Marine medical portable injection pump

Abstract

The invention provides an offshore medical portable injection pump which is provided with an injection pump body used for fixing an injector needle cylinder and a push head connected with an injector piston handle, a clamping piece is arranged on the side, close to the injection pump body, of the push head, the clamping piece is provided with a containing groove with an outward opening, and an injector piston shaft is inserted into the containing groove; the pushing head is provided with a cavity, and a stabilizing piece which is connected with the clamping piece and pulls the clamping piece to move towards the side close to the pushing head is arranged in the cavity. The stabilizing piece comprises a sliding rod which penetrates through the side wall of the pushing head and is fixedly connected with the clamping piece, a limiting block fixedly connected to the sliding rod, and an elastic body which abuts against the limiting block and the inner wall of the pushing head. The push head is connected with an adjusting piece which pushes the sliding rod to slide, enables the elastic body to be compressed and enables the clamping piece to be far away from the push block. The injection pump has the effect of improving the stability when the injector is fixed on the injection pump.

Description

Technical Field

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

[0002] A syringe pump is a device used to push the piston of a syringe to perform injection and infusion to achieve smooth and accurate liquid transfer. It is currently widely used in operating rooms, emergency rooms, ICUs, CCU resuscitation rooms or general wards. A portable offshore medical syringe pump is a syringe pump used in offshore medical rescue projects that can be easily moved to a different installation location according to actual medical needs.

[0003] In the related art, when using a syringe pump, the finger-shaped flange on the syringe barrel is clamped 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 fixing clamp; then the push head of the syringe pump is adjusted to abut the piston shaft of the syringe, and the piston shaft is clamped by the clamp on the push head, so that the piston handle on the end of the piston shaft is limited between the clamp and the push head, and the push head drives the piston shaft to move the piston in the syringe barrel, so that the syringe pump can inject the medicine. For syringes of different models and specifications, the size and thickness of the piston handle are different. When the push 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 offshore use, 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 injection pump for marine medical use, comprising an injection 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 opening facing outward, 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 arranged in the cavity, and pulls the clip to move toward a side close to the push head;

[0009] The stabilizing member includes a slide bar penetrating the side wall of the push head and fixedly connected to the clip, a limit block fixedly connected to the slide bar, and an elastic body abutting against the limit block and the inner wall of the push head;

[0010] The push head is connected with an adjusting member which 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 also includes a rotating paddle located outside the cavity and fixedly connected to the rotating rod.

[0013] Furthermore, the push head is fixedly connected with 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 makes the connecting rod slide synchronously with the nut seat along the length direction of the screw rod, or makes the connecting rod and the nut seat 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 the 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 enables the first meshing tooth to mesh 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 mounted outside the rotating rod, a second bevel gear meshing with the first bevel gear and mounted 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 offshore medical injection pump 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 can be 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 then 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. The pump can be suitable for syringes of different models. That is, when the syringe piston handle has different thicknesses 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 setting the adjustment member to include a rotating rod, and setting the first inclined surface and the second inclined surface to be completely in contact with each other, when the adjusting member is used to move the clip away from the push head, the rotating rod is rotated, and the second inclined surface is not completely in contact with the first inclined surface. Under the guidance of the second inclined surface, the sliding rod is pushed to drive 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 has the effect of facilitating use and adjustment.

[0021] By setting a clutch, the connecting rod and the nut seat can slide relative to each other, which makes it easy 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, thereby achieving smooth and accurate injection.

[0022] When the connecting rod moves with the nut seat, the first meshing tooth meshes with the second meshing tooth under the action of the elastic member. When the distance between the push head and the injection pump body is adjusted, the transmission member compresses the elastic member and disengages the first meshing tooth from the second meshing tooth. That is, when the rotating rod is rotated, the winding shaft is driven to rotate under the transmission action of the first bevel gear and the second bevel gear. After the cable is wound on the winding shaft, the clutch bar is pulled to compress the elastic member, and the first meshing tooth disengages from the second meshing tooth. Rotating the rotating rod will simultaneously drive the clip to move to the side away from the push head. At this time, the distance between the push head and the injection 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 the rotating rod is released, the first meshing tooth of the elastic member meshes with the second meshing tooth, and the clip moves to the side close to the push head under the action of the elastic body to clamp the syringe piston handle.

[0023] By configuring the elastic member as a sleeve, a guide rod and a resilient body, the elastic member can drive the clutch bar to move along the radial direction of the connecting rod when compressed, without causing dislocation along the axial direction of the connecting rod, thereby improving the transmission stability of the transmission member. The spring is selected as the resilient body, so that the resilient body has good fatigue resistance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 1 It is a 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 receiving tank 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 member 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 4 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 rod; 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. elastic body;

[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 there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional 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 limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

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

[0048] The present 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 injection pump for medical use at sea has an injection pump body 1 for fixing the syringe barrel, and a push head 2 connected to the syringe piston handle 1001. A clip 3 is provided on the side of the push head 2 close to the injection pump body 1. 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 connecting clip 3 is provided in the cavity 201, and a stabilizing member 4 is used to pull the clip 3 to move close to the push head 2. The stabilizing member 4 includes a slide bar 401 that penetrates the side wall of the push head 2 and is fixedly connected to the clip 3, a limit block 402 fixedly connected to the slide bar 401, and an elastic body 403 that abuts the limit 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 bar 401 to slide, compresses the elastic body 403, and moves the clip 3 away from the push 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, which 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, the opening direction of the receiving groove 301 in this embodiment is the same as that of the finger flange groove 103 on the injection pump body 1 for clamping the syringe finger flange. After the slide bar 401 passes through the side wall of the push head 2, it only slides relative to the push head 2 without relative rotation, so as to achieve the opening of the receiving groove 301 unchanged while adjusting the distance between the clip 3 and the push head 2. The elastic body 403 can be a spring, on this basis, the limit block 402 can be set as a circular ring structure, and the circular ring-shaped limit block 402 is sleeved on the slide bar 401, so that the spring can evenly abut the limit block 402, so that the slide bar 401 is more evenly stressed.

[0052] On the basis of setting the adjusting member 5 to compress the elastic body 403, as Figures 2 to 4As shown, as an implementable manner, the end surface of the slide bar 401 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 penetrates the side wall of the push head 2 and is rotatably connected to the push head 2; the end surface of the rotating rod 501 close to the slide bar 401 is a second inclined surface 501a; the first inclined surface 401a and the second inclined surface 501a can be completely fitted to form the clip 3 fitted on the push head 2. To facilitate the rotation of the rotating rod 501, the adjusting member 5 also includes a rotating paddle 502 located outside the cavity 201 and fixedly connected to the rotating rod 501.

[0053] By setting the adjustment member 5 to include a rotating rod 501, and setting the first inclined surface 401a and the second inclined surface 501a to be completely in contact with each other, 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 and the first inclined surface 401a are not completely in contact with each other. Under the guidance of the second inclined surface 501a, the sliding rod 401 is pushed to drive 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 only pushing the rotating paddle 502, which has the effect of facilitating use and adjustment.

[0054] The first inclined surface 401a and the second inclined surface 501a are arranged to be completely in contact with each other. When the first inclined surface 401a and the second inclined surface 501a are completely in contact with each other, the clip 3 completely abuts against the push head 2. As the contact area between the first inclined surface 401a and the second inclined surface 501a is different, the distance between the clip 3 and the push head 2 changes to adapt to syringe piston handles 1001 of different models and thicknesses.

[0055] To facilitate adjusting the distance between the push 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 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 7 allows 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, so that the distance between the push head 2 and the injection pump body 1 can be adjusted 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 against 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, so as to achieve 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 the axial direction; the clutch member 7 includes 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 that meshes the first meshing tooth 7021 with the second meshing tooth 7031; a transmission member 8 that can compress the elastic member 9 to separate the first meshing tooth 7021 from the second meshing tooth 7031 is arranged between the clutch bar 703 and the rotating rod 501.

[0058] It can be understood that the opening direction of the first meshing tooth 7021 is perpendicular to the length direction of the connecting rod 6. As set above, when the first meshing tooth 7021 meshes with the second meshing tooth 7031 under the action of the elastic member 9, the connecting rod 6 and the protrusion 702 will not be relatively displaced, and the connecting rod 6 moves synchronously with the nut seat 102. When the transmission member 8 compresses the elastic member 9 and disengages the first meshing tooth 7021 from the second meshing tooth 7031, the connecting rod 6 and the protrusion 702 can slide relative to each other, so that the connecting rod 6 and the nut seat 102 slide relative to each other.

[0059] On the basis of setting the adjusting member 5 as the rotating rod 501, as 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 sleeved on the outside of the rotating rod 501, a second bevel gear 803 meshing with the first bevel gear 802 and sleeved 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 winding shaft 801 is driven to rotate under the driving action of the first bevel gear 802 and the second bevel gear 803. After the cable 804 is wound around the winding shaft 801, the clutch bar 703 is pulled to compress the elastic member 9, and the first meshing teeth 7021 and the second meshing teeth 7031 are disengaged. The rotating rod 501 will simultaneously drive the clip 3 to move to the side away from the push head 2. At this time, the distance between the push 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 push head 2. After the rotating rod 501 is released, the first meshing teeth 7021 and the second meshing teeth 7031 of the elastic member 9 are meshed, and under the action of the elastic body 403, the clip 3 moves to the side close to the push head 2 to clamp the syringe piston handle 1001.

[0061] Based on the transmission member 8 arranged as above, in order to improve the transmission stability of the transmission member 8, as 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 the sleeve 901, the guide rod 902 and the resilient body 903, the elastic member 9 can drive the clutch bar 703 to move in the radial direction of the connecting rod 6 when compressed, without causing misalignment in the axial direction of the connecting rod 6, thereby improving the transmission stability of the transmission member 8. The spring is selected as the resilient body 903, so that the resilient body 903 has good fatigue resistance.

[0063] In the portable injection pump for medical treatment at sea described in the embodiment of the present application, when fixing the syringe on the injection pump body 1, the syringe finger flange is first clamped in the finger flange groove 103 on the injection pump body 1, and the rotating paddle 502 is turned. The rotating paddle 502 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 to the side away from the push head 2 to provide a holding space for the syringe piston handle 1001. At the same time, the rotating rod 501 rotates and the winding shaft 801 rotates under the action of the first bevel gear 802 and the second bevel gear 803, so that the cable 804 is wound on the winding shaft 801. At this time, the elastic member 9 compresses the first meshing tooth 7021 and the second meshing tooth 7031 to disengage, and the distance between the push head 2 and the injection pump body 1 can be adjusted according to the length of the syringe piston shaft 1002. After the rotating paddle 502 is released, the clamping piece 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 meshed under the action of the elastic member 9, so that the connecting rod 6 moves with the movement of the nut seat 102.

[0064] When the syringe piston handle 1001 is located between the clamp 3 and the push head 2, the syringe piston handle 1001 is clamped between the clamp 3 and the push head 2 under the rebound and reset action of the elastic body 403, which can be suitable for syringes of different models, 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 dosage of the injection liquid in the syringe, that is, according to the different exposed lengths of the syringe piston shaft 1002, thereby facilitating 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable injection pump for medical use at sea, comprising an injection 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) opening 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) connected to the clip (3) and pulling the clip (3) to move toward a side close to the push head (2) is arranged in the cavity (201); 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) which pushes the sliding rod (401) to slide, compresses the elastic body (403) and moves the clip (3) away from the push block.

2. The portable injection pump for marine medical 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 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) to be rotatably connected with the pushing head (2); 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) fitting on the pusher head (2).

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

4. The portable injection pump for marine medical use according to claim 2, characterized in that: 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 component (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.

5. The portable injection pump for marine medical use according to claim 4, characterized in that: The connecting rod (6) is a hollow tubular structure and is connected to the cavity (201); a through hole (601) is provided on the circumferential side wall of the connecting rod (6) along the 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 enabling the first meshing teeth (7021) to mesh with the second meshing teeth (7031); A transmission member (8) is arranged between the clutch bar (703) and the rotating rod (501) and can compress the elastic member (9) to separate the first meshing teeth (7021) from the second meshing teeth (7031).

6. The portable injection pump for offshore medical use according to claim 5, characterized in that: The transmission member (8) comprises: A winding shaft (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 winding shaft (801), a cable (804) having one end fixedly connected to the winding shaft (801) and the other end fixedly connected to the clutch bar (703), and a reversing ring (805) fixedly connected to the inner wall of the connecting rod (6) and allowing 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).

7. The portable injection pump for marine medical use according to claim 5, 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).

8. The portable injection pump for marine medical use according to claim 7, characterized in that: The resilient body (903) is a spring.

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