CN220069824U - Blood vessel puncture blood pressure monitoring device - Google Patents
Blood vessel puncture blood pressure monitoring device Download PDFInfo
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- CN220069824U CN220069824U CN202321369325.8U CN202321369325U CN220069824U CN 220069824 U CN220069824 U CN 220069824U CN 202321369325 U CN202321369325 U CN 202321369325U CN 220069824 U CN220069824 U CN 220069824U
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- blood
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- tube
- monitoring device
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- 230000036772 blood pressure Effects 0.000 title claims abstract description 33
- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 31
- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 210000004369 blood Anatomy 0.000 claims abstract description 52
- 239000008280 blood Substances 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000002792 vascular Effects 0.000 claims description 12
- 230000013011 mating Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 210000003462 vein Anatomy 0.000 description 7
- 210000001367 artery Anatomy 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 230000004872 arterial blood pressure Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 210000003191 femoral vein Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000002321 radial artery Anatomy 0.000 description 1
Abstract
The utility model discloses a blood vessel puncture blood pressure force monitoring device which comprises a first through pipe, a locking joint seat, a second through pipe and a balance cavity, wherein the balance cavity is communicated with the second through pipe and is sealed at the joint, the second through pipe and the first through pipe are respectively connected to the two ends of the locking joint seat and are communicated in a penetrating way, the locking joint seat is used for being connected with a puncture needle seat of a puncture needle in a matching way, and the first through pipe is positioned at one end of the locking joint seat, which is connected with the puncture needle seat, so as to contact blood to form a liquid seal. When the needle point penetrates into a blood vessel, blood can quickly flow upwards along the first through pipe to enter the second through pipe under the action of blood pressure, air in the balance cavity at the upper end of the second through pipe can be gradually compressed in the upward flowing process of the blood, and when the pressure of the balance cavity is equal to the blood pressure, the blood stops flowing, the position of the needle point can be judged, the artificial influence factors are removed, the operation is simple, and the cost is low.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a blood vessel puncture blood pressure monitoring device.
Background
Vascular puncture is a common clinical operation, and aims to perform medical operations such as blood drawing, assaying, blood transfusion, angiography and the like by placing a catheter, and also can perform interventional treatment. Common vascular punctures include noble venipuncture, cephalic vein puncture, brachial vein puncture, femoral artery puncture, femoral vein puncture, subclavian arteriovenous puncture, and radial artery puncture. The position of the needle point can be judged rapidly, simply, conveniently and economically clinically, the damage to blood vessels possibly caused by repeated puncture can be avoided, and the pain and the economic pressure of patients are greatly relieved.
However, in the existing clinical blood vessel puncture process, whether the needle tip enters the blood vessel or not and whether the blood vessel enters is a venous blood vessel or an arterial blood vessel are judged, and the two methods of experience judgment and ultrasonic positioning puncture are mainly adopted. The ultrasonic positioning puncture has high cost due to expensive equipment, is complex to operate and is difficult to popularize; the experience judgment depends on abundant knowledge and experience of medical staff, and is easy to misjudge for new nurses, so that repeated puncture is needed, and the pain of patients is aggravated. In addition, there is also a device for monitoring and positioning by blood return pressure, which can judge whether the puncture enters a blood vessel and whether the blood vessel enters a vein or an artery by accurately monitoring the blood return pressure. However, the existing device has a complex structure and complex operation, can cause overlong puncture time, and easily causes the psychological and physiological pain increase of patients.
Disclosure of Invention
In order to overcome at least one of the above-mentioned drawbacks of the prior art, the present utility model provides a vascular puncture blood pressure monitoring device.
The utility model adopts the technical proposal for solving the problems that:
the utility model provides a blood vessel puncture returns blood pressure monitoring devices, includes first siphunculus, locking joint seat, second siphunculus and balanced cavity, balanced cavity with second siphunculus intercommunication and junction are sealed, the second siphunculus with first siphunculus connect respectively in locking joint seat's both ends and run through the intercommunication, locking joint seat is used for the puncture needle seat of mating connection pjncture needle, first siphunculus is located locking joint seat is connected with the one end of puncture needle seat forms the liquid seal with contact blood.
According to the blood vessel puncture blood pressure monitoring device provided by the utility model, when the needle tip penetrates into a blood vessel, blood can quickly flow upwards along the first through pipe to enter the second through pipe due to the action of blood pressure, air in the balance cavity at the upper end of the second through pipe can be gradually compressed in the upward flowing process of the blood, when the pressure of the balance cavity is equal to the blood pressure, the blood stops flowing, medical staff can judge whether the blood vessel is punctured or not and whether the blood enters a vein or an artery is detected through the position of the blood, the influence of human factors in the puncturing process is solved, expensive equipment is not needed, the puncturing method is completely consistent with the conventional puncturing method, no special skill requirement is required for the medical staff, and the medical staff only needs to be simply trained to identify the meaning corresponding to each scale.
Further, the outer diameter of the first tube is smaller than the inner diameter of the puncture needle tube of the puncture needle.
Further, the distance between the tail end of the first through pipe and the needle point of the puncture needle tube is larger than 1mm.
Further, the inner diameter of the first through pipe is smaller than the inner diameter of the second through pipe.
Further, the second through-hole is a transparent member.
Further, a blood return position mark is arranged on the outer surface of the second through pipe.
Further, the blood return position marks are scale marks 0 scale, 1 scale and 2 scale.
Further, the volume of the balance cavity is larger than the volume of the second through pipe.
Further, a first luer connector is arranged on the puncture needle seat, and a second luer connector is arranged on the locking connector seat.
Further, the volume of the balancing cavity is not variable.
In summary, the vascular puncture blood pressure monitoring device of the utility model has the following technical effects:
when the needle tip penetrates into a blood vessel, blood can quickly flow upwards along the first through pipe to enter the second through pipe due to the action of blood pressure, air in the balance cavity at the upper end of the second through pipe can be gradually compressed in the upward flowing process of the blood, when the pressure of the balance cavity is equal to the blood pressure, the blood stops flowing, medical staff can judge whether to puncture into the blood vessel or not and whether to enter veins or arteries according to the position of the blood, the influence of human factors in the puncture process is solved, expensive equipment is not needed, the puncture method is completely consistent with the conventional puncture method, no special skill requirement is required for the medical staff, the medical staff only needs to be simply trained, and the medical staff can recognize the meaning corresponding to each scale.
Other technical effects of the utility model are pointed out in the specification in connection with specific structures.
Drawings
FIG. 1 is a schematic diagram of a blood vessel puncture blood pressure monitoring device according to the present utility model;
fig. 2 is a schematic cross-sectional view of the blood vessel puncture blood pressure monitoring device of the present utility model.
Wherein, the meaning of the reference signs indicates:
1. puncture needle tube; 2. a puncture needle stand; 3. a first through pipe; 4. locking the joint seat; 5. a second through pipe; 6. a balancing cavity; 7. and (5) marking a blood return position.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Referring to fig. 1-2, the utility model provides a blood vessel puncture blood pressure monitoring device, which comprises a first through pipe 3, a locking joint seat 4, a second through pipe 5 and a balance cavity 6, wherein the balance cavity 6 is communicated with the second through pipe 5, the joint is sealed, the second through pipe 5 and the first through pipe 3 are respectively connected with two ends of the locking joint seat 4 and are communicated in a penetrating way, the locking joint seat 4 is used for being matched with a puncture needle seat 2 of a puncture needle, the first through pipe 3 is positioned at one end of the locking joint seat 4, which is connected with the puncture needle seat 2, so as to be in contact with blood to form a liquid seal. When the needle tip penetrates into a blood vessel, blood can quickly flow upwards along the first through pipe 3 to enter the second through pipe 5 due to the action of blood pressure, air in the balance cavity 6 at the upper end of the second through pipe 5 can be gradually compressed in the upward flowing process of the blood, when the pressure of the balance cavity 6 is equal to the pressure of the blood pressure, the blood stops flowing, medical staff can judge whether the blood enters the blood vessel and whether the blood enters a vein or an artery through the position of the blood, the influence of human factors in the puncturing process is solved, expensive equipment is not needed, the puncturing method is completely consistent with the conventional puncturing method, no special skill requirement is required for the medical staff, and the medical staff only needs to be trained simply to recognize the meaning corresponding to each scale.
The puncture needle comprises a puncture needle tube 1 and a puncture needle seat 2, and the puncture needle seat 2 is connected with and fixed with the puncture needle tube 1. The puncture needle is a generic term for a needle used for performing a puncture operation in a medical operation.
Specifically, the outer diameter of the first tube 3 is smaller than the inner diameter of the puncture needle tube 1 so as to return blood. The distance between the tail end of the first through pipe 3 and the needle point of the puncture needle tube 1 is larger than 1mm, so that the influence caused by that a small amount of blood of a capillary vessel directly enters the first through pipe 3 in the puncture process is avoided.
As a preferred embodiment, the inner diameter of the first tube 3 is smaller than the inner diameter of the second tube 5 to ensure that the blood forms a liquid seal, compressing air.
As a preferred embodiment, the second through tube 5 is a transparent member, which is convenient to observe, and the outer surface of the second through tube 5 is provided with a blood return position mark 7. The blood return position mark 7 is a scale mark 0 scale, a scale mark 1 scale and a scale mark 2 scale, wherein 0-1 is designed as a venous pressure interval, and the blood return position mark is larger than 2 as an arterial pressure interval.
As a preferred embodiment, the volume of the balancing cavity 6 is larger than the volume of the second through pipe 5, so that the blood pressure can compress the gas in the second through pipe 5 to the balancing cavity 6, and the blood can flow into the second through pipe 5.
As a preferred embodiment, the puncture needle stand 2 is provided with a first luer interface, the locking connector stand 4 is provided with a second luer interface, so that the connection can be better matched, and the luer interface is also a common interface of a medical needle, so that the puncture needle stand has good adaptability.
As a preferred embodiment, the volume of the balancing cavity 6 is not variable to ensure accurate display after penetration.
Working principle: after the device is assembled, puncture is carried out, when the needle tip enters a blood vessel, blood enters the first through tube 3 along the puncture needle tube 1 and flows to the second through tube 5 under the action of blood pressure, because the upper end of the second through tube 5 is in a closed state, the blood can compress air in the inner cavity of the upper end of the second through tube 5 to the balance cavity 6, when the air pressure of the balance cavity 6 is balanced with the pressure of the blood, the blood stops flowing upwards, when the needle tip exits from the blood vessel, the pressure of the balance cavity 6 can enable the blood in the second through tube 5 to flow to the first through tube 3, the change condition of the needle tip position can be judged through the blood return position mark 7, wherein a scale mark below 0 is that the needle tip does not enter the blood vessel (the blood pressure is below 0.5 Kpa), a scale mark between 0 and 1 is that the needle tip is in a venous blood vessel (the blood pressure is between 0.5Kpa and 2 Kpa), and a scale mark above 2 is that the needle tip is in an arterial vessel (the blood pressure is above 5 Kpa). The user can determine whether the blood vessel is penetrated or not and whether the artery or vein is penetrated or not by observing the section where the blood is positioned in the second through tube 5. After the puncture is completed, the locking joint seat 4 can be separated from the puncture needle seat 2 for withdrawal so that the puncture needle can complete subsequent operation.
Wherein, assume that: the relative pressure of venous blood with 0 scale is P0 (0.5 Kpa), the relative pressure of venous blood with 1 scale is P1 (2 Kpa), the relative pressure of arterial blood with 2 scale is P2 (5 Kpa), and the atmospheric pressure is P3 (101 Kpa); the total volume of the first through pipe 3, the second through pipe 5 and the balance cavity 6 is V3, the volume from the tail end of the first through pipe 3 to the scale of 0 is V0, the volume from the tail end of the first through pipe 3 to the scale of 1 is V1, and the volume from the tail end of the first through pipe 3 to the scale of 2 is V2. According to the ideal gas state equation pv=nrt, P gas pressure, V gas volume, n gas mass, R is the gas constant and T is the gas temperature. The proportional relationship of V0, V1, V2 and V3 can be calculated.
When the gas in the balancing cavity 6 is compressed and balanced and the blood is on the 0 scale:
P3*V3＝(P0+P3)*(V3-V0)
P3/(P0+P3)＝(V3-V0)/V3＝0.9951，V0/V3＝0.0049
when the gas in the balance cavity 6 is compressed and balanced, the blood is on the scale of 1:
P3*V3＝(P1+P3)*(V3-V1)
P3/(P1+P3)＝(V3-V1)/V3＝0.9806，V1/V3＝0.0194
when the gas in the balancing cavity 6 is compressed and balanced, the blood is on the scale of 2:
P3*V3＝(P2+P3)*(V3-V2)
P3/(P2+P3)＝(V3-V2)/V3＝0.9528，V2/V3＝0.0472
the positions of the 0 scale, the 1 scale and the 2 scale and the volume required by V3 can be further calculated according to the sizes of the first through pipe 3 and the second through pipe 5.
If the radius r of the first through pipe 3 is 0.015cm, the length from the tip to the 0 scale is 12cm, the 0 scale position is the demarcation point of the first through pipe 3 and the second through pipe 5, v0=0.008478 ml, v3= 1.721033ml can be calculated,
v1= 0.033388ml, and the inner diameter of the second through pipe 5 from 0 scale to 1 scale is 0.2cm, the distance from 0 scale to 1 scale is 7.93mm.
V2= 0.0812327ml, and the inner diameter of the second through pipe 5 with 0 scale to 2 scale is 0.2cm, the distance from 1 scale to 2 scale is 15.23mm.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. Blood vessel puncture returns blood pressure monitoring devices, a serial communication port, including first siphunculus (3), locking joint seat (4), second through-tube (5) and balanced cavity (6), balanced cavity (6) with second through-tube (5) intercommunication and junction are sealed, second through-tube (5) with first siphunculus (3) connect respectively in the both ends and the run through intercommunication of locking joint seat (4), locking joint seat is used for the puncture needle file (2) of mating connection pjncture needle, first siphunculus (3) are located locking joint seat (4) are connected with the one end of puncture needle file (2) forms the liquid seal with contact blood.
2. The vascular puncture blood pressure monitoring device according to claim 1, wherein the outer diameter of the first tube (3) is smaller than the inner diameter of the puncture needle tube (1) of the puncture needle.
3. The vascular puncture blood pressure monitoring device according to claim 2, wherein the distance between the end of the first tube (3) and the tip of the puncture needle tube (1) is larger than 1mm.
4. A vascular puncture blood pressure monitoring device according to any of the claims 1-3, characterized in that the inner diameter of the first tube (3) is smaller than the inner diameter of the second tube (5).
5. Vascular puncture blood pressure monitoring device according to claim 4, characterized in that the second tube (5) is a transparent piece.
6. The vascular puncture blood return pressure monitoring device according to claim 5, wherein a blood return position mark (7) is arranged on the outer surface of the second through tube (5).
7. The vascular puncture blood pressure monitoring device according to claim 6, wherein the blood return position marks (7) are a scale mark 0 scale, a scale mark 1 scale and a scale mark 2 scale.
8. The vascular puncture blood pressure monitoring device according to claim 6 or 7, characterized in that the volume of the balancing cavity (6) is larger than the volume of the second through tube (5).
9. The blood vessel puncture blood pressure monitoring device according to claim 8, wherein the puncture needle seat (2) is provided with a first luer interface, and the locking connector seat (4) is provided with a second luer interface.
10. Vascular puncture blood pressure monitoring device according to claim 1 or 9, characterized in that the volume of the balancing cavity (6) is not variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321369325.8U CN220069824U (en) | 2023-05-31 | 2023-05-31 | Blood vessel puncture blood pressure monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321369325.8U CN220069824U (en) | 2023-05-31 | 2023-05-31 | Blood vessel puncture blood pressure monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220069824U true CN220069824U (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321369325.8U Active CN220069824U (en) | 2023-05-31 | 2023-05-31 | Blood vessel puncture blood pressure monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN220069824U (en) |
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- 2023-05-31 CN CN202321369325.8U patent/CN220069824U/en active Active
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