CN219681333U

CN219681333U - Transfusion port with developing mark

Info

Publication number: CN219681333U
Application number: CN202320905130.4U
Authority: CN
Inventors: 沈冠蓉; 陈梦兰
Original assignee: Shenzhen Second Peoples Hospital
Current assignee: Shenzhen Second Peoples Hospital
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-09-15
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses an infusion port with a developing mark, which comprises a puncture seat, a central venous catheter and a metal marker convenient for ultrasonic development; the metal marker is fixedly arranged at the puncture seat and/or the connecting end of the central venous catheter. The beneficial effects are that: the utility model can rapidly determine whether the puncture seat has a turnover condition or not through an ultrasonic development method, so that the related difficulty in medical care work can be solved, medical staff can timely know the puncture seat and rapidly carry out the medical care of the patient in the next step according to the development result, the work load of the medical staff can be greatly saved, the fatigue of the medical staff is greatly lightened, the efficiency and the accuracy of the medical care can be improved, when the metal marker comprises the metal cover, the arranged metal cover not only has an ultrasonic development function, but also has the function of fixing the puncture septum, so that the puncture septum is not easy to be pulled out upwards from the clamping groove, the puncture septum is good in setting stability, and the puncture septum is good in sealing performance, so that the leakage prevention effect is good when the puncture seal is used.

Description

Transfusion port with developing mark

Technical Field

The utility model relates to the technical field of medical nursing products, in particular to an infusion port with a developing mark.

Background

The intravenous transfusion port is a newer transfusion pipeline technology, is called transfusion port for short, and is a fully-implanted closed transfusion system embedded in human body. The system generally comprises a central venous catheter having a distal end connected to an infusion lumen within a puncture site, and is shown in particular with reference to fig. 1 of the present specification.

In particular, in order to make use of minor surgery to puncture the central venous catheter subcutaneously into a great vein of a human body, such as subclavian vein or superior vena cava, a part of the central venous catheter is buried in subcutaneous tissue, a puncture seat at the other end is left in the subcutaneous tissue and is sutured and fixed, the appearance of skin only sees a small sutured wound after surgery, and a protruding sphere can be touched on the body surface of a patient after healing and removing stitches. During treatment, the needle is positioned from the position, and the needle is penetrated through the skin and vertically enters the infusion cavity in the puncture seat, so that the injection can be conveniently carried out, the continuous infusion and blood sampling can be carried out for a long time, and the infusion device is suitable for the infusion of high-concentration chemotherapeutic drugs, complete parenteral nutrient solution, blood products and the like.

Because the tail end of the central venous catheter is arranged in a great vein, the concentration of the medicine can be quickly diluted, and the stimulation and damage to the wall of a blood vessel are avoided, when the central venous catheter is used, compared with the common venous transfusion, the chance of vascular sclerosis can be reduced, and the pain caused by repeated needle insertion of the blood vessel can be reduced. The daily life of the patient is not limited after the infusion port is implanted, the patient is convenient and relaxed to receive the medical treatment, the life quality is greatly improved, and the infusion port specially arranged for the patient needing long-term and repeated infusion can be stored in the human body for a long time, so that the infusion port has been widely applied in modern medicine.

For the existing arm type transfusion port, referring to fig. 1 of the present utility model, because it is left in subcutaneous tissue of arm of patient for a long time, it is difficult for medical staff to know the fixing condition of the patient in subcutaneous tissue of arm of patient through skin surface of patient, for each time before intravenous puncture transfusion is performed on arm of patient, the medical staff needs to feel and judge whether the corresponding used transfusion port of patient turns over in subcutaneous tissue of arm of patient according to long time working experience, when the corresponding puncture seat placed in subcutaneous tissue of arm of patient turns over due to collision, compression, etc., the subsequent intravenous puncture transfusion related step is difficult to be performed on arm of patient, and the turned puncture seat needs to be reset in advance to execute the subsequent related steps.

However, the conventional transfusion ports are basically thick up and down, and it is difficult for medical staff who have just been trained or have insufficient experience to judge whether the puncture seat placed in subcutaneous tissue of the arm of a patient has a problem of overturning or not through touching, and the problem is also a difficulty that cannot be rapidly solved in the medical work.

In this regard, the present inventors have gradually conceived and designed the present utility model by combining clinical experience, through thinking about problems encountered in clinical work, browsing through a great deal of scientific research data and documents, and searching through the website of the national intellectual property office, to solve the relevant technical problems.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model aims to provide an infusion port with a developing mark.

In order to achieve one of the above objects, an infusion port with a developing mark according to an embodiment of the utility model comprises a puncture seat, a central venous catheter which is arranged outside the puncture seat and is communicated with the inside of the puncture seat, and a metal marker which is convenient for ultrasonic development;

the metal marker is fixedly arranged at the puncture seat and/or the connecting end of the central venous catheter.

In addition, the transfusion port with the developing mark according to the embodiment of the utility model can also have the following additional technical characteristics:

according to one embodiment of the utility model, the puncture seat comprises a hollow seat body with an upper part formed to be open and a puncture barrier encapsulated at the upper opening of the hollow seat body;

the puncture spacer seals the upper opening of the hollow seat body so as to form an infusion cavity inside the hollow seat body; the hollow seat body is made of hard plastic materials; the puncture septum is made of soft silica gel material.

According to one embodiment of the utility model, the middle part of the upper end surface of the hollow seat body is cut downwards to form a clamping groove with the inner diameter larger than that of the infusion cavity; the puncture spacer is fixedly arranged in the clamping groove through strong adhesive in interference fit.

According to one embodiment of the utility model, the metal marker comprises a metal cap;

the metal cover is sleeved and fixed outside the upper end of the hollow seat body, a puncture opening is formed in the middle of the upper end surface of the metal cover downwards, and the inner diameter of the puncture opening is slightly smaller than the outer diameter of the puncture spacer;

when the metal cover is sleeved and fixed outside the upper end of the hollow seat body, the part of the upper end surface of the hollow seat body, which is positioned at the periphery of the puncture opening, is used for pressing and fixing the periphery of the puncture barrier.

According to one embodiment of the utility model, a circle of concave steps are formed at the upper end of the hollow seat body in an inward cutting mode, and external threads are arranged on the outer wall of the concave steps; the lower part of the metal cover is formed into an opening, and the inner wall is provided with an internal thread meshed with the external thread.

According to one embodiment of the utility model, the outer wall of the lower end of the hollow seat body is provided with a connecting port communicated with the transfusion cavity; the central venous catheter comprises a catheter body and a connector coaxially connected to one end of the Guan Tidi; the end part of the connector is in sealing connection with the connector.

According to one embodiment of the utility model, the metal marker further comprises a metal sleeve;

the metal sleeve is sleeved and fixed outside the connector.

According to one embodiment of the utility model, the hollow seat body is integrally formed into a conical table-like structure with a small upper part and a large lower part.

The beneficial effects of the utility model are as follows:

the first point is that the transfusion port with the developing mark provided by the utility model can quickly determine whether the puncture seat has a turnover condition or not through an ultrasonic developing method when the transfusion port with the developing mark is in particular implementation, so that the related difficulty in medical care work can be solved, medical staff can know the medical care of a patient in time and quickly carry out the medical care of the patient in the next step according to the developing result, the workload of the medical staff can be greatly saved, the fatigue of the medical staff can be greatly reduced, and the efficiency and the accuracy of the medical care can be improved.

And when the metal marker comprises the metal cover, the metal cover not only has an ultrasonic developing function, but also has the function of fixing the puncture barrier, so that the puncture barrier is not easy to deviate upwards from the clamping groove, the puncture barrier is good in fixing stability, and the puncture opening is good in sealing performance, so that the whole formed by the metal cover is good in liquid leakage prevention effect and use reliability.

And the third point is that the hollow seat body is integrally formed into a conical table-shaped structure with a small upper part and a large lower part, so that the hollow seat body is more stable to rest when being placed in subcutaneous tissues of arms of patients, and is not easy to turn over or overturn.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the overall structure of an infusion port as is common in the prior art

FIG. 2 is a schematic view showing the overall structure of the port with developing marks according to the present utility model;

FIG. 3 is an exploded view of the port of the present utility model with a developed indicia;

reference numerals:

transfusion port 1000 with developing mark;

a puncture seat 10;

a hollow housing 101;

an infusion chamber 1011;

a clamping groove 1012;

a concave step 1013;

external threads 1014;

a puncture septum 102;

a central venous catheter 20;

a tube 201;

a connector 202;

a metal marker 30;

a metal cover 301;

a puncture 3011;

a metal sleeve 302;

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; 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 utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

First, a basic description is made of the port of infusion.

The process of the utility model of this patent will be described below.

For the existing arm type transfusion port, referring to fig. 1 in the specification of the present utility model, because the port is left in the subcutaneous tissue of the arm of the patient for a long time, it is difficult for the medical staff to know the condition that the port is fixed in the subcutaneous tissue of the arm of the patient through the skin surface of the patient, for each time before the intravenous puncture transfusion is performed on the arm of the patient, the medical staff needs to feel according to long-time working experience and judge whether the port of the patient is overturned in the subcutaneous tissue of the arm of the patient, when the patient is overturned due to collision, compression and other conditions, the corresponding puncture seat placed in the subcutaneous tissue of the arm of the patient is overturned, so that the subsequent relevant steps of the intravenous puncture transfusion are difficult to be performed on the arm of the patient, and the overturned puncture seat needs to be reset in advance to execute the subsequent relevant steps.

However, the inventor of the present patent found that, in the working process, the conventionally used transfusion port is basically thick up and down, and for the medical staff who just have practice or experience inadequately, it is difficult to judge whether the puncture seat placed in subcutaneous tissue of the arm of the patient has a problem of overturning by touching, and this is also a difficult problem that cannot be rapidly solved in the medical work.

The following describes in detail the port 1000 with a developing mark according to an embodiment of the present utility model with reference to the drawings.

Referring to fig. 2 to 3, the transfusion port 1000 with developing mark according to the embodiment of the present utility model includes a puncture seat 10, a central venous catheter 20 disposed outside the puncture seat 10 and communicating with the inside of the puncture seat 10, and a metal marker 30 for facilitating ultrasonic development;

wherein, the metal marker 30 is fixedly arranged at the connection end of the puncture seat 10 and/or the central venous catheter 20.

Further, in practice, according to an embodiment of the present utility model, the puncture seat 10 includes a hollow seat 101 with an upper portion formed to be open, and a puncture barrier 102 enclosed at the upper opening of the hollow seat 101;

wherein, the puncture septum 102 seals the upper opening of the hollow seat 101, so that the inside of the hollow seat 101 is formed into an infusion cavity 1011; the hollow seat 101 is made of hard plastic material; the puncture septum 102 is made of soft silica gel material.

Based on the above, it is clear that the present utility model is mainly used as the port 1000 with developing marks when it is implemented.

Specifically, in applying the present utility model, as described in the above-mentioned related matters for the simple introduction of the port, the central venous catheter 20 of the present utility model is percutaneously punctured into the great vein of the arm of the patient by using a minor surgery method, so that a part of the central venous catheter 20 is buried in the subcutaneous tissue of the arm of the patient, and the puncture seat 10 at the other end is left in the subcutaneous tissue of the arm of the patient and is sutured and fixed.

Subsequently, the medical staff can sweep the medical ultrasonic probe along the arm of the patient to the connection end of the puncture seat 10 and the central venous catheter 20, because the hollow seat body 101 is made of hard plastic material, the puncture septum 102 is made of soft silica gel material, and because the metal marker 30 is obviously made of metal material, during actual ultrasonic scanning, the density of the metal marker 30 made of metal material is greater, so that the medical ultrasonic probe is more convenient for ultrasonic development to distinguish from the muscle tissue of the arm of the patient, the puncture seat 10 and the connection end of the central venous catheter 20.

For this, it can be summarized that:

when the puncture seat 10 is turned over, the metal marker 30 after ultrasonic development is necessarily far away from the skin surface of the patient's arm, so that the medical staff can determine that the turning over condition occurs, whereas when the puncture seat 10 is fixed at the bottom of the puncture seat 10, the medical staff can know that the puncture seat 10 is placed in subcutaneous tissue of the patient's arm, the metal marker 30 is slightly far away from the skin surface of the patient's arm, the actual distance between the metal marker 30 and the skin surface of the patient's arm is checked through ultrasonic development, and when the puncture seat 10 is turned over, the metal marker 30 after ultrasonic development is necessarily far away from the skin surface of the patient's arm, so that the medical staff can determine that the turning over condition occurs, otherwise, when the puncture seat 10 is fixed at the bottom of the puncture seat 10, the medical staff can know that the puncture seat 10 is placed in subcutaneous tissue of the patient's arm, the metal marker 30 is slightly far away from the skin surface of the patient's arm, and the actual distance between the metal marker 30 and the skin surface of the patient's arm is checked through ultrasonic development, so that the medical staff can determine that the turning over condition occurs.

When the metal marker 30 is fixed at the connecting end of the central venous catheter 20, the connecting end of the central venous catheter 20 is communicated with the lower portion in the puncture seat 10 when leaving the factory, so that by means of the structural specificity of the metal marker 30, medical staff can know that the central venous catheter 20 is placed in subcutaneous tissue of a patient arm in advance, the metal marker 30 is slightly far away from the skin surface of the patient arm, the actual distance between the metal marker 30 and the skin surface of the patient arm is checked through ultrasonic development, and when the puncture seat 10 is overturned, the metal marker 30 fixed at the connecting end of the central venous catheter 20 is overturned together, so that the ultrasonic development is necessarily close to the skin surface of the patient arm, and therefore, the medical staff can judge that the puncture seat 10 overturns.

In addition, when the metal marker 30 is fixed at the connection end of the puncture seat 10 and the central venous catheter 20, the method of combining the first point and the second point can be adopted to select the fixing position of the metal marker 30 to fix the metal marker, and then, whether the puncture seat 10 has a turnover condition can be still judged by an ultrasonic development method.

As described above, it can be clear that, in a specific application, the utility model can quickly determine whether the puncture seat 10 has a turnover condition by using an ultrasonic developing method, so that the related difficulty in medical care work can be solved, the medical care personnel can know in time, and the patient can be quickly treated for the subsequent medical care according to the developing result, so that the workload of the medical care personnel can be greatly saved, the fatigue of the medical care personnel can be greatly reduced, and the efficiency and accuracy of the medical care can be improved.

Furthermore, through the optimization design, the utility model has strong practicability and good use effect.

Still further, in the embodiment, as shown in fig. 2, according to an embodiment of the present utility model, a clamping groove 1012 with an inner diameter larger than the inner diameter of the infusion cavity 1011 is formed in the middle of the upper end surface of the hollow seat 101 by cutting downwards; the puncture spacer 102 is preferably secured to the clamping groove 1012 by a strong adhesive interference fit.

Thus, it will be appreciated that the manner in which the septum 102 is secured in the present utility model is substantially the same as the manner in which a septum is secured in a conventional port, and therefore details thereof will not be discussed in detail herein.

Also, in the present technical solution, according to one embodiment of the present utility model, the metal marker 30 includes a metal cover 301;

the metal cover 301 is fixedly sleeved outside the upper end of the hollow seat 101, a puncture opening 3011 is formed in the middle of the upper end surface of the metal cover 301 downwards, and the inner diameter of the puncture opening 3011 is slightly smaller than the outer diameter of the puncture spacer 102;

when the metal cover 301 is fixed to the outside of the upper end of the hollow base 101, the part of the upper end surface of the hollow base 101 located at the periphery of the puncture 3011 presses and fixes the periphery of the puncture barrier 102.

From the foregoing, it is clear that, in the preferred embodiment of the present utility model, the metal cover 301 is sleeved and fixed on the upper end of the hollow seat 101, on the one hand, after the metal cover 301 is sleeved and fixed on the upper end of the hollow seat 101, the medical staff can know that the puncture seat 10 is placed in subcutaneous tissue of the arm of the patient in advance, the metal cover 301 is close to the skin surface of the arm of the patient, and the actual distance between the metal cover 301 and the skin surface of the arm of the patient is checked through ultrasonic development, when the puncture seat 10 has a overturn condition, the metal marker 30 which is subjected to ultrasonic development must be far from the skin surface of the arm of the patient, so that the medical staff can determine that the puncture seat 10 has the overturn condition. On the other hand, the metal cover 301 not only has an ultrasonic developing function, but also has the function of fixing the puncture barrier 102, so that the puncture barrier 102 is not easy to shift upwards and fall out from the clamping groove 1012, the puncture barrier 102 is fixed and stable, and the puncture opening 3011 is sealed, so that the whole body formed by the utility model has good leakage preventing effect and good use reliability.

Further, in the embodiment, as shown in fig. 2, according to an embodiment of the present utility model, a circle of concave steps 1013 are formed on the upper end of the hollow seat 101 by cutting inwards, and external threads 1014 are provided on the outer wall of the concave steps 1013; the lower portion of the metal cap 301 is formed to be opened, and the inner wall is provided with an internal thread engaged with the external thread 1014.

Thus, it can be understood that the metal cover 301 is preferably screwed to the outside of the upper end of the hollow base 101, so that the metal cover itself is also fixed firmly and is not easy to be removed.

In a preferred embodiment, the inner wall of the metal cover 301 is preferably coated with a layer of strong adhesive, and is screwed on the outer side of the upper end of the hollow base 101, so that after the strong adhesive is solidified, the metal cover 301 and the upper end of the hollow base 101 are fixed together, so that they are not easily detached from each other, and the fixing stability of the puncture barrier 102 is better.

In addition, in this technical solution, according to an embodiment of the present utility model, a connection port that is communicated with the infusion cavity 1011 is opened on the outer wall of the lower end of the hollow seat 101; the central venous catheter 20 comprises a catheter body 201 and a connector 202 coaxially connected to a first end of the catheter body 201; the end of the connector 202 is in sealing connection with the connector.

It will be understood that the manner of fixing the central venous catheter 20 and the puncture base 10 according to the present utility model is substantially the same as that of fixing the central venous catheter and the puncture base in a conventional port, and details thereof will not be described in detail herein.

Also, in specific implementations, still referring to FIG. 2, according to one embodiment of the present utility model, the metallic marker 30 further includes a metallic sleeve 302;

wherein the metal sleeve 302 is fixed to the outside of the connector 202.

Preferably, in this embodiment, the metal sleeve 302 is preferably screwed on the outside of the connector 202, so that the metal sleeve 302 is also fixed with good stability and is not easy to be removed.

In a preferred embodiment, the inner wall of the metal sleeve 302 is preferably coated with a strong adhesive and screwed on the outer surface of the connector 202, so that after the strong adhesive is solidified, the metal sleeve 302 and the connector 202 are fixed and integrated, so that the metal sleeve and the connector are not easily detached and separated from each other, the integrity of the utility model is stronger, and the use is more stable.

In all the embodiments described above, according to an embodiment of the present utility model, the hollow base 101 is integrally formed into a conical table-like structure with a small top and a large bottom.

Thus, when the hollow seat 101 is placed in subcutaneous tissue of an arm of a patient, the hollow seat is placed more firmly, so that the hollow seat is not easy to turn over or overturn.

Other embodiments, etc., are not illustrated herein.

In summary, when the transfusion port 1000 with the developing mark is implemented, whether the puncture seat 10 is overturned or not can be quickly determined by the ultrasonic developing method, so that the related difficulty in medical care work can be quickly solved, medical staff can know the medical care in time, and the patient can be quickly treated for the subsequent medical care according to the developing result, so that the workload of the medical staff can be greatly saved, the fatigue of the medical staff can be greatly reduced, and the efficiency and the accuracy of the medical care can be improved.

When the metal marker 30 includes the metal cap 301, the metal cap 301 has an ultrasonic developing function, and also has an effect of fixing the puncture barrier 102, so that the puncture barrier 102 is not easy to be separated from the fastening groove 1012, the puncture barrier 102 is fixed stably, and the puncture opening 3011 is sealed well, so that the whole body formed by the utility model has a good leakage-proof effect and good use reliability.

And the hollow seat 101 is integrally formed into a conical table structure with a small upper part and a large lower part, so that the hollow seat 101 is more stable to be placed when placed in subcutaneous tissues of arms of patients, and is not easy to turn over or overturn.

Furthermore, the transfusion port 1000 with the developing mark provided by the utility model has extremely strong practicality and extremely good use effect, so that the transfusion port 1000 with the developing mark has extremely good market popularization value, is very popular, and can be effectively popularized.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. The transfusion port with the developing mark comprises a puncture seat and a central venous catheter which is arranged outside the puncture seat and is communicated with the inside of the puncture seat, and is characterized by further comprising a metal marker which is convenient for ultrasonic development;

2. The port with development mark according to claim 1, wherein the puncture seat comprises a hollow seat body with an upper part formed to be open and a puncture septum encapsulated at the upper opening of the hollow seat body;

3. The transfusion port with the developing mark according to claim 2, wherein a clamping groove with an inner diameter larger than the inner diameter of the transfusion cavity is formed in the middle of the upper end surface of the hollow seat body in a downward cutting mode; the puncture spacer is fixedly arranged in the clamping groove through strong adhesive in interference fit.

4. The tamper-evident port of claim 3, wherein the metal marker comprises a metal cap;

the metal cover is sleeved and fixed outside the upper end of the hollow seat body, a puncture opening is formed in the middle of the upper end surface of the metal cover downwards, and the inner diameter of the puncture opening is smaller than the outer diameter of the puncture spacer;

5. The transfusion harbor with developing mark according to claim 4, wherein the upper end of the hollow seat body is cut inwards to form a circle of concave steps, and the outer wall of the concave steps is provided with external threads; the lower part of the metal cover is formed into an opening, and the inner wall is provided with an internal thread meshed with the external thread.

6. The transfusion port with the developing mark according to claim 4, wherein the outer wall of the lower end of the hollow seat body is provided with a connecting port communicated with the transfusion cavity; the central venous catheter comprises a catheter body and a connector coaxially connected to one end of the Guan Tidi; the end part of the connector is in sealing connection with the connector.

7. The tamper-evident port of claim 6, wherein the metal marker further comprises a metal sleeve;

the metal sleeve is sleeved and fixed outside the connector.

8. The tamper-evident port of any one of claims 2-7, wherein the hollow housing is integrally formed as a tapered mesa structure with a smaller top and a larger bottom.