CN211724249U - Remaining needle with pressure measuring function - Google Patents
Remaining needle with pressure measuring function Download PDFInfo
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- CN211724249U CN211724249U CN202020134853.5U CN202020134853U CN211724249U CN 211724249 U CN211724249 U CN 211724249U CN 202020134853 U CN202020134853 U CN 202020134853U CN 211724249 U CN211724249 U CN 211724249U
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- pressure
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Abstract
The utility model discloses an indwelling needle with pressure measuring function, which comprises a needle head, a hose and a transfusion tube connector which are communicated in sequence, wherein the transfusion tube connector is provided with an auxiliary tube, a transfusion tube and a pressure measuring tube which extend along different directions; the auxiliary tube is used for adding medicines; the infusion tube is used for connecting an infusion apparatus; the piezometric tube is used for testing puncture pressure. The utility model discloses an it has the pressure measurement function to keep somewhere the needle, can be through the pressure variation scope of puncture in-process pressure-measuring pipe, and whether accurate judgement is punctured successfully reduces patient's misery effectively and promotes medical personnel's work efficiency.
Description
Technical Field
The utility model belongs to the medical equipment field, concretely relates to area pressure measurement function keep somewhere needle.
Background
In clinical medical treatment at present, in order to reduce the pain of repeated puncture of a patient and the vascular injury caused by the repeated puncture, a vein indwelling needle is widely applied. When the existing vein indwelling needle is used for puncture operation, medical staff can only judge whether a target blood vessel enters or not through experience, whether puncture is successful or not is usually determined by the fact that whether a puncture person has a falling empty feeling or not and whether blood returns after the puncture person enters the blood vessel or not through the judgment process, but in actual clinical practice, the puncture person cannot accurately judge that the indwelling needle enters the blood vessel in time due to insufficient experience of the puncture person or personal physique difference, the blood vessel is punctured in the process of continuously propelling the indwelling needle, puncture failure is caused, unnecessary pain is brought to the patient by the puncture operation again, and after the puncture failure, the situation of repeated operation for many times can exist due to psychological quality reasons of the medical staff.
In addition, during the indwelling period of the indwelling needle, affected by the movement and blood coagulation of the patient, the indwelling needle is often in abnormal position, blocked and other adverse conditions, medical staff also observes whether the infusion is smooth, whether blood returns from the back suction, whether swelling exists on the part and the like according to experience to identify the usability of the indwelling needle, and if the judgment is wrong, the blind infusion may cause serious consequences such as pain, local swelling, thrombus falling and the like to the patient.
Therefore, the invention provides the indwelling needle which can assist medical care personnel to judge whether puncture is successful or not, so that the pain of a patient can be relieved, the blood vessel of the patient can be prevented from being damaged, the efficiency of the medical care personnel can be improved, and the doctor-patient relationship can be relieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the shortcoming that the current needle puncture of keeping somewhere successfully needs medical experience to judge, easily appears judging the mistake, provided a take pressure measurement function keep somewhere the needle.
The utility model adopts the following technical scheme:
the utility model provides a take remaining needle of pressure measurement function which the key lies in: the infusion device comprises a needle head, a hose and an infusion tube connector which are sequentially communicated, wherein auxiliary tubes, infusion tubes and pressure measuring tubes which extend in different directions are arranged on the infusion tube connector;
the auxiliary tube is used for adding medicines;
the infusion tube is used for connecting an infusion apparatus;
the piezometric tube is used for testing puncture pressure.
The effect of this scheme is: medical personnel can accurately judge whether the puncture is successful or not through the pressure variation range of the piezometer tube in the puncture process, effectively reduce the pain of patients and improve the working efficiency of the medical personnel.
As the preferred scheme, the inner of auxiliary tube, transfer line and pressure-measuring pipe all with transfer line connector inner chamber intercommunication, the mouth of pipe threaded connection of auxiliary tube has sealed cap, the mouth of pipe of transfer line is equipped with sealing joint, the pressure-measuring pipe is outer end confined blind pipe. The effect of this scheme is: the pressure measuring pipe is a blind pipe with the outer end closed, and the pressure is measured by utilizing the Boyle's law.
As a preferred scheme, the infusion tube connector is close to the piezometer tube is provided with a pressing bubble, the pressing bubble and the infusion tube connector are integrally formed, and a cavity of the pressing bubble is communicated with an inner cavity of the infusion tube connector. The effect of this scheme is: after the indwelling needle is left, medical personnel can conveniently judge whether the indwelling needle has the conditions of ectopic position or blockage and the like by pressing the bubble.
As an optimal scheme, the pipe diameter of the pressure measuring pipe is smaller than the pipe diameters of the auxiliary pipe and the infusion pipe, and the pipe diameter of the pressure measuring pipe is larger than the pipe diameter of the needle head. The effect of this scheme is: the pipe diameter of the pressure-measuring pipe is small, so that liquid flowing into the infusion apparatus under normal conditions can be prevented from entering the pressure-measuring pipe, and normal use of the pressure-measuring pipe is guaranteed.
As a preferred scheme, the piezometric tube is a transparent pipeline, the wall of the piezometric tube is provided with pressure scale lines, and the unit of the pressure scale lines is cmH20. The effect of this scheme is: the blood vessel pressures at different parts are different, and medical personnel can accurately judge whether the target blood vessel is successfully punctured or not through the pressure displayed by the pressure scale marks.
Preferably, the length of the piezometric tube is larger than the lengths of the auxiliary tube and the infusion tube. The effect of this scheme is: the sensitivity of the pressure measuring pipe can be ensured by the longer length of the pressure measuring pipe.
Has the advantages that: the utility model discloses a take needle of keeping somewhere of pressure measurement function has simple structure, low cost, convenient operation, the accurate characteristics of pressure measurement, and medical personnel can pass through the pressure variation scope of puncture in-process pressure-measuring pipe, and whether accurate judgement is punctured successfully reduces patient's misery effectively and promotes medical personnel's work efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the pressure measuring tube 33.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings:
example (b):
as shown in fig. 1 and 2, an indwelling needle with a pressure measuring function comprises a needle head 1, a hose 2 and a transfusion tube connector 3 which are sequentially communicated, wherein the transfusion tube connector 3 is provided with an auxiliary tube 31, a transfusion tube 32 and a pressure measuring tube 33 which extend along different directions, wherein the auxiliary tube 31 is used for adding medicines; the infusion tube 32 is used for connecting an infusion set; the piezometric tube 33 is used to test the puncture pressure.
During specific implementation, the inner ends of the auxiliary tube 31, the infusion tube 32 and the pressure measuring tube 33 are communicated with the inner cavity of the infusion tube connector 3, the pipe orifice of the auxiliary tube 31 is in threaded connection with the sealing cap 4, the pipe orifice of the infusion tube 32 is provided with the sealing connector 5, and the pressure measuring tube 33 is a blind tube with the outer end sealed.
In order to conveniently judge whether the indwelling needle is in an abnormal position or blocked after indwelling, a pressing bubble 6 is arranged on the infusion tube connector 3 close to the pressure measuring tube 33, the pressing bubble 6 and the infusion tube connector 3 are integrally formed, the cavity of the pressing bubble 6 is communicated with the inner cavity of the infusion tube connector 3, the pressing bubble 6 is made of a non-elastic film material, and when the positive pressure is applied, the pressing bubble 6 is in a naturally bulged state; when subjected to negative pressure, will collapse to some extent.
In order to ensure accurate pressure measurement, the pipe diameter of the pressure measuring pipe 33 is smaller than the pipe diameters of the auxiliary pipe 31 and the infusion tube 32, the pipe diameter of the pressure measuring pipe 33 is larger than the pipe diameter of the needle 1, the length of the pressure measuring pipe 33 is larger than the lengths of the auxiliary pipe 31 and the infusion tube 32, the pressure measuring pipe 33 is a flexible pipe made of transparent materials, pressure scale marks are arranged on the pipe wall of the flexible pipe, and the pressure scale marks are used for measuring the pressureThe unit of the degree line is cmH20。
The utility model discloses a pressure measurement principle:
the pressure measuring tube 33 is a slender hollow hose with a length of 20cm, one end of the pressure measuring tube is communicated with the inner cavity of the infusion tube connector 3, and the other end of the pressure measuring tube is a blind end. During the process of performing the vascular puncture or indwelling, according to the clinical operation routine, the infusion tube connector 3 needs to be filled with liquid to prevent air from inputting into the blood vessel, and the liquid is not easy to enter because the diameter of the pressure measuring tube 33 is small, so that when the pressure is not applied, the liquid level is positioned at the initial part of the pressure measuring tube 33, namely 0cmH20, when the puncture needle enters a blood vessel, transfusions or squeezes the pressing bubble 6, the gas in the pressure measuring tube 33 is pressurized to reduce the volume and move the liquid level, thereby displaying the pressure in the connecting tube.
According to Boyle's law: in the case of a constant temperature and quantity of ideal gas, the volume V of the ideal gas is inversely proportional to the pressure P of the ideal gas, i.e. PAVA＝PBVB(A represents a state in which the pressure is not applied before the puncture, and B represents a state in which the pressure is applied after the puncture), before the puncture is started, the starting pressure measurement point "0" cmH of the pressure measurement tube 33 is set2O is 1 standard atmosphere, and the cross section of the piezometric tube is assumed to be S. I.e. PA1033.9cmH (1 standard atmospheric pressure)2O，VA＝S*20cm。
After the puncture into the blood vessel, the piezometric tube 33 is subjected to the venous pressure (P) when lying downB) The gas is compressed and the liquid surface moves, assuming that the distance of movement is Δ h. P at this timeB＝PA+ venous pressure (1033.9+20) cmH2O, using the formula (P)AVA＝PBVB) It can be derived that: 1033.9 ═ S20 ═ S (1033.9+20) × (20- Δ h), and Δ h is 0.4cm, that is, the liquid surface moves by 0.4cm, and therefore, the scale for determining that the liquid surface movement distance of the liquid-gas pressure measuring tube is 0.4cm indicates that the pressure in the connecting tube is 20cmH 2O.
Similarly, the pressure values corresponding to other scales can be calculated sequentially, and the longer the piezometric tube 33 is, the higher the sensitivity is. We assume that the effective length of the tube is only 2cm in the current pressure measurement range. To increase patient comfort and maneuverability, the remaining 18cm tube length can be "hidden" in a spiral or other effective manner. Therefore, the utility model discloses well piezometric tube 33 can design specific length and scale according to concrete needs through boyle's law.
Use the utility model discloses generally include two kinds of situations:
first, a puncturing stage
The liquid is pre-filled in the infusion tube connector 3, so that gas is prevented from entering the blood vessel during puncture. During the puncture process, an operator can observe whether the needle head 1 enters a blood vessel lacuna through the piezometric tube 33, when the front end of the needle head 1 does not puncture into the blood vessel, the piezometric tube pressure is 0, the liquid level is at the initial part of the liquid-gas piezometric tube, the puncture posture, angle and depth are adjusted immediately, when the front end of the needle head 1 punctures into the blood vessel, a certain pressure is generated, and the liquid surface of the liquid-gas piezometric tube moves towards the blind end. At this time, the venous pressure is displayed, and the operator can determine whether the pressure value displayed by the piezometric tube 33 is within the normal pressure range of the puncture site, for example, the normal operator can try to implant the cannula into the blood vessel. In addition, the pressing bulb 6 can be squeezed to observe whether blood returns or not and whether the pressure display is abnormal or not to assist in judging whether the puncture is successful or not.
Second, after the puncture is completed and during the remaining period
During the indwelling needle indwelling period, the usability of the indwelling needle is judged by pressing the pressing bulb 6 to observe the presence or absence of the blood return and combining the numerical display of the piezometric tube 33. When the pressing bubble 6 is squeezed, the pressure measuring tube 33 shows that the pressure is low, which indicates that the indwelling needle still has good smoothness; if the pressure is abnormally high, it means that the indwelling needle is dislocated or blocked. In addition, the usability of the indwelling needle can be judged in an auxiliary way by matching with a constant-speed infusion pump and contrasting with a corresponding pressure range table.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (6)
1. The utility model provides a take remaining needle of pressure measurement function which characterized in that: the infusion device comprises a needle head (1), a hose (2) and an infusion tube connector (3) which are sequentially communicated, wherein auxiliary tubes (31), infusion tubes (32) and pressure measuring tubes (33) which extend in different directions are arranged on the infusion tube connector (3);
the auxiliary tube (31) is used for adding medicines;
the infusion tube (32) is used for connecting an infusion apparatus;
the piezometric tube (33) is used for testing puncture pressure.
2. The indwelling needle with manometry function according to claim 1, wherein: auxiliary tube (31), transfer line (32) and pressure-measuring pipe (33) the inner all with transfer line connector (3) inner chamber intercommunication, the mouth of pipe threaded connection of auxiliary tube (31) has sealing cap (4), the mouth of pipe of transfer line (32) is equipped with sealing joint (5), pressure-measuring pipe (33) are outer end confined cecum.
3. The indwelling needle with manometry function according to claim 1 or 2, wherein: infusion tube connector (3) are close to pressure-measuring pipe (33) are equipped with presses bubble (6), press bubble (6) with infusion tube connector (3) integrated into one piece, press the cavity of bubble (6) with infusion tube connector (3) inner chamber intercommunication.
4. The indwelling needle with manometry function according to claim 3, wherein: the pipe diameter of the pressure-measuring pipe (33) is smaller than the pipe diameters of the auxiliary pipe (31) and the infusion pipe (32), and the pipe diameter of the pressure-measuring pipe (33) is larger than the pipe diameter of the needle head (1).
5. The indwelling needle with manometry function according to claim 4, wherein: the piezometric tube (33) is a transparent pipeline, the wall of the piezometric tube is provided with pressure scale lines, and the unit of the pressure scale lines is cmH20。
6. The indwelling needle with manometry function according to claim 5, wherein: the length of the pressure measuring pipe (33) is larger than that of the auxiliary pipe (31) and the infusion pipe (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020134853.5U CN211724249U (en) | 2020-01-20 | 2020-01-20 | Remaining needle with pressure measuring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020134853.5U CN211724249U (en) | 2020-01-20 | 2020-01-20 | Remaining needle with pressure measuring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211724249U true CN211724249U (en) | 2020-10-23 |
Family
ID=72878726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020134853.5U Expired - Fee Related CN211724249U (en) | 2020-01-20 | 2020-01-20 | Remaining needle with pressure measuring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211724249U (en) |
-
2020
- 2020-01-20 CN CN202020134853.5U patent/CN211724249U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201023 Termination date: 20220120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |