A simple laparoscope perfusion device capable of maintaining constant pressure

Abstract

The present invention discloses a simple laparoscope perfusion device capable of maintaining a constant pressure, comprising a base, wherein a spiral through groove is arranged in the base, and wherein a motor mounting cavity, a transmission mounting cavity and a battery mounting cavity are arranged in the base. The present invention drives the connecting shaft to rotate slowly and continuously at a constant speed by rotating the output shaft of the motor, thereby driving the connecting rope to be continuously reeled, and during the reeling process, the movable sealing plug is continuously moved inward along the through groove at a constant speed, and the gas in front of the movable sealing plug is continuously discharged from the air guide port by pushing the movable sealing plug forward, and then enters the flushing bag through the disposable first threaded plastic sleeve, the plastic conduit and the second threaded plastic sleeve in sequence, wherein the controller controls the rotation speed of the rotating motor through the feedback of the ultrasonic flowmeter body, so that when the infusion is performed, the air pressure in the flushing bag is changed in a manner to ensure that the flow rate of the infusion tube is the same, thereby ensuring that the flushing fluid enters the patient's body with the same pressure.

Description

Technical Field

[0001] The invention relates to the field of medical technology, and in particular to a simple laparoscope perfusion adding device capable of maintaining a constant pressure. Background Art

[0002] At present, during laparoscopic surgery, a device is required to pressurize the liquid in a 3L flushing bag and infuse it into the patient's body. In clinical practice, laparoscopic infusion pumps or pressurized bags are used. Laparoscopic infusion pumps are inconvenient to use and require a dedicated flushing tube. In addition, pulsed pressurization can easily damage the diaphragm on the flushing tube and cause leakage. In the pressurized bag method, the flushing bag is squeezed after the pressurized bag is pressurized and expanded. The deformation pressure of the pressurized bag cannot be fully applied to the flushing bag during the squeezing process. In this way, the flushing bag is subjected to unstable squeezing pressure due to insufficient squeezing. In addition, when the 3L flushing bag is injected into the patient's body, the 3L flushing bag is generally at a high position relative to the injection point in contact with the human body. During the injection process, as the liquid in the 3L flushing bag becomes less and less, it is difficult to ensure that the output pressure at the injection point to the human body remains constant due to the influence of gravity. For this reason, we designed a simple laparoscopic infusion device that can maintain a constant pressure. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art and to propose a simple laparoscope perfusion device capable of maintaining a constant pressure.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A simple laparoscope perfusion and addition device capable of maintaining a constant pressure comprises a base, wherein the base is provided with a spiral through groove, the base is provided with a motor mounting cavity, a transmission mounting cavity and a battery mounting groove, the motor mounting cavity is fixedly connected with a rotating motor, the output shaft of the rotating motor passes through the motor mounting cavity and extends into the transmission mounting cavity, the inner side wall of the transmission mounting cavity is rotatably connected with a connecting shaft, the connecting shaft is connected to the output shaft of the rotating motor through a transmission mechanism, the connecting shaft passes through the transmission mounting cavity and extends into the through groove, and the extending end of the connecting shaft is fixedly connected with a wire reel, the base is fixedly connected with a top shell, a movable sealing plug is provided between the top shell and the through groove of the base, the movable sealing plug is connected to the inner side wall of one end of the through groove by a rubber belt, the other side of the movable sealing plug is connected to the wire reel by a connecting rope, and an air guide port is opened at the center of the top shell.

[0006] Preferably, the transmission mechanism comprises a first gear fixedly sleeved on the output shaft of the rotating motor, a second gear fixedly sleeved on the outer side wall of the connecting shaft, and a diameter of the first gear is smaller than a diameter of the second gear.

[0007] Preferably, a threaded clip strip is provided at the bottom of the top shell, and a reserved clip slot corresponding to the clip strip is provided on the base.

[0008] Preferably, a handle bolt is threadedly connected to the outer side wall of the base, and a reserved thread groove corresponding to the handle bolt is provided on the clamping strip.

[0009] Preferably, a threaded sleeve is provided at the air outlet end of the air guide port, the outer side wall of the threaded sleeve is threadedly connected to a first threaded plastic sleeve, the first threaded plastic sleeve is connected to a plastic conduit, and the other end of the plastic conduit is connected to a second threaded plastic sleeve.

[0010] Preferably, a control cavity is provided on the base, a controller is arranged in the control cavity, an output end of the controller is electrically connected to the rotating motor, and an input end of the controller is electrically connected to the ultrasonic flowmeter body.

[0011] Preferably, the outer shell in the ultrasonic flow meter body is composed of two semi-ring bodies, and the two semi-ring bodies are connected by a plurality of handle bolts.

[0012] The beneficial effects of the present invention are:

[0013] The device drives the connecting shaft to rotate slowly and continuously by rotating the output shaft of the motor, thereby driving the connecting rope to be continuously reeled. During the reeling process, the movable sealing plug is continuously moved inward along the through groove, and the gas in front of it is continuously discharged from the air guide port by pushing the movable sealing plug forward. The gas enters the flushing bag through the disposable first threaded plastic sleeve, the plastic catheter and the second threaded plastic sleeve in sequence. The controller controls the rotation speed of the rotating motor through the feedback of the ultrasonic flowmeter body. In this way, the air pressure in the flushing bag is changed during infusion to ensure the same flow rate of the infusion tube, thereby ensuring the same pressure of the flushing fluid entering the patient's body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a simple laparoscope perfusion device capable of maintaining a constant pressure proposed by the present invention;

[0015] Figure 2 This is a schematic diagram of the top view of the base of a simple laparoscope perfusion device capable of maintaining a constant pressure proposed by the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the top shell of a simple laparoscope perfusion device capable of maintaining a constant pressure proposed by the present invention;

[0017] Figure 4 The present invention provides a schematic diagram of the internal structure of a transmission installation cavity in a simple laparoscope perfusion device capable of maintaining a constant pressure.

[0018] In the figure: 1 base, 2 motor installation cavity, 3 transmission installation cavity, 4 battery installation slot, 5 rotating motor, 6 through slot, 7 top shell, 8 movable sealing plug, 9 rubber belt, 10 connecting rope, 11 first gear, 12 second gear, 13 air guide port, 14 clamping strip, 15 reserved clamping slot, 16 handle bolt, 17 threaded sleeve, 18 first threaded plastic sleeve, 19 plastic conduit, 20 second threaded plastic sleeve, 21 connecting shaft, 22 take-up reel, 23 controller, 24 ultrasonic flowmeter body. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element 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 invention.

[0021] Reference Figure 1-4 A simple laparoscope perfusion device capable of maintaining a constant pressure comprises a base 1, wherein the base 1 is provided with a spiral through groove 6, wherein the base 1 is provided with a motor mounting cavity 2, a transmission mounting cavity 3 and a battery mounting groove 4, wherein the battery mounting groove 4 is a prior art, and realizes the placement of the battery, and then realizes the function of powering the rotating motor 5, the controller 23 and the ultrasonic flowmeter body 24 through the battery, wherein the circuit and control for powering the rotating motor 5, the controller 23 and the ultrasonic flowmeter body 24 by the battery are all prior art, and are not elaborated here, a rotating motor 5 is fixedly connected in the motor mounting cavity 2, wherein the rotating motor 5 is a forward and reverse servo motor, and the output shaft of the rotating motor 5 passes through the motor mounting cavity 2 and extends into the transmission mounting cavity 3, and the inner side wall of the transmission mounting cavity 3 is rotatably connected with a connecting shaft 21, and the connecting shaft 21 is connected to the output shaft of the rotating motor 5 through a transmission mechanism;

[0022] Further, the transmission mechanism includes a first gear 11 fixedly sleeved on the output shaft of the rotating motor 5, and a second gear 12 fixedly sleeved on the outer side wall of the connecting shaft 21, and the diameter of the first gear 11 is smaller than the diameter of the second gear 12. The rotation of the rotating motor 5 drives the connecting shaft 21 to rotate through the setting of the transmission mechanism. Since the diameter of the first gear 11 is smaller than the diameter of the second gear 12, the output shaft of the rotating motor 5 drives the connecting shaft 21 to rotate, which has the effect of decelerating the connecting shaft 21, so that the connecting shaft 21 rotates slowly.

[0023] Furthermore, a control chamber is provided on the base 1, and a controller 23 is provided in the control chamber. The output end of the controller 23 is electrically connected to the rotating motor 5, and the input end of the controller 23 is electrically connected to the ultrasonic flowmeter body 24. When the ultrasonic flowmeter body 24 detects a change in the flow rate of the flushing liquid in the flushing tube, a high-level signal is given to the controller 23. The controller adopts an electromagnetic speed-regulating motor controller, and then controls the rotation speed of the rotating motor 5 through the controller, and then controls the pushing speed of the subsequent active sealing plug 8, thereby changing the air pressure in the flushing bag, so that when the flushing liquid in the flushing bag drops, the speed at which the flushing liquid is injected from the flushing bag into the patient's body is stabilized. It should be noted that the electrical connection relationship and principle between the electromagnetic speed-regulating motor controller and the ultrasonic flowmeter body 24 are both existing technologies, and are not elaborated here.

[0024] Furthermore, the outer shell of the ultrasonic flowmeter body 24 is composed of two semi-ring bodies, and the two semi-ring bodies are connected by multiple handle bolts. The outer shell of the ultrasonic flowmeter body 24 is composed of two semi-ring bodies, and the connection method of handle bolts is adopted, which facilitates the ultrasonic flowmeter body 24 to be set on both sides of the infusion tube of the flushing bag.

[0025] The connecting shaft 21 penetrates the transmission installation cavity 3 and extends into the through slot 6, and the extending end of the connecting shaft 21 is fixedly connected to the wire take-up drum 22, the base 1 is fixedly connected to the top shell 7, and a movable sealing plug 8 is provided between the top shell 7 and the through slot 6 of the base 1;

[0026] Furthermore, a threaded card strip 14 is provided at the bottom of the top shell 7, and a reserved card slot 15 corresponding to the card strip 14 is provided on the base 1. The card strip 14 and the reserved card slot 15 ensure the accuracy and speed of the top shell 7 and the base 1 when they are installed and docked. Secondly, the sealing of the top shell 7 and the through groove 6 in the base 1 is better ensured to prevent the internal gas from leaking outward in the horizontal direction. The top shell 7 is provided to facilitate the sterilization treatment such as disinfection of the inside of the through groove 6.

[0027] Furthermore, a handle bolt 16 is threadedly connected to the outer wall of the base 1, and a reserved thread groove corresponding to the handle bolt 16 is opened on the clamping strip 14. The stability of the connection between the base 1 and the top shell 7 is ensured by the setting of the handle bolt 16.

[0028] The movable sealing plug 8 is connected to the inner side wall of one end of the through slot 6 by a rubber belt 9, and the other side of the movable sealing plug 8 is connected to the take-up drum 22 by a connecting rope 10. An air guide port 13 is provided at the center of the top shell 7.

[0029] Furthermore, a threaded sleeve 17 is provided at the air outlet end of the air guide port 13, and the outer side wall of the threaded sleeve is threadedly connected with a first threaded plastic sleeve 18, the first threaded plastic sleeve 18 is connected with a plastic conduit 19, and the other end of the plastic conduit 19 is connected with a second threaded plastic sleeve 20, and the connection with the threaded sleeve 17 is achieved through the threaded first threaded plastic sleeve 18, and the connection with the flushing bag is achieved through the second threaded plastic sleeve 20, wherein the first threaded plastic sleeve 18, the plastic conduit 19 and the second threaded plastic sleeve 20 form a conduit, and the conduit is made of disposable plastic, so it can be disposed of after each use to avoid cross-use.

[0030] In the device, the base 1 and the top shell 7 are made of stainless steel, which is convenient for sterilization and has good effect, and the movable sealing plug 8 has a central solid block, which is convenient for the sealing rubber layer to be made, and the sealing rubber layer is always sealed with the side wall of the through groove 6 and the top shell 7.

[0031] The working principle of the present invention is as follows:

[0032] When in use, the rotating motor 5 is started, and the output end of the rotating motor 5 drives the connecting shaft 21 to rotate slowly and continuously through the cooperation of the first gear 11 and the second gear 12, which drives the rotation of the take-up drum 22, and the rotation of the take-up drum 22 drives the winding of the connecting rope 10, so that the movable sealing plug 8 is driven by the connecting rope 10 to move continuously inward along the through groove 6. Since the width of the through groove 6 is the same, the gas in front of the movable sealing plug 8 is pushed into the flushing bag through the gas guide port 13, the first threaded plastic sleeve 18, the plastic conduit 19 and the second threaded plastic sleeve 20 in sequence. When the flushing bag is applied with gas pressure, the flushing liquid in it will be accelerated from The infusion tube enters the patient's body; in this process, since the outer wall of the infusion tube is provided with an ultrasonic flowmeter body 24, the flow rate of the flushing liquid in the infusion tube can be detected by the ultrasonic flowmeter body 24. When the flow rate changes, the ultrasonic flowmeter body 24 feeds back to the controller 23, and the controller 23 controls the advancement speed of the movable sealing plug 8 by controlling the rotation speed of the rotating motor 5, and then controls the gas in front of the movable sealing plug 8 to enter the flushing bag. In this way, when the flushing liquid continues to decrease, the infusion flow rate of the infusion tube is kept the same by changing the air pressure in the flushing bag, thereby ensuring that the flushing liquid enters the patient's body at the same pressure.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A simple laparoscope perfusion device capable of maintaining a constant pressure, comprising a base (1), It is characterized in that The base (1) is provided with a spiral through groove (6), the base (1) is provided with a motor installation cavity (2), a transmission installation cavity (3) and a battery installation groove (4), the motor installation cavity (2) is fixedly connected with a rotary motor (5), the output shaft of the rotary motor (5) passes through the motor installation cavity (2) and extends into the transmission installation cavity (3), the inner side wall of the transmission installation cavity (3) is rotatably connected with a connecting shaft (21), the connecting shaft (21) is connected to the output shaft of the rotary motor (5) via a transmission mechanism, and the connecting shaft (21) The connecting shaft (21) extends through the transmission installation cavity (3) and into the through groove (6), and the extended end of the connecting shaft (21) is fixedly connected to a wire take-up drum (22), the base (1) is fixedly connected to a top shell (7), a movable sealing plug (8) is provided between the top shell (7) and the through groove (6) of the base (1), the movable sealing plug (8) is connected to the inner side wall of one end of the through groove (6) by a rubber belt (9), the other side of the movable sealing plug (8) is connected to the wire take-up drum (22) by a connecting rope (10), and an air guide port (13) is provided at the center of the top shell (7); A threaded clamping strip (14) is provided at the bottom of the top shell (7), and a reserved clamping slot (15) corresponding to the clamping strip (14) is provided on the base (1); A handle bolt (16) is threadedly connected to the outer wall of the base (1), and a reserved thread groove corresponding to the handle bolt (16) is provided on the clamping strip (14); The air outlet end of the air guide port (13) is provided with a threaded sleeve (17), the outer wall of the threaded sleeve is threadedly connected to a first threaded plastic sleeve (18), the first threaded plastic sleeve (18) is connected to a plastic conduit (19), and the other end of the plastic conduit (19) is connected to a second threaded plastic sleeve (20).

2. A simple laparoscope perfusion device capable of maintaining a constant pressure according to claim 1, It is characterized in that The transmission mechanism comprises a first gear (11) fixedly sleeved on the output shaft of the rotating motor (5), a second gear (12) fixedly sleeved on the outer side wall of the connecting shaft (21), and the diameter of the first gear (11) is smaller than the diameter of the second gear (12).

3. A simple laparoscope perfusion device capable of maintaining a constant pressure according to claim 1, It is characterized in that The base (1) is provided with a control chamber, in which a controller (23) is arranged, an output end of the controller (23) is electrically connected to a rotating motor (5), and an input end of the controller (23) is electrically connected to an ultrasonic flowmeter body (24).

4. A simple laparoscope perfusion device capable of maintaining a constant pressure according to claim 3, It is characterized in that The outer shell of the ultrasonic flow meter body (24) is composed of two half rings, and the two half rings are connected by a plurality of handle bolts.

Images