Injection assist device

Abstract

The utility model provides an injection assist device. The injection assist device comprises a shell. A through hole for adsorbing a part to be injected and a needle hole for injection are formed in the shell, and the needle hole is communicated with the through hole. The air extractor communicates with the first space in the shell and is used for extracting air in the first space. When the air extractor extracts air in the first space, a needle head extends into the through hole, and injection is carried out on a to-be-injected part in the through hole. In this way, the needle performs injection through the needle hole, and the injection position is relatively fixed; as the injection position is relatively fixed, the injection depth can be conveniently controlled; the success rate of surgery can be obviously improved, and the treatment effect is ensured.

Description

Technical Field

[0001] The present invention generally relates to the technical field of medical instruments, and in particular to an injection aid. Background Art

[0002] Internal hemorrhoid injection therapy is currently a commonly used treatment option for internal hemorrhoids. It is simple to administer, safe, inexpensive, and provides effective hemostasis. Conventional injections typically require first determining the intended injection site, then inserting the needle upward at a 30-45 degree angle into the hemorrhoidal submucosa for injection.

[0003] When injecting internal hemorrhoids, there are certain requirements for injection location and depth. If the injection depth is too shallow, the drug solution is injected into the surface of the mucosa, which may cause mucosal ulceration and infection. If the injection depth is too deep, the drug solution is injected into the muscular layer, which may cause pain, muscle sclerosis, necrosis, and eventually anal stenosis. If the injection position deviates too much, injecting into the external hemorrhoid area may cause edema and pain.

[0004] However, existing injection assist devices have a poor field of view during surgery and are not designed to assist in determining the injection location and depth. Surgeries are usually performed based on the doctor's experience. This may result in the injection being too deep or too shallow due to the lack of experience of some doctors, leading to failure to achieve the therapeutic effect. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an injection aid.

[0006] The present invention provides an injection aid, comprising:

[0007] The shell has a first space inside; the shell is connected to a gas extraction device; the gas extraction device is used to extract the gas in the first space;

[0008] The shell is provided with a through hole, which connects the outside with the first space; the through hole is used to absorb the injection site by negative pressure when the gas extraction device extracts the gas in the first space;

[0009] The shell is also provided with a needle hole that passes through the side wall of the shell. The needle hole connects the outside with the through hole and remains airtight with the first space. It is used for the needle to extend into the through hole to inject the part to be injected in the through hole.

[0010] According to the technical solution provided by the present invention, the width of the pinhole gradually increases from the port close to the outside to the port close to the through hole.

[0011] According to the technical solution provided by the present invention, the housing includes:

[0012] an auxiliary tube, wherein the auxiliary tube has the first space therein and is provided with the through hole and the pinhole; and the auxiliary tube is further provided with an opening;

[0013] A sealing cover is detachably mounted on the opening; an air extraction hole is provided on the sealing cover; the air extraction hole is connected to the air extraction device and the first space.

[0014] According to the technical solution provided by the present invention, the auxiliary tube has a raised portion; an air hole connected to the first space is opened inside the raised portion, so that the first space is connected to the outside only through the through hole when blocked.

[0015] According to the technical solution provided by the present invention, the end of the auxiliary tube away from the opening has a conical shape or a hemispherical shape.

[0016] According to the technical solution provided by the present invention, the auxiliary tube also has a scale;

[0017] The scale is arranged on the inner wall of the auxiliary tube and is directly opposite to the needle hole; or is arranged on the outer wall of the auxiliary tube away from the needle hole.

[0018] According to the technical solution provided by the present invention, the auxiliary tube is made of transparent material.

[0019] According to the technical solution provided by the present invention, a guide portion is fixed on the auxiliary tube directly opposite the needle hole.

[0020] The beneficial effects of the present invention are:

[0021] An injection aid is designed, comprising a shell. The shell is provided with a through hole for adsorbing the part to be injected, and a needle hole for injection, and the needle hole and the through hole are connected to each other. A vacuum device is connected to the first space inside the shell, and is used to extract the gas in the first space. When the vacuum device extracts the gas in the first space, the needle is inserted into the through hole to inject the part to be injected in the through hole. In this way, the needle is injected through the needle hole, and the injection position is relatively fixed; since the injection position is relatively fixed, it is also convenient to control the injection depth; it can significantly improve the success rate of the operation and ensure the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 This is a schematic structural diagram of an injection aid;

[0024] Figure 2 is a front cross-sectional view of the injection aid;

[0025] Figure 3 is a side sectional view of an injection aid;

[0026] Figure 4 This is a schematic diagram of the structure in which the scale is located on the inner wall of the auxiliary tube;

[0027] Figure 5 Schematic diagram of the structure in which the scale is located on the outer wall of the auxiliary tube;

[0028] Figure 6 Schematic diagram of the structure of the guide part;

[0029] Among them: 1. Shell; 2. Through hole; 3. Pinhole; 4. Auxiliary tube; 5. Sealing cover; 6. Opening; 7. Air extraction hole; 8. Raised part; 9. Air hole; 10. Scale; 11. Guide part. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] Please refer to Figure 1-3 The present invention provides an injection aid, comprising:

[0033] Shell 1; the shell 1 has a first space inside; the shell 1 is connected to a gas extraction device; the gas extraction device is used to extract the gas in the first space;

[0034] The housing 1 is provided with a through hole 2, which connects the outside with the first space; the through hole 2 is used to absorb the injection site by negative pressure when the gas extraction device extracts the gas in the first space;

[0035] The shell 1 is also provided with a needle hole 3 that passes through the side wall of the shell 1. The needle hole 3 connects the outside with the through hole 2 and remains airtight with the first space. It is used for the needle to extend into the through hole 2 to inject the area to be injected in the through hole 2.

[0036] Specifically, a vacuum device is used to suck the injection site into the through hole 2, and then the injection is performed through the needle hole 3. The injection position is relatively fixed. At the same time, since the injection position is relatively fixed, it is also convenient to control the injection depth. This can significantly improve the success rate of the operation and ensure the treatment effect.

[0037] Furthermore, the width of the pinhole 3 gradually increases from the end close to the outside to the end close to the through hole 2 .

[0038] Specifically, the width of the needle hole 3 gradually increases as it approaches the injection site, so that the injection direction of the needle can be adjusted within the needle hole 3 according to actual conditions, thereby improving the accuracy of the injection position and facilitating the control of the injection depth.

[0039] Furthermore, the housing 1 includes:

[0040] An auxiliary tube 4, wherein the auxiliary tube 4 has the first space therein and is provided with the through hole 2 and the pinhole 3; the auxiliary tube 4 is further provided with an opening 6;

[0041] A sealing cover 5 is detachably mounted on the opening 6 ; an air extraction hole 7 is formed on the sealing cover 5 ; the air extraction hole 7 connects the air extraction device and the first space.

[0042] Specifically, the housing 1 is designed to be detachable, so that the auxiliary tube 4 can be replaced before performing different surgeries to avoid cross infection between different patients. The sealing cover 5 can be always connected to the suction device, making it more convenient to use.

[0043] Furthermore, the auxiliary tube 4 has a raised portion 8 ; an air hole 9 communicating with the first space is opened inside the raised portion 8 , so that the first space is communicated with the outside only through the through hole 2 when blocked.

[0044] Specifically, two protrusions 8 and two air holes 9 are provided to avoid blocking the air hole 9 due to operational errors, which may lead to danger.

[0045] When the exhaust device extracts the gas in the first space and the housing 1 is not in contact with the injection site, if the air hole 9 is not blocked, the gas will enter the first space through the air hole 9, the through hole 2 and the needle hole 3.

[0046] When the air hole 9 is blocked and the housing 1 is in contact with the injection site, the first space is connected to the outside world only through the needle hole 3. Because the gas flow through the needle hole 3 is very low, a negative pressure is still generated within the first space, which continuously attracts the injection site and forces the patient into the through hole 2. Once the injection site enters the through hole 2, it abuts against the end of the needle hole 3, preventing gas from entering the first space through the needle hole 3 and through hole 2, ultimately achieving the desired absorption effect.

[0047] Furthermore, the end of the auxiliary tube 4 away from the opening 6 has a conical shape or a hemispherical shape.

[0048] Specifically, the conical or hemispherical end portion can allow the auxiliary tube 4 to be inserted into the affected area (anal canal) more smoothly, thereby reducing the patient's discomfort during the operation.

[0049] Further, refer to Figure 6 The auxiliary tube 4 is made of transparent material; a guide portion 11 is fixed opposite to the needle hole 3.

[0050] Further, refer to Figure 4-5 The auxiliary tube 4 also has a scale 10; the scale 10 is located on the inner wall of the auxiliary tube 4 and directly opposite the needle hole 3; or is located on the outer wall of the auxiliary tube 4 away from the needle hole 3.

[0051] Specifically, the use of transparent materials facilitates observation of the specific surgical situation and the injection depth of the needle.

[0052] In some embodiments, reference Figure 4 The scale is set on the inner wall of the auxiliary tube 4 and is opposite to the needle hole 3, so that the actual injection depth of the needle can be read more accurately, making it easier for the doctor to continue the operation.

[0053] In some embodiments, reference Figure 5 The scale is set on the outer wall of the auxiliary tube 4 away from the needle hole 3. In actual surgery, the side close to the through hole 2 is generally in contact with the tissue around the injection site, which is inconvenient to observe. Therefore, the scale can be observed more clearly on the side away from the through hole 2.

[0054] Specifically, during the operation, the guide portion 11 abuts against the needle, making it easier for the needle to smoothly extend into the needle hole 3 .

[0055] The steps include:

[0056] Step 1: Connect the auxiliary tube 4 to the sealing cover 5, and connect the sealing cover 5 to the exhaust device to continuously exhaust;

[0057] Step 2: Insert the auxiliary tube 4 into the affected area (anal canal);

[0058] Step 3: Adjust the direction and position of the auxiliary tube 4 so that the injection site faces the through hole 2;

[0059] Step 4: After the doctor puts on surgical gloves, he uses the thumb and index finger of one hand (other blocking methods can also be used) to block the two air holes 9 respectively, and waits for the injection site to be sucked into the through hole 2 by the negative pressure;

[0060] Step 5: The needle enters the needle hole 3 through the guide portion 11, thereby completing the injection;

[0061] Step 6: Pull out the needle, loosen the air hole 9, and take out the auxiliary tube 4.

[0062] Generally speaking, the above scheme is applicable to the surgical treatment process of internal hemorrhoids and plays an auxiliary injection role; when other injection sites are needed, this injection aid can be used to complete the operation.

[0063] The above description is merely a preferred embodiment of the present invention and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in the present invention.

Claims

1. An injection aid, characterized in that: include: A shell (1); a first space is provided inside the shell (1); the shell (1) is connected to a gas extraction device; the gas extraction device is used to extract gas from the first space; The shell (1) is provided with a through hole (2), the through hole (2) communicating with the outside world and the first space; the through hole (2) is used to absorb the part to be injected by negative pressure when the gas extraction device extracts the gas in the first space; The shell (1) is also provided with a needle hole (3) penetrating the side wall of the shell (1). The needle hole (3) connects the outside with the through hole (2) and maintains airtightness with the first space, and is used for allowing a needle to extend into the through hole (2) to inject the part to be injected in the through hole (2).

2. An injection aid according to claim 1, characterized in that: The width of the pinhole (3) gradually increases from the end close to the outside to the end close to the through hole (2).

3. The injection aid according to claim 1, characterized in that: The housing (1) comprises: An auxiliary tube (4), wherein the interior of the auxiliary tube (4) has the first space and is provided with the through hole (2) and the pinhole (3); the auxiliary tube (4) is also provided with an opening (6); A sealing cover (5) is detachably mounted on the opening (6); an air extraction hole (7) is provided on the sealing cover (5); and the air extraction hole (7) communicates with the air extraction device and the first space.

4. An injection aid according to claim 3, characterized in that: The auxiliary tube (4) has a raised portion (8); an air hole (9) communicating with the first space is provided inside the raised portion (8), so that the first space can communicate with the outside world only through the through hole (2) when blocked.

5. The injection aid according to claim 3, characterized in that: The end of the auxiliary tube (4) away from the opening (6) has a conical shape or a hemispherical shape.

6. The injection aid according to claim 3, characterized in that: The auxiliary tube (4) is made of transparent material.

7. The injection aid according to claim 6, characterized in that: The auxiliary tube (4) also has a scale (10); The scale (10) is arranged on the inner wall of the auxiliary tube (4) and directly opposite the needle hole (3); or is arranged on the outer wall of the auxiliary tube (4) away from the needle hole (3).

8. The injection aid according to claim 3, characterized in that: A guide portion (11) is fixed on the auxiliary tube (4) at a position facing the needle hole (3).

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