Sampling device for liver biopsy puncture

Abstract

The invention relates to the technical field of medical treatment, and provides a sampling device for liver biopsy puncture, the sampling device comprises a puncture sampling mechanism, an anti-blood-overflow mechanism is fixedly installed in the puncture sampling mechanism, the anti-blood-overflow mechanism comprises a detection part and a hemostasis part, the hemostasis part comprises a micro motor, and the micro motor is connected with the detection part. A first bevel gear is fixedly connected to the driving end of the upper end of the micro motor, a second bevel gear is connected to the first bevel gear in a meshed mode, a driving shaft is fixedly connected to the middle of the second bevel gear, gears are fixedly connected to the peripheries of the two ends of the middle of the driving shaft, and racks are connected to the gears in a meshed mode. Through the hemostasis part in the blood overflow prevention mechanism, when a medical worker punctures a blood vessel accidentally, puncture can be stopped in time, a blood coagulation agent is injected into the punctured part of the blood vessel in time, the punctured part of the blood vessel is extruded at the same time, the optimal vascular rupture treatment effect is achieved, the serious bleeding situation is further avoided, and medical accidents are prevented.

Description

Technical Field

[0001] The invention relates to the field of medical technology, and in particular to a sampling device for liver biopsy puncture. Background Art

[0002] Liver puncture biopsy is an important means to obtain liver tissue samples clinically to clarify the diagnosis of liver disease, evaluate disease progression and treatment effects. However, as a solid organ rich in blood vessels, the liver inevitably has the risk of damaging blood vessels and causing bleeding during the puncture process. Traditional liver puncture sampling devices mainly focus on the accuracy of puncture and the effectiveness of obtaining tissue samples, but have obvious shortcomings in dealing with the serious complication of puncture bleeding. First, because B-ultrasound is used to assist in observing the puncture position during puncture, it is not necessarily possible to see the punctured blood vessels in time. Secondly, once the puncture needle accidentally punctures a blood vessel, especially a larger blood vessel, such as the hepatic artery and portal vein branches, it may cause varying degrees of bleeding. Mild bleeding may stop on its own or be controlled by simple treatments such as local compression, but more serious bleeding often requires emergency medical intervention, such as blood transfusion, vascular embolization or even surgical hemostasis, which not only increases the patient's pain and medical costs, but may also lead to a series of serious complications, such as hemorrhagic shock, intraperitoneal blood infection, etc., posing a major threat to the patient's life safety.

[0003] Therefore, we made improvements on this and proposed a sampling device for liver biopsy puncture. Summary of the invention

[0004] (I) The technical problem to be solved by the present invention is: to provide an innovative puncture sampling device that can automatically stop bleeding in time when a blood vessel is accidentally punctured during liver puncture, so as to reduce the risk of bleeding, improve the safety and effectiveness of liver puncture operations, reduce the adverse consequences caused by puncture bleeding, and provide more reliable technical guarantees for the clinical diagnosis and treatment of liver diseases.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned invention object, the present invention provides a sampling device for liver biopsy puncture, comprising a puncture sampling mechanism, wherein an anti-bleeding mechanism is fixedly installed inside the puncture sampling mechanism, wherein the anti-bleeding mechanism comprises a detection part and a hemostasis part, wherein the hemostasis part comprises a micro motor, wherein the upper driving end of the micro motor is fixedly connected with a bevel gear 1, wherein the bevel gear 1 is meshingly connected with a bevel gear 2, wherein the middle part of the bevel gear 2 is fixedly connected with a driving shaft, wherein the outer peripheries of both ends of the middle part of the driving shaft are fixedly connected with gears, wherein the gears are meshingly connected with racks, wherein the lower ends of the racks are fixedly connected with a sealing lower pressure plate, wherein the outer peripheries of the sealing lower pressure plate are slidably connected to the inside of a drug storage bin, wherein a drug guide tube 1 is fixedly connected in the lower end openings of the drug storage bins on both sides, wherein the lower ends of the drug guide tubes are arranged with drug guide tubes 2, wherein the lower ends of the drug guide tubes 2 on the left side are connected with a drug distribution ring, wherein the outer peripheries of the drug distribution ring are evenly provided with drug outlets, and wherein the lower ends of the drug guide tubes 2 on the right side are connected with a blood compression expansion bag.

[0007] Preferably, the detection unit includes a piezoelectric blood flow sensor, which is connected to adapter one via micron-level data line one, adapter two is provided at the upper end of adapter one, and the upper end of adapter two is connected to a control circuit board via micron-level data line two, and the control circuit board is connected to a battery via a wire.

[0008] Preferably, the puncture sampling mechanism includes an anti-slip shell, a limiting seat is fixedly connected to the middle part of the inner upper wall of the anti-slip shell, limiting blocks 1 and 2 are evenly distributed inside the limiting seat, a pressing seat is slidably connected to the inside of the limiting seat, sliding blocks are evenly distributed on the outer lower end of the pressing seat, extrusion ports are evenly opened at the lower end of the pressing seat, an extrusion column is slidably connected to the inside of the pressing seat, guide blocks are evenly distributed on the outer periphery of the extrusion column, a mounting column is rotatably connected to the inside of the lower end of the extrusion column, a spring is fixedly connected to the lower end of the mounting column, the lower end of the anti-slip shell is threadedly connected to the lower shell, an external puncture needle is fixedly connected to the middle part of the lower end of the lower shell, an internal sampling needle is slidably connected to the inside of the external puncture needle, and a sampling groove is opened at the lower end of the internal sampling needle.

[0009] Preferably, the second limiting blocks are alternately distributed on the side close to the adjacent first limiting blocks, and the side of the sliding block away from the pressing seat is slidably connected to the side of the second limiting block close to the pressing seat.

[0010] Preferably, the inner lower portion of the extrusion port is in contact with the upper end of the guide block, and the side of the guide block away from the extrusion column is slidably connected to the inner side of the limit seat.

[0011] Preferably, the outer periphery of the lower end of the mounting column is slidably connected to the inner lower part of the anti-slip shell, the lower end of the spring is fixedly connected to the inner lower wall of the anti-slip shell, and the upper end of the sampling slot is fixedly connected to the middle opening of the lower end of the mounting column.

[0012] Preferably, the control circuit board is connected to the micro motor through a wire, the front end of the micro motor is fixedly connected to the middle of the inner front side of the anti-slip shell, and the rear end of the battery is fixedly connected to the upper end of the inner rear side of the anti-slip shell.

[0013] Preferably, the outer periphery of the adapter 2 is fixedly connected to the lower front opening of the anti-slip shell, and the outer periphery of the adapter 1 is fixedly connected to the front side of the inner bottom wall of the lower shell.

[0014] Preferably, the outer periphery of the upper end of the micron-scale data line 1 is fixedly connected to the inner front side of the lower shell, the lower end of the micron-scale data line 1 is fixedly connected to the inner front side of the external puncture needle, and the outer periphery of the piezoelectric blood flow sensor is fixedly connected to the lower front opening of the external puncture needle.

[0015] Preferably, the peripheries of the blood compression expansion bag and the medicine dispensing ring are fixedly connected to the lower end slot of the external puncture needle, and the blood compression expansion bag is located at the lower side of the medicine dispensing ring.

[0016] The present invention provides a sampling device for liver biopsy puncture, which has the following beneficial effects:

[0017] 1. Through the detection part in the anti-bleeding mechanism, when medical staff use the puncture device for liver biopsy and accidentally puncture the liver or internal blood vessels in the abdomen, they can sense the punctured blood vessels in time, so as to avoid the medical staff failing to see the punctured blood vessels in time during B-ultrasound observation, resulting in serious puncture of the patient's abdomen or liver blood vessels, causing severe bleeding in the patient during the operation.

[0018] 2. Through the hemostasis part in the anti-bleeding mechanism, when medical staff accidentally puncture a blood vessel, they can stop the puncture in time, inject coagulant into the punctured blood vessel in time, and squeeze the punctured blood vessel at the same time to achieve the best treatment effect of blood vessel rupture, further avoid severe bleeding, and prevent medical accidents.

[0019] 3. After using the puncture device, only the lower needle part needs to be replaced, and some more expensive parts on the upper part can be reused after disinfection, which reduces medical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A three-dimensional schematic diagram of a sampling device for liver biopsy puncture provided in the present application;

[0022] Figure 2 A side view and partial cross-section of the internal structure of a sampling device for liver biopsy puncture provided by the present application is a stereoscopic schematic diagram of the first one;

[0023] Figure 3 A partially exploded stereoscopic schematic diagram of a sampling device for liver biopsy puncture provided in the present application;

[0024] Figure 4 A three-dimensional schematic diagram of a limit seat and related components of a sampling device for liver biopsy puncture provided in the present application;

[0025] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 6 The second is a side view and partial cross-section of the internal structure of a sampling device for liver biopsy puncture provided by the present application;

[0027] Figure 7 A third perspective diagram of the internal structure of a sampling device for liver biopsy puncture provided in the present application, in a rear view and partially cut away;

[0028] Figure 8 The present invention provides a second stereoscopic schematic diagram of the internal structure of a sampling device for liver biopsy puncture provided in the present application, with a partial section from the rear.

[0029] In the figure: 1. puncture sampling mechanism; 101. anti-slip shell; 102. limit seat; 103. limit block 1; 104. limit block 2; 105. press seat; 106. slide block; 107. extrusion port; 108. extrusion column; 109. guide block; 1010. mounting column; 1011. spring; 1012. lower shell; 1013. outer puncture needle; 1014. inner sampling needle; 1015. sampling slot; 2. anti-bleeding mechanism; 201. micro motor; 202. bevel gear 1; 203. bevel gear Gear 2; 204, driving shaft; 205, gear; 206, rack; 207, sealed lower pressure plate; 208, drug storage compartment; 209, drug guide tube 1; 2010, drug guide tube 2; 2011, drug distribution ring; 2012, drug outlet; 2013, blood compression expansion bag; 2014, piezoelectric blood flow sensor; 2015, micron-level data line 1; 2016, adapter 1; 2017, adapter 2; 2018, micron-level data line 2; 2019, control circuit board; 2020, battery. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0031] like Figure 1-Figure 8 As shown, the present embodiment proposes a sampling device for liver biopsy puncture, including a puncture sampling mechanism 1, an anti-bleeding mechanism 2 is fixedly installed inside the puncture sampling mechanism 1, the anti-bleeding mechanism 2 includes a detection part and a hemostasis part, the hemostasis part includes a micro motor 201, the upper driving end of the micro motor 201 is fixedly connected to a bevel gear 1 202, the bevel gear 1 202 is meshedly connected to a bevel gear 203, the middle part of the bevel gear 203 is fixedly connected to a drive shaft 204, the outer periphery of both ends of the middle part of the drive shaft 204 is fixedly connected to gears 205, the gears 205 are meshed A rack 206 is connected, and the lower end of the rack 206 is fixedly connected to a sealed lower pressure plate 207, and the outer periphery of the sealed lower pressure plate 207 is slidably connected to the interior of the drug storage bin 208. A drug guide tube 1 209 is fixedly connected to the lower end openings of the drug storage bins 208 on both sides, and a drug guide tube 2 2010 is provided at the lower end of the drug guide tube 1 209. The lower end of the left drug guide tube 2010 is connected to a drug dispensing ring 2011, and drug outlets 2012 are evenly opened on the outer periphery of the drug dispensing ring 2011, and the lower end of the right drug guide tube 2010 is connected to a blood compression expansion bag 2013.

[0032] Preferably, the detection unit includes a piezoelectric blood flow sensor 2014, which is connected to an adapter 2016 via a micron-level data line 2015, an adapter 2017 is provided at the upper end of the adapter 2016, and the upper end of the adapter 2017 is connected to a control circuit board 2019 via a micron-level data line 2018, and the control circuit board 2019 is connected to a battery 2020 via a wire.

[0033] Preferably, the control circuit board 2019 is connected to the micro motor 201 through a wire, the front end of the micro motor 201 is fixedly connected to the middle of the inner front side of the anti-slip shell 101, and the rear end of the battery 2020 is fixedly connected to the upper end of the inner rear side of the anti-slip shell 101.

[0034] Preferably, the outer periphery of the second adapter 2017 is fixedly connected to the lower front opening of the anti-slip shell 101 , and the outer periphery of the first adapter 2016 is fixedly connected to the front side of the inner bottom wall of the lower shell 1012 .

[0035] Preferably, the outer periphery of the upper end of the micron-scale data line 2015 is fixedly connected to the inner front side of the lower shell 1012, the lower end of the micron-scale data line 2015 is fixedly connected to the inner front side of the external needle 1013, and the outer periphery of the piezoelectric blood flow sensor 2014 is fixedly connected to the lower front opening of the external needle 1013.

[0036] Preferably, the peripheries of the blood compression expansion bag 2013 and the medicine dispensing ring 2011 are fixedly connected to the lower end slot of the external puncture needle 1013 , and the blood compression expansion bag 2013 is located at the lower side of the medicine dispensing ring 2011 .

[0037] Specifically, when the lower end of the external puncture needle 1013 punctures the blood vessels on the patient's liver or other parts of the abdomen, the piezoelectric blood flow sensor 2014 senses the blood overflow and quickly transmits the signal to the control circuit board 2019 through the micron-level data line 1 2015, the adapter 1 2016, the adapter 2 2017 and the micron-level data line 2 2018. The control circuit board 2019 controls the micro motor 201 to start, drives the bevel gear 2 203 to rotate through the bevel gear 1 202, and then drives the gear 205 to rotate through the drive shaft 204, and then drives the gear 205 to rotate through the rack. 206 drives the sealed lower pressure plates 207 on both sides to descend inside the medicine storage bin 208. At this time, the coagulant inside the medicine storage bin 208 on the left quickly enters the inside of the medicine dispensing ring 2011 through the left medicine guide tube 1 209 and the medicine guide tube 2 2010, and is evenly sprayed to the punctured blood vessel through the medicine outlet 2012 to quickly stop bleeding of the blood vessel wound. At the same time, the physiological saline inside the medicine storage bin 208 on the right is quickly injected into the inside of the blood compression expansion bag 213 through the right medicine guide tube 1 209 and the medicine guide tube 2 2010, so that the lower end of the blood compression expansion bag 213 is expanded into The outer puncture needle 1013 is shaped like an umbrella, and the blood vessel wound is quickly squeezed. At the same time, the lower end of the outer puncture needle 1013 is lifted out of the punctured blood vessel, so that the blood compression expansion bag 2013 completely squeezes the blood vessel wound and generates resistance at the same time, so that the medical staff can know that the blood vessel is punctured in time, stop puncturing, and maintain the state until the coagulant takes effect and stops the blood vessel wound. Through the detection part in the anti-bleeding mechanism 2, when the medical staff uses the puncture device for liver biopsy puncture and accidentally punctures the liver or the internal blood vessels of the abdomen, the punctured blood vessel can be sensed in time, so as to avoid the medical staff failing to see the punctured blood vessel in time during B-ultrasound observation. This causes severe puncture of the patient's abdomen or liver blood vessels, resulting in severe bleeding during the operation. In addition, through the hemostasis part in the anti-overflow mechanism 2, when the medical staff accidentally punctures the blood vessel, the puncture can be stopped in time, and a coagulant can be injected into the punctured blood vessel in time, and the punctured blood vessel can be squeezed at the same time to achieve the best treatment effect of blood vessel rupture, further avoid severe bleeding, and prevent medical accidents. At the same time, after use, the puncture device only needs to replace the lower needle component, and some of the more expensive upper components can be reused after disinfection, thereby reducing medical costs.

[0038] Preferably, the puncture sampling mechanism 1 includes an anti-slip shell 101, a limit seat 102 is fixedly connected to the middle of the inner upper wall of the anti-slip shell 101, a limit block 103 and a limit block 104 are evenly distributed inside the limit seat 102, a pressing seat 105 is slidably connected inside the limit seat 102, a slider 106 is evenly distributed on the outer lower end of the pressing seat 105, an extrusion port 107 is evenly opened at the lower end of the pressing seat 105, and an extrusion column 108 is slidably connected inside the pressing seat 105, Guide blocks 109 are evenly distributed on the periphery of the extrusion column 108, the lower end of the extrusion column 108 is rotatably connected to the mounting column 1010, the lower end of the mounting column 1010 is fixedly connected to a spring 1011, the lower end of the anti-slip shell 101 is threadedly connected to the lower shell 1012, the middle of the lower end of the lower shell 1012 is fixedly connected to an external puncture needle 1013, the inner part of the external puncture needle 1013 is slidably connected to the inner part of the internal sampling needle 1014, and the lower end of the internal sampling needle 1014 is provided with a sampling groove 1015.

[0039] Preferably, the second limiting blocks 104 are alternately distributed on the side close to the adjacent first limiting blocks 103 , and the side of the slider 106 away from the pressing seat 105 is slidably connected to the side of the second limiting block 104 close to the pressing seat 105 .

[0040] Preferably, the inner lower portion of the extrusion port 107 is in contact with the upper end of the guide block 109 , and the side of the guide block 109 away from the extrusion column 108 is slidably connected to the inner side of the limit seat 102 .

[0041] Preferably, the outer periphery of the lower end of the mounting column 1010 is slidably connected to the inner lower part of the anti-slip shell 101, the lower end of the spring 1011 is fixedly connected to the inner lower wall of the anti-slip shell 101, and the upper end of the sampling slot 1015 is fixedly connected to the middle opening of the lower end of the mounting column 1010.

[0042] Specifically, when the sampling device is used for liver puncture sampling, the lower shell 1012 is threadedly installed to the lower end of the anti-slip shell 101 and installed tightly, so that the upper and lower adapters 2017 and 2016 fit together, and the upper and lower drug guide tubes 2010 and 209 are connected. Similarly, the upper end of the inner sampling needle 1014 is threadedly installed to the lower end of the mounting column 1010. The pressing seat 105 is pressed once, and the extrusion column 108 is driven to move downward and rotate through the extrusion port 107 and the guide block 109, so that the guide block 109 The upper end is stuck in the lower end of the limit block 104. After preoperative treatment of the patient's abdominal puncture position, B-ultrasound is used to assist puncture and perform puncture. When puncture reaches the designated position, the pressing seat 105 is pressed again. At this time, the inner sampling needle 1014 extends from the inside of the outer puncture needle 1013, hooks out the sampling tissue through the sampling groove 1015, releases the pressing seat 105, and drives the mounting column 1010 to rise through the spring 1011, thereby driving the inner sampling needle 1014 to rebound quickly, cut out the sampling tissue, pull out the sampling device, and complete the liver biopsy sampling.

[0043] Working principle: When using the sampling device for liver puncture sampling, the lower shell 1012 is now threadedly installed to the lower end of the anti-slip shell 101 and installed tightly, so that the upper and lower adapters 2017 and 2016 fit together, and the upper and lower drug guide tubes 2010 and 209 are connected. Similarly, the upper end of the inner sampling needle 1014 is threadedly installed to the lower end of the mounting column 1010. First, press the pressing seat 105 once, and drive the squeezing column 108 to move down and rotate through the squeezing port 107 and the guide block 109, so that the upper end of the guide block 109 is stuck at the lower end of the limit block 104. After preoperative treatment of the patient's abdominal puncture position, use B-ultrasound to assist puncture, and perform puncture. When the puncture reaches the specified position, press the pressing seat 10 once more. 5. At this time, the inner sampling needle 1014 extends from the inner part of the outer puncture needle 1013, hooks the sampled tissue through the sampling groove 1015, releases the pressing seat 105, drives the mounting column 1010 to rise through the spring 1011, and then drives the inner sampling needle 1014 to rebound quickly, cuts the sampled tissue, pulls out the sampling device, and completes the liver biopsy sampling. When the lower end of the outer puncture needle 1013 punctures the blood vessels on the patient's liver or other parts of the abdomen, the piezoelectric blood flow sensor 2014 senses the blood flow overflow and quickly transmits the signal to the control circuit board 2019 through the micron-level data line 1 2015, the adapter 1 2016, the adapter 2 2017 and the micron-level data line 2 2018. The control circuit board 2019 controls the micro motor 20 1 is started, bevel gear 1 202 drives bevel gear 2 203 to rotate, and then drives gear 205 to rotate through drive shaft 204, and then drives sealed lower pressure plates 207 on both sides to descend inside drug storage bin 208 through rack 206. At this time, the blood coagulant inside drug storage bin 208 on the left side quickly enters the inside of drug dispensing ring 2011 through drug guide tube 1 209 and drug guide tube 2 2010 on the left side, and is evenly sprayed to the punctured blood vessel through drug outlet 2012 to quickly stop bleeding of the blood vessel wound. At the same time, physiological saline inside drug storage bin 208 on the right side is quickly injected into the inside of blood compression expansion bag 213 through drug guide tube 1 209 and drug guide tube 2 210 on the right side, so that the lower end of blood compression expansion bag 213 is opened into an umbrella shape, and the blood is quickly squeezed. The blood vessel wound is stopped, and at the same time, the lower end of the external puncture needle 1013 is lifted out from the punctured blood vessel, so that the blood compression expansion bag 2013 completely squeezes the blood vessel wound and generates resistance at the same time, so that the medical staff can know in time that the blood vessel is punctured, stop puncturing, and maintain the state until the coagulant takes effect and stops the blood vessel wound. Through the detection part in the anti-bleeding mechanism 2, when the medical staff uses the puncture device for liver biopsy and accidentally punctures the liver or the internal blood vessels of the abdomen, they can sense the punctured blood vessel in time, so as to avoid the medical staff failing to see the punctured blood vessel in time during B-ultrasound observation, resulting in serious puncture of the patient's abdomen or liver blood vessels, causing the patient to bleed severely during the operation. In addition, through the hemostasis part in the anti-bleeding mechanism 2, when the medical staff accidentally punctures the blood vessel,The puncture can be stopped in time, and a coagulant can be injected into the punctured blood vessel in time, while the punctured blood vessel can be squeezed to achieve the best treatment effect of blood vessel rupture, further avoiding severe bleeding and preventing medical accidents. At the same time, after the puncture device is used, only the lower needle part needs to be replaced, and some of the more expensive parts on the upper part can be reused after disinfection, which reduces medical costs.

[0044] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A sampling device for liver biopsy puncture, comprising a puncture sampling mechanism (1), characterized in that: The puncture sampling mechanism (1) is fixedly provided with an anti-bleeding mechanism (2) inside, the anti-bleeding mechanism (2) comprises a detection unit and a hemostasis unit, the hemostasis unit comprises a micro motor (201), the upper driving end of the micro motor (201) is fixedly connected to a bevel gear 1 (202), the bevel gear 1 (202) is meshingly connected to a bevel gear 2 (203), the middle of the bevel gear 2 (203) is fixedly connected to a drive shaft (204), the outer peripheries of both ends of the middle of the drive shaft (204) are fixedly connected to gears (205), the gears (205) are meshingly connected to racks (206), the racks (206) are fixedly connected to the drive shaft (204), and the gears (205) are meshingly connected to the racks (206). ) are fixedly connected to the lower ends of the sealed lower pressure plates (207), the outer peripheries of the sealed lower pressure plates (207) are slidably connected to the interior of the drug storage bins (208), the lower end openings of the drug storage bins (208) on both sides that are close to each other are fixedly connected to drug guide tubes 1 (209), the lower ends of the drug guide tubes 1 (209) are provided with drug guide tubes 2 (2010), the lower end of the drug guide tubes 2 (2010) on the left side is connected to a drug distribution ring (2011), the outer periphery of the drug distribution ring (2011) is evenly provided with drug outlets (2012), and the lower end of the drug guide tubes 2 (2010) on the right side is connected to a blood compression expansion bag (2013).

2. A sampling device for liver biopsy puncture according to claim 1, characterized in that: The detection unit includes a piezoelectric blood flow sensor (2014), the piezoelectric blood flow sensor (2014) is connected to an adapter 1 (2016) via a micron-level data line 1 (2015), an adapter 2 (2017) is provided at the upper end of the adapter 1 (2016), the upper end of the adapter 2 (2017) is connected to a control circuit board (2019) via a micron-level data line 2 (2018), and the control circuit board (2019) is connected to a battery (2020) via a wire.

3. A sampling device for liver biopsy puncture according to claim 1, characterized in that: The puncture sampling mechanism (1) comprises an anti-slip shell (101), a limit seat (102) is fixedly connected to the middle of the inner upper wall of the anti-slip shell (101), a limit block 1 (103) and a limit block 2 (104) are evenly distributed inside the limit seat (102), a pressing seat (105) is slidably connected inside the limit seat (102), sliding blocks (106) are evenly distributed on the outer lower end of the pressing seat (105), extrusion ports (107) are evenly opened at the lower end of the pressing seat (105), and an extrusion column (108) is slidably connected inside the pressing seat (105). The outer circumference of the extrusion column (108) is evenly distributed with guide blocks (109); the lower end of the extrusion column (108) is rotatably connected to a mounting column (1010); the lower end of the mounting column (1010) is fixedly connected to a spring (1011); the lower end of the anti-slip shell (101) is threadedly connected to a lower shell (1012); the middle part of the lower end of the lower shell (1012) is fixedly connected to an external puncture needle (1013); the inner part of the external puncture needle (1013) is slidably connected to an internal sampling needle (1014); and the lower end of the internal sampling needle (1014) is provided with a sampling groove (1015).

4. A sampling device for liver biopsy puncture according to claim 3, characterized in that: The second limiting blocks (104) are alternately distributed on the side close to the adjacent first limiting blocks (103), and the side of the sliding block (106) away from the pressing seat (105) is slidably connected to the side of the second limiting block (104) close to the pressing seat (105).

5. A sampling device for liver biopsy puncture according to claim 3, characterized in that: The inner lower part of the extrusion port (107) is in contact with the upper end of the guide block (109), and the side of the guide block (109) away from the extrusion column (108) is slidably connected to the inner side of the limit seat (102).

6. A sampling device for liver biopsy puncture according to claim 3, characterized in that: The outer periphery of the lower end of the mounting column (1010) is slidably connected to the inner lower part of the anti-slip shell (101), the lower end of the spring (1011) is fixedly connected to the inner lower wall of the anti-slip shell (101), and the upper end of the sampling groove (1015) is fixedly connected to the middle opening of the lower end of the mounting column (1010).

7. A sampling device for liver biopsy puncture according to claim 3, characterized in that: The control circuit board (2019) is connected to the micro motor (201) via a wire, the front end of the micro motor (201) is fixedly connected to the middle of the inner front side of the anti-slip shell (101), and the rear end of the storage battery (2020) is fixedly connected to the upper end of the inner rear side of the anti-slip shell (101).

8. A sampling device for liver biopsy puncture according to claim 3, characterized in that: The outer periphery of the adapter 2 (2017) is fixedly connected to the lower front opening of the anti-slip shell (101), and the outer periphery of the adapter 1 (2016) is fixedly connected to the front side of the inner bottom wall of the lower shell (1012).

9. A sampling device for liver biopsy puncture according to claim 3, characterized in that: The outer periphery of the upper end of the micrometer-scale data line 1 (2015) is fixedly connected to the inner front side of the lower shell (1012), the lower end of the micrometer-scale data line 1 (2015) is fixedly connected to the inner front side of the external needle (1013), and the outer periphery of the piezoelectric blood flow sensor (2014) is fixedly connected to the lower front opening of the external needle (1013).

10. A sampling device for liver biopsy puncture according to claim 3, characterized in that: The peripheries of the blood compression expansion bag (2013) and the medicine dispensing ring (2011) are fixedly connected to the lower end slot of the external puncture needle (1013), and the blood compression expansion bag (2013) is located at the lower side of the medicine dispensing ring (2011).

Images