inner length of the storage cavity 23 .

[0066] In a specific embodiment, the piston is sealed and connected to the inner wall of the storage chamber 23, 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 direction of the spring's elastic force is the same as the reset movement direction of the pressure member 21.

[0067] In actual application, when the first suction device 1 is in a state where the snap-fit ​​structure 13 and the buckle 14 are not engaged, the pressurizing trigger is pressed once, and the piston is subjected to a force in the direction of the spring, pushing the target fluid in the storage chamber 23 to the second pipeline 32 and then to the first suction device. At the same time, the piston compresses the spring, and the spring rebounds after being compressed, returning the piston to its initial position. The rebound force provides a negative pressure to draw the target fluid from the first pipeline 31 into the storage chamber 23. The pressurizing trigger is pressed back and forth, and the piston and spring cooperate with each other to move repeatedly to complete constant-pressure suction.

[0068] In some cases, after the variable pressure suction by the first suction device 1, there are some unfilled target fluid spaces 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 can no longer suction, or the unfilled target fluid spaces are small. Now the unfilled target fluid spaces in the first suction device 1 can be supplemented with suction by the second suction device 1, and a single press of the pressurization trigger can gradually replenish the target fluid into the first suction device 1 in small amounts.

[0069] In some embodiments, please refer to Figure 9The piercing member 4 includes a piercing end; the piercing end is sequentially provided with a first chipping surface 41, a second chipping surface 42, a third chipping surface 43, and a fourth chipping surface 44; the first chipping surface and the second chipping surface 42 form different angles with the longitudinal direction of the piercing member; the first chipping surface and the third chipping surface 43 form the same angle with the longitudinal direction of the piercing member; and the second chipping surface 42 and the fourth chipping surface 44 form the same angle with the longitudinal direction of the piercing member. It should be noted that the first chipping surface 41, the second chipping surface 42, the third chipping surface 43, and the fourth chipping surface 44 constitute a chipping edge.

[0070] The present application provides a plurality of cutting surfaces with different surface angles on the puncture end of the puncture member, thereby reducing the accumulation of bone chips during the suction process and improving the suction quality of the target fluid.

[0071] In some embodiments, the angle formed between the first cutting surface 41 and the length direction of the puncture member is greater than the angle formed between the second cutting surface 42 and the length direction of the puncture member, the angle formed between the first cutting surface and the length direction of the puncture member is the same as the angle formed between the third cutting surface 43 and the length direction of the puncture member, and the angle formed between the second cutting surface 42 and the length direction of the puncture member is the same as the angle formed between the fourth cutting surface 44 and the length direction of the puncture member. During the puncture process, the puncture end rotates clockwise when viewed from bottom to top, that is, it rotates along the cutting surface closer to the object to be cut toward the cutting surface farther from the object to be cut.

[0072] In some embodiments, the puncture end of the puncture member 4 is provided with a spiral structure 45 , and a three-dimensional suction hole 46 is provided at the spiral structure 45 . The three-dimensional suction hole 46 is connected to the first pipeline 31 and is used to inhale the target fluid.

[0073] The present application arranges the three-dimensional suction hole 46 in the spiral structure 45 of the puncture member, thereby ensuring that the puncture member can suck the target fluid in each space through the three-dimensional suction hole 46 without affecting the cutting and attacking of the puncture end, thereby improving the efficiency and accuracy of suction.

[0074] In some embodiments, the three-dimensional suction holes 46 are irregularly shaped holes.

[0075] In some embodiments, at least one side wall suction hole 47 is further provided on the side wall of the puncture end, and the opening direction of the side wall suction hole 47 is different from that of the three-dimensional suction hole 46 .

[0076] The present application provides target fluid suction different from the three-dimensional suction holes 46 by setting at least one side wall suction hole 47, thereby expanding the suction range, thereby evenly and reasonably sucking target fluids from different parts and improving the effective quality of the sucked target fluid.

[0077] In some embodiments, two side wall suction holes 47 are relatively arranged on the side wall of the puncture member 4, and the three-dimensional suction hole 46 and the two side wall suction holes 47 form a "T"-shaped structure, and the target fluid is evenly sucked from all directions of the human body through the side wall suction holes 47 and the three-dimensional suction holes 46.

[0078] By setting up a spiral structure 45, the present application allows the puncture piece to enter the cancellous bone more easily during the suction process, such as sucking bone marrow blood. By rotating, direct squeezing of the cancellous bone is avoided to cause occlusion of the bone wall and bone pores, affecting the outflow of bone marrow fluid. At the same time, by rotating the thread, bone marrow blood from different parts is sucked more evenly and reasonably, so that effective cells and growth factors of the bone marrow blood are collected more fully.

[0079] In some embodiments, the spiral structure 45 includes at least two spiral grooves, and the depression depth in the spiral groove is greater than the depression depth at the periphery of the spiral groove.

[0080] In some embodiments, the depth of the spiral groove gradually decreases as it moves away from the puncture end. By setting the cutting edge of the puncture end to be high in the front and low in the back, and the spiral groove to be low in the front and high in the back, a vacuum area is formed in the path where bone chips flow, thereby avoiding the accumulation of bone chips and improving the extraction quality of the target fluid.

[0081] In some embodiments, a threaded structure 48 is provided at one end of the piercing member 4 away from the first pipeline 31 , and the threaded structure 48 is provided adjacent to the spiral structure 45 .

[0082] The present application provides a threaded structure 48, so that during the suction process, it is easy to control the puncture depth and direction of the puncture member, thereby facilitating operation.

[0083] In some embodiments, a handle 5 is further included; the handle 5 is fixedly connected to the multi-circuit assembly 3 .

[0084] The present application provides a handle to facilitate control of the direction and position of the medical suction device during the suction process, and the operation is simple.

[0085] The following lists some specific embodiments of this specification based on the above technical solutions.

[0086] Example 1

[0087] This embodiment 1 discloses a medical suction device, please refer to Figure 1-10, including: a first suction device 1, a second suction device 2, a multi-circuit assembly 3 and a puncture member 4; the multi-circuit control assembly 3 includes at least a first pipeline 31 and a second pipeline 32 that are connected; the suction end of the first pipeline 31 is connected to the puncture member 4, and the output end of the first pipeline 31 is respectively connected to 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 connected to the first suction device 1; the puncture member 4 is used to inhale the target fluid, and the target fluid flows along the first pipeline 31 and the second pipeline 32 to the first suction device 1, or the target fluid flows along the first pipeline 31, the second suction device 2 and the second pipeline 32 to the first suction device 1.

[0088] Specifically, the first suction device 1 can be a syringe, and the first suction device 1 includes a suction core rod 11 and a fluid accommodating cylinder 12. The suction core rod 11 is slidingly connected to the fluid accommodating cylinder 12, and the suction core rod 11 can reciprocate along the inner wall of the fluid accommodating cylinder 12; the suction end of the fluid accommodating cylinder 12 is connected to the second pipeline 32; three clip structures 13 are provided on the suction core rod 11, and a clip 14 matching the clip structure 13 is provided on the end of the fluid accommodating cylinder 12 away from the second pipeline 32. By setting multiple clip structures 13, multi-position limiting of the suction core rod 11 can be achieved.

[0089] Please refer to Figure 3-5 ; Figure 3 is a cross-sectional schematic diagram of a first suction device; Figure 4 It is a structural diagram of the case where the snap-fit ​​structure and the snap-fit ​​are snap-fitted; Figure 5 This is a schematic diagram of the structure when the clamping structure and the buckle are not engaged. It should be noted that the core rod can move smoothly in the axial direction, and the buckle 14 matched with the clamping structure 13 is not a fixed limiting structure. When limiting is required, it can achieve the limiting function by simply deflecting perpendicular to the axial direction. The limiting capacity of this mechanism increases with the increase of pressure value. In other words, when the suction core rod 11 is subjected to negative pressure at opposite clamping positions, the suction core rod 11 can move between the two clamping structures 13.

[0090] It should be noted that the distance between adjacent snap-fit ​​structures 13 can be determined according to the capacity of the fluid accommodating cylinder 12 . For example, the distance between adjacent snap-fit ​​structures 13 can be set to correspond to a capacity difference of 5 ml in the fluid accommodating cylinder 12 .

[0091] Specifically, the multi-circuit control assembly 3 also includes a third pipeline 33, one end of which is connected to the second suction device 2, and the other end of which is connected to the output end of the first pipeline 31 and the suction end of the second pipeline 32. The first pipeline 31, the second pipeline 32, and the third pipeline 33 form a claw-shaped structure. This claw-shaped structure improves the suction stability of the multi-circuit control assembly 3. The piercing member 4 draws in the target fluid, which then flows sequentially through the first pipeline 31, the third pipeline 33, the second suction device 2, the third pipeline 33, and the second pipeline 32, before finally flowing to the first suction device 1.

[0092] Specifically, a first one-way valve 34 is provided in the first pipeline 31, and the opening of the first one-way valve 34 is facing the side away from the puncture member 4; a second one-way valve 35 is provided in the second pipeline 32, and the opening of the second one-way valve 35 is facing the side close to the first suction device 1.

[0093] In actual application, variable-pressure suction is performed by pulling the suction core rod 11 away from the fluid accommodating cylinder 12. During the process of pulling the suction core rod 11, driven by 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 opened, and the target fluid flows to the fluid accommodating cylinder 12 through the first pipeline 31 and the second pipeline 32. After the suction core rod 11 is pulled to suck the target fluid to the target capacity, the suction core rod 11 can be limited by the snap-fit ​​structure 13 and the buckle 14 to maintain the negative pressure state in the fluid accommodating cylinder 12 and complete the suction.

[0094] In actual application, suction is performed by providing negative pressure through the second suction device. During suction, negative pressure is provided by the second suction device, and the negative pressure drives the second one-way valve 34 to an open state. The target fluid flows from the second suction device 2 to the first suction device 1, and then negative pressure is provided by the second suction device. The negative pressure drives the first one-way valve 34 to an open state, and the target fluid is sucked into the second suction device through the puncture member 4.

[0095] Specifically, please refer to Figure 6 The second suction device 2 includes a pressurizing member 21, a reset elastic member 22 and a storage cavity 23; the storage cavity 23 is respectively connected to the first pipeline 31 and the second pipeline 32; the pressurizing member 21 is sealedly connected to the inner wall of the storage cavity 23, and the pressurizing member 21 can reciprocate along the inner wall of the storage cavity 23; one end of the reset elastic member 22 abuts against the pressurizing member 21, and the elastic direction of the reset elastic member 22 is the same as the reset movement direction of the pressurizing member 21.

[0096] Specifically, the pressure member 21 includes a piston and a pressure trigger, and the resilient return member 22 can be a spring. The sum of the lengths of the pressure member 21 and the resilient return member 22 within the storage chamber 23 is equal to the length of the storage chamber 23. The piston is sealed against the inner wall of the storage chamber 23 and can reciprocate along the inner wall. One end of the spring abuts the pressure member 21, and the direction of the spring's force is the same as the direction of the pressure member 21's return motion.

[0097] In actual application, when the first suction device 1 is in a state where the snap-fit ​​structure 13 and the buckle 14 are not engaged, the pressurizing trigger is pressed once, and the piston is subjected to a force in the direction of the spring, pushing the target fluid in the storage chamber 23 to the second pipeline 32 and then to the first suction device. At the same time, the piston compresses the spring, and the spring rebounds after being compressed, returning the piston to its initial position. The rebound force provides a negative pressure to draw the target fluid from the first pipeline 31 into the storage chamber 23. The pressurizing trigger is pressed back and forth, and the piston and spring cooperate with each other to move repeatedly to complete constant-pressure suction.

[0098] In some cases, after the variable pressure suction by the first suction device 1, there are some unfilled target fluid spaces 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 can no longer suction, or the unfilled target fluid spaces are small. Now the unfilled target fluid spaces in the first suction device 1 can be supplemented with suction by the second suction device 1, and a single press of the pressurization trigger can gradually replenish the target fluid into the first suction device 1 in small amounts.

[0099] Specifically, please refer to Figure 9 The piercing member 4 includes a piercing end; the piercing end is sequentially provided with a first chipping surface 41, a second chipping surface 42, a third chipping surface 43, and a fourth chipping surface 44; the angle formed between the first chipping surface 41 and the longitudinal direction of the piercing member is greater than the angle formed between the second chipping surface 42 and the longitudinal direction of the piercing member; the angle formed between the first chipping surface and the longitudinal direction of the piercing member is the same as the angle formed between the third chipping surface 43 and the longitudinal direction of the piercing member; and the angle formed between the second chipping surface 42 and the longitudinal direction of the piercing member is the same as the angle formed between the fourth chipping surface 44 and the longitudinal direction of the piercing member. It should be noted that the first chipping surface 41, the second chipping surface 42, the third chipping surface 43, and the fourth chipping surface 44 constitute a chipping edge.

[0100] During the puncture process, the rotation direction of the puncture end is clockwise when viewed from bottom to top, that is, it rotates along the cutting surface closer to the object to be cut toward the cutting surface farther from the object to be cut.

[0101] Specifically, the puncture end of the puncture member 4 is provided with a spiral structure 45 comprising at least two spiral grooves, the depth of the depression in the spiral grooves being greater than the depth of the depression at the outer periphery of the spiral grooves. The depth of the spiral grooves gradually decreases as they move away from the puncture end. By configuring the cutting edge of the puncture end to be high at the front and low at the back, and the spiral grooves to be low at the front and high at the back, a vacuum zone is formed in the path through which bone chips flow, preventing the accumulation of bone chips and improving the extraction quality of the target fluid.

[0102] Specifically, a three-dimensional suction hole 46 is provided at the spiral structure 45. The three-dimensional suction hole 46 is a special-shaped hole and is connected to the first pipeline 31. The three-dimensional suction hole 46 is used to suck the target fluid.

[0103] Specifically, two sidewall suction holes 47 are disposed on the sidewalls of the puncture tip. The opening direction of the sidewall suction holes 47 is different from that of the three-dimensional suction holes 46. The three-dimensional suction holes 46 and the two sidewall suction holes 47 form a "T"-shaped structure, and the target fluid is evenly sucked from all directions of the human body through the sidewall suction holes 47 and the three-dimensional suction holes 46.

[0104] Specifically, it also includes a handle 5 ; the handle 5 is fixedly connected to the multi-circuit assembly 3 .

[0105] Example 2

[0106] Example 2 discloses a medical suction device, comprising: a first suction device 1, a second suction device 2, a multi-circuit assembly 3 and a puncture member 4; the multi-circuit control assembly 3 includes at least a first pipeline 31 and a second pipeline 32 that are connected; the suction end of the first pipeline 31 is connected to the puncture member 4, and the output end of the first pipeline 31 is respectively connected to 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 connected to the first suction device 1; the puncture member 4 is used to inhale the target fluid, and the target fluid flows along the first pipeline 31 and the second pipeline 32 to the first suction device 1, or the target fluid flows along the first pipeline 31, the second suction device 2 and the second pipeline 32 to the first suction device 1.

[0107] The difference between the present embodiment 2 and the embodiment 1 is that a threaded structure 48 is provided at one end of the piercing member 4 away from the first pipeline 31 . The other parts of the present embodiment 2 are the same as those of the embodiment 1 and are not described again here.

[0108] In this embodiment 2, by providing the threaded structure 48 , it is easy to control the puncture depth and direction of the puncture member during the suction process, thereby facilitating operation.

[0109] By adopting the above technical solution, the medical suction device disclosed in this application has the following beneficial effects:

[0110] The present application realizes controllable suction by setting up multiple suction devices. At the same time, there is no need to maintain negative pressure with hands for a long time during suction, which relieves fatigue of medical staff and is simple to operate.

[0111] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A medical suction device, characterized in that: include: A first suction device (1), a second suction device (2), a multi-circuit assembly (3) and a puncture member (4); The multi-circuit assembly (3) comprises at least a first pipeline (31) and a second pipeline (32) that are in communication; The suction end of the first pipeline (31) is in communication with the piercing member (4), the output end of the first pipeline (31) is in communication with the suction end of the second pipeline (32) and the suction end of the second suction device (2), respectively, and the output end of the second pipeline (32) is in communication with the first suction device (1); The first suction device (1) comprises a suction core rod (11) and a fluid accommodating cylinder (12), wherein the suction core rod (11) is slidably connected to the fluid accommodating cylinder (12), and the suction end of the fluid accommodating cylinder (12) is in communication with the second pipeline (32); The second suction device (2) comprises a pressurizing member (21), a resetting elastic member (22) and a storage cavity (23); the pressurizing member (21) is sealedly connected to the inner wall of the storage cavity (23); one end of the resetting elastic member (22) abuts against the pressurizing member (21); and the storage cavity (23) is respectively connected to the first pipeline (31) and the second pipeline (32); The piercing member (4) is used to suck in a target fluid, and the target fluid flows along the first pipeline (31) and the second pipeline (32) to the first suction device (1), or the target fluid flows along the first pipeline (31), the second suction device (2) and the second pipeline (32) to the first suction device (1).

2. The medical suction device according to claim 1, characterized in that: A first one-way valve (34) is provided in the first pipeline (31), and an opening of the first one-way valve (34) faces a side away from the piercing member (4); A second one-way valve (35) is provided in the second pipeline (32), and the opening of the second one-way valve (35) faces the side close to the first suction device (1).

3. The medical suction device according to claim 1, characterized in that: The suction core rod (11) is capable of reciprocating along the inner wall of the fluid accommodating cylinder (12); At least one clamping structure (13) is provided on the suction core rod (11), and a buckle (14) matching the clamping structure (13) is provided on one end of the fluid accommodating cylinder (12) away from the second pipeline (32).

4. The medical suction device according to claim 1, characterized in that: The puncture member (4) comprises a puncture end; The puncture 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 surface angle formed by the first chip surface (41) and the length direction of the puncture member is different from the surface angle formed by the second chip surface (42) and the length direction of the puncture member. The surface angle formed by the first chip surface (41) and the length direction of the puncture member is the same as the surface angle formed by the third chip surface (43) and the length direction of the puncture member. The surface angle formed by the second chip surface (42) and the length direction of the puncture member is equal to the surface angle formed by the fourth chip surface (44) and the length direction of the puncture member.

5. The medical suction device according to claim 1, characterized in that: The pressurizing member (21) is capable of reciprocating along the inner wall of the storage cavity (23); The elastic force direction of the reset elastic member (22) is the same as the reset movement direction of the pressurizing member (21).

6. The medical suction device according to claim 4, characterized in that: The puncture end of the puncture member (4) is provided with a spiral structure (45), and a three-dimensional suction hole (46) is provided at the spiral structure (45). The three-dimensional suction hole (46) is connected to the first pipeline (31), and the three-dimensional suction hole (46) is used to inhale the target fluid.

7. The medical suction device according to claim 6, characterized in that: At least one side wall suction hole (47) is also provided on the side wall of the puncture end, and the opening direction of the side wall suction hole (47) is different from that of the three-dimensional suction hole (46).

8. The medical suction device according to claim 6, characterized in that: The spiral structure (45) comprises at least two spiral grooves, wherein the depression depth in the spiral groove is greater than the depression depth at the periphery of the spiral groove.

9. The medical suction device according to any one of claims 6 to 8, characterized in that: A threaded structure (48) is provided at one end of the piercing member (4) away from the first pipeline (31), and the threaded structure (48) is arranged adjacent to the spiral structure (45).

10. The medical suction device according to claim 1, characterized in that: Also includes a handle (5); The handle (5) is fixedly connected to the multi-circuit assembly (3).

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