Thrombus aspiration pump capable of quickly replacing consumables and use method thereof

Abstract

The present invention provides a thrombus aspiration pump with rapidly replaceable consumables and a method of using the same, comprising a suction pump main unit, a liquid storage tank, a connecting pipe and a suction catheter; the suction pump main unit is provided with a liquid storage tank slot; a main unit negative pressure interface is provided at the bottom of the liquid storage tank slot; a liquid storage tank negative pressure interface is provided on the liquid storage tank; the liquid storage tank negative pressure interface and the main unit negative pressure interface are detachably connected; the liquid storage tank is connected to the suction catheter via a connecting pipe. The present invention reduces the time for replacing and connecting the consumables of the suction pump before surgery or during surgery. "Time is life" can enable medical staff to be faster and focus more on the process of treating patients.

Description

Technical Field

[0001] The present invention relates to the technical field of intravascular thrombus aspiration pumps, and in particular to a thrombus aspiration pump with rapidly replaceable consumables and a method of using the pump. Background Art

[0002] Thrombosis is a common clinical disease. The main hazards of thrombosis are: 1) thrombus blocking the blood vessel lumen, causing obstruction of distal blood return; 2) thrombus detachment, leading to serious hazards such as pulmonary embolism, cerebral embolism and myocardial infarction. Thrombus aspiration is a method of removing the thrombus by directly sucking the thrombus into the catheter under negative pressure. The advantages of catheter intervention for thrombus aspiration are (1) minimally invasive. Patients with high-risk embolism are in critical condition and often find it difficult to tolerate traditional open surgery. Relatively speaking, interventional treatment completes the catheter aspiration operation under local anesthesia, which is less invasive and has a faster recovery; (2) rapid effectiveness.

[0003] At present, the development of thrombus aspiration technology focuses on the following aspects:

[0004] 1. Aspiration catheter and overall system composition – The aspiration catheter overall system consists of a guide or balloon guide catheter, a delivery catheter and an aspiration catheter, an aspiration pump, a thrombus plaque collector and a thrombus plaque fragmentation device (US2019 / 0216476A1 – Penumbar Inc.)

[0005] 2. The suction catheter has two channels for suction and flushing. The control box is connected to the two channels of the catheter to complete the suction and flushing under synchronous control (US10944944B2-Boston Scientific Scimed Inc; US9332999B2-CovidientLP); thereby preventing the suction channel from being blocked and the need to remove the catheter to clear the thrombus plaque and reinsert the catheter.

[0006] 3. Place a strain gauge or differential pressure sensor on the suction catheter. The controller calculates the flow through the pressure difference to monitor whether the front end of the suction catheter is in contact with the clot. If there is no contact, the on-off valve in the suction connection tube is automatically closed to stop suction. If the catheter is blocked, start pulsed suction (US6022747-Bayer CO; US16 / 977431-Penumbar Inc).

[0007] A Chinese invention patent document with publication number CN113289092A discloses a suction device and a suction method synchronized with a pulse, comprising: a suction pump, a suction pipeline and a pulse detection device; the pulse detection device is electrically connected to a controller of the suction pump, and the suction pump performs suction through the suction pipeline; the suction pump provides a pulse pressure; the controller adjusts the pulse pressure according to the pulse signal detected by the pulse detection device, so that the pulse start time of the pulse pressure and the systolic pressure of the pulse are synchronized within a preset time error range.

[0008] A Chinese invention patent document with publication number CN113331911A discloses a fluid suction device, medical device and blood vessel suction method for controlling suction pressure, wherein a suction pump is connected to the suction pipeline to provide pulse pressure to suction fluid; a fluid flow rate, pressure or flow sensor is arranged in the suction pump, in the suction pipeline or at any position through which the fluid flows between the suction pump and the suction pipeline, and the fluid flow rate, pressure or flow sensor is electrically connected to the controller of the suction pump; wherein the resistance in the suction pipeline is obtained according to the result detected by the fluid flow rate, pressure or flow sensor; when it is detected that the resistance increases by more than a preset value, the suction efficiency of the suction pump is increased.

[0009] like Figure 1 and Figure 2 The figure shows the thrombus aspiration pumps of Penumbra and Medtronic. The aspiration pressure and frequency control are both at the main end of the aspiration pump (belonging to the non-clean area of ​​the catheter room).

[0010] The consumables of the negative pressure suction pump for thrombus aspiration that are currently on the market or have been published are as follows: 1) There is a connecting tube between the fluid reservoir and the suction pump host; 2) There is a filter membrane between the fluid reservoir and the suction pump host; 3) There is a connecting tube between the fluid reservoir and the suction catheter entering the blood vessel.

[0011] like Figure 8 , Fig. 9 and Fig.10As shown, the currently marketed or published negative pressure suction pump host for thrombus aspiration (referred to as: the current negative pressure suction pump host 1) is connected to the currently marketed or published negative pressure suction pump for thrombus aspiration liquid storage tank (referred to as: the current negative pressure suction pump liquid storage tank 3) through the currently marketed or published negative pressure suction pump filter membrane (referred to as the current negative pressure suction pump filter membrane 9), and the current negative pressure suction pump liquid storage tank 3 is connected to the connecting tube 7. When in use, connect the interface 8 at one end of the filter membrane to the currently marketed or published The negative pressure interface of the negative pressure suction pump host for thrombus aspiration (abbreviated as: the current negative pressure suction pump host negative pressure interface 2) is connected to the interface 10 at the other end of the filter membrane and the negative pressure interface of the negative pressure suction pump reservoir tank for thrombus aspiration that has been put on the market or published (abbreviated as: the current negative pressure suction pump reservoir tank negative pressure interface 4); and then the negative pressure suction pump reservoir tank connection pipe interface (abbreviated as: the current negative pressure suction pump reservoir tank connection pipe interface 5) that has been put on the market or published is connected to the connection pipe interface 6. The entire negative pressure suction circuit is formed.

[0012] With respect to the above-mentioned prior art, the inventors believe that these consumables (connecting tubes, liquid storage tanks, filter membranes, etc.) should be replaced and connected one by one before each operation. Summary of the invention

[0013] In view of the defects in the prior art, an object of the present invention is to provide a thrombus aspiration pump with rapidly replaceable consumables and a method of using the same.

[0014] A thrombus aspiration pump with rapidly replaceable consumables provided by the present invention comprises a suction pump main unit, a liquid storage tank, a connecting tube and a suction catheter;

[0015] The suction pump host is provided with a liquid storage tank;

[0016] A host negative pressure interface is provided at the bottom of the liquid storage tank;

[0017] The liquid storage tank is provided with a liquid storage tank negative pressure interface;

[0018] The negative pressure interface of the liquid storage tank and the negative pressure interface of the host are detachably connected;

[0019] The liquid storage tank is connected to the suction catheter through a connecting pipe.

[0020] Preferably, a controller is provided on the connecting pipe;

[0021] The controller and the host are connected by wire or wirelessly.

[0022] Preferably, the liquid storage tank comprises an inner tank and an outer tank;

[0023] The bottom of the inner tank is a negative pressure interface of the liquid storage tank;

[0024] The top of the inner tank is connected to the outer tank.

[0025] Preferably, a limiting plate is provided at the bottom of the liquid storage tank to limit the bottom of the inner tank.

[0026] Preferably, a first clamping ring is provided on the inner side wall of the limiting plate;

[0027] A first clamping groove which is clamped with the first clamping ring is arranged on the outer side wall of the bottom of the inner tank.

[0028] Preferably, a filter membrane and a support tube are provided in the inner tank;

[0029] The filter membrane is coated on the support tube.

[0030] Preferably, the portion of the support tube contacting the filter membrane is porous.

[0031] Preferably, the support tube is detachably arranged in the inner tank;

[0032] A second clamping ring is provided on the inner side wall of the inner tank;

[0033] The outer side wall of the support tube is provided with a second clamping groove which is clamped with the second clamping ring.

[0034] Preferably, a limiting portion is provided on the inner side wall of the inner tank to prevent the support tube from being over-installed;

[0035] The support tube is provided with a conflicting portion that conflicts with the limiting portion.

[0036] According to a method for using a thrombus aspiration pump with quickly replaceable consumables provided by the present invention, the thrombus aspiration pump with quickly replaceable consumables is used, comprising the following steps:

[0037] Installation steps: insert the liquid storage tank vertically into the liquid storage tank slot, and connect the negative pressure interface of the liquid storage tank with the negative pressure interface of the host;

[0038] Steps for replacing consumables: Pull the liquid storage tank out of the liquid storage tank slot, and separate the negative pressure interface of the liquid storage tank from the negative pressure interface of the host.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The present invention reduces the time for replacing and connecting the suction pump consumables before or during surgery. “Time is life” enables medical staff to be faster and focus more on the process of treating patients.

[0041] 2. The present invention moves the suction mode control to the area that the doctor can reach, and implements it on the suction connection tube (the clean area of ​​the catheter room), so that the doctor can control the suction parameters directly near the catheter (i.e. the sterile area of ​​the catheter room). Instead of the doctor conveying the instructions, the assistant adjusts the suction parameters on the host side (i.e. the non-sterile area of ​​the catheter room);

[0042] 3. The present invention reduces the requirements for consumables during or after the connection of surgical instruments. For example, it reduces the leakage problem that may be caused by the connection of consumables and improves the success rate of surgical instrument use; it also reduces the treatment of "direct infectious medical waste;

[0043] 4. The present invention makes the whole machine look more integrated and is more conducive to the appearance design of the whole machine;

[0044] 5. The present invention has simpler installation steps, which reduces or even completely avoids the possibility of misoperation: for example, connecting the pipes in reverse; connecting the connecting pipes directly to the main unit, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0046] Figure 1 It is a first schematic diagram of an existing thrombus aspiration pump;

[0047] Figure 2 A second schematic diagram of an existing thrombus aspiration pump;

[0048] Figure 3 is a cross-sectional view of the thrombus aspiration pump of the present invention;

[0049] Figure 4 It is a partial exploded view of the thrombus aspiration pump of the present invention;

[0050] Figure 5 This is an assembly flow chart of the thrombus aspiration pump of the present invention;

[0051] Figure 6 This is a diagram showing the opening of the flap of the thrombus aspiration pump of the present invention;

[0052] Figure 7 This is a diagram showing the cover of the thrombus aspiration pump of the present invention being closed;

[0053] Figure 8 This is a diagram showing the main unit and liquid storage tank of a negative pressure suction pump for thrombus aspiration that has been put on the market or published;

[0054] Fig. 9 This is a diagram of the connection tube of a negative pressure suction pump for thrombus aspiration that has been put on the market or published;

[0055] Fig.10This is a negative pressure suction pump filter membrane for thrombus aspiration that has been launched on the market or published;

[0056] Fig.11 This is a diagram of the main unit of the thrombus aspiration pump of the present invention;

[0057] Fig.12 This is a diagram of the fluid storage tank of the thrombus aspiration pump of the present invention;

[0058] Fig.13 This is a directional diagram of the installation of the liquid storage tank of the present invention toward the main engine;

[0059] Fig.14 This is an assembly diagram of the filter membrane and the filter membrane support tube of the present invention;

[0060] Fig.15 It is an installation diagram of the assembly after the liquid storage tank body, the filter membrane and the support tube are hot-melted in the present invention;

[0061] Fig.16 It is a diagram of the connection pipe with the controller;

[0062] Fig.17 is a cross-sectional view of the liquid storage tank;

[0063] Fig.18 This is a diagram of the installation process of the thrombus aspiration pump of the present invention.

[0064] Reference numerals:

[0065] Currently negative pressure suction pump host 1 host negative pressure interface 12

[0066] At present, negative pressure suction pump host negative pressure interface 2 liquid storage tank 13

[0067] Currently negative pressure suction pump tank 3 tank negative pressure interface 14

[0068] At present, negative pressure suction pump storage tank negative pressure interface 4 filter membrane 15

[0069] At present, the negative pressure suction pump storage tank connection pipe interface 5 support pipe 16

[0070] Connecting pipe interface 6 Assembly 17

[0071] Connecting tube 7 Consumable components 18

[0072] Filter membrane one end interface 8 connecting tube 19

[0073] Currently negative pressure suction pump filter membrane 9 controller 20

[0074] Interface 10 at the other end of the filter membrane Flip cover 21

[0075] Suction pump host 11 DETAILED DESCRIPTION

[0076] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0077] The embodiment of the present invention discloses a thrombus aspiration pump capable of quickly replacing consumables, such as Figure 3 , Figure 4 and Figure 5 As shown, it includes a suction pump main unit 11, a liquid storage tank 13, a connecting pipe 19, a flip cover 21 and a suction catheter. The flip cover 21 is hinged to the suction pump main unit 11. The design of the flip cover 21 can save the action of installing the pipe on the pinch valve, making the operation easier and making the whole machine look more integrated. The connecting pipe 19 and the liquid storage tank 13 adopt a conical interface interference fit, and can be sealed by directly inserting.

[0078] like Fig.11 As shown, a liquid storage tank 13 is provided on the suction pump host 11. A host negative pressure interface 12 is provided at the bottom of the liquid storage tank 13. Fig.12 and 13 As shown, a liquid storage tank negative pressure interface 14 is provided on the liquid storage tank 13. The liquid storage tank negative pressure interface 14 and the host negative pressure interface 12 are detachably connected.

[0079] The liquid storage tank 13 is connected to the suction conduit via a connecting pipe 19 .

[0080] A controller 20 is provided on the connecting pipe 19. The controller 20 is connected to the host computer by wire or wirelessly.

[0081] like Fig.17 As shown, the liquid storage tank 13 includes an inner tank and an outer tank; the bottom of the inner tank is a negative pressure interface 14 for the liquid storage tank; the top of the inner tank is connected to the outer tank. The inner tank and the outer tank are integrally formed; the outer tank is arranged around the inner tank, and the outer tank and the inner tank are arranged coaxially; the connection between the bottom of the outer tank and the outer side wall of the inner tank is arranged in a truncated cone; the bottom of the outer tank extends to contact the bottom side wall of the tank of the liquid storage tank 13.

[0082] A limiting plate is provided at the bottom of the liquid storage tank 13 to limit the bottom of the inner tank. The inner side wall of the limiting plate contacts the outer wall of the inner tank. A first clamping ring is provided on the inner side wall of the limiting plate; and a first clamping groove that is mutually clamped with the first clamping ring is provided on the outer side wall of the bottom of the inner tank.

[0083] like Fig.14 and Fig.15As shown, a filter membrane 15 and a support tube 16 are arranged in the inner tank; the filter membrane 15 is coated on the support tube 16. The filter membrane 15 and the support tube 16 are heat-melted to form an assembly 17 of the filter membrane 15 and the support tube 16 after heat melting. The part of the support tube 16 contacting the filter membrane 15 is arranged in a porous shape. The support tube 16 is detachably arranged in the inner tank; a second clamping ring is arranged on the inner side wall of the inner tank; and a second clamping groove that is mutually clamped with the second clamping ring is arranged on the outer side wall of the support tube 16.

[0084] A limiting portion is provided on the inner wall of the inner tank to prevent the support tube 16 from being over-installed; and an interfering portion that interferes with the limiting portion is provided on the support tube 16 .

[0085] The purpose of the present invention is achieved by the following technical methods: 1. The liquid storage tank 13 of the present invention is connected with the suction pump main unit 11 by a plug-in. 2. The filter membrane 15 between the liquid storage tank 13 and the suction pump main unit 11 is implemented in the liquid storage tank 13. Before each patient or operation, only the liquid storage tank 13 needs to be replaced. The filter membrane is built into the liquid storage tank 13. 3. Figure 4 and Fig.16 As shown, there is a connecting tube 19 with a controller 20 between the liquid storage tank 13 and the suction catheter entering the blood vessel. The doctor can adjust the suction mode, negative pressure intensity and suction frequency according to the actual situation in time. The controller 20 can also be connected to the host through wireless, including but not limited to Bluetooth, WIFI, etc. ... Convenient operation.

[0086] like Fig.18 As shown, the flip cover 21 is first opened, the consumable component 18 (liquid storage tank 13, connecting tube 19) is inserted, and then the flip cover 21 is closed.

[0087] like Figure 6 As shown, the flip cover 21 is opened, the liquid storage tank 13 is installed into the main unit, and the suction catheter is connected to the liquid storage tank 13.

[0088] like Figure 7 As shown, the flip cover 21 is closed and the machine starts to work. The doctor can control the negative pressure intensity and suction frequency of the machine through the controller 20.

[0089] The embodiment of the present invention further discloses a method for using a thrombus aspiration pump with quickly replaceable consumables, and using the thrombus aspiration pump with quickly replaceable consumables includes the following steps:

[0090] Installation steps: vertically insert the liquid storage tank 13 into the liquid storage tank 13 slot, and connect the liquid storage tank negative pressure interface 14 with the host negative pressure interface 12.

[0091] Steps for replacing consumables: pull the liquid storage tank 13 out of the liquid storage tank 13 slot, and separate the liquid storage tank negative pressure interface 14 from the host negative pressure interface 12. The consumable assembly 18 includes the liquid storage tank 13 and the connecting pipe 19.

[0092] The liquid storage tank 13 is vertically inserted into the main machine, and the negative pressure interface of the liquid storage tank 13 is connected to the negative pressure interface of the main machine. The main machine is connected to the interface of the liquid storage tank 13.

[0093] The filter membrane 15 is put on the support tube 16 and the two are fixed by heat melting; the assembly 17 after the filter membrane 15 and the support tube 16 are fixed by heat melting is inserted into the main body of the liquid storage tank 13. That is, the filter membrane 15 is installed inside the liquid storage tank 13.

[0094] The negative pressure of the host passes through the negative pressure interface of the liquid storage tank 13, passes through the filter membrane 15, and reaches the outside of the liquid storage tank 13.

[0095] Installation process: open the main unit cover 21, insert the liquid storage tank 13 assembly into the main unit, close the cover 21, and then start working.

[0096] Process for replacing consumables: open the main unit cover 21, pull out the liquid storage tank 13 assembly upwards, reinsert the new liquid storage tank 13 assembly, and close the cover 21 to complete the consumable replacement.

[0097] The present invention relates to a suction pump that can quickly replace consumables, and the suction pump mode such as negative pressure intensity, suction frequency, etc. can be controlled at the doctor's end. Intravascular thrombus suction consists of three parts: a suction catheter (entering the blood vessel), a connecting tube 19 connecting the suction catheter and the suction pump, and a suction pump. The present invention relates to the connecting tube 19 and the suction pump.

[0098] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0099] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A thrombus aspiration pump with rapidly replaceable consumables, characterized in that: It comprises a suction pump main unit (11), a liquid storage tank (13), a connecting pipe (19) and a suction catheter; The suction pump main unit (11) is provided with a liquid storage tank (13); A host negative pressure interface (12) is provided at the bottom of the liquid storage tank (13); The liquid storage tank (13) is provided with a liquid storage tank negative pressure interface (14); The liquid storage tank negative pressure interface (14) and the host negative pressure interface (12) are detachably connected; The liquid storage tank (13) is connected to the suction catheter via a connecting pipe (19); The connecting pipe (19) is provided with a controller (20); The controller (20) is connected to the host via wire or wireless connection; The liquid storage tank (13) comprises an inner tank and an outer tank; The bottom of the inner tank is a negative pressure interface (14) for the liquid storage tank; The top of the inner tank is connected to the outer tank; A filter membrane (15) and a support tube (16) are arranged in the inner tank; The filter membrane (15) is coated on the support tube (16); The portion of the support tube (16) that contacts the filter membrane (15) is arranged in a porous shape.

2. The thrombus aspiration pump with rapidly replaceable consumables according to claim 1, characterized in that: A limiting plate is provided at the bottom of the liquid storage tank (13) for limiting the bottom of the inner tank.

3. The thrombus aspiration pump with rapidly replaceable consumables according to claim 2, characterized in that: A first clamping ring is provided on the inner side wall of the limiting plate; A first clamping groove which is clamped with the first clamping ring is arranged on the outer side wall of the bottom of the inner tank.

4. The thrombus aspiration pump with rapidly replaceable consumables according to claim 1, characterized in that: The support tube (16) is detachably arranged in the inner tank; A second clamping ring is provided on the inner side wall of the inner tank; A second clamping groove for clamping with a second clamping ring is provided on the outer side wall of the support tube (16).

5. The thrombus aspiration pump with rapidly replaceable consumables according to claim 4, characterized in that: A limiting portion is provided on the inner side wall of the inner tank to prevent the support tube (16) from being over-installed; The support tube (16) is provided with a conflicting portion that conflicts with the limiting portion.

6. A method for using a thrombus aspiration pump capable of quickly replacing consumables, characterized in that: The thrombus aspiration pump with rapidly replaceable consumables as claimed in any one of claims 1 to 5 comprises the following steps: Installation steps: vertically insert the liquid storage tank (13) into the liquid storage tank (13) slot, and connect the liquid storage tank negative pressure interface (14) with the host negative pressure interface (12); Steps for replacing consumables: Pull the liquid storage tank (13) out of the liquid storage tank (13) slot, and separate the liquid storage tank negative pressure interface (14) from the host negative pressure interface (12).

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