CN112245762B - Central venous catheter tube sealing pump - Google Patents
Central venous catheter tube sealing pump Download PDFInfo
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- CN112245762B CN112245762B CN202011256689.6A CN202011256689A CN112245762B CN 112245762 B CN112245762 B CN 112245762B CN 202011256689 A CN202011256689 A CN 202011256689A CN 112245762 B CN112245762 B CN 112245762B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/20—Closure caps or plugs for connectors or open ends of tubes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M2025/0019—Cleaning catheters or the like, e.g. for reuse of the device, for avoiding replacement
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/60—General characteristics of the apparatus with identification means
- A61M2205/6009—General characteristics of the apparatus with identification means for matching patient with his treatment, e.g. to improve transfusion security
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Pulmonology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a central venous catheter tube sealing pump which comprises a shell, wherein an accommodating cavity is formed in the shell, a connecting ring is arranged on the shell, the connecting ring is positioned at an opening of the accommodating cavity and is superposed with the central line of the accommodating cavity, a positioning protective cover is detachably arranged on the connecting ring, and an opening is formed in the upper end of the positioning protective cover; the accommodating cavity is internally provided with an injector, and the head of the injector extends out of the accommodating cavity and is positioned in the positioning protective cover; the shell is internally provided with a syringe pump matched with the syringe for use. On one hand, the invention effectively reduces the thrombus incidence of the double-cavity central venous catheter of the hemodialysis patient; on the other hand, the generation of blood coagulation phenomenon is avoided, so that a new catheter needs to be replaced, the pain of a patient is reduced, and the economic burden of the patient is reduced. Has the advantages of simple structure, convenient operation, difficult damage, low manufacturing cost and the like.
Description
Technical Field
The invention relates to a tube sealing pump, in particular to a central venous catheter tube sealing pump and a using method thereof.
Background
When a patient is dialyzed, the tube needs to be sealed by heparin sodium after each dialysis. After an interval of approximately 48 hours, a further hemodialysis is required. During this time, the contents of the catheter are susceptible to clotting. When hemodialysis is performed again, hemolytic drugs need to be injected first, and hemodialysis can be performed again after hemodialysis is performed again. On one hand, the thrombus occurrence rate of the double-cavity central venous catheter of a maintenance hemodialysis patient is still high through the dialysis and the catheter sealing by the heparin sodium; on the other hand, when the blood coagulation phenomenon is solved, the catheter is not easy to be unobstructed, so that a new catheter needs to be replaced, the pain is brought to the patient, and the economic burden of the patient is increased.
Therefore, those skilled in the art are devoted to develop a central venous catheter lock pump and method of use that solve the above-mentioned problems.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a central venous catheter lock pump and a method for using the same.
In order to achieve the purpose, the invention provides a central venous catheter tube sealing pump which comprises a first pump body, a second pump body and a flow dividing unit, wherein the first pump body and the second pump body are arranged in a split mode or integrally connected, the first pump body comprises a shell, a containing cavity is formed in the shell, a connecting ring is arranged on the shell, the connecting ring is positioned at an opening of the containing cavity and is overlapped with the central line of the containing cavity, a positioning protective cover is detachably arranged on the connecting ring, and an opening is formed in the upper end of the positioning protective cover;
the accommodating cavity is internally provided with a syringe, and the head of the syringe extends out of the accommodating cavity and is positioned in the positioning protective cover; the shell is internally provided with an injection pump matched with the injector for use, and the first pump body and the second pump body have the same structure;
the flow dividing unit comprises a flow dividing box body, a partition plate is arranged in the flow dividing box body, two ends of the partition plate are respectively connected with the inner wall of the flow dividing box body, two flow dividing pieces which are identical in structure and symmetrically arranged are arranged in the flow dividing box body, and the partition plate is positioned between the two flow dividing pieces;
the flow dividing piece comprises two connecting pipes and two guide plates, the lower ends of the connecting pipes are respectively connected with injectors arranged in the first pump body and the second pump body, the upper ends of the connecting pipes are respectively connected with the lower ends of an arterial pipe and a venous pipe, the upper ends of the arterial pipe and the venous pipe are connected with the lower end of the sealing pipe, the two ends of each guide plate are respectively connected with the partition plate and the inner wall of the flow dividing box body, the connecting pipes are positioned between the two guide plates, each guide plate is provided with a guide opening, a squeezing plate is arranged between the guide plates, the two ends of the squeezing plate respectively penetrate through the partition plates through the guide openings and are respectively sleeved on the guide rods, the two ends of each guide rod are respectively connected with the partition plate and the inner wall of the flow dividing box body, one end of a screw rod is rotatably connected with the squeezing plate, the other end of the screw rod extends out of the shunt box body and is provided with a knob, and the screw rod is in threaded connection with the shunt box body.
Preferably, the injector comprises a push rod, a needle cylinder and a needle head, the push rod is inserted into the needle cylinder from the rear end of the needle cylinder and can move, a positioning cavity is formed in the rear end of the push rod, and the needle head is positioned at the opening;
the injection pump is characterized in that a positioning rod matched with the positioning cavity is arranged in the accommodating cavity, the positioning cavity is sleeved on the positioning rod, and the injection pump is matched with the injector through the positioning rod.
Preferably, the rear end of the push rod is provided with first limiting teeth, and the first limiting teeth are arranged along the edge of the rear end of the push rod in a circle;
and a second limiting tooth matched with the first limiting tooth for use is arranged in the accommodating cavity.
Preferably, each guide rod is sleeved with a return spring; each guide opening on the guide plate is two respectively, the stripper plate comprises a first plate body, a plurality of convex edges are arranged on the front surface of the first plate body, the cross section of each convex edge is semicircular, each adjacent two convex edges are arranged at intervals, the back surface of the first plate body is rotatably connected with the screw rod, two second plate bodies are arranged on the back surface of the first plate body, the screw rod is positioned between the two second plate bodies, two ends of each second plate body penetrate through the guide plate through each guide opening respectively and are connected through a third plate body, the third plate body is slidably sleeved on the guide rod, and the cross section of the knob is triangular.
Preferably, the positioning protective cover comprises a connecting portion and an extending portion, the connecting portion is detachably connected with the connecting ring, the upper end of the connecting portion is connected with the lower end of the extending portion, the cross section of the extending portion gradually decreases from bottom to top, and the extending portion and the connecting portion are of an integrally formed structure.
Preferably, the inner wall of the connecting part is provided with an internal thread, the outer wall of the connecting ring is provided with an external thread matched with the internal thread, and the connecting part is in threaded connection with the connecting ring.
Preferably, the shell is provided with a display screen, a control button and a first label sticker;
a display screen: used for displaying date, input dosage on the current day and last large dosage information;
first label pasting: used for sticking the serial number of the injection pump;
the flow distribution box body is provided with two second label stickers which are matched with the first label sticker for use.
Preferably, the upper end of the shunt box body is provided with two first through holes, each connecting pipe is respectively connected with the arterial pipe and the venous pipe through each first through hole, and the lower end of the shunt box body is provided with two second through holes for each connecting pipe to penetrate through.
Preferably, the artery pipe and the vein pipe are both provided with closure clamps.
A method for using a central venous catheter tube sealing pump comprises the steps of respectively placing syringes provided with medicines in accommodating cavities of a first pump body and a second pump body, connecting each positioning protective cover with a connecting ring so as to limit the syringes of the first pump body and the second pump body, respectively connecting the lower ends of connecting pipes with the syringes in the first pump body and the second pump body, respectively connecting the upper ends of the connecting pipes with the lower ends of an arterial tube and a venous tube, wherein the lower end of the tube sealing is simultaneously connected with the arterial tube and the venous tube;
when a connecting pipe connected with the first pump body or the second pump body needs to be sealed, a knob is rotated by hands, a screw rod is driven to rotate through the knob so as to push a first plate body to move, the connecting pipe is extruded through the first plate body so as to seal the connecting pipe, and a plurality of convex edges arranged on the first plate body are tightly attached to the connecting pipe so as to improve the pipe sealing effect; the first plate body moves and simultaneously drives the two second plate bodies to move along the length direction of each guide opening, each second plate body is sleeved on each guide rod, and the first plate body is positioned and guided through each guide rod and each guide opening; the first label pastes arranged on the first pump body and the second pump body are matched with the second label pastes in a one-to-one correspondence mode, misoperation when the connecting pipe is closed is prevented, and when liquid medicine in each injector needs to be refilled, the protective cover is unscrewed to take out the injector for refilling.
The invention has the beneficial effects that: the first pump body and the second pump body are respectively arranged to carry out pulse injection and continuous injection, so that the blood coagulation phenomenon of a patient after dialysis is prevented after 48 hours; when a connecting pipe connected with the first pump body or the second pump body needs to be sealed, a knob is rotated by hands, the knob drives the screw rod to rotate so as to push the first plate body to move, the connecting pipe is extruded through the first plate body so as to seal the connecting pipe, and the medicine is prevented from being added to the pump body due to misoperation of medical staff in actual operation; the pipe sealing effect is improved by the close fit of the plurality of convex edges arranged on the first plate body and the connecting pipe; the first plate body moves and simultaneously drives the two second plate bodies to move along the length direction of each guide opening, each second plate body is sleeved on each guide rod, and the first plate body is positioned and guided through each guide rod and each guide opening, so that an operator can more easily push or pull the first plate body by rotating the knob, the stability of the whole structure is effectively improved, and the service life is prolonged; because the syringes in the first pump body and the second pump body are filled with different liquid medicines, the first label sticker and the second label sticker are arranged, and the first label stickers arranged on the first pump body and the second pump body are matched with the second label stickers in a one-to-one correspondence mode, so that misoperation during sealing of the connecting pipe is prevented. The invention effectively reduces the thrombus incidence of the double-cavity central venous catheter of the hemodialysis patient; meanwhile, the generation of blood coagulation phenomenon is avoided, so that the catheter needs to be replaced by a new catheter, the pain of a patient is reduced, and the economic burden of the patient is reduced. Has the advantages of simple structure, convenient operation, difficult damage, low manufacturing cost and the like.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the first pump body in the present invention.
Fig. 3 is a schematic structural view of the positioning protection cover in fig. 2 without being installed.
Fig. 4 is a schematic view of the syringe of fig. 3 without the syringe.
Fig. 5 is a schematic view of the structure of the syringe of the present invention.
Fig. 6 is a schematic view of the connection structure of the sealing tube and parts such as the arterial tube and the venous tube.
Fig. 7 is a schematic view of a first three-dimensional structure of the flow dividing unit of the present invention.
Fig. 8 is a second perspective view of the shunt unit of the present invention.
Fig. 9 is a schematic structural view of the shunt unit of the present invention without an upper cover.
Fig. 10 is a schematic view of the diverter of the present invention.
Fig. 11 is a schematic view of a connection structure of the first plate, the second plate, the third plate and other components in the present invention.
Fig. 12 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
example 1
As shown in fig. 1 to 11, a central venous catheter tube sealing pump includes a first pump body 100, a second pump body 101 and a flow dividing unit 102, wherein the first pump body 100 includes a housing 1, a receiving cavity 2 is opened on the housing 1, a connecting ring 3 is arranged on the housing 1, the connecting ring 3 is located at an opening of the receiving cavity 2 and coincides with a central line of the receiving cavity 2, a positioning protective cover 5 is detachably arranged on the connecting ring 3, and an opening 6 is arranged at an upper end of the positioning protective cover 5;
a syringe 7 is arranged in the accommodating cavity 2, and the head of the syringe 7 extends out of the accommodating cavity 2 and is positioned in the positioning protective cover 5; a syringe pump matched with the syringe 7 is arranged in the shell 1, and the first pump body 100 and the second pump body 101 have the same structure;
the flow dividing unit 102 comprises a flow dividing box body 103, a partition plate 105 is arranged in the flow dividing box body 103, two ends of the partition plate 105 are respectively connected with the inner wall of the flow dividing box body 103, two flow dividing pieces 106 which have the same structure and are symmetrically arranged are arranged in the flow dividing box body 103, and the partition plate 105 is positioned between the two flow dividing pieces 106;
the flow dividing member 106 includes two connection pipes 107 and two guide plates 108, a lower end of each connection pipe 107 is connected to the syringe 7 disposed in the first and second pump bodies 100 and 101, respectively, an upper end of each connection pipe 107 is connected to a lower end of the arterial tube 21 and a lower end of the venous tube 22, respectively, and in this embodiment, more preferably, the two connecting pipes 107 are detachably connected to the arterial tube 21 and the venous tube 22, respectively (it is only necessary to screw the connecting pipes 107 directly on the arterial tube 21 and the venous tube 22), this detachable connection is more convenient for the operator to use and replace parts thereof, for more convenient connection of the connection tube 107 to the arterial 21 and venous 22 tubes, the length of the upper ends of the two connecting pipes 107 can be prolonged, and the upper ends of the two connecting pipes 107 respectively extend out of the shunt box body 103 through the first through holes 128 and then are connected with the arterial pipe 21 and the venous pipe 22;
in addition, extension pipes (not shown in the figure) can be arranged at the heads of the two injectors 7, one end of each extension pipe is respectively connected with the head of each injector 7, the other end of each extension pipe penetrates out through the opening 6 arranged on the protective cover 5, and the lower ends of the two connecting pipes 107 can also extend out of the shunt box body 103 through the second through holes 129 and then be detachably connected with the extension pipes (the lower ends of the two connecting pipes 107 can be directly screwed up in the same way as the connecting pipes 107 are connected with the arterial pipe 21 and the venous pipe 22), so that the lower ends of the two connecting pipes 107 are respectively connected with the heads of the injectors through the extension pipes;
in summary, the upper and lower ends of the two connection pipes 107 are extended, so that the upper end of each connection pipe 107 can be connected to the arterial tube 21 and the venous tube 22 without disassembling the flow dividing box 103, and the lower end of each connection pipe 107 is connected to each injector 7 through each extension pipe, thereby further improving the efficiency and reducing the labor intensity of the operator.
The upper ends of the arterial tube 21 and the venous tube 22 are connected with the lower end of the sealing tube 20, two ends of each guide plate 108 are respectively connected with the partition plate 105 and the inner wall of the shunt box body 103, the connecting tube 107 is positioned between the two guide plates 108, each guide plate 108 is provided with a guide opening 109, a squeezing plate 111 is arranged between the guide plates 108, two ends of the squeezing plate 111 respectively penetrate through the partition plates 105 through the guide openings 109 and are respectively sleeved on the guide rods 113, two ends of each guide rod 113 are respectively connected with the partition plate 105 and the inner wall of the shunt box body 103, one end of a screw 115 is rotatably connected with the squeezing plate 111, the other end of the screw 115 extends out of the shunt box body 103 and is provided with a knob 116, and the screw 115 is in threaded connection with the shunt box body 103.
The injector 7 comprises a push rod 8, a needle cylinder 9 and a needle head 10, the push rod 8 is inserted into the needle cylinder 9 from the rear end of the needle cylinder 9 and can move, a positioning cavity 11 is formed in the rear end of the push rod 8, and the needle head 10 is positioned at the opening 6;
a positioning rod 12 matched with the positioning cavity 11 is arranged in the accommodating cavity 2, the positioning cavity 11 is sleeved on the positioning rod 12, and the injection pump is matched with the injector 7 through the positioning rod 12.
A first limiting tooth 13 is arranged at the rear end of the push rod 8, and the first limiting tooth 13 is arranged along the edge of the rear end of the push rod 8 in a circle;
and a second limiting tooth matched with the first limiting tooth 13 for use is arranged in the accommodating cavity 2.
A return spring 117 is sleeved on each guide rod 113; the number of the guide openings 109 on each guide plate 108 is two, the extrusion plate 111 includes a first plate body 118, the front surface of the first plate body 118 is provided with a plurality of protruding ribs 121, the cross section of each protruding rib 121 is semicircular, the two adjacent protruding ribs 121 are arranged at intervals, the back surface of the first plate body 118 is rotatably connected with the screw rod 115, the back surface of the first plate body 118 is provided with two second plate bodies 123, the screw rod 115 is located between the two second plate bodies 123, two ends of each second plate body 123 respectively penetrate through the guide plates 108 through the guide openings 109 and are connected through a third plate body 126, the third plate body 126 is slidably sleeved on the guide rod 113, and the cross section of the knob 116 is triangular.
The positioning protective cover 5 comprises a connecting portion 15 and an extending portion 16, the connecting portion 15 is detachably connected with the connecting ring 3, the upper end of the connecting portion 15 is connected with the lower end of the extending portion 16, the cross section of the extending portion 16 gradually decreases from bottom to top, and the extending portion 16 and the connecting portion 15 are of an integrally formed structure.
The inner wall of the connecting part 15 is provided with internal threads, the outer wall of the connecting ring 3 is provided with external threads matched with the internal threads, and the connecting part 15 is in threaded connection with the connecting ring 3.
The shell 1 is provided with a display screen 17, a control button 18 and a first label sticker 19;
the display screen 17: used for displaying date, input dosage on the current day and last large dosage information;
first label sticker 19: used for sticking the serial number of the injection pump;
the diverter box body 103 is provided with two second labels 127 which are matched with the first labels 19 for use.
Two first through holes 128 are formed in the upper end of the shunt box body 103, the connecting pipes 107 are respectively connected with the arterial tube 21 and the venous tube 22 through the first through holes 128, and two second through holes 129 for the connecting pipes 107 to penetrate are formed in the lower end of the shunt box body 103.
The artery tube 21 and the vein tube 22 are both provided with closure clamps 23.
Example 2
The present embodiment is further optimized based on embodiment 1, and is substantially the same as embodiment 1, except that in this embodiment, only the first pump body 100 (as shown in fig. 12) is provided, the second pump body is not provided, and two accommodating cavities are provided in the first pump body 100, a syringe for accommodating a drug is provided in each accommodating cavity, and each syringe is connected to the arterial tube 21 and the venous tube 22 through each connecting tube 107, in this embodiment, injection of a drug is achieved by simultaneously controlling two syringes through the first pump body 100. Because the pump body exposes and carries outside the human body, this embodiment optimizes two pump bodies into a pump body, has reduced the pump body number, makes its carry more convenient.
A method for using a central venous catheter tube sealing pump comprises the steps of respectively placing syringes 7 provided with medicines in accommodating cavities 2 of a first pump body 100 and a second pump body 101, connecting positioning protective covers 5 with connecting rings 3 to limit the syringes 7 of the first pump body 100 and the second pump body 101, respectively connecting the lower ends of connecting pipes 107 with the syringes 7 in the first pump body 100 and the second pump body 101, respectively connecting the upper ends of the connecting pipes 107 with the lower ends of an arterial tube 21 and a venous tube 22, and connecting the upper ends of the arterial tube 21 and the venous tube 22 with the lower end of a sealing tube 20;
when the connecting pipe 107 connected with the first pump body 100 or the second pump body 101 needs to be sealed, the knob 116 is rotated by hands, the screw 115 is driven by the knob 116 to rotate so as to push the first plate 118 to move, the connecting pipe 107 is extruded by the first plate 118 so as to seal the connecting pipe 107, and the plurality of convex edges 121 arranged on the first plate 118 are tightly attached to the connecting pipe 107 so as to improve the pipe sealing effect; the first plate body 118 is driven to move along the length direction of each guide opening 109 while moving, each second plate body 123 is sleeved on each guide rod 113, and the first plate body 118 is positioned and guided through each guide rod 113 and each guide opening 109; the first label stickers 19 provided on the first pump body 100 and the second pump body 101 are used in one-to-one correspondence with the second label stickers 127, so as to prevent an erroneous operation when the connection tube 107 is closed, and when the medical fluid in each syringe 7 needs to be refilled, the shield 5 is unscrewed to take out the syringe 7 for refilling.
When a patient is dialyzed, the tube needs to be sealed by heparin sodium after each dialysis. After an interval of approximately 48 hours, a further hemodialysis is required. During this time, the contents of the catheter are susceptible to clotting. When hemodialysis is performed again, hemolytic drugs need to be injected first, and hemodialysis can be performed again after hemodialysis is performed again.
After dialysis of a patient with maintenance hemodialysis by using a double-cavity central venous catheter is finished, heparin sodium is conventionally used for sealing the catheter so as to prevent the catheter from being blocked due to thrombus formation. Even so, the incidence of thrombosis in double lumen central venous catheters in maintenance hemodialysis patients remains high. The invention discloses a double-cavity central venous catheter, which aims to reduce the thrombus incidence rate and prolong the service life of the double-cavity central venous catheter.
Sodium heparin, urokinase;
continuous injection;
two pumps, one for pulse injection and one for continuous injection
If the double-cavity central venous catheter is seriously thrombus, a patient can not carry out hemodialysis treatment, urokinase thrombolysis treatment is needed until the hemodialysis treatment can be carried out after the catheter is unobstructed. If urokinase thrombolysis is unsuccessful, the patient needs to replace the catheter with a new one. Therefore, the pain is brought to the patient, and the economic burden of the patient is increased.
We mainly used drug urokinase added continuously by pump.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A central venous catheter tube sealing pump is characterized in that: the pump comprises a first pump body (100), a second pump body (101) and a flow dividing unit (102), wherein the first pump body (100) comprises a shell (1), a containing cavity (2) is formed in the shell (1), a connecting ring (3) is arranged on the shell (1), the connecting ring (3) is positioned at an opening of the containing cavity (2) and is overlapped with the central line of the containing cavity (2), a positioning protective cover (5) is detachably arranged on the connecting ring (3), and an opening (6) is formed in the upper end of the positioning protective cover (5);
an injector (7) is arranged in the accommodating cavity (2), and the head of the injector (7) extends out of the accommodating cavity (2) and is positioned in the positioning protective cover (5); a syringe pump matched with the syringe (7) is arranged in the shell (1), and the first pump body (100) and the second pump body (101) have the same structure;
the flow dividing unit (102) comprises a flow dividing box body (103), a partition plate (105) is arranged in the flow dividing box body (103), two ends of the partition plate (105) are respectively connected with the inner wall of the flow dividing box body (103), two flow dividing pieces (106) which are identical in structure and symmetrically arranged are arranged in the flow dividing box body (103), and the partition plate (105) is located between the two flow dividing pieces (106);
the flow dividing part (106) comprises two connecting pipes (107) and two guide plates (108), the lower end of each connecting pipe (107) is respectively connected with an injector (7) arranged in the first pump body (100) and the second pump body (101), the upper end of each connecting pipe (107) is respectively connected with the lower ends of an arterial pipe (21) and a venous pipe (22), the upper ends of the arterial pipe (21) and the venous pipe (22) are connected with the lower end of the sealing pipe (20), the two ends of each guide plate (108) are respectively connected with the partition plate (105) and the inner wall of the flow dividing box body (103), the connecting pipes (107) are positioned between the two guide plates (108), each guide plate (108) is provided with a guide opening (109), a squeezing plate (111) is arranged between the guide plates (108), and the two ends of the squeezing plate (111) respectively penetrate through the partition plate (105) through the guide openings (109) and are respectively sleeved on the guide rods (108) 113) Two ends of each guide rod (113) are respectively connected with the partition plate (105) and the inner wall of the shunt box body (103), one end of a screw rod (115) is rotatably connected with the extrusion plate (111), the other end of the screw rod (115) extends out of the shunt box body (103) and is provided with a knob (116), and the screw rod (115) is in threaded connection with the shunt box body (103).
2. The central venous catheter lock pump of claim 1 wherein: the injector (7) comprises a push rod (8), a needle cylinder (9) and a needle head (10), the push rod (8) is movably inserted into the needle cylinder (9) from the rear end of the needle cylinder (9), a positioning cavity (11) is formed in the rear end of the push rod (8), and the needle head (10) is positioned at the opening (6);
a positioning rod (12) matched with the positioning cavity (11) is arranged in the accommodating cavity (2), the positioning cavity (11) is sleeved on the positioning rod (12), and the injection pump is matched with the injector (7) through the positioning rod (12).
3. The central venous catheter lock pump of claim 2 wherein: a first limiting tooth (13) is arranged at the rear end of the push rod (8), and the first limiting tooth (13) is arranged along the edge of the rear end of the push rod (8) in a circle;
and a second limiting tooth matched with the first limiting tooth (13) for use is arranged in the accommodating cavity (2).
4. The central venous catheter lock pump of claim 1 wherein: each guide rod (113) is sleeved with a return spring (117); two guide openings (109) are formed in each guide plate (108), the extrusion plate (111) comprises a first plate body (118), the front surface of the first plate body (118) is provided with a plurality of convex ribs (121), the cross section of each convex rib (121) is semicircular, two adjacent convex ribs (121) are arranged at intervals, the back surface of the first plate body (118) is rotationally connected with the screw rod (115), two second plate bodies (123) are arranged on the back surface of the first plate body (118), the screw rod (115) is positioned between two second plate bodies (123), two ends of each second plate body (123) respectively penetrate through the guide plate (108) through the guide openings (109) and are connected through a third plate body (126), the third plate body (126) is slidably sleeved on the guide rod (113), and the cross section of the knob (116) is triangular.
5. The central venous catheter lock pump of claim 1 wherein: the positioning protective cover (5) comprises a connecting portion (15) and an extending portion (16), the connecting portion (15) is detachably connected with the connecting ring (3), the upper end of the connecting portion (15) is connected with the lower end of the extending portion (16), the cross section of the extending portion (16) gradually decreases from bottom to top, and the extending portion (16) and the connecting portion (15) are of an integrally formed structure.
6. The central venous catheter lock pump of claim 5 wherein: the inner wall of the connecting part (15) is provided with internal threads, the outer wall of the connecting ring (3) is provided with external threads matched with the internal threads, and the connecting part (15) is in threaded connection with the connecting ring (3).
7. The central venous catheter lock pump of claim 1 wherein: the shell (1) is provided with a display screen (17), a control button (18) and a first label sticker (19);
display screen (17): used for displaying date, input dosage on the current day and last large dosage information;
first label (19): used for sticking the serial number of the injection pump;
and two second label stickers (127) matched with the first label sticker (19) for use are arranged on the flow distribution box body (103).
8. The central venous catheter lock pump of claim 1 wherein: two first through holes (128) are formed in the upper end of the shunt box body (103), the connecting pipes (107) are respectively connected with the arterial tube (21) and the venous tube (22) through the first through holes (128), and two second through holes (129) for the connecting pipes (107) to penetrate through are formed in the lower end of the shunt box body (103).
9. The central venous catheter lock pump of claim 8 wherein: the artery pipe (21) and the vein pipe (22) are both provided with an intercepting clamp piece (23).
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| CN202011256689.6A CN112245762B (en) | 2020-11-11 | 2020-11-11 | Central venous catheter tube sealing pump |
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| CN202011256689.6A CN112245762B (en) | 2020-11-11 | 2020-11-11 | Central venous catheter tube sealing pump |
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| CN113144414A (en) * | 2021-04-16 | 2021-07-23 | 四川大学华西医院 | Thoracic cavity closed drainage tube clamping device |
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