CN118383844A - Puncture tube and thrombus inspection method - Google Patents
Puncture tube and thrombus inspection method Download PDFInfo
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- CN118383844A CN118383844A CN202410535421.8A CN202410535421A CN118383844A CN 118383844 A CN118383844 A CN 118383844A CN 202410535421 A CN202410535421 A CN 202410535421A CN 118383844 A CN118383844 A CN 118383844A
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title description 16
- 238000007689 inspection Methods 0.000 title description 5
- 239000008280 blood Substances 0.000 claims abstract description 299
- 210000004369 blood Anatomy 0.000 claims abstract description 296
- 210000003462 vein Anatomy 0.000 claims abstract description 18
- 238000001631 haemodialysis Methods 0.000 claims description 50
- 230000000322 hemodialysis Effects 0.000 claims description 50
- 238000012360 testing method Methods 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 7
- 210000003734 kidney Anatomy 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229960002897 heparin Drugs 0.000 description 2
- 229920000669 heparin Polymers 0.000 description 2
- 210000004185 liver Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000009256 replacement therapy Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 230000010100 anticoagulation Effects 0.000 description 1
- 230000004872 arterial blood pressure Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1621—Constructional aspects thereof
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Urology & Nephrology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Emergency Medicine (AREA)
- Vascular Medicine (AREA)
- Hematology (AREA)
- Gastroenterology & Hepatology (AREA)
- Anesthesiology (AREA)
- External Artificial Organs (AREA)
Abstract
The application provides a puncture tube and a thrombus detection method. The blood drawing outer tube comprises a drainage outer hole. The inner tube and the outer tube can be connected in a pluggable manner, the inner tube is arranged in the outer tube, the inner tube comprises a drainage inner hole, the outer drainage hole is communicated with the inner drainage hole, and the outer drainage hole and the inner drainage hole are used for introducing blood in the central vein. The blood return outer tube comprises a return outer hole, and the blood return outer tube is connected with the blood drawing outer tube. The blood return inner tube and the blood return outer tube are connected in a pluggable manner, the blood return inner tube is arranged in the blood return outer tube, the blood return outer tube comprises a return inner hole, the return outer hole is communicated with the return inner hole, and the return outer hole and the return inner hole are used for returning blood to the central vein. The application solves the problem that the puncture needs to be repeated after the existing puncture tube is checked for thrombus, thereby reducing the frequent puncture risk and the puncture operation difficulty and avoiding the need of changing or stopping the treatment scheme.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a puncture tube and a thrombus detection method.
Background
Patients currently undergoing temporary kidney replacement or artificial liver treatment require access to be established using a puncture tube and central vein. Because of the large individual variability of the anticoagulation scheme in the kidney replacement therapy process due to the anatomical factors of the level of the puncture technique of the operator who completes the puncture tube, the volume of the patient, the vessel shape of the patient, and the like, different types of alarm prompts may appear in the hemodialysis machine in the kidney replacement therapy process.
The alarm prompt may be caused by improper position of the puncture tube (such as the side hole of the puncture tube is clung to the vessel wall), improper anticoagulant amount or local thrombus formed at the head end of the puncture tube or in some parts of the matched pipeline of the hemodialysis machine.
In order to determine whether an alarm prompt is caused by local thrombus formed at the head end of the puncture tube, the central venous puncture tube can be pulled out to check whether thrombus exists at the head end of the pipeline, and although the method can check whether the thrombus exists in the pipeline or not, the puncture tube of the central vein must be re-reserved for continuing the treatment such as kidney substitution or artificial liver. Frequent lancing operations on a patient can increase a series of risks associated with lancing and increase the difficulty of subsequent lancing operations. Because the existing puncture tube cannot be checked for thrombus by a simple and direct-viewing method, repeated puncture is required after the puncture tube is checked for thrombus in clinical work, and a series of problems such as increased puncture risk, difficulty in puncture operation, and the need to change or terminate a treatment scheme are caused.
Disclosure of Invention
The application aims to provide a puncture tube capable of avoiding repeated puncture after thrombus is detected, which comprises an outer blood drawing tube, an inner blood drawing tube, an outer blood returning tube and an inner blood returning tube. The blood drawing outer tube comprises a drainage outer hole. The blood drawing inner tube is connected with the blood drawing outer tube in a pluggable manner, the blood drawing inner tube is arranged in the blood drawing outer tube, the blood drawing inner tube comprises a drainage inner hole, the drainage outer hole is communicated with the drainage inner hole, and the drainage outer hole is used for introducing blood in a central vein. The blood return outer tube comprises a reflux outer hole, and the blood return outer tube is connected with the blood drawing outer tube. The blood return inner tube is connected with the blood return outer tube in a pluggable manner, the blood return inner tube is arranged in the blood return outer tube, the blood return outer tube comprises a backflow inner hole, the backflow outer hole is communicated with the backflow inner hole, and the backflow outer hole is used for back transfusion of blood into a central vein.
Optionally, the blood drawing inner tube includes a first exposed section, and the first exposed section is exposed to the blood drawing outer tube.
Optionally, the puncture tube further includes a first buckle and a first protrusion, the first buckle is disposed on the first exposed section, the first protrusion is disposed on the blood-drawing outer tube, and the first buckle is clamped to the first protrusion.
Optionally, the first buckle and the end face of the first exposed section are arranged between the first protrusion and the end face of the blood drawing outer tube.
Optionally, the blood return inner tube includes a second exposed section, and the second exposed section is exposed to the blood return outer tube.
Optionally, the puncture tube further includes a second buckle and a second protrusion, the second buckle is disposed on the second exposed section, the second protrusion is disposed on the blood return outer tube, and the second buckle is clamped to the second protrusion.
Optionally, the second buckle is arranged between the end face of the second exposed section and the end face of the second protrusion is arranged between the end face of the blood return outer tube.
Optionally, the outer wall of the blood drawing inner tube is tangent to the inner wall of the blood drawing outer tube.
Optionally, the outer wall of the back blood inner tube is tangent to the inner wall of the back blood outer tube.
The present application also provides a thrombus testing method using a hemodialysis machine and the puncture tube, the hemodialysis machine being connected to the blood drawing inner tube, the hemodialysis machine being connected to the blood returning inner tube, comprising the steps of:
when the hemodialysis machine generates an alarm signal of the pressure exceeding value of the inner tube of the blood drawing, the inner tube of the blood drawing is pulled out, and whether thrombus exists in the inner tube of the blood drawing is judged; and
When the hemodialysis machine generates an alarm signal of the pressure exceeding value of the blood return inner tube, the blood return inner tube is pulled out, and whether thrombus exists in the blood return inner tube is judged.
The application has the beneficial effects that: by arranging an outer blood drawing tube, an inner blood drawing tube, an outer blood returning tube and an inner blood returning tube. The blood drawing outer tube comprises a drainage outer hole. The inner and outer tube are connected in pluggable mode, the inner tube is arranged in the outer tube, and comprises a drainage inner hole, and the outer drainage hole is communicated with the inner drainage hole. The blood return outer tube comprises a return outer hole, and the blood return outer tube is connected with the blood drawing outer tube. The blood return inner tube and the blood return outer tube are connected in a pluggable manner, the blood return inner tube is arranged in the blood return outer tube, and the blood return outer tube comprises a return inner hole, and the return outer hole is communicated with the return inner hole.
Because the inner blood drawing tube and the outer blood drawing tube are connected in a pluggable manner, and the inner blood returning tube and the outer blood returning tube are connected in a pluggable manner. Therefore, when the puncture tube is checked for thrombus, only the inner blood drawing tube and the inner blood returning tube are needed to be taken out for checking for thrombus, the outer blood drawing tube and the outer blood returning tube are not needed to be taken out, namely, the puncture of the puncture tube is not needed to be carried out again after the thrombus is checked, and repeated puncture operation is avoided.
The foregoing description is only an overview of the technical solution of the present application, and in order to make the technical means of the present application more clearly understood, the present application can be implemented according to the content of the specification, and the following detailed description of the preferred embodiments of the present application will be given with reference to the accompanying drawings.
Drawings
FIG. 1 is a cross-sectional view of a puncture tube and a partial enlarged view thereof (only one of the first buckle, the first protrusion, the second buckle, and the second protrusion are shown in each case) in a first embodiment of the present application;
FIG. 2 is a schematic illustration of the connection between the puncture tube and the hemodialysis machine (the blood drawing tube and the blood return tube are drawn after being broken, and the number of the first buckle, the first protrusion, the second buckle and the second protrusion are only one in each case);
FIG. 3 is a partial cross-sectional view of an outer and inner blood drawing tube and a cross-sectional view of a first clasp and first protrusion in a first embodiment of the application;
FIG. 4 is a partial perspective view of an outer and inner blood drawing tube and a perspective view of a first clasp and first protrusion according to a first embodiment of the present application;
FIG. 5 is a partial cross-sectional view of an outer blood return tube and an inner blood return tube and a cross-sectional view of a second clasp and a second protrusion in a first embodiment of the application;
FIG. 6 is a partial perspective view of an outer blood return tube and an inner blood return tube and a perspective view of a second clasp and a second protrusion in a first embodiment of the present application;
Fig. 7 is a flowchart of a thrombus inspection method in a second embodiment of the present application.
Wherein, the reference numerals:
1. Puncture tube
10. Blood drawing outer tube
100. Drainage outer hole
11 Inner tube for drawing blood
110. Drainage inner hole
111. A first exposed section
12. Blood return outer tube
120. Reflux outer hole
13. Blood return inner tube
130. Reflux inner hole
131. A second exposed section
14. First fastener
140. A first transverse part
141. First vertical part
142. First handle part
15. First protrusion
16. Second fastener
160. A second transverse part
161. Second vertical part
162. A second handle portion
17. Second protrusion
2. Hemodialysis machine
21. Vascular drainage channel
22. Blood return channel
A1 First plane
A2 Second plane
S1-S2: procedure of thrombus examination method
Detailed Description
Further advantages and effects of the present application will become apparent to those skilled in the art from the disclosure of the present application, which is described in the following specific examples.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments. In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, shall fall within the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the mechanical connection and the electrical connection can be adopted; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
First embodiment
As shown in fig. 1, in the present embodiment, there is provided a puncture tube 1 including an outer blood drawing tube 10, an inner blood drawing tube 11, an outer blood returning tube 12, and an inner blood returning tube 13. The blood drawing outer tube 10 includes a drainage outer hole 100. The blood drawing inner tube 11 and the blood drawing outer tube 10 are connected in a pluggable manner, the blood drawing inner tube 11 is arranged in the blood drawing outer tube 10, the blood drawing inner tube 11 comprises a drainage inner hole 110, a drainage outer hole 100 and the drainage inner hole 110 are communicated, and the drainage outer hole 100 and the drainage inner hole 110 are used for introducing blood in a central vein. The outer blood return tube 12 includes an outer return orifice 120, and the outer blood return tube 12 is connected to the outer blood collection tube 10. The blood return inner tube 13 and the blood return outer tube 12 are connected in a pluggable manner, the blood return inner tube 13 is arranged in the blood return outer tube 12, the blood return outer tube 12 comprises a return inner hole 130, the return outer hole 120 is communicated with the return inner hole 130, and the return outer hole 120 and the return inner hole 130 are used for returning blood to the central vein.
Referring to fig. 1, a puncture tube 1 may be connected to a hemodialysis machine 2 (see fig. 2 for hemodialysis machine 2, the following). The upper end of the puncture tube 1 can puncture into the central vein of the patient. The lower end of the puncture tube 1 can be connected with a hemodialysis machine 2. The inner tube 11 may be inserted into the outer tube 10 or withdrawn from the outer tube 10 along the longitudinal direction of the outer tube 10. The inner wall of the blood drawing outer tube 10 and the inner and outer walls of the blood drawing inner tube 11 may be provided with heparin coating to reduce the possibility of local micro-thrombosis. The outer diameter of the inner blood drawing tube 11 may be smaller than or equal to the inner diameter of the outer blood drawing tube 10.
As shown in fig. 1, the inner and outer blood drawing tubes 11 and 10 may be connected in a pluggable manner by means of shaft-to-shaft fit (i.e., the inner blood drawing tube 11 is a shaft, the inner wall of the outer blood drawing tube 10 encloses a synthetic hole, and the inner blood drawing tube 11 is inserted into the synthetic hole enclosed by the inner wall of the outer blood drawing tube 10). When the inner tube 11 is pulled out, the position of the outer tube 10 remains unchanged.
As shown in fig. 1, the drainage outer holes 100 may be located at the upper end and the tip of the blood-drawing outer tube 10. Drainage bores 110 may be located at the upper and top ends of the inner tube 11. I.e., the drainage outer aperture 100 and the drainage inner aperture 110, may be located within the central vein of the patient. After the inner tube 11 is pulled out, the medical staff can observe whether thrombus exists at the drainage inner hole 110. Blood in the central vein of the patient may pass through the outer drainage aperture 100 and the inner drainage aperture 110 into the inner blood drawing tube 11. The blood collection tube 11 may transport the patient's blood to the hemodialysis machine 2 (see fig. 2 for hemodialysis machine 2).
As shown in fig. 1, the blood return inner tube 13 may be inserted into the blood return outer tube 12 or withdrawn from the blood return outer tube 12 in the longitudinal direction of the blood return outer tube 12. The inner wall of the outer blood return tube 12 and the inner and outer walls of the inner blood return tube 13 may be provided with a heparin coating to reduce the likelihood of local micro-thrombosis. The outer diameter of the inner flashback tube 13 can be less than or equal to the inner diameter of the outer flashback tube 12. The inner and outer blood return tubes 13 and 12 can be connected in a pluggable manner by way of shaft-hole fit (i.e. the inner blood return tube 13 is taken as a shaft, the inner wall of the outer blood return tube 12 surrounds the synthetic hole, and the inner blood return tube 13 is inserted into the synthetic hole formed by the inner wall of the outer blood return tube 12). Blood dialyzed back from the hemodialysis machine 2 (see fig. 2 for hemodialysis machine 2) can be delivered to the patient's central vein through the inner and outer return tubes 13, 12. The position of the blood return tube 12 remains unchanged when the blood return tube 13 is pulled out.
As shown in fig. 1, the outer blood-drawing tube 10 and the outer blood-return tube 12 may be connected by way of a common side wall. For example, the outer blood collection tube 10 and the outer blood return tube 12 may be integrally connected.
As shown in fig. 1, the flashback outer orifice 120 can be located at the upper end and top end of the flashback outer tube 12. The flashback internal bore 130 can be located at the upper and top ends of the flashback internal tube 13. I.e., the flashback outer orifice 120 and the flashback inner orifice 130 can be located in the central vein of the patient. After the flashback tube 13 is withdrawn, the healthcare worker can observe whether a thrombus is present at the flashback port 130. Blood in the flashback tube 13 can flow back into the central vein of the patient through the flashback inner bore 130 and the flashback outer bore 120.
As shown in fig. 1, the number of the drainage outer holes 100 and the drainage inner holes 110 may be plural, and each drainage outer hole 100 and each drainage inner hole 110 may be disposed in one-to-one correspondence. For example, the drainage outer aperture 100 may be coaxially disposed with the corresponding drainage inner aperture 110. The number of the outer reflow holes 120 and the inner reflow holes 130 may be plural, and each outer reflow hole 120 and each inner reflow hole 130 may be disposed in one-to-one correspondence. For example, the return outer bore 120 and the corresponding return inner bore 130 may be coaxially disposed.
As shown in fig. 1, since the inner and outer blood drawing tubes 11 and 10 are connected to be pluggable, and the inner and outer blood returning tubes 13 and 12 are connected to be pluggable. Therefore, when checking whether thrombus exists in the puncture tube 1, only the inner blood drawing tube 11 and the inner blood returning tube 13 need to be taken out to check whether thrombus exists, and the outer blood drawing tube 10 and the outer blood returning tube 12 do not need to be taken out, namely, puncture of the puncture tube 1 does not need to be carried out again after the existence of thrombus is checked, so that repeated puncture operation is avoided.
Referring to fig. 2 and 3, optionally, the blood-drawing inner tube 11 includes a first exposed section 111, and the first exposed section 111 is exposed to the blood-drawing outer tube 10. The first exposed section 111 may be connected to the hemodialysis machine 2. When the first plane A1 and the end face of the blood collection tube 10 overlap, the section of the blood collection tube 11 located outside the first plane A1 is the first exposed section 111. For example, when the first plane A1 and the left end face of the blood collection tube 10 overlap, the section of the blood collection tube 11 located on the left side of the first plane A1 is the first exposed section 111. The outer side wall of the first exposed section 111 can be matched with the inner wall of the fixed section of the blood drawing pipeline 21 of the hemodialysis machine 2, so that the first exposed section 111 is arranged to facilitate the connection of the blood drawing inner pipe 11 and the blood drawing pipeline 21 of the hemodialysis machine 2.
Referring to fig. 3 and fig. 4, optionally, the puncture tube 1 (referring to fig. 1 and the following description of the puncture tube 1) further includes a first buckle 14 and a first protrusion 15, where the first buckle 14 is disposed on the first exposed section 111, the first protrusion 15 is disposed on the blood-drawing outer tube 10, and the first buckle 14 is clamped to the first protrusion 15. The first clasp 14 may be integrally formed with the first exposed section 111. The first clasp 14 may be disposed on an outer sidewall of the first exposed section 111. The first protrusion 15 may be integrally formed with the blood drawing outer tube 10. The first protrusion 15 may have a rectangular parallelepiped shape. The first protrusion 15 may be provided on the outer side wall of the blood-drawing outer tube 10.
As shown in fig. 4, the number of the first snaps 14 and the first protrusions 15 may be each plural and provided in pairs. The plurality of first buckles 14 may be uniformly distributed with reference to the central axis of the blood drawing inner tube 11. The plurality of first projections 15 may be uniformly distributed with reference to the central axis of the blood-drawing outer tube 10.
Referring to fig. 3 and fig. 4, after the first buckle 14 is engaged with the first protrusion 15, the inner tube 11 is prevented from being separated from the outer tube 10. The more the number of pairs of first catches 14 and first projections 15, the more reliable the fixation of the inner tube 11. The first clasp 14 may include a first lateral portion 140 and a first vertical portion 141. The first transverse portion 140 is parallel to the axial direction of the blood drawing inner tube 11. The first upright 141 is parallel to the radial direction of the blood drawing inner tube 11. The first transverse portion 140 and the first vertical portion 141 may be vertically and integrally connected.
Referring to fig. 2 and 3, the right end of the first transverse portion 140 may be hooked to the first protrusion 15. The blood collection tube 10, the blood collection tube 11, the first buckle 14 and the first protrusion 15 may be made of soft materials. For example, the materials of the outer blood drawing tube 10, the inner blood drawing tube 11, the first buckle 14 and the first protrusion 15 may be polyurethane, silica gel or polyvinyl chloride PVC. The first protrusion 15 may be broken or scraped off to avoid that the first protrusion 15 obstructs the connection of the blood drawing outer tube 10 and the blood drawing tube 21 of the hemodialysis machine 2. Similarly, the first clasp 14 may also be broken or scraped off.
Referring to fig. 2 and 3, optionally, the first buckle 14 is disposed at a distance from the end surface of the first exposed section 111, and the first protrusion 15 is disposed at a distance from the end surface of the blood drawing tube 10. The first buckle 14 may be spaced apart from the left end face of the first exposed section 111. The first upright portion 141 may be disposed at the right end of the first exposed section 111 and abuts against the left end of the blood drawing outer tube 10. The first buckle 14 is arranged between the end surfaces of the first exposed section 111, so that the first buckle 14 can be prevented from obstructing the connection of the first exposed section 111 and the blood drawing tube 21 of the hemodialysis machine 2. Because if the first catch 14 is arranged flush with the end surface of the first exposed section 111, the first catch 14 will block the connection of the first exposed section 111 with the blood drawing tube 21 of the hemodialysis machine 2.
Referring to fig. 2 and 3, the first protrusion 15 may be spaced apart from the left end surface of the blood-drawing outer tube 10. The first protrusion 15 is arranged between the end surfaces of the blood drawing outer tube 10, so that the first protrusion 15 can be prevented from obstructing the connection of the blood drawing outer tube 10 and the blood drawing pipeline 21 of the hemodialysis machine 2 when the blood drawing outer tube 10 is required to be used for drawing blood.
Referring to fig. 2, 5 and 6, optionally, the blood return tube 13 includes a second exposed section 131, and the second exposed section 131 is exposed to the blood return tube 12. The second exposed section 131 may be in communication with the return channel 22 of the hemodialysis machine 2. The second exposed section 131 and the first exposed section 111 may be arranged in a V-shape so that they do not interfere with each other when connected to the hemodialysis machine 2. If the second plane A2 and the end face of the outer blood return tube 12 overlap, the section of the inner blood return tube 13 located outside the second plane A2 is the second exposed section 131.
For example, the second plane A2 may coincide with the left end face of the outer blood return tube 12, and the section of the inner blood return tube 13 located to the left of the second plane A2 is the second exposed section 131. The outer side wall of the second exposed section 131 can be matched with the inner wall of the fixed section of the blood return channel 22 of the hemodialysis machine 2, so that the second exposed section 131 is arranged to facilitate the connection of the blood return inner tube 13 and the blood return channel 22 of the hemodialysis machine 2.
Referring to fig. 1 and 5, optionally, the puncture tube 1 further includes a second buckle 16 and a second protrusion 17, the second buckle 16 is disposed on the second exposed section 131, the second protrusion 17 is disposed on the blood return outer tube 12, and the second buckle 16 is clamped to the second protrusion 17. The second clasp 16 may be integrally formed with the second exposed section 131. The second clasp 16 may be disposed on an outer sidewall of the second exposed section 131. The second protrusion 17 may be integrally formed with the blood return tube 12. The second protrusion 17 may be provided on the outer side wall of the blood return tube 12. The second protrusion 17 may have a rectangular parallelepiped shape.
Referring to fig. 5 and 6, the number of the second hooks 16 and the second protrusions 17 may be plural and arranged in pairs. The plurality of second buckles 16 may be uniformly distributed with reference to the central axis of the blood return inner tube 13. The plurality of second projections 17 may be uniformly distributed with reference to the central axis of the blood return tube 12. The second buckle 16 is clamped with the second protrusion 17, so that the back blood inner tube 13 can be prevented from being separated from the back blood outer tube 12. The more the pairs of second catches 16 and second projections 17, the more reliable the fixation of the flashback tube 13.
Referring to both fig. 2 and 5, the second clasp 16 may include a second transverse portion 160 and a second upright portion 161. The second transverse portion 160 is parallel to the axial direction of the return inner tube 13, and the second vertical portion 161 is parallel to the radial direction of the return inner tube 13. The second transverse portion 160 and the second vertical portion 161 may be vertically and integrally connected. The right end of the second transverse portion 160 may be hooked to the second protrusion 17. The outer blood return tube 12, the inner blood return tube 13, the second buckle 16 and the second protrusion 17 may be made of soft materials. For example, the materials of the outer blood return tube 12, the inner blood return tube 13, the second buckle 16 and the second protrusion 17 may be polyurethane, silica gel or polyvinyl chloride PVC. The second protrusion 17 may be broken or scraped off to avoid that the second protrusion 17 obstructs the connection of the blood return tube 12 and the blood return channel 22 of the hemodialysis machine 2. Similarly, the second clasp 16 may also be broken or scraped off.
Referring to fig. 2 and 5, optionally, a second buckle 16 is disposed between the second buckle 16 and the end surface of the second exposed section 131, and a second protrusion 17 is disposed between the second buckle and the end surface of the blood return tube 12. The second buckle 16 may be spaced apart from the left end face of the second exposed section 131. The second upright portion 161 may be disposed at the right end of the second exposed section 131 and abuts the left end of the blood return outer tube 12. The second fastener 16 is arranged between the end surfaces of the second exposed section 131, so that the second fastener 16 can be prevented from obstructing the connection between the second exposed section 131 and the blood return channel 22 of the hemodialysis machine 2. Because if the end surfaces of the second clasp 16 and the second exposed section 131 are arranged flush, the second clasp 16 will block the connection of the second exposed section 131 and the return channel 22 of the hemodialysis machine 2.
Referring to fig. 2 and 5, the second protrusion 17 may be spaced apart from the left end surface of the blood return tube 12. The second protrusion 17 is arranged between the end face of the blood return outer tube 12, so that the second protrusion 17 can be prevented from obstructing the connection of the blood return outer tube 12 and the blood return channel 22 of the hemodialysis machine 2 when the blood return outer tube 12 is required to be used for conveying blood return.
Referring to fig. 3-6 together, alternatively, the first clasp 14 includes a first handle portion 142 and the second clasp 16 includes a second handle portion 162. The first handle portion 142 and the second handle portion 162 may be cross-shaped. The first handle portion 142 may be located above the first lateral portion 140. The second handle portion 162 may be located above the second cross portion 160. The healthcare worker can pinch the first handle portion 142 to unlock the first clasp 14 and pinch the second handle portion 162 to unlock the second clasp 16, thereby facilitating unlocking of the first clasp 14 and the second clasp 16 without the aid of tools.
As shown in fig. 1, the outer wall of the inner blood drawing tube 11 is optionally tangential to the inner wall of the outer blood drawing tube 10. The outer top wall of the inner blood drawing tube 11 may be tangential to the inner top wall of the outer blood drawing tube 10. The outer side wall of the inner blood drawing tube 11 may be tangential to the inner side wall of the outer blood drawing tube 10. The outer wall of the blood drawing inner tube 11 is tangent to the inner wall of the blood drawing outer tube 10, so that the blood drawing inner tube 11 and the blood drawing outer tube 10 can be tightly attached, a gap is prevented from being generated between the blood drawing inner tube 11 and the blood drawing outer tube 10, and further, blood is prevented from generating vortex or stagnation in the gap between the blood drawing inner tube 11 and the blood drawing outer tube 10.
As shown in fig. 1, optionally, the outer wall of the inner back blood tube 13 is tangential to the inner wall of the outer back blood tube 12. The outer top wall of the inner blood return tube 13 may be tangent to the inner top wall of the outer blood return tube 12, and the outer side wall of the inner blood return tube 13 may be tangent to the inner side wall of the outer blood return tube 12. The outer wall of the blood return inner tube 13 is tangent to the inner wall of the blood return outer tube 12, so that the blood return inner tube 13 and the blood return outer tube 12 can be closely attached, a gap is avoided between the blood return inner tube 13 and the blood return outer tube 12, and further, the risk that local thrombus is increased due to vortex or retention of blood in the gap between the blood return inner tube 13 and the blood return outer tube 12 is prevented.
As shown in fig. 1, when checking whether there is a thrombus in the inner tube 11, the first buckle 14 may be released first, the outer tube 10 may be held in place in the central vein, and then the first exposed section 111 may be pinched to withdraw the inner tube 11 from the outer tube 10. After the inner tube 11 is pulled out, the outer tube 10 can be used continuously, thus completing the examination of whether thrombus exists in the inner tube 11, and without re-puncturing the outer tube 10. The blood drawing outer tube 10 is sleeved on the blood drawing inner tube 11, namely the blood drawing outer tube 10 can be used as a backup of the blood drawing inner tube 11, and the blood drawing outer tube 10 can be continuously used after the waste blood drawing inner tube 11 is not pulled out.
Similarly, as shown in fig. 1, when checking whether there is a thrombus in the inner blood return tube 13, the second buckle 16 may be released first, the outer blood return tube 12 is held in place in the central vein, and then the second exposed section 131 is pinched to withdraw the inner blood return tube 13 from the outer blood return tube 12. After the back blood inner tube 13 is pulled out, the back blood outer tube 12 can still be used continuously, so that the examination of whether thrombus exists in the back blood inner tube 13 is finished, and meanwhile, the back blood outer tube 12 does not need to be punctured again. The blood return outer tube 12 is sleeved on the blood return inner tube 13, namely the blood return outer tube 12 can be used as a backup of the blood return inner tube 13, and the blood return outer tube 12 can be continuously used after the blood return inner tube 13 is not required to be pulled out. For the single needle double lumen version of the aspiration tube 1, both the inner blood drawing tube 11 and the inner blood return tube 13 typically need to be withdrawn for examination.
Second embodiment
Referring to fig. 1, 2 and 7 together, in the present embodiment, there is provided a thrombus inspection method using a hemodialysis machine 2 and a puncture tube 1 of the first embodiment, the hemodialysis machine 2 being connected to a blood drawing inner tube 11, the hemodialysis machine 2 being connected to a blood returning inner tube 13, comprising the steps of:
S1: when the hemodialysis machine 2 generates an over-pressure alarm signal of the inner tube of the blood drawing, the inner tube of the blood drawing 11 is pulled out and whether thrombus exists in the inner tube of the blood drawing 11 is judged; the pressure over-value alarm signal of the blood drawing inner tube can be sound signals with different frequencies and/or image prompt signals with different colors on the display screen of the hemodialysis machine 2. For example, the red-colored level image is the most urgent alarm signal that must be immediately processed, otherwise the blood pump of the hemodialysis machine 2 may be shut down at any time. The yellow level image is a general level alarm signal, and can be observed first. When the medical staff senses the pressure over-value alarm signal of the inner tube, the first buckle 14 can be released and the inner tube 11 can be pulled out to observe whether thrombus exists in the inner tube 11.
S2: when the hemodialysis machine 2 generates an alarm signal of the pressure of the blood return inner tube exceeding the preset pressure, the blood return inner tube 13 is pulled out and whether thrombus exists in the blood return inner tube 13 is judged. The blood return inner tube pressure over-value alarm signal can be different frequency sound signals and/or different color image prompt signals on the display screen of the hemodialysis machine 2. For example, the red-colored level image is the most urgent alarm signal that must be immediately processed, otherwise the blood pump of the hemodialysis machine 2 may be shut down at any time. The yellow level image is a general level alarm signal, and can be observed first. When the medical staff senses the pressure over-value alarm signal of the blood return inner tube, the second buckle 16 can be unlocked and the blood return inner tube 13 can be pulled out to observe whether thrombus exists in the blood return inner tube 13.
The hemodialysis machine 2 is a hemodialysis machine. The hemodialysis machine 2 includes two parts, a monitoring alarm system and a dialysate supply system. The monitoring alarm system comprises a blood pump, arterial pressure monitoring, air monitoring and the like. The monitoring alarm system of the hemodialysis machine 2 is communicated with the blood drawing inner tube 11 and the blood returning inner tube 13, and can monitor the blood pressure in the blood drawing inner tube 11 and the blood pressure in the blood returning inner tube 13.
The monitoring alarm system generates an over-pressure alarm signal when the pressure of the inner tube 11 is lower than normal (e.g., when the pressure of the inner tube 11 is extremely negative-250 mmHg) or the withdrawal is not smooth. The monitoring alarm system of the hemodialysis machine 2 generates an over-pressure warning signal for the back-blood tube when the pressure of the back-blood tube 13 exceeds a normal value (e.g., when the pressure of the back-blood tube 13 is 300 mmHg) or the back-suction is not smooth.
The puncture tube and the thrombus inspection method provided by the embodiments of the present application are described in detail above, and those skilled in the art will vary in specific implementation and application scope according to the ideas of the embodiments of the present application. In view of the foregoing, it is intended that the present application not be limited to the above description, but that all equivalent modifications and variations according to the spirit and technical idea of the present application be covered by the appended claims.
Claims (10)
1. A puncture tube, comprising:
an outer blood drawing tube comprising an outer drainage aperture;
The blood drawing inner tube is connected with the blood drawing outer tube in a pluggable manner, the blood drawing inner tube is arranged in the blood drawing outer tube, the blood drawing inner tube comprises a drainage inner hole, the drainage outer hole is communicated with the drainage inner hole, and the drainage outer hole and the drainage inner hole are used for introducing blood in a central vein;
a blood return outer tube comprising a return outer bore, the blood return outer tube being connected to the blood drawing outer tube; and
The blood return inner tube is connected with the blood return outer tube in a pluggable manner, the blood return inner tube is arranged in the blood return outer tube, the blood return outer tube comprises a backflow inner hole, the backflow outer hole is communicated with the backflow inner hole, and the backflow outer hole is used for back transfusion of blood into a central vein.
2. The lance of claim 1 wherein the inner blood-drawing tube comprises a first exposed section that is exposed to the outer blood-drawing tube.
3. The lance of claim 2 further comprising a first catch and a first projection, the first catch disposed on the first exposed section, the first projection disposed on the outer blood-drawing tube, the first catch snap-fit to the first projection.
4. The lance of claim 3 wherein the first clasp is disposed between the first clasp and the end face of the first exposed section and the first projection is disposed between the end face of the blood drawing outer tube.
5. The lance of claim 1 wherein the inner return tube comprises a second exposed section that is exposed to the outer return tube.
6. The lance of claim 5 further comprising a second catch and a second projection, the second catch disposed on the second exposed section, the second projection disposed on the blood return tube, the second catch snap-fit to the second projection.
7. The lance of claim 6 wherein the second clasp is disposed between the second clasp and the end face of the second exposed section and the second projection is disposed between the end face of the blood return tube.
8. The lance of claim 1 wherein the outer wall of the inner lance is tangential to the inner wall of the outer lance.
9. The lance tube of claim 1 wherein the outer wall of the inner return tube is tangential to the inner wall of the outer return tube.
10. A thrombus testing method using a hemodialysis machine and the puncture tube of claim 1, said hemodialysis machine being connected to said blood drawing inner tube, said hemodialysis machine being connected to said blood return inner tube, comprising the steps of:
when the hemodialysis machine generates an alarm signal of the pressure exceeding value of the inner tube of the blood drawing, the inner tube of the blood drawing is pulled out, and whether thrombus exists in the inner tube of the blood drawing is judged; and
When the hemodialysis machine generates an alarm signal of the pressure exceeding value of the blood return inner tube, the blood return inner tube is pulled out, and whether thrombus exists in the blood return inner tube is judged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410535421.8A CN118383844B (en) | 2024-04-30 | 2024-04-30 | Puncture tube and thrombus inspection method |
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| CN202410535421.8A CN118383844B (en) | 2024-04-30 | 2024-04-30 | Puncture tube and thrombus inspection method |
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| CN118383844A true CN118383844A (en) | 2024-07-26 |
| CN118383844B CN118383844B (en) | 2024-10-22 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN118383844B (en) | 2024-10-22 |
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