Marine medical portable syringe pump

Abstract

The present invention provides a portable medical syringe pump for use at sea, comprising a syringe pump body for fixing a syringe barrel, and a pusher head connected to a syringe piston handle; a clip is provided on a side of the pusher head close to the syringe pump body, the clip having a receiving groove with an outward opening for inserting the syringe piston shaft; the pusher head has a cavity, within which is provided a stabilizing member connected to the clip and pulling the clip toward the side of the pusher head; the stabilizing member comprises a sliding rod penetrating a side wall of the pusher head and fixedly connected to the clip, a limit block fixedly connected to the sliding rod, and an elastic body abutting the limit block and the inner wall of the pusher head; the pusher head is connected to an adjusting member that pushes the sliding rod to slide, compresses the elastic body, and moves the clip away from the pusher block. The present invention has the effect of improving the stability of the syringe when it is fixed to the syringe pump.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a portable medical injection pump for use at sea. Background Art

[0002] A syringe pump is a device used to push the plunger of a syringe for injection and infusion, achieving smooth and precise fluid delivery. It is currently widely used in operating rooms, emergency rooms, ICUs, CCU recovery rooms, and general wards. A portable offshore medical syringe pump is used in maritime medical rescue projects and can be easily relocated to meet specific medical needs.

[0003] In the related art, when using a syringe pump, the finger-shaped flange on the syringe barrel is clipped into the finger-shaped flange groove on the syringe pump housing, and then the syringe barrel and the syringe pump housing are fixed with a syringe clamp. The syringe pump pusher head is then adjusted to abut the syringe piston shaft, and the piston shaft is clamped by the clamp on the pusher head, so that the piston handle on the end of the piston shaft is limited between the clamp and the pusher head. The pusher head drives the piston shaft to move the piston in the syringe barrel, and the syringe pump can inject the medicine. For syringes of different models and specifications, the piston handle size and thickness are different. When the pusher head is connected to the piston shaft, a gap is easily generated between the piston handle and the push block, resulting in unstable fixation of the syringe. Summary of the Invention

[0004] In view of this, the present invention aims to provide a portable medical injection pump for use at sea, so as to improve the stability of the syringe when it is fixed on the injection pump.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A portable medical syringe pump for use at sea comprises a syringe pump body for fixing a syringe barrel, and a pusher head connected to a syringe piston handle;

[0007] A clip is provided on one side of the push head close to the injection pump body, and the clip has a receiving groove with an outward opening, and the receiving groove is for the syringe piston shaft to be inserted;

[0008] The push head has a cavity, and a stabilizing member connected to the clip is provided in the cavity and pulls the clip to move toward a side close to the push head;

[0009] The stabilizing member includes a sliding rod penetrating the side wall of the pusher head and fixedly connected to the clip, a limiting block fixedly connected to the sliding rod, and an elastic body abutting against the limiting block and the inner wall of the pusher head;

[0010] The push head is connected to an adjusting member that pushes the slide rod to slide, compresses the elastic body and moves the clip away from the push block.

[0011] Furthermore, the end surface of the sliding rod facing away from the clip is a first inclined surface; the adjusting member includes a rotating rod, which is coaxial with the sliding rod and passes through the side wall of the push head and is rotatably connected to the push head; the end surface of the rotating rod close to the sliding rod is a second inclined surface; the first inclined surface and the second inclined surface can be completely fitted together to form the clip fitted on the push head.

[0012] Furthermore, the adjusting member further includes a rotating paddle located outside the cavity and fixedly connected to the rotating rod.

[0013] Furthermore, the push head is fixedly connected to a connecting rod parallel to the sliding rod; the other end of the connecting rod is inserted into the injection pump body and is parallel to the screw rod in the injection pump body; a clutch is connected between the connecting rod and the nut seat of the screw rod; the clutch causes the connecting rod to slide synchronously with the sliding of the nut seat along the length direction of the screw rod, or causes the connecting rod and the nut seat to slide relative to each other.

[0014] Furthermore, the connecting rod is a hollow tubular structure and is connected to the cavity; a through hole is opened on the circumferential side wall of the connecting rod along its axial direction; the clutch member includes a base sleeved on the connecting rod and fixedly connected to the nut seat, a protrusion fixedly connected to the base and radially inserted into the connecting rod, and a clutch bar located in the connecting rod; a first meshing tooth is formed on the protrusion; a second meshing tooth is formed on the clutch bar, and the first meshing tooth can mesh with the second meshing tooth; the clutch bar is connected to an elastic member that meshes the first meshing tooth with the second meshing tooth; a transmission member is provided between the clutch bar and the rotating rod, which can compress the elastic member to separate the first meshing tooth from the second meshing tooth.

[0015] Furthermore, the transmission component includes: a winding shaft located in the cavity and perpendicular to the connecting rod, a first bevel gear sleeved outside the rotating rod, a second bevel gear meshing with the first bevel gear and sleeved on the winding shaft, a cable fixed at one end to the winding shaft and the other end to the clutch bar, and a reversing ring fixed to the inner wall of the connecting rod through which the cable can pass; the reversing ring makes the cable between the clutch bar and the reversing ring distributed along the radial direction of the connecting rod.

[0016] Furthermore, the elastic member includes a sleeve fixedly connected in the connecting rod, a guide rod slidably inserted in the sleeve and fixedly connected to the clutch bar, and a resilient body located in the sleeve and pressed against the guide rod.

[0017] Furthermore, the resilient body is a spring.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The portable medical injection pump for offshore use described in the present invention can insert the syringe piston shaft into the accommodating groove by providing a clip with a accommodating groove, so that the syringe piston handle is placed between the clip and the push head; when the syringe is installed on the syringe pump body, the elastic body is compressed by the adjusting member, and the clip is pushed away from the push head under the action of the sliding rod. When the syringe piston handle is located between the clip and the push head, the syringe piston handle is clamped between the clip and the push head under the rebound and reset action of the elastic body. It can be suitable for syringes of different models. That is, when the thickness of the syringe piston handle is different due to different syringe models, the syringe piston handle can still be clamped between the clip and the push head, thereby improving the stability of the syringe when it is fixed on the syringe pump body.

[0020] By providing an adjustment member including a rotating rod and providing a first inclined surface and a second inclined surface that can completely mate with each other, when the adjusting member is used to move the clip away from the push head, the rotating rod is rotated. At this point, the second inclined surface does not completely mate with the first inclined surface. Guided by the second inclined surface, the sliding rod is pushed to move the clip away from the push head. By connecting a rotating paddle to the rotating rod, the distance between the clip and the push head can be adjusted by simply pushing the rotating paddle, which makes adjustment easier.

[0021] By setting a clutch, the connecting rod and the nut seat can slide relative to each other, which makes it convenient to adjust the distance between the push head and the injection pump body according to the length of the syringe piston shaft outside the syringe barrel, so that the syringe barrel can be fixed on the injection pump body while the syringe piston handle just abuts the push head; after fixation, the clutch makes the connecting rod slide synchronously with the nut seat along the length direction of the screw rod, so as to achieve smooth and accurate injection.

[0022] When the connecting rod moves with the nut seat, the first meshing teeth engage with the second meshing teeth under the action of the elastic member. When the distance between the push head and the syringe pump body is adjusted, the transmission member compresses the elastic member, thereby disengaging the first meshing teeth from the second meshing teeth. That is, when the rotating rod is rotated, the winding shaft is driven by the first and second bevel gears. After the cable is wound around the winding shaft, the clutch bar is pulled to compress the elastic member, disengaging the first and second meshing teeth. Rotating the rotating rod simultaneously drives the clip to move away from the push head. At this time, the distance between the push head and the syringe pump body can be adjusted according to the length of the syringe piston shaft, and the syringe piston handle can be placed between the clip and the push head. After releasing the rotating rod, the first meshing teeth of the elastic member engage with the second meshing teeth, and under the action of the elastic member, the clip moves toward the side close to the push head to clamp the syringe piston handle.

[0023] By configuring the elastic member as a sleeve, guide rod, and resilient element, compression of the elastic member facilitates radial movement of the clutch bar along the connecting rod without causing axial displacement of the connecting rod, thereby improving the transmission stability of the transmission member. Using a spring as the resilient element ensures that the resilient element has excellent fatigue resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0026] Figure 2 A schematic diagram showing some parts of a display container according to an embodiment of the present invention;

[0027] Figure 3 A partial structural cross-sectional view of an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of some parts of a transmission member according to an embodiment of the present invention;

[0029] Figure 5 Partial parts diagram of the screw rod, connecting rod and clutch parts of the embodiment of the present invention;

[0030] Figure 6 A schematic diagram of a clutch member according to an embodiment of the present invention from another perspective;

[0031] Figure 7 is a schematic diagram of a first meshing tooth and a second meshing tooth according to an embodiment of the present invention;

[0032] Figure 8 2 is a cross-sectional view of an elastic member according to an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Injection pump body; 101. Screw; 102. Nut seat; 103. Finger flange groove;

[0035] 2. Push head; 201. Cavity;

[0036] 3. Clip; 301. Accommodation groove;

[0037] 4. Stabilizing member; 401. Sliding rod; 401a. First inclined surface; 402. Limiting block; 403. Elastic body;

[0038] 5. Adjusting member; 501. Rotating rod; 501a. Second inclined surface; 502. Rotating paddle;

[0039] 6. Connecting rod; 601. Through hole;

[0040] 7. Clutch member; 701. Base; 702. Protrusion; 7021. First meshing tooth; 703. Clutch bar; 7031. Second meshing tooth;

[0041] 8. Transmission member; 801. Reel; 802. First bevel gear; 803. Second bevel gear; 804. Cable; 805. Reversing ring;

[0042] 9. Elastic member; 901. Sleeve; 902. Guide rod; 903. Resilient member;

[0043] 1001. Syringe piston handle; 1002. Syringe piston shaft. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0045] In the description of the present invention, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0046] Furthermore, in the description of the present invention, unless otherwise expressly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in the present invention based on the specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0048] This embodiment relates to a portable medical injection pump for use at sea, so as to improve the stability of the syringe when it is fixed on the injection pump body 1 .

[0049] In terms of overall structure, Figures 1 to 4As shown, the portable medical syringe pump for offshore use comprises a syringe pump body 1 for securing the syringe barrel, and a pusher head 2 connected to the syringe piston handle 1001. A clip 3 is provided on the side of the pusher head 2 near the syringe pump body 1. The clip 3 has an outwardly opening receiving groove 301 for inserting the syringe piston shaft 1002. The pusher head 2 comprises a cavity 201, within which is provided a connecting clip 3 and a stabilizing member 4 for pulling the clip 3 toward the side of the pusher head 2. The stabilizing member 4 comprises a slide rod 401 extending through the side wall of the pusher head 2 and fixedly connected to the clip 3, a stop block 402 fixedly connected to the slide rod 401, and an elastic body 403 abutting the stop block 402 and the inner wall of the pusher head 2. The pusher head 2 is connected to an adjusting member 5 that pushes the slide rod 401 to slide, compressing the elastic body 403 and moving the clip 3 away from the pusher block.

[0050] By providing a clip 3 with a receiving groove 301, the syringe piston shaft 1002 can be inserted into the receiving groove 301, so that the syringe piston handle 1001 can be placed between the clip 3 and the push head 2; when the syringe is installed on the injection pump body 1, the elastic body 403 is compressed by the adjusting member 5, and then the clip 3 is pushed away from the push head 2 under the action of the slide rod 401. When the syringe piston handle 1001 is located between the clip 3 and the push head 2, the syringe piston handle 1001 is clamped between the clip 3 and the push head 2 under the rebound and reset action of the elastic body 403, and can be suitable for different models of syringes. That is, when the syringe models are different and the thickness of the syringe piston handle 1001 is different, the syringe piston handle 1001 can still be clamped between the clip 3 and the push head 2, thereby improving the stability of the syringe when it is fixed on the injection pump body 1.

[0051] Based on the overall introduction above, in this embodiment, the opening direction of the receiving groove 301 is the same as the finger flange groove 103 on the injection pump body 1 for clamping the syringe finger flange. After the slide rod 401 passes through the side wall of the push head 2, it only slides relative to the push head 2 and does not rotate relative to the push head 2. In this way, the opening of the receiving groove 301 remains unchanged while the distance between the clip 3 and the push head 2 can be adjusted. The elastic body 403 can be a spring. On this basis, the limit block 402 can be set to a circular ring structure, and the circular ring-shaped limit block 402 is mounted on the slide rod 401 so that the spring can evenly abut the limit block 402, making the force on the slide rod 401 more uniform.

[0052] On the basis of setting the adjusting member 5 to compress the elastic body 403, as shown in FIG. Figures 2 to 4As shown, as an operative embodiment, the end surface of the slide bar 401 facing away from the clip 3 is a first inclined surface 401a. The adjusting member 5 includes a rotating rod 501, which is coaxial with the slide bar 401 and extends through the side wall of the pusher head 2 to be rotatably connected thereto. The end surface of the rotating rod 501 closest to the slide bar 401 is a second inclined surface 501a. The first inclined surface 401a and the second inclined surface 501a can completely mate with each other, thereby forming a clamp 3 affixed to the pusher head 2. To facilitate rotation of the rotating rod 501, the adjusting member 5 further includes a rotating paddle 502 located outside the cavity 201 and fixedly connected to the rotating rod 501.

[0053] By providing the adjusting member 5 with a rotating rod 501 and providing the first inclined surface 401a and the second inclined surface 501a to completely mate, when the adjusting member 5 is used to move the clip 3 away from the push head 2, the rotating rod 501 is rotated. At this time, the second inclined surface 501a does not completely mate with the first inclined surface 401a. Guided by the second inclined surface 501a, the sliding rod 401 is pushed to move the clip 3 away from the push head 2. By connecting the rotating paddle 502 to the rotating rod 501, the distance between the clip 3 and the push head 2 can be adjusted by simply pushing the rotating paddle 502, which makes it easier to adjust the distance.

[0054] The first bevel 401a and the second bevel 501a are configured to completely mate with each other. When the first bevel 401a and the second bevel 501a are completely mate with each other, the clip 3 completely abuts the pusher head 2. As the contact area between the first bevel 401a and the second bevel 501a varies, the spacing between the clip 3 and the pusher head 2 varies to accommodate syringe piston handles 1001 of different thicknesses.

[0055] To facilitate adjustment of the distance between the pusher head 2 and the injection pump body 1, Figure 1 and Figure 5 As shown, the push head 2 is fixedly connected with a connecting rod 6 parallel to the slide rod 401; the other end of the connecting rod 6 is inserted into the injection pump body 1 and is parallel to the screw rod 101 in the injection pump body 1; a clutch 7 is connected between the connecting rod 6 and the nut seat 102 of the screw rod 101; the clutch 7 causes the connecting rod 6 to slide synchronously with the nut seat 102 along the length direction of the screw rod 101, or causes the connecting rod 6 and the nut seat 102 to slide relative to each other.

[0056] By setting the clutch 7, the connecting rod 6 and the nut seat 102 can slide relative to each other, which makes it convenient to adjust the distance between the push head 2 and the injection pump body 1 according to the length of the syringe piston shaft 1002 outside the syringe barrel, so that the syringe barrel can be fixed on the injection pump body 1 while the syringe piston handle 1001 just abuts the push head 2; after fixation, the clutch 7 makes the connecting rod 6 slide synchronously with the nut seat 102 along the length direction of the screw rod 101, thereby achieving smooth and accurate injection.

[0057] It is understandable that as an implementable approach, Figures 4 to 7As shown, the connecting rod 6 is a hollow tubular structure and is connected to the cavity 201; a through hole 601 is opened on the circumferential side wall of the connecting rod 6 along its axial direction; the clutch member 7 includes a base 701 that is sleeved on the connecting rod 6 and fixedly connected to the nut seat 102, a protrusion 702 that is fixedly connected to the base 701 and inserted into the connecting rod 6 along the radial direction of the connecting rod 6, and a clutch bar 703 located in the connecting rod 6; a first meshing tooth 7021 is formed on the protrusion 702; a second meshing tooth 7031 is formed on the clutch bar 703, and the first meshing tooth 7021 can mesh with the second meshing tooth 7031; the clutch bar 703 is connected to an elastic member 9 that meshes the first meshing tooth 7021 with the second meshing tooth 7031; a transmission member 8 that can compress the elastic member 9 and separate the first meshing tooth 7021 from the second meshing tooth 7031 is provided between the clutch bar 703 and the rotating rod 501.

[0058] It is understood that the direction in which the first meshing teeth 7021 are formed is perpendicular to the length of the connecting rod 6. As described above, when the first meshing teeth 7021 and the second meshing teeth 7031 are engaged under the action of the elastic member 9, the connecting rod 6 and the protrusion 702 do not undergo relative displacement, thereby achieving synchronous movement of the connecting rod 6 with the nut seat 102. When the transmission member 8 compresses the elastic member 9, thereby disengaging the first meshing teeth 7021 and the second meshing teeth 7031, the connecting rod 6 and the protrusion 702 can slide relative to each other, causing the connecting rod 6 and the nut seat 102 to slide relative to each other.

[0059] On the basis of setting the adjusting member 5 as the rotating rod 501, as shown in FIG. Figures 4 to 7 As shown, as a setting form of the transmission member 8, the transmission member 8 includes: a winding shaft 801 located in the cavity 201 and perpendicular to the connecting rod 6, a first bevel gear 802 mounted outside the rotating rod 501, a second bevel gear 803 meshing with the first bevel gear 802 and mounted on the winding shaft 801, a cable 804 with one end fixed to the winding shaft 801 and the other end fixed to the clutch bar 703, and a reversing ring 805 fixed to the inner wall of the connecting rod 6 for the cable 804 to pass through; the reversing ring 805 makes the cable 804 between the clutch bar 703 and the reversing ring 805 distributed along the radial direction of the connecting rod 6.

[0060] As described above, when the rotating rod 501 is rotated, the first bevel gear 802 and the second bevel gear 803 drive the take-up shaft 801 to rotate. After the cable 804 is wound around the take-up shaft 801, the clutch bar 703 is pulled to compress the elastic member 9, disengaging the first meshing teeth 7021 and the second meshing teeth 7031. Rotating the rotating rod 501 simultaneously drives the clip 3 to move away from the pusher head 2. At this time, the distance between the pusher head 2 and the injection pump body 1 can be adjusted according to the length of the syringe piston shaft 1002, and the syringe piston handle 1001 can be placed between the clip 3 and the pusher head 2. After releasing the rotating rod 501, the first meshing teeth 7021 and the second meshing teeth 7031 of the elastic member 9 mesh, and under the action of the elastic body 403, the clip 3 moves toward the pusher head 2 to clamp the syringe piston handle 1001.

[0061] Based on the transmission member 8 set as above, in order to improve the transmission stability of the transmission member 8, as shown in FIG. Figure 6 and Figure 8 As shown, the elastic member 9 can be further configured to include a sleeve 901 fixedly connected to the connecting rod 6, a guide rod 902 slidably inserted in the sleeve 901 and fixedly connected to the clutch bar 703, and a resilient body 903 located in the sleeve 901 and pressed against the guide rod 902. The resilient body 903 is a spring.

[0062] By configuring the elastic member 9 as a sleeve 901, a guide rod 902, and a resilient member 903, compression of the elastic member 9 facilitates radial movement of the clutch bar 703 in the connecting rod 6 without causing axial displacement of the connecting rod 6, thereby improving the transmission stability of the transmission member 8. Using a spring as the resilient member 903 provides the resilient member 903 with excellent fatigue resistance.

[0063] In the portable medical syringe pump for offshore use described in the embodiment of the present application, when securing the syringe to the syringe pump body 1, the syringe finger flange is first clamped into the finger flange groove 103 on the syringe pump body 1. The rotating paddle 502 is then toggled, which drives the rotating rod 501 to rotate. Under the action of the second inclined surface 501a of the first inclined surface 401a, the elastic body 403 is compressed, and the sliding rod 401 drives the clip 3 to move away from the push head 2 to provide space for the syringe piston handle 1001. At the same time, the rotating rod 501 rotates, and under the action of the first bevel gear 802 and the second bevel gear 803, the reel 801 rotates, causing the cable 804 to be wound around the reel 801. At this time, the elastic member 9 compresses the first meshing teeth 7021 and disengages the second meshing teeth 7031. The distance between the push head 2 and the syringe pump body 1 can be adjusted according to the length of the syringe piston shaft 1002. After the rotating paddle 502 is released, the clip 3 and the push head 2 clamp the syringe piston handle 1001 under the action of the elastic body 403, and the first meshing teeth 7021 and the second meshing teeth 7031 are engaged under the action of the elastic member 9, so that the connecting rod 6 moves with the nut seat 102.

[0064] When the syringe piston handle 1001 is located between the clip 3 and the push head 2, the syringe piston handle 1001 is clamped between the clip 3 and the push head 2 under the rebound and reset action of the elastic body 403, which can be suitable for different models of syringes, improves the stability of the syringe when it is fixed on the injection pump body 1, and can synchronously adjust the length of the connecting rod 6 outside the injection pump body 1 according to the different measurement of the injection liquid in the syringe, that is, according to the different exposed lengths of the syringe piston shaft 1002, which has the effect of convenient operation.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable medical syringe pump for use at sea, comprising a syringe pump body (1) for fixing a syringe barrel, and a pusher head (2) connected to a syringe piston handle (1001), characterized in that: A clip (3) is provided on one side of the push head (2) close to the injection pump body (1), and the clip (3) has a receiving groove (301) with an opening facing outward, and the receiving groove (301) is for the syringe piston shaft (1002) to be inserted; The push head (2) has a cavity (201), and a stabilizing member (4) is provided in the cavity (201) and is connected to the clip (3) and pulls the clip (3) to move toward a side close to the push head (2); The stabilizing member (4) comprises a sliding rod (401) penetrating the side wall of the push head (2) and fixedly connected to the clip (3), a limiting block (402) fixedly connected to the sliding rod (401), and an elastic body (403) abutting against the limiting block (402) and the inner wall of the push head (2); The push head (2) is connected to an adjusting member (5) that pushes the slide rod (401) to slide, compresses the elastic body (403) and moves the clip (3) away from the push head; The adjusting member (5) comprises a rotating rod (501), the rotating rod (501) being coaxial with the sliding rod (401) and penetrating the side wall of the pushing head (2) and being rotatably connected to the pushing head (2); The push head (2) is fixedly connected with a connecting rod (6) parallel to the sliding rod (401); the other end of the connecting rod (6) is inserted into the injection pump body (1) and is parallel to the screw rod (101) in the injection pump body (1); a clutch (7) is connected between the connecting rod (6) and the nut seat (102) of the screw rod (101); The clutch member (7) causes the connecting rod (6) to slide synchronously with the sliding of the nut seat (102) along the length direction of the screw rod (101), or causes the connecting rod (6) and the nut seat (102) to slide relative to each other; The connecting rod (6) is a hollow tubular structure and is in communication with the cavity (201); a through hole (601) is provided on the circumferential side wall of the connecting rod (6) along its axial direction; The clutch member (7) comprises a base (701) sleeved on the connecting rod (6) and fixedly connected to the nut seat (102), a protrusion (702) fixedly connected to the base (701) and inserted into the connecting rod (6) along the radial direction of the connecting rod (6), and a clutch bar (703) located in the connecting rod (6); a first meshing tooth (7021) is formed on the protrusion (702); a second meshing tooth (7031) is formed on the clutch bar (703), and the first meshing tooth (7021) can mesh with the second meshing tooth (7031); The clutch bar (703) is connected to an elastic member (9) for engaging the first meshing tooth (7021) with the second meshing tooth (7031); a transmission member (8) is provided between the clutch bar (703) and the rotating rod (501) for compressing the elastic member (9) to separate the first meshing tooth (7021) from the second meshing tooth (7031); The transmission member (8) includes: a reel (801) located in the cavity (201) and perpendicular to the connecting rod (6), a first bevel gear (802) sleeved outside the rotating rod (501), a second bevel gear (803) meshing with the first bevel gear (802) and sleeved on the reel (801), a cable (804) with one end fixed to the reel (801) and the other end fixed to the clutch bar (703), and a reversing ring (805) fixed to the inner wall of the connecting rod (6) for the cable (804) to pass through; The reversing ring (805) enables the cable (804) between the clutch bar (703) and the reversing ring (805) to be distributed along the radial direction of the connecting rod (6).

2. The portable medical syringe pump for marine use according to claim 1, characterized in that: The end surface of the sliding rod (401) facing away from the clamping piece (3) is a first inclined surface (401a); The end surface of the rotating rod (501) close to the sliding rod (401) is a second inclined surface (501a); The first inclined surface (401a) and the second inclined surface (501a) can be completely fitted together to form the clip (3) fitted on the pusher head (2).

3. The portable medical injection pump for marine use according to claim 2, characterized in that: The regulating member (5) further comprises a rotating paddle (502) located outside the cavity (201) and fixedly connected to the rotating rod (501).

4. The portable medical syringe pump for marine use according to claim 1, characterized in that: The elastic member (9) comprises a sleeve (901) fixedly connected to the connecting rod (6), a guide rod (902) slidably inserted in the sleeve (901) and fixedly connected to the clutch bar (703), and a resilient body (903) located in the sleeve (901) and pressed against the guide rod (902).

5. The portable medical injection pump for marine use according to claim 4, characterized in that: The resilient body (903) is a spring.

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