Injector with pressure measuring and displaying functions

Abstract

The utility model discloses an injector with pressure measurement display, which comprises an outer sleeve, a piston is arranged on the inner wall of the outer sleeve in a sliding manner, a core rod is arranged in the outer sleeve, one end of the core rod is fixedly connected with the piston, a pressing handle is fixedly arranged at the other end of the core rod, and a pressure sensor is arranged at one end of the piston far away from the core rod. A control mechanism and a display screen are arranged on the core rod, and the pressure sensor and the display screen are both in electric signal connection with the control mechanism. The interventional catheter is communicated with the outer sleeve, when the interventional catheter needs to be subjected to air exhaust, a medical worker applies pulling force to the pressing hand and the core rod, so that the piston is driven to move in the outer sleeve, negative pressure is generated in the outer sleeve, a pressure sensor on the piston detects the intensity of pressure in the outer sleeve at the moment, and then an electric signal is transmitted to the control mechanism; electric signals of the control mechanism are transmitted to the display screen, and the display screen performs numerical display on the pressure intensity, so that the problem that the pressure cannot be displayed or cannot be accurately displayed in the suction process of the injector is solved.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, specifically to a syringe with pressure measurement display. Background Technology

[0002] In clinical treatment of intravascular thrombosis, one of the treatment methods is negative pressure aspiration. One of the most common negative pressure aspiration methods is to use a syringe in conjunction with an interventional catheter for aspiration.

[0003] However, the negative pressure varies at different pull marks when using a syringe for aspiration, and the pressure also changes during the aspiration process. Clinically, it is necessary to control the aspiration negative pressure level within a safe and effective range for different blood vessel sites. Ordinary syringes cannot display the negative pressure value, which brings certain troubles to the use of aspiration.

[0004] Although existing methods allow connecting a pressure gauge or pressure detection module in series with the suction line via an external T-junction on a syringe, this method cannot accurately display the pressure value when liquid is flowing through it. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide a syringe with pressure measurement and display, which accurately reflects the pressure in the syringe container and facilitates operation by medical personnel.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a syringe with pressure measurement and display, comprising an outer casing, a piston slidably disposed on the inner wall of the outer casing, a core rod disposed inside the outer casing, one end of the core rod being fixedly connected to the piston, a handle being fixedly mounted on the other end of the core rod, a pressure sensor being disposed at the end of the piston away from the core rod, and a control mechanism and a display screen being disposed on the core rod, both of the pressure sensor and the display screen being electrically connected to the control mechanism.

[0007] Furthermore, the control mechanism includes a control board, which is fixedly mounted on the core rod. The control board is equipped with buttons and a control chip.

[0008] Furthermore, a button battery is provided on the control board.

[0009] Furthermore, a sealing ring is provided on the peripheral side of the piston.

[0010] Furthermore, a hollow cone is provided on one side of the outer jacket, which is connected to the interior of the outer jacket, and a rolled edge is provided on the other side of the outer jacket.

[0011] Furthermore, the outer wall of the outer jacket is provided with graduations.

[0012] Furthermore, both the sealing ring and the piston are made of rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By connecting the interventional catheter to the outer sheath, when it is necessary to aspirate the interventional catheter, medical staff apply a pulling force to the hand and the core rod, causing the core rod to gradually move from the inside of the outer sheath to the outside, thereby driving the piston to move inside the outer sheath and creating negative pressure inside the outer sheath. At this time, the pressure sensor on the piston will detect the pressure inside the outer sheath, and then the electrical signal is transmitted to the control mechanism. The control mechanism transmits the electrical signal to the display screen, and the pressure is displayed numerically on the display screen, thereby solving the problem that the pressure cannot be displayed or is displayed inaccurately during the syringe aspiration process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a partial schematic diagram of the core rod structure of this utility model.

[0016] In the diagram: 1. Outer casing; 2. Piston; 3. Core rod; 4. Hand; 5. Pressure sensor; 6. Control mechanism; 61. Control board; 62. Button; 63. Control chip; 7. Display screen; 8. Button battery; 9. Sealing ring; 10. Hollow cone; 11. Rolled edge; 12. Scale. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Please see Figure 1 In clinical treatment of intravascular thrombosis, one treatment method is negative pressure aspiration. One of the most common negative pressure aspiration methods is to use a syringe in conjunction with an interventional catheter for aspiration. Therefore, this embodiment provides a syringe with pressure measurement and display, including an outer casing 1, a piston 2 slidably disposed on the inner wall of the outer casing 1, a core rod 3 disposed inside the outer casing 1, one end of the core rod 3 being fixedly connected to the piston 2, and a handle 4 being fixedly installed on the other end of the core rod 3.

[0019] The interventional catheter is connected to the outer casing 1. When it is necessary to aspirate the interventional catheter, the medical staff applies a pulling force to the hand 4 and the core rod 3, causing the core rod 3 to gradually move from the inside of the outer casing 1 to the outside, thereby driving the piston 2 to move inside the outer casing 1, creating negative pressure inside the outer casing 1, thereby aspirating the blood clot through the interventional catheter.

[0020] However, during aspiration, the negative pressure will be different at different pull-out scales, and the pressure will also change during aspiration. Clinically, it is necessary to control the aspiration negative pressure level within a safe and effective range for different blood vessel sites. Ordinary syringes cannot display the negative pressure value, which brings certain troubles to the use of aspiration.

[0021] Please see Figure 1 and Figure 2 To address the aforementioned technical issues, a pressure sensor 5 is installed at the end of the piston 2 furthest from the core rod 3. A control mechanism 6 and a display screen 7 are installed on the core rod 3, and both the pressure sensor 5 and the display screen 7 are electrically connected to the control mechanism 6.

[0022] When piston 2 moves and the inside of outer casing 1 is under negative pressure, pressure sensor 5 on piston 2 will detect the pressure inside outer casing 1 and transmit the electrical signal to control mechanism 6. Control mechanism 6 then transmits the electrical signal to display screen 7, which displays the pressure value. Because pressure sensor 5 is located at piston 2, if outer casing 1 is in a vertical position for aspiration (i.e., piston 2 is below the handle 4), and initially there is some space between piston 2 and the inner wall of one end of outer casing 1, pressure sensor 5 will never come into contact with the aspirated liquid during the sliding aspiration process of piston 4. Therefore, pressure sensor 5 is more sensitive to the pressure inside outer casing 1. At the same time, this solution sets both pressure detection and signal processing on the core rod 3, maintaining the structure and usage habits of ordinary syringes.

[0023] Please see Figure 2 The control mechanism 6 specifically includes a control board 61, which is fixedly mounted on the core rod 3. The control board 61 is equipped with buttons 62 and a control chip 63. The buttons 62 and the control chip 63 are used to activate or deactivate the pressure sensor 5's detection of the internal pressure of the outer jacket 1.

[0024] To facilitate the movement and handling of the syringe, a button battery 8 is installed on the control board 61. This provides power to the control board 61, eliminating the need for external wiring and making it simple and convenient.

[0025] A sealing ring 9 is provided on the side of piston 2. Both the sealing ring 9 and piston 2 are made of rubber. This improves the sealing between the side wall of piston 2 and the inner wall of outer sleeve 1, making the pressure sensor 5 detect values ​​more accurately.

[0026] Please see Figure 1 The outer sleeve 1 has a hollow cone 10 on one side, which is connected to the inside of the outer sleeve 1. The other side of the outer sleeve 1 has a rolled edge 11. The hollow cone 10 facilitates the connection between the interventional catheter and the inside of the outer sleeve 1, and also facilitates the installation and separation of the outer sleeve 1 and the interventional catheter.

[0027] Please see Figure 1 The outer wall of the outer casing has a scale 12. This makes it easy to observe the amount of liquid aspirated and also allows medical staff to make adjustments based on the aspirated volume.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A syringe with pressure measurement display, comprising a jacket (1), characterized in that, A piston (2) is slidably disposed on the inner wall of the outer sleeve (1). A core rod (3) is disposed inside the outer sleeve (1). One end of the core rod (3) is fixedly connected to the piston (2). A handle (4) is fixedly installed on the other end of the core rod (3). A pressure sensor (5) is disposed on the end of the piston (2) away from the core rod (3). A control mechanism (6) and a display screen (7) are disposed on the core rod (3). The pressure sensor (5) and the display screen (7) are both electrically connected to the control mechanism (6).

2. The syringe with pressure measurement display according to claim 1, characterized in that, The control mechanism (6) includes a control board (61), which is fixedly mounted on the core rod (3). The control board (61) is provided with buttons (62) and a control chip (63).

3. The syringe with pressure measurement display according to claim 2, characterized in that, A button battery (8) is provided on the control board (61).

4. The syringe with pressure measurement display according to claim 1, characterized in that, A sealing ring (9) is provided on the peripheral side of the piston (2).

5. The syringe with pressure measurement display according to claim 1, characterized in that, A hollow cone (10) is provided on one side of the outer jacket (1), and the hollow cone (10) is connected to the inside of the outer jacket (1). A rolled edge (11) is provided on the other side of the outer jacket (1).

6. The syringe with pressure measurement display according to claim 1, characterized in that, The outer wall of the outer jacket (1) is provided with a scale (12).

7. The syringe with pressure measurement display according to claim 4, characterized in that, Both the sealing ring (9) and the piston (2) are made of rubber.

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