TWM444846U - Protection sleeve for pressure monitoring - Google Patents

Description

Pressure monitoring protective cover

The present invention relates to a medical device device, in particular to a pressure monitoring device for pressure monitoring of a patient's extracorporeal blood circulation circuit of the medical device, in order to avoid the risk of bacterial infection of the operator and the patient.

In general, as shown in FIG. 5, in a medical device such as the hemodialysis device 8, the circulation of the patient's blood outside the body is an extracorporeal blood circulation circuit composed of a flexible tube, and the extracorporeal blood circulation circuit mainly includes The arterial side blood flow path 81 to which the arterial side puncture needle for taking blood from the patient is attached at the distal end, and the vein side blood flow path 82 for returning blood to the patient's vein side puncture needle at the distal end is attached to the arterial side blood flow path 81. A dialyzer 83 is installed between the vein side blood flow path 82.
Further, a blood pump 84 for stretching is disposed on the arterial blood channel 81, and the blood pump 84 is driven to take blood from the patient from the artery side puncture needle, and the blood flow to the artery side 81, the dialyzer 83, and the vein side blood. Extracorporeal blood circulation is performed in the flow path 82. A plurality of hollow fiber tubes are disposed inside the dialyzer 83, and blood is respectively transmitted through the inside of each of the hollow fiber tubes, and the wall surface of the hollow fiber tube forms minute pores to constitute a blood purification membrane, and penetrates the inside of the hollow fiber tube. The waste of blood or the like is discharged into the dialysate through the blood purification membrane, and the purified blood such as waste is discharged back to the patient's body.
Further, a blood pressure monitoring pressure gauge 85 is usually attached to the arterial blood flow path 81 and the venous blood flow path 82 of the hemodialysis apparatus 8 to allow the medical staff to easily recognize the current blood pressure of the patient. In order to prevent external bacterial virus contaminants from entering the extracorporeal blood circulation circuit of the hemodialysis device 8 from here, causing bacterial infection of the patient, there has been a known practice of developing a protective cover as shown in Fig. 6. Structure 9, the conventional structure 9 is installed upstream of the pressure gauge 85, that is, between the extracorporeal blood circulation circuit and the pressure gauge 85 to prevent contaminants such as bacterial viruses from entering the hemodialysis device 8, or Contaminants such as bacterial viruses in the extracorporeal blood circulation circuit are prevented from flowing out. Further, the conventional structure 9 is composed of a male needle base 91, a filter membrane 92, and a female needle base 93, and the filter membrane 92 is integrally connected to the male needle base 91, which is difficult to manufacture and has increased manufacturing. At the cost, the female needle base 93 cannot be accurately attached to the male needle base 91, so that the manufacturing defect rate is improved. Moreover, the periphery of the male needle base 91 and the female needle base 93 of the conventional structure 9 is a smooth surface without a ridge, which is disadvantageous for the operator to mount the conventional structure 9 to the extracorporeal blood circulation circuit and the pressure gauge 85. between.

Therefore, the main purpose of this creation is to provide a pressure monitoring protective cover that is easy to manufacture and can improve manufacturing yield. The secondary purpose of this creation is to provide a pressure monitoring protective sleeve with accurate assembly of the male needle base and the female needle base. Another purpose of this creation is to provide a pressure monitoring protective case that is easy to assemble into medical equipment.
In order to carry out the above purposes, the creator created a pressure monitoring protective sleeve based on the long-term research and conception of the pressure monitoring protective sleeve, which includes: a male needle base, which is a hollow tubular fitting, the most important of which is a The center of the first flange body extends from the first connecting portion, and the first connecting portion is formed by a small column tube member and a peripheral tube surrounding the periphery of the small column tube member, and the inner circumference of the peripheral tube is provided with an inner portion a female needle base, which is also a hollow tubular member, which is mainly formed by a second connecting portion extending from the center of a second flanged disc body, and the second connecting portion is provided with an external thread, and the female needle base Ultrasonic welding is connected to the stylus base to form a chamber; and the second flange body is provided with a flange portion inserted into the chamber; and a filter film is fixed in the chamber. It is a non-hydrophilic membrane (Hydrophobic Membrane) which can effectively block water and only allow air to pass through. The filter membrane is pre-set between the male needle base and the female needle base, and the filter membrane can be used as a filter for bacteria and viruses. Contaminant, the medical device is not Related impairment under pressure, the pressure in the extracorporeal blood circulation circuit is transmitted to the blood pressure gauge, high degree of security while protecting a medical device without the risk of contamination from pathogens in the extracorporeal circulation circuit.
The female needle base is provided with an outlet, and the male needle base is provided with an inlet which is intended to be disposed in a fluid communicating with the extracorporeal blood circulation circuit, the outlet being intended to be connected to a fluid line for the fluid circuit and the medical device The pressure gauges are operatively connected.
The small column tube of the first connecting portion of the male needle base is pushed and pulled, and the minimum distance between the bottommost portion of the small column tube and the inner wall of the peripheral tube is smaller than the tube thickness of the fluid line.
The filter membrane described above is a medical membrane having a minimum pore size of 0.2 micrometer to effectively prevent the hepatitis B virus (0.235 micrometer) from crossing the infection.
The inner diameter of the chamber described above is equal to the outer diameter of the filter membrane.
The second flange disc body of the above-mentioned base pin base is provided with a plurality of grooves, and the plurality of grooves are horizontally placed to form the inside of the second flange disc body into a "m" shape or more. The material used for the base needle is semi-rigid PVC (medical grade) or composite PC (medical grade), which does not precipitate toxic substances into the extracorporeal blood circulation circuit.
The pressure monitoring protective cover described above, wherein the peripheral tube is provided with a ridge or an embossing.
The pressure monitoring protective cover described above, wherein a periphery of the first flange body of the male needle base is provided with a ridge or an embossing.
The pressure monitoring protective cover described above, wherein a periphery of the second flange body of the female needle base is provided with a ridge or an embossing.
(cf. the efficacy of prior art)
As can be seen from the above description, this creation can achieve the following effects compared to the prior art:
1. In the process of manufacturing and assembling the creative protective cover, as long as the filter film is directly placed in the chamber, it is not necessary to integrally combine the male needle base and the filter membrane in advance as in the conventional structure 9, so the creation can simplify the process. And easy to manufacture, and improve manufacturing yield.
2. The second flange body of the base of the present invention is provided with a flange portion which is inserted into the chamber even if the base pin base is precisely aligned and inserted into the male needle base, and then the male The female needle base is applied to the ultrasonic welding manner to adhere to each other, and the side end surface of the second flange disc body has a function of pressing against and positioning the filter film, so that the male needle base and the female needle base are assembled accurately.
3. The first connecting portion of the male needle base is composed of a small column tube member and a peripheral tube surrounding the periphery of the small column tube member, and the inner circumference of the peripheral tube is provided with an internal thread, and the female needle base is second. The connecting portion, the second connecting portion is provided with an external thread, and the periphery of the male needle base and the female needle base are provided with a ridge or an embossing, so that the protective cover of the present invention is easily assembled into the medical device, and the medical treatment is ensured. The extracorporeal blood circuit of the device is in a sealed and safe state.

To further illustrate the above objects, technical means, and achievable effects of the present invention, the present author will describe the preferred embodiment as follows:
First of all, please refer to the figures 1, 2, and 3, which is a pressure monitoring protective cover comprising: a male needle base 1, a female needle base 2, a chamber 3 and a filter membrane. 4; among them,
The male needle base 1 is a hollow tubular member and the material used is medical grade semi-rigid PVC (Polyvinylchloride, PVC) or medical grade composite PC, which is mainly composed of a first flange disc body. The center of the eleventh portion extends from the first connecting portion 12, and the first connecting portion 12 is formed by a small column tube member 121 and a peripheral tube 122 surrounding the periphery of the small column tube member 121. The inner thread 123 and the outer circumference of the peripheral tube 122 are provided with a ridge 124 or an embossing (not shown), and the outer circumference of the first flange body 11 of the male needle base 1 is also provided with a ridge 111 or pressure. Flower (not shown);
The base 2 is also a hollow tube and the material used is a medical grade semi-rigid PVC or medical grade composite PC, which is mainly extended from the center of a second flange body 21. The second connecting portion 22 and the outer circumference of the second flange body are formed as a ridge 212 or an embossing (not shown), and the second connecting portion 22 is provided with an external thread 221, and the female base The second flange body 21 of the second flange body 21 is connected to the first flange disk body 11 of the male needle base 1, and a cavity 3 is formed. The inner diameter of the cavity 3 is almost equal to or slightly larger than the outer diameter of the filter membrane 4. The filter membrane 4 can be easily placed inside the chamber 3; further, the outer diameter of the flange portion 23 is almost equal to or slightly smaller than the inner diameter of the chamber 3, so that the second flange body 21 The flange portion 23 is ultrasonically welded to the chamber 3, or the flange portion 23 of the female needle base 2 is hardly squeezed into the chamber 3 of the male needle base 1 in a tight fit manner; The second flange body 21 of the base 2 is provided with a plurality of grooves 211, and the plurality of grooves 211 are horizontally placed to form a "meter" shape inside the second flange body; and the filter film 4, is fixed in the aforementioned Room 3, which is a non-hydrophilic membrane (Hydrophobic Membrane), can effectively block water, allowing only air to pass; and the membrane 4 is a medical membrane with a minimum pore size of 0.2 micrometer to effectively prevent hepatitis B virus (0.235 micrometer) Cross infection.
Referring to Figure 3, the structure of the pressure monitoring protective sleeve of the present invention is in a press-in machine with ultrasonic welding, and the female needle base 2 is inverted and positioned in a predetermined mold. Then, the operator takes a filter membrane 3 into the chamber 3 of the female needle base 2, and finally aligns the male needle base 1 into the female needle base 2, and then a pressing device of the machine The flange portion 23 of the female needle base 2 is pressed into the chamber 3 in a rigid manner, and then applied to the male needle base 1 and the female needle base 2 by a mold to superheat the ultrasonic wave, and the male needle base 1 The shallow surface of the contact surface of the flange portion 23 of the female needle base 2 is melted and combined to thereby seal the chamber 3, and the filter membrane 4 is also positioned in the chamber 3.
Referring to FIGS. 3 and 4, the second connecting portion 22 of the female needle base 2 is provided with an outlet 24, and the first connecting portion 12 of the male needle base 1 is provided with an inlet 13. The inlet 13 is intended to be disposed in a fluid that communicates with the extracorporeal blood circulation circuit in a manner that the second connection portion 22 of the female needle base 2 is inserted into a fluid line 61 (or inserted into a male needle base of the machine). Not shown), the fluid line 61 is operatively coupled to the pressure gauge 6 of the medical device, and the external thread 221 of the second connecting portion 22 is pressed against the inner hole 611 of the fluid line 61 to thereby seal the joint. The effect is to prevent leakage of blood. In addition, the inlet 13 is intended to be connected to the hose 51 of the extracorporeal blood circulation circuit (or to a female needle base of an extracorporeal blood circulation circuit, not shown) in a manner in which the hose 51 of the extracorporeal blood circuit is inserted. The first connecting portion 12 of the male needle base 1. Generally, the minimum distance 14 between the bottommost portion of the small tubular member 121 and the inner wall of the peripheral tube 122 is smaller than the tube thickness 512 of the hose 51 of the extracorporeal blood circuit, and generally the small tubular member of the first connecting portion 12 121 has a degree of pushing, so that the small column tube member 121 is easily inserted into the inner hole 511 of the hose 51 of the extracorporeal blood circulation circuit, thereby expanding the outer diameter of the outer tube of the extracorporeal blood circulation circuit 51, and the outer body The outer diameter of the outer diameter of the hose 51 of the blood circulation circuit is again pressed by the internal thread 123 of the peripheral tube 122 of the first connecting portion 12, thereby achieving a completely sealed state of the joint, preventing external air from entering, or internal air and blood. Can't leak. Also, the periphery of the first flange body 11 of the male needle base 1 and the periphery of the second flange disk body 21 of the female needle base 2 are provided with ridges 111, 212 or embossing (not shown) and the trocar base 1 The peripheral tube 122 of the first connecting portion 12 is also provided with a ridge 124 for the operator to easily install the pressure monitoring protective sleeve A of the present invention between the extracorporeal blood circulation circuit 5 and the pressure gauge 6.
In combination with the above-mentioned embodiments, the present invention relates to a pressure monitoring protective cover, after the male needle base 1, the female needle base 2, and the like are precisely sealed, and the filter film 3 is preliminarily provided therein. The filter membrane 3 can filter bacteria and virus contaminants, and the medical equipment and equipment can transmit the blood pressure condition of the patient to the pressure gauge 6 through the pressure of the extracorporeal blood circulation circuit 5 without relevant pressure loss, and protect the medical treatment with high safety. The operator of the equipment is not exposed to the risk of infection from pathogens in the extracorporeal blood circulation circuit 5, and its structure and achieved efficacy have not been seen in the publications or public use, and it is in line with the requirements of the new patent application. Granting patents, and praying for it;
For those who need to be clear, the above is the technical principle that is applied immediately by the specific implementation of this creation. If the changes made according to the concept of this creation have not yet exceeded the spirit of the manual and the schema , should be within the scope of this creation, combined with Chen Ming.

[This creation]
A‧‧‧Pressure monitoring protective cover
1‧‧‧Male needle base
11‧‧‧First flange body
111‧‧‧ embossing
12‧‧‧First Connection
121‧‧‧Small column fittings
122‧‧‧peripheral tube
123‧‧‧ internal thread
124‧‧‧ embossing
13‧‧‧ entrance
14‧‧‧Minimum distance
2‧‧‧Female base
21‧‧‧Second flange body
211‧‧‧ Groove
212‧‧‧ embossing
22‧‧‧Second connection
221‧‧‧ external thread
23‧‧‧Flange
24‧‧‧Export
3‧‧‧ chamber
31‧‧‧ inside diameter
4‧‧‧Filter membrane
41‧‧‧ outside diameter
5‧‧‧External blood circulation circuit
51‧‧‧Hose
511‧‧‧ hole
512‧‧‧ tube thickness
6‧‧‧ pressure gauge
61‧‧‧ Fluid lines
611‧‧‧ hole
[知知]
8‧‧‧ Hemodialysis unit
81‧‧‧Arterial blood flow
82‧‧‧Vein side blood flow
83‧‧‧ dialyzer
84‧‧‧ blood pump
85‧‧‧ pressure gauge
9‧‧‧Learning structure
91‧‧‧Male needle base
92‧‧‧Filter membrane
93‧‧‧Female base

Fig. 1 is a perspective view showing a preferred embodiment of the present invention.
Figure 2 is a perspective exploded view of a preferred embodiment of the present invention.
Figure 3 is a plan sectional view showing a preferred embodiment of the present invention.
Fig. 4 is a view showing a state in which the preferred embodiment of the present invention is applied to a medical device.
Figure 5: Schematic representation of an extracorporeal blood circuit that is a general medical device such as hemodialysis.
Figure 6 is a schematic view of the structure of a conventional protective cover.

A‧‧‧Pressure monitoring protective cover

1‧‧‧Male needle base

11‧‧‧First flange body

111‧‧‧ embossing

12‧‧‧First Connection

121‧‧‧Small column fittings

122‧‧‧peripheral tube

123‧‧‧ internal thread

124‧‧‧ embossing

2‧‧‧Female base

21‧‧‧Second flange body

212‧‧‧ embossing

22‧‧‧Second connection

221‧‧‧ external thread

Claims (10)

A pressure monitoring protective cover includes:
A male needle base is a hollow tubular member which is mainly extended from a center of a first flange disc body to a first connecting portion, and the first connecting portion is surrounded by a small column tubular member and a periphery of the small tubular member The peripheral tube is formed, and the inner circumference of the peripheral tube is provided with an internal thread;
A female needle base is also a hollow tubular member, which is mainly formed by a second connecting portion extending from the center of a second flange disc body, and the second connecting portion is provided with an external thread, and the female needle base is super The sound wave welding method is connected to the male needle base to form a chamber; the second flange disk body is provided with a flange portion to be inserted into the chamber; and a filter film is fixed in the chamber, which is A non-hydrophilic membrane (Hydrophobic Membrane) is effective in isolating moisture and allowing only air to pass through;
The filter membrane is preliminarily provided between the male needle base and the female needle base, and the filter membrane filters substances such as bacteria or virus contaminants, so that the medical device can pass the blood pressure of the patient to the extracorporeal blood without any relevant pressure loss. The circulation loop is passed to a pressure gauge to measure blood pressure while highly safely protecting the medical device from the risk of contamination from pathogens from the extracorporeal blood circuit. The pressure monitoring protective sleeve according to claim 1, wherein the female needle base is provided with an outlet, and the male needle base is provided with an inlet which is intended to be disposed in a fluid communicating with the extracorporeal blood circulation circuit, the outlet being predetermined A fluid line is coupled to operatively connect the fluid line to a pressure gauge of the medical device. The pressure monitoring protective sleeve according to the second aspect of the patent application, wherein the small column tube of the first connecting portion of the male needle base is pushed and pulled, and the bottom of the small tubular tube member and the inner wall of the peripheral tube are The minimum distance is less than the tube thickness of the fluid line. According to the pressure monitoring protective cover described in claim 1, wherein the filter membrane is a medical membrane, and the minimum pore system is 0.2 micrometer, which can effectively prevent the hepatitis B virus (0.235 micrometer) from crossing the infection. The pressure monitoring protective cover according to claim 1, wherein the inner diameter of the chamber is equal to the outer diameter of the filter membrane. The pressure monitoring protective sleeve according to claim 1, wherein the second flange body of the female needle base is provided with a plurality of grooves, and the plurality of grooves are horizontally placed on the second flange body The inside forms a "meter" shape. According to the pressure monitoring protective sleeve described in the second paragraph of the patent application scope, the material used for the male needle base and the female needle base is medical grade semi-rigid PVC or medical grade composite PC, and no toxic substances are precipitated to the outside of the body. In the blood circulation circuit. The pressure monitoring protective cover according to any one of claims 1 to 7, wherein the peripheral tube is provided with a ridge or an embossing. The pressure monitoring protective cover according to any one of the preceding claims, wherein the first flange body of the male needle base is provided with a ridge or an embossing. The pressure monitoring protective cover according to any one of claims 1 to 7, wherein the second flange body of the female needle base is provided with a ridge or an embossing.