CN107213537A - It is a kind of that servicing unit is precisely subcutaneously injected - Google Patents

Abstract

The invention relates to a precision subcutaneous injection auxiliary device, which belongs to the technical field of medical devices, and is composed of a cylinder body, an exhaust device, an injection window and a sealing sticker. The bottom of the cylinder body is open and the top is connected to the exhaust device. An injection window is provided, and the injection window is covered with a sealing sticker. Its advantages are as follows: the present invention achieves maximum separation of subcutaneous tissue and muscle layer through negative pressure suction, and can realize precise subcutaneous injection in the back and other parts. The negative pressure can be generated portablely, the skin can be easily lifted, and the negative pressure can be easily eliminated to quickly separate the auxiliary device from the skin. There is an injection window, and the injection window is provided with a replaceable sealing sticker, which can seal the injection window and realize the function of hemostasis after injection.

Description

A precise hypodermic injection auxiliary device

technical field

The invention relates to the technical field of medical devices, in particular to an auxiliary device for precise subcutaneous injection.

Background technique

Subcutaneous injection is the injection of a liquid medicine into the subcutaneous tissue. Commonly used injection sites are the upper arm and lateral thigh. With the introduction of new technologies and the emergence of new needs in clinical practice, the use of subcutaneous injection of ultrasound contrast agent for sentinel lymph node examination is conducive to the assessment of malignant tumor staging, to guide the degree of local lymph node dissection, and to improve the quality of patients after surgery. quality of life. The primary condition for contrast-enhanced ultrasonography of sentinel lymph nodes is to accurately inject the contrast agent into the local subcutaneous tissue, so that the contrast agent can accurately flow back to the lymph nodes through the lymphatic vessels, so as to achieve contrast-enhanced imaging of the sentinel lymph nodes. Therefore, the subcutaneous injection site is not limited to the conventional injection site on the upper arm and the lateral thigh, but has been extended to any other site on the body surface, such as around the breast and the neck. In view of the different sensitivity to touch pain in different parts of the skin, the tightness of the skin, and the thickness of the subcutaneous tissue, it is difficult to meet the clinical needs of conventional subcutaneous injection techniques. Therefore, there is an urgent need for a subcutaneous injection auxiliary device, which can realize accurate, fast and convenient subcutaneous injection under different skin conditions.

Chinese patent document CN101869734A discloses a negative pressure adsorption hypodermic injection device, which is composed of an adsorption device, an air compression device, a quick deflation device and an injection syringe. The absorber and the air compressor are connected by a trachea, and the air in the absorber can be quickly extracted through the air compressor, so that a negative pressure is formed in the absorber and the skin shrinks and bulges, and the bulging height of the skin can be adjusted through the air compressor. The injection syringe is sealed and connected with the absorber through the needle step. When the skin shrinks and bulges, the needle is automatically inserted into the skin, and then the drug injection can be performed. The quick deflation device is composed of a rubber plug. When the rubber plug is pulled out, the air pressure in the absorber returns to atmospheric pressure, the skin relaxes and becomes flat, and the needle is automatically pulled out from the skin. There are some obvious problems in this patent. First, in this patent, the needle enters the skin and exits the skin through vacuum negative pressure, and the control accuracy of the needle insertion depth is not high; second, it must be sucked back before subcutaneous injection to remove the needle tip. In the subcutaneous blood vessel, ensure that the injected drug is in the subcutaneous tissue space, rather than entering the circulatory system through the blood vessel, causing medical accidents; third, the subcutaneous and skin puncture points are in a negative pressure environment when the drug is injected. When the drug enters the subcutaneous tissue through the positive pressure needle tube, it will be sucked back to the skin surface along the gap around the needle; at the same time, the drug can also permeate out of the skin through the needle hole during the process of withdrawing the needle. Therefore, it is difficult to achieve the subcutaneous injection effect. At the same time, the dosage of drugs for subcutaneous injection is generally very small, and the requirements for dosage control are high. It is difficult for the injection method in this patent to precisely control the dosage of drugs. Chinese patent document CN205698759U discloses a skin retainer for hypodermic injection, which includes an elastic straw hat-shaped retainer body; the retainer body includes a crown and a brim around the bottom of the crown; A suction cup; the inside of the crown is hollow; the top of the crown is pressed down and can be bounced back to reset; a drawstring is set at the bottom of the periphery of the crown; the drawstring is equipped with an elastic buckle. The working principle of this patent is also through negative pressure, and it is also in a negative pressure state during injection, and its disadvantages are the same as those of the patent CN101869734A. However, the precise subcutaneous injection auxiliary device of the present invention uses negative pressure to separate the subcutaneous tissue and the muscular layer; the subcutaneous tissue is under normal pressure during injection, which realizes precise control of the drug injection volume; after injection, the injection site is automatically closed to achieve hemostasis and prevent bleeding. Infection and other related functions, products with related functions have not been reported yet.

The invention has been funded by the following projects: three-year action plan for promoting clinical skills and clinical innovation ability of municipal hospitals (16CR3105B); technology transfer promotion project of Science and Technology Department of Shanghai Jiao Tong University School of Medicine (ZT201710, ZT201711); Shanghai Science and Technology Committee Medical Guidance Science and Technology Project (15411969100, 16411969300); Shanghai Jiaotong University Medical-Industrial Interdisciplinary Research Fund (YG2015MS28); Shanghai Municipal Health and Family Planning Commission Fund (201440290, 201640043).

Contents of the invention

The object of the present invention is to provide a precise hypodermic injection auxiliary device to address the deficiencies in the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is: a precise subcutaneous injection auxiliary device, the precise subcutaneous injection auxiliary device is composed of a cylinder body, an exhaust device, an injection window and a sealing sticker, and the bottom of the cylinder body is open The cylinder is connected to the exhaust device; the cylinder wall of the cylinder is provided with an injection window, and the injection window is covered with a sealing sticker; the sealing sticker is composed of adhesive tape and a water-absorbing pad.

A preferred technical solution is: the exhaust device is composed of a movable push rod, a plug pipe, an exhaust nozzle and a rubber plug; the top of the cylinder has an exhaust through hole, and the exhaust through hole is connected with the exhaust The lower part of the nozzle is connected, and there is a movable push rod inside the exhaust nozzle; the upper part of the movable push rod is spherical, the middle part is a straight rod, the lower end of the straight rod is a convex ring, and the lower end of the convex ring is an inverted conical pendant; the upper end of the exhaust nozzle is There is a plug tube, and the plug tube is set on the middle straight rod of the movable push rod; the inverted conical pendant of the movable push rod is covered with a rubber plug, which matches the convex ring and the inverted conical pendant of the movable push rod .

Another preferred technical solution is: the cylinder wall of the cylinder is provided with an air intake valve, the height of the air intake valve is higher than the injection window; the exhaust device is composed of a piston, a connecting rod and a handle Composition, the piston is installed inside the barrel; the piston is connected to the connecting rod, the barrel has an exhaust through hole, the connecting rod is inserted into the exhaust through hole, and the other end of the connecting rod is connected to the handle.

Preferably, the connecting rod is provided with threads, and the connecting rod is provided with a nut at the outer part of the cylinder.

Preferably, the connecting rod is provided with a positioning through hole, and the positioning rod can be inserted into the positioning through hole.

Preferably, the inner wall of the barrel is provided with a circle of limiting protrusions or a layer of air-permeable plate, and the height of the limiting protrusions and the air-permeable plate is higher than the injection window.

Preferably, the barrel is cylindrical or square.

Preferably, the closure sticker is connected to the outer wall or the inner wall of the barrel.

Preferably, the water-absorbing pad is located in the middle of the adhesive plaster, and the adhesive plaster has glue on it.

Preferably, the glue is on one or both sides of the adhesive plaster.

The present invention has the advantage that:

1. The present invention achieves the maximum separation of subcutaneous tissue and muscle layer through negative pressure suction, and can realize precise subcutaneous injection in any part of the whole body such as the chest and back.

2. After the device of the present invention assists the injection needle to enter the subcutaneous tissue, confirm that the needle tip is in the subcutaneous tissue space other than the blood vessel by sucking back, it can decompress and separate from the skin, and subsequent drug injections are all carried out in the natural state of the subcutaneous tissue , to achieve precise drug injection.

3. The auxiliary device of the present invention can generate negative pressure portablely, lift the skin conveniently, and eliminate the negative pressure conveniently so that the auxiliary device can be separated from the skin quickly.

4. The auxiliary device of the present invention is provided with an injection window, and the injection window is provided with a replaceable sealing sticker, which can seal the injection window and play a sealing role. After the auxiliary device is separated from the skin, the sealing patch continues to be pasted on the injection site to stop bleeding after injection and prevent infection.

Description of drawings

Accompanying drawing 1 is a schematic diagram of the principle of a precision hypodermic injection auxiliary device.

Accompanying drawing 2 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

Accompanying drawing 3 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

Accompanying drawing 4 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

Accompanying drawing 5 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

Accompanying drawing 6 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

Accompanying drawing 7 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

Accompanying drawing 8 is a structural schematic diagram of a sealing sticker.

Accompanying drawing 9 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

Accompanying drawing 10 is a structural schematic diagram of an auxiliary device for precise hypodermic injection.

Accompanying drawing 11 is a structural schematic diagram of an auxiliary device for precise hypodermic injection.

Accompanying drawing 12 is a structural schematic diagram of a precision hypodermic injection auxiliary device.

detailed description

The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

The reference signs and components involved in the accompanying drawings are as follows:

1. Cylinder

11. Intake valve

12. Limit protrusion

13. Breathable board

2. Exhaust device

211. Movable push rod

212. Plug pipe

213. Exhaust nozzle

214: rubber plugging

221. Piston

222. Connecting rod

223. handle

224: Nut

231. Piston

232. Connecting rod

233. handle

234. Positioning through hole

235. Positioning rod

3. Injection window

4. Close sticker

41. Tape

42. Absorbent pad

Please refer to the accompanying drawings 1-12, a precision hypodermic injection auxiliary device, which consists of a cylinder (1), an exhaust device (2), an injection window (3) and a sealing sticker (4). The bottom of the cylinder (1) is open, the cylinder (1) is connected to the exhaust device (2), the cylinder wall of the cylinder (1) is provided with an injection window (3), the The injection window (3) is covered with a sealing sticker (4).

Embodiment 1 Accurate hypodermic injection auxiliary device

Please refer to accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 8, accompanying drawing 2 is the three-dimensional schematic diagram of the precise hypodermic injection auxiliary device of this embodiment (not covered with sealing tape), and accompanying drawing 3 is the precise subcutaneous injection auxiliary device of this embodiment. The three-dimensional schematic diagram of the hypodermic injection auxiliary device (covering the sealing patch), the accompanying drawing 4 is a cross-sectional view of the precise hypodermic injection auxiliary device of this embodiment, and the accompanying drawing 8 is a schematic diagram of the sealing patch of this embodiment.

The precise hypodermic injection auxiliary device is composed of a cylinder body (1), an exhaust device (2), an injection window (3) and a sealing patch (4). The cylinder (1) is in the shape of a cylinder with a hemispherical top, and the bottom of the cylinder (1) is open. The top of the cylinder (1) is connected to the exhaust device (2), and the exhaust device (2) consists of a movable push rod (211), a plug pipe (212), an exhaust nozzle (213) and glue Blocking (214) composition. The top of the cylinder body (1) has an exhaust through hole, and the exhaust through hole is connected with the bottom of the exhaust nozzle (213), and the exhaust nozzle (213) is provided with a movable push rod (211); the movable push rod ( The upper part of 211) is spherical, the middle part is a straight rod, the lower end of the straight rod is a convex ring, and the lower end of the convex ring is an inverted conical pendant; the upper end in the exhaust nozzle (213) is provided with a plug pipe (212), and the plug pipe ( 212) is sleeved on the middle part of the movable push rod (211); the inverted conical pendant of the movable push rod (211) is covered with a rubber plug (214), and the rubber plug (214) and the movable push rod (211) Raised ring, inverted conical pendant to match. The cylinder wall of the cylinder (1) is provided with an injection window (3), the injection window (3) is covered with a sealing sticker (4), and the sealing sticker (4) is connected to the outer wall of the cylinder (1). Closing paste (4) is made up of adhesive plaster (41) and water-absorbing pad (42), and water-absorbing pad (42) is positioned at the middle part of adhesive plaster (41), and adhesive plaster (41) is provided with the side of water-absorbing pad (42) to have glue.

Embodiment 2 Accurate hypodermic injection auxiliary device

Please refer to accompanying drawing 5, accompanying drawing 6, accompanying drawing 7, accompanying drawing 8, accompanying drawing 5 is the three-dimensional schematic diagram of the precision hypodermic injection auxiliary device of this embodiment (not covered with sealing tape), and accompanying drawing 6 is the precise subcutaneous injection auxiliary device of this embodiment The three-dimensional schematic diagram of the hypodermic injection auxiliary device (covering the sealing patch), the accompanying drawing 7 is a cross-sectional view of the precise hypodermic injection auxiliary device of this embodiment, and the accompanying drawing 8 is a schematic diagram of the sealing patch of this embodiment.

The precise hypodermic injection auxiliary device is composed of a cylinder body (1), an exhaust device (2), an injection window (3) and a sealing patch (4). The cylinder body (1) is square as a whole, and the bottom of the cylinder body (1) is open. The top of the cylinder (1) is connected to the exhaust device (2), and the exhaust device (2) consists of a movable push rod (211), a plug pipe (212), an exhaust nozzle (213) and glue Blocking (214) composition. The top of the cylinder body (1) has an exhaust through hole, and the exhaust through hole is connected with the bottom of the exhaust nozzle (213), and the exhaust nozzle (213) is provided with a movable push rod (211); the movable push rod ( The upper part of 211) is spherical, the middle part is a straight rod, the lower end of the straight rod is a convex ring, and the lower end of the convex ring is an inverted conical pendant; the upper end in the exhaust nozzle (213) is provided with a plug pipe (212), and the plug pipe ( 212) is sleeved on the middle part of the movable push rod (211); the inverted conical pendant of the movable push rod (211) is covered with a rubber plug (214), and the rubber plug (214) and the movable push rod (211) Raised ring, inverted conical pendant to match. The cylinder wall of the cylinder (1) is provided with an injection window (3), the injection window (3) is covered with a sealing sticker (4), and the sealing sticker (4) is connected to the inner wall of the cylinder (1). Closing paste (4) is made up of adhesive plaster (41) and water-absorbing pad (42), and the both sides of adhesive plaster (41) are all provided with glue, and water-absorbing pad (42) is positioned at the middle part of adhesive plaster (41).

Embodiment 3 vacuum gun

The precise hypodermic injection auxiliary device of the present invention needs to be used in conjunction with a vacuum gun and other air extraction devices, and the vacuum gun matched with the cupping device can be used. Vacuum guns can be purchased on the market, and Chinese patent ZL00103555.X also discloses a vacuum gun.

A vacuum gun is composed of a nozzle, a connecting handle, a rubber hose, a connecting sleeve, a front plug, a leather cup, a rear plug, a pressure spring, a pull rod, a handle, and a gun barrel. The front end of the pull rod is threadedly connected to the front plug and the sleeve with a rear plug, and a leather cup is clamped between the front plug and the rear plug, and the leather cup acts as a piston ring. The inner cavity of the gun barrel plays the role of a cylinder body, and the leather cup of the handle is packed into the inner cavity of the gun barrel. The rear end of the gun barrel is threadedly connected with the front end of the handle, and a stage clip is arranged between the back plug and the front end of the handle. There is a tapered handle at the front end of the gun barrel, and there are tapered holes at the left and right ends of the gun mouth cavity, one end is a large tapered hole, the two outer sides of the tapered hole are large-caliber ends, and the two inner sides of the tapered hole are small-caliber ends. The tapered handle at the front end of the gun barrel is inserted into the large tapered hole of the gun nozzle. The communication pipeline between the two includes a rubber hose, a connecting handle connected to the front end of the rubber hose, and a connecting sleeve connected to the rear end of the rubber hose.

Embodiment 4 principle and method of use

Please refer to Figure 1, when injecting, the skin can be pulled up by using the correct method, so as to separate the subcutaneous tissue from the muscle layer, thereby achieving more accurate subcutaneous injection. But, for positions such as chest and back, it is difficult to directly pull up the skin to separate the subcutaneous tissue from the muscle layer. Therefore, the inventor has designed a negative pressure device to separate the subcutaneous tissue from the muscle layer.

The auxiliary device of the present invention is placed at the site where subcutaneous injection is required, a vacuum is formed by a vacuum gun, the skin is lifted, and the syringe is injected through the injection window (3). After injection, stick the occlusive patch (4) on the patient's skin. The present invention can become a special medical device product, and its application prospect is broad.

Embodiment 5 Accurate hypodermic injection auxiliary device

Please refer to accompanying drawing 8, accompanying drawing 9, accompanying drawing 10, accompanying drawing 8 is the schematic diagram of the sealing patch of this embodiment, accompanying drawing 9 is the sectional view of the precise subcutaneous injection auxiliary device of this embodiment, accompanying drawing 10 is this embodiment A three-dimensional schematic diagram of the precise hypodermic injection aid.

The precise hypodermic injection auxiliary device is composed of a cylinder body (1), an exhaust device (2), an injection window (3) and a sealing patch (4). The cylinder (1) is in the shape of a cylinder with a hemispherical top, and the bottom of the cylinder (1) is open. The cylinder (1) is connected with an exhaust device (2), and the exhaust device (2) is composed of a piston (221), a connecting rod (222), a handle (223) and a nut (224). The piston (221) is installed inside the cylinder (1); the piston (221) is connected with the connecting rod (222), and the connecting rod (222) has threads, and the top of the cylinder (1) has an exhaust vent. hole, the connecting rod (222) is inserted in the exhaust through hole; the other end of the connecting rod (222) is connected with the handle (223); the part of the connecting rod (222) positioned at the outside of the cylindrical body (1) is provided with a nut (224). The cylinder wall of the cylinder (1) is provided with an injection window (3), the injection window (3) is covered with a sealing sticker (4), and the sealing sticker (4) is connected to the outer wall of the cylinder (1). Closing paste (4) is made up of adhesive plaster (41) and water-absorbing pad (42), and water-absorbing pad (42) is positioned at the middle part of adhesive plaster (41), and adhesive plaster (41) is provided with the side of water-absorbing pad (42) to have glue. The cylinder wall of the cylinder (1) is provided with an air intake valve (11), and the inner wall of the cylinder (1) is provided with a circle of limit projections (12), the air intake valve (11), The height of the limit protrusion (12) is higher than the injection window (3).

Place the auxiliary device of the present invention at the site where subcutaneous injection is required, pull up the handle (223) to form a vacuum in the cylinder (1), lift the skin, adjust the position of the nut (224), so that the piston (221) is fixed at a suitable position. high. The syringe is injected through the injection window (3), and after the injection, the closure patch (4) is pasted on the patient's skin.

Embodiment 6 Accurate hypodermic injection auxiliary device

Please refer to accompanying drawing 8, accompanying drawing 11, accompanying drawing 12, accompanying drawing 8 is the schematic diagram of the sealing patch of this embodiment, accompanying drawing 11 is the cross-sectional view of the accurate subcutaneous injection auxiliary device of this embodiment, accompanying drawing 12 is this embodiment A three-dimensional schematic diagram of the precise hypodermic injection aid.

The precise hypodermic injection auxiliary device is composed of a cylinder body (1), an exhaust device (2), an injection window (3) and a sealing patch (4). The cylinder (1) is in the shape of a cylinder with a hemispherical top, and the bottom of the cylinder (1) is open. The cylinder (1) is connected to the exhaust device (2), and the exhaust device (2) consists of a piston (231), a connecting rod (232), a handle (233), a positioning through hole (234) and a positioning Rod (235) forms. The piston (231) is installed inside the cylinder (1), the piston (231) is connected to the connecting rod (232), the top of the cylinder (1) has an exhaust through hole, and the connecting rod (232) is inserted into the row In the gas passage hole, the other end of the connecting rod (232) is connected with the handle (233), and the handle (233) is located on the outside of the cylinder (1); the connecting rod (232) is provided with a row of positioning through holes (234), and the positioning The rod (235) is inserted into the positioning through hole (234). The cylinder wall of the cylinder (1) is provided with an injection window (3), the injection window (3) is covered with a sealing sticker (4), and the sealing sticker (4) is connected to the outer wall of the cylinder (1). Closing paste (4) is made up of adhesive plaster (41) and water-absorbing pad (42), and water-absorbing pad (42) is positioned at the middle part of adhesive plaster (41), and adhesive plaster (41) is provided with the side of water-absorbing pad (42) to have glue. The cylinder wall of the cylinder (1) is provided with an inlet valve (11), and the inner wall of the cylinder (1) is provided with a layer of air-permeable plate (13), the air-intake valve (11), the air-permeable plate The height of (13) is higher than the injection window (3).

Place the auxiliary device of the present invention at the site where subcutaneous injection is required, pull up the handle (233) to form a vacuum in the cylinder (1), lift the skin, insert the positioning rod (235) into the positioning through hole (234), and make the piston (231) is fixed at a suitable height. The syringe is injected through the injection window (3), and after the injection, the closure patch (4) is pasted on the patient's skin.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the method of the present invention, some improvements and supplements can also be made, and these improvements and supplements should also be considered Be the protection scope of the present invention.

Claims (10)

1. a kind of be precisely subcutaneously injected servicing unit, it is characterised in that described accurate hypodermic injection servicing unit is by cylinder, row Device of air, injection window and closing patch composition, the bottom of cylinder are open；Described cylinder connection exhaust apparatus；Described cylinder Barrel provided with injection window, injection window on covered with closing patch；Closing patch is made up of adhesive plaster and adsorptive pads.

2. accurate hypodermic injection servicing unit according to claim 1, it is characterised in that described exhaust apparatus is by activity The stifled composition of push rod, plug pipe, exhaust nozzle and glue；Have at the top of described cylinder under exhaust hole, exhaust hole and exhaust nozzle Portion is connected, and movable push bar is provided with exhaust nozzle；The top of movable push bar be spherical, middle part be straight-bar, straight-bar lower end be bulge loop, it is convex Ring lower end is turbination suspension member；Upper end in exhaust nozzle is provided with plug pipe, and plug pipe sleeve is located at the middle part straight-bar of movable push bar； Set hangs with glue and blocked up on the turbination suspension member of movable push bar, and glue is stifled to be matched with bulge loop, the turbination suspension member of movable push bar.

3. accurate hypodermic injection servicing unit according to claim 1, it is characterised in that set on the barrel of described cylinder There is intake valve, the height of described intake valve is higher than injection window；Described exhaust apparatus is by piston, connecting rod and handle group Into described piston is arranged on the inside of cylinder；Piston is connected with connecting rod, and described cylinder has exhaust hole, and connecting rod is inserted Enter in exhaust hole, the other end of connecting rod is connected with handle.

4. accurate hypodermic injection servicing unit according to claim 3, it is characterised in that described connecting rod is provided with spiral shell Line, connecting rod is located at cylinder Outboard Sections and is provided with nut.

5. accurate hypodermic injection servicing unit according to claim 3, it is characterised in that described connecting rod is provided with fixed Position through hole.

6. accurate hypodermic injection servicing unit according to claim 3, it is characterised in that described cylinder inboard wall is provided with one Spacing preiection or one layer of air permeable plate are enclosed, spacing preiection, the height of air permeable plate are higher than injection window.

7. accurate hypodermic injection servicing unit according to claim 1, it is characterised in that described cylinder to be cylindric or Person is square.

8. accurate hypodermic injection servicing unit according to claim 1, it is characterised in that described closing patch is connected to cylinder The outer wall or inwall of body.

9. accurate hypodermic injection servicing unit according to claim 1, it is characterised in that described adsorptive pads are located at adhesive plaster Middle part, there is on described adhesive plaster glue.

10. accurate hypodermic injection servicing unit according to claim 9, it is characterised in that glue is located at the side of adhesive plaster Or both sides.